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Re: Welding on bolts[Subject Prev][Subject Next][Thread Prev][Thread Next]
- To: seaint(--nospam--at)seaint.org
- Subject: Re: Welding on bolts
- From: "Steven A." <cratylus(--nospam--at)earthlink.net>
- Date: Tue, 03 Apr 2001 01:39:44 -0700
I had the impression that the connections you refereed to (in the original message) dealt with a steel to steel assembly, as opposed to column base plates. The inquiry spurred much e-mail debate relative to high strength or slip-critical bolting applications. It would appear that the the nature of the connection is entirely different. If you have numerous damaged bolts due to welding (I cannot imagine tack welding nuts could be responsible for the described broken bolts!), I would be curious to know whether the 'tack welding' was associated with correcting slop in the baseplate bolt holes. Further, if two of the of 6 bolts are broken, could it have been purposely sheared off because of a field problem or defective hole pattern in the fabricated baseplate? The fact that all the nuts are "distorted" suggests that problems arose in the field. Also, it sounds as if the "welding process", in combination with broken bolts and distorted nuts, may be related to flame cutting to either remove bolts or enlarge/alter the baseplate hole pattern. I would recommend caution in prescribing a method of repair before taking a closer look at what happened both in fabrication and erection. Steven A. Boh Jaw Woei wrote: > Now, on a base plate connection, 2 of the 6 botls are broken(due to the > welding process) and almost all the nuts are 'distorted'. I am thinking of > using hilti to installed 4 larger bolts to strengthen the base plate > connection. Are there any other more efficient ways to compensate damges > done to the base plate connection? thanks. > > sgdon > > -----Original Message----- > From: Fountain Conner [mailto:fconner(--nospam--at)pcola.gulf.net] > Sent: Friday, March 30, 2001 10:07 PM > To: seaint(--nospam--at)seaint.org > Subject: Re: Welding on bolts > > Along the same line... > > I work in an industry where the standard anchor bolt is A316 stainless > steel. How do you feel about crimping the threads each side of a nut > that's embedded in the concrete for anchorage? > > Fountain E. Conner, P.E. > Gulf Breeze, Fl. 32561 > > P.S. The wheel, huh? Did you, perhaps, develop the triangular wheel? > Y'know it has one less bump per revolution ;-) > > ---------- > > From: Sprague, Harold O. <SpragueHO(--nospam--at)bv.com> > > To: 'seaint(--nospam--at)seaint.org' > > Subject: RE: Welding on bolts > > Date: Friday, March 30, 2001 9:26 AM > > > > Mechanical deformation of threads is very low tech. > > > > > Regards, > > Harold O. Sprague > > > inventor of the wheel, > > > etc. > >
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I understand that's easy to say, "Make it so," from this position. I'm not responsible for coming up with the money and facilities that could (would?) go a long way in keeping Beilein at WVU. There have been lots of good ideas for improvements to West Virginia's athletic program that have gone undone due to lack of funding or support. But in this case, just as it was in the scenario played out with head football coach Rich Rodriguez, there are simply too many reasons to just let the coach slip away.
WVU basketball was becoming a non-entity when Beilein arrived, and he has made it matter again. A lot. And it would be a terrible decision to let him get away without making every effort, commensurate with the one made to keep Rodriguez, to retain him as the head of his program.
Understand that West Virginia made a major shift in philosophy in the way it funded, and committed to, Rodriguez. A number of private donors committed to funding much of the package that kept Rodriguez at West Virginia. WVU has typically been very conservative in committing to new facilities and expenditures without having the money in hand, or the bonding ability to cover it, so making this commitment singalled a change in the way the University was willing to operate.
That doesn't mean, of course, that the school or athletic department has handed over control of sports, or the selection of coaches, to those who committed to funding that package. However, in taking that money and those commitments, there is always the concern that any donor could pull his or her support if something happens that displeases. But WVU has opened that door, and once opened, it's not going to be easily shut.
Again, I'm not suggesting that will be the case, or that West Virginia made the wrong decision in doing so. But it's a precedent that has been established, and now that it has, it should be fully exploited to keep Beilein on board.
The suspicion is that a similar move is already afoot to put together a package for Beilein. It will have to be done quickly, as Michigan is reportedly meeting, either directly or indirectly, with three candidates in Atlanta this weekend. Michigan will likely identify its top candidate, again reported to be Beilein, by Sunday or Monday at the latest, and make its offer, so West Virginia is again under the gun to make its countermove quickly.
The bigger question is, are there enough heavy hitters who support basketball to get something done in this area? Football remains king in the state, and there is a bigger clamor to be a part of that than there is basketball at this point. Would some of the same people be willing or able to pony up again to keep another coach? Or commit to fundraising for a basketball practice facility, which could be the item that would put West Virginia's offer over the top?
In whatever manner West Virginia's final offer to Beilein is funded or structured, it has to be one that makes it impossible, or nearly so, for him to leave. WVU is riding a wave of unparalleled athletic success, and one of the biggest reasons for that is the quality of the coaches it has hired and retained. The school as a whole is also in growth mode, with a target of reaching as high as 30,000 students in the next decade. Study after study has shown that a strong athletic program contributes to student population increases, so keeping Beilein, just like keeping Rodriguez, can certainly be termed an investment for the entire school.
Again, it won't be easy. The resources of West Virginia University, and its benefactors, aren't unlimited. Those who have to pay the bills and keep finances under control are under immense pressure to keep the budget balanced while maintaining and improving the infrastructre. At every turn, they are faced with someone saying, "This project has to be done." In this case, however, it really does.
Make it so.
The opinions above are solely those of the author, and do not reflect the views of the Blue & Gold News or BlueGoldNews.com.

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How ironic is it that they call Alex Collins 'Budda'? That was a nickname given to him by his older brother many years ago.
"When I was real young, when I was a baby, I was fat and pudgy," Collins said. "The name stuck. Even today I am known as Budda, whether I am playing football or not."
Collins is no longer fat and pudgy. He's actually quite the opposite, as this South Plantation star is now 5-foot-11 and a pretty chiseled 208-pounds. More importantly, he has developed his body and skills and turned himself into the state's top running back prospect and a five-star recruit according to FoxSportsNext and Scout.com.
That alone speaks volumes because Florida is loaded at the top this season with running back prospects like Derrick Henry (Yulee, Fla.) who has committed to Alabama, Kelvin Taylor (Belle Glade Glades Day) who's headed to Florida, Ryan Green (St. Petersburg Catholic) who has pledged to Florida State and a now uncommitted Greg Bryant (Delray Beach American Heritage).
"To be honest, that means a lot," Collins said. "To think last year I was unknown as an 11th grader. I played on the JV as a freshman and didn't play football as a sophomore. I knew I had to work to make a name for myself. I was the new kid that nobody knew. But I used that as motivation. I know who all these guys [running backs] are and then you have all the guys down here in South Florida. I just started working like those guys were working. Whatever they did I did. Now I feel like I am finally coming into my own."
To be honest, Collins hasn't even scratched the surface. You can see a huge difference between his junior to senior season and he's only five games into the 2012 campaign.
"My coach asked me if I wanted to play college football," Collins said. "I told him I would do whatever it takes. He told me I had to get bigger and I thought he was crazy because I thought I would lose my speed. But I listened and I worked."
Collins started his junior season at 180-pounds. He finished up last year at 192 and the Broward County player of the year after rushing for 1,786 yards and 27 touchdowns. Now he's better than ever at 208. And even that weight is just a temporary stop.
"In baseball, they love it when pitchers have three pitches," said Doug Gatewood, South Plantation's coach. "Pitchers have to have a fastball, curveball and changeup or slider. Whatever. With Alex, he's always had speed and quickness. But I told him he needed size.
"Alex got bigger and he's definitely faster. The summer before he's junior year he ran 4.61 [forty]. At Florida State's camp this summer here ran 4.41 and 4.38.
"There's no doubt he's not peaked because he has limited experience and even limited touches. He lifts but not like a college player lifts. I can only imagine what he will be like when his body really develops significantly."
Collins is cruising through five games. South Plantation is 5-0, mainly riding their horse named Budda. Collins has 96 carries for 980 yards and 11 scores. Remember, this isn't small time football in south Florida. He plays against the big boys in 8A with every defense geared to stop him.
"Alex is definitely no longer a hidden commodity," Gatewood concedes.
Collins is no longer unknown but he' certainly wanted. Despite committing to Miami in January he's still listening to other coaches from other programs. He was always up front with the 'Canes staff from the very beginning.
"When he committed to them he told other coaches to still recruit him," Gatewood said. "He had only played the one season and didn't know what was out there. He visited Miami and basically committed on the spot. But he still wanted to be recruited."
Collins says he loves the Hurricanes but he just wants a chance to see what the college football world is like outside of Broward County.
"That Miami visit was my first ever to see a school," Collins said. "It was wonderful and I love Miami. I love those coaches and players. But at the same time I have never really been out of Broward. I also want to know what else is out there."
This weekend Collins will be in for a big change. He's headed to Madison for an official visit to Wisconsin. The following weekend he's headed to Tallahassee to make an official visit to Florida State.
"Those are the two visits I have set up so far," Collins said. "I have been to Miami a bunch but I may make my official visit when they play FSU in a few weeks. I haven't decided yet. I have been talking with Florida a lot lately. I talk with coach [Brian] White. UCF and South Florida are also showing me a lot of interest. It's pretty much those schools.
"Right now I am just taking things day by day."


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Val-Kill, a home and retreat for Eleanor Roosevelt.
Picnicking Plan Eleanor and Franklin Roosevelt loved picnics. One of their favorite places to go was two miles east of their family home Springwood. In the fall of 1924 Eleanor, Franklin, and their good friends Marion Dickerman and Nancy Cook had a picnic on the banks of Fall Kill in this favorite location.
FDR Helps Out The women were sad that this would be their last picnic of the year, it was late in the season and Franklin's mother would soon be closing Springwood for the winter. Franklin thought about the women's problem and suggested that they build a cottage on the property that could be used as a year round retreat. "But aren't you girls silly? This isn't Mother's land. I bought this acreage myself. And why shouldn't you three have a cottage here of your own, so you could come and go as you please?" he said.
Construction Plans Franklin Roosevelt leased the land to the women for building the cottage. The three women shared the $12,000 construction cost. FDR hired an architect named Henry Tombs to design the house, which was to look like a Dutch Colonial cottage with thick stone walls. FDR watched over the construction of what he called "the shack on a stream in the back woods".
Stone Cottage Stone Cottage was completed in 1925. The Roosevelt family had a big dinner party on New Year's Day in 1926 to celebrate the completion of their new home.
Staying at Val-Kill If Franklin came to Hyde Park with Eleanor, she was expected to stay with him at Springwood, the family estate. When Franklin was not visiting Hyde Park, Eleanor stayed at the Val-Kill cottage with her friends Marion and Nan who lived at Val-Kill cottage year round.
Val-Kill's Additions For the entire Roosevelt family, Val-Kill was a place to relax and entertain guests. Over time other additions were made to the property: a pond for boating, a pool, tennis court, stables, outdoor fireplace, and flower gardens. There were meadows and woods surrounding the cottage where they could walk and play.
Eleanor was always interested in helping others and she wanted to help the community of Hyde Park. One afternoon ER told her friends that she and FDR had "often wondered if it would be possible to establish some small industries in the local areas that would provide income for men who could not make a living, or all of their living, from agriculture, and that would also provide interests for rural women." Eleanor and Franklin's Idea
Val-Kill Industries Eleanor, Nancy, and Marion started Val-Kill Industries, to give jobs to young men in the Hyde Park area. It was very difficult to make a good living working on local farms and many boys were leaving the area to find work in the cities. ER wanted to try to make the lives of these young men better by giving them jobs close to home.
Cook suggested that they start a "small factory and copy early American furniture." Cook was a talented woodworker; she designed and built much of the furniture in Stone Cottage. A Furniture Factory
A New Building In 1926, the women built a larger building near Stone Cottage that they called Val-Kill Cottage. The cottage was built to be the furniture factory. Eleanor, Nancy and Marion did a lot of research about furniture making.
Craftsmen They hired master woodworkers to make the furniture. These men were also hired to teach the local men how to make furniture. Nancy Cook inspected all the furniture before it was sold. If the piece was not good enough, she sent it back to the worker. That person had to fix the problem on his own time.
New Products In later years, Val-Kill Industries began to make new products. They made candlesticks, vases, and plates out of pewter. Pewter is a mixture of metals that is dull, silver/gray and fairly easy to shape. After adding pewter objects to production, Val-Kill Industries hired the women of Hyde Park to make weavings. All of these products are very valuable to collectors today.
The End of Val-Kill Industries 1. It took a very long time for people to become master woodworkers, and the local men could not learn to make fine furniture in a short period of time. 2. The Great Depression came and people could not afford to buy the furniture. Val-Kill Industries was in business for nine years, from 1927 to 1936. The company only made a profit for the first two years. The factory closed in 1936 for two reasons:
A New Home for Eleanor In 1936 the factory closed. ER turned the factory into a home for herself. She no longer had to share Stone Cottage with her friends. For the first time, she had a place of her own. Eleanor enjoyed selecting and arranging the furniture and books as she liked and wanted. She decorated her house with photographs of family and friends.
A Place of Her Own ER considered Val-Kill to be her first real home. She had spent much of her childhood in her grandmother's homes and much of her adulthood in homes provided by, and ruled over, by Sara Delano Roosevelt, her mother-in-law. The cottage gave her a place of her own to which she could invite her friends.
Val-Kill served as a peaceful place where ER could write and relax. She wrote many of her books and columns at Val-Kill. ER enjoyed sleeping on her second-floor porch overlooking the pond, she loved "the still nights... with only the stars to look at, just because it gives one a feeling of taking in." Relax and Write
Room for All The house had about twenty rooms of different sizes. It had a place for herself and her secretary, Malvina ("Tommy") Thompson, and guestrooms for the many children, grandchildren, and guests who would visit her there during the years that followed.
A Gracious Hostess Guests remembered ER's warm hospitality: the flowers she cut in her garden and placed in her guests' bedrooms, the fruit she knew you loved and put on your bed stand, and the book she placed in your room which she thought you might enjoy.
Guests at Val-Kill Many different people visited ER at Val-Kill: her students from Todhunter School and Brandeis University, students from the Wiltwyck School (a school for troubled youth), civil rights and labor activists, members of foreign delegations to the United Nations, and dignitaries such as Nikita Krushchev and John F. Kennedy.
After FDR's death on April 12, 1945, ER made Val- Kill her permanent home and when she was not traveling or staying at her apartment in New York City, lived there simply, often surrounded by family, friends, and other guests. ER spent as much time as possible at Val-Kill until September, 1962 when illness forced her to return to New York City. Moving On
Val-Kill After Eleanor Her son John lived at Val-Kill until 1970. At that time John sold the property to two physicians who, in 1973, tried to rezone the property so that they could build health clinics, housing, and a nursing home on the grounds. Several local women opposed the destruction of ER's home and, working with Curtis Roosevelt and New York political leaders, in 1977, they led a successful effort to pass legislation creating The Eleanor Roosevelt National Historic Site.
National Park Service Today, ER's home is operated by the National Park Service and the Stone Cottage houses the Eleanor Roosevelt Center at Val-Kill.
Credits The photographs from this site were collected from the FDR Presidential Library web site and the National Park Service web site. www.nps.gov/elro/ www.fdrlibrary.marist.edu The text was adapted for elementary students from information in the National Park Service web site article "Val- Kill: A Brief History". http://www.nps.gov/elro/what-is-vk/essays/vk-brief- history.htm
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Sound Design for Video Games: More Than Just Music
Game composer and sound designer Aaron Walz has a resume with more than 100 game credits on it, including Ravenwood Fair and the popular Aveyond series. While he's created the signature sound for each of these games, he's the first one to admit that there is way more to sound design than just simply designing sound. Qualities like being a great marketer and entrepreneur are just as important too.
"Your reputation is super important. What games you've worked on is super important. I have been very diligent about putting all my credits on my website so when people ask me what I've worked on I can send them there. … I'm very active on Twitter and I'm very active in making sure I have gameplay videos on YouTube, things like that, just so I have a presence."
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Reputation modifier: 13
Monday, April 10th 2017, 1:31pm
When battlefield first came out it wasn't sold on its shooter pedigree - it had no shooter pedigree. It was sold on expansive environments, freedom of action with many different useful (and many not so useful) roles, big teams, all these cool vehicles and planes and ships and shit, etc.I'm a mediocre player at best and probably the definition of a casual player. Yet, I enjoy BF1 immensely more at the 192 hours I have into it than I have BF4, which I have 1471 hours in. I played BF4 again for a few rounds yesterday and it really feels like the unbalanced mess it is and the vehicle play still sucks ass. People considering BF4 the pinnacle of FPS shooter design might want to reconsider what it is they want from an FPS game. For me, BF1 is better in pretty much every aspect. It has flaws, sure. The UI sucks and its slow. I don't trust some of the mechanics. Oftentimes I'm really not sure if my fog or sandstorm is the same as everyone elses as I can't see shit and I see pilots and scouts farm kills from distance with impunity. Same goes for smoke, really. I don't trust that what I see is what everyone else is seeing (usually nothing). The totally weird points system doesn't make sense to me either. It needs a serious rework to make me able to gauge my own performance properly, let alone explain why the other team won while the match's summary is clearly showing a home team advantage. It simply doesn't reflect anything usefull. But that aside, I think BF1 is great. Too bad it does seem to be dying off, though sofar I haven't had any problems finding games or gamemodes I want to play filled up to the max. Maybe it's just a north american problem, I don't know.
Most whining I see on the youtubes is from people who complain that BF1 isn't made specifically for them or their playstyle. They fail to recognise that maybe they're simply playing the wrong game, and probably alsways have. They complain about vehicles. The open map design. The lack of "good at every situation" weapons. The fact they cannot singlehandedly make a difference to influence a match win or loss. They bitch about behemoths, Elite classes (which I've pretty much never seen make much difference), grenade spam (granted, the gas nades are annoying as hell), basically everything that isn't pointing a gun at a random scrub (that would be me, thanks asshole) and go "pewpew" sucks. What they're basically looking for is CS:GO with BF3 gun mechanics or ARMA3 with hitmarkers. I'm bored by most youtubers discussing Battlefield and I'll probably unsub from most of them. They used to have fun content, now it's only one whine after another saying BF1 isn't made for them. My message to them (including MarbleDuck, who comes off as the elitist prick most SYM team members seem to be): Go away, we don't want you in our game.
Date of registration
: Jan 8th 2016
Platform: PC
Reputation modifier: 3
Monday, April 10th 2017, 6:18pm
Forum Software: Burning Board®, developed by WoltLab® GmbH
© Design by Symthic.com


text:
In order to successfully obtain a Masters qualification, you will need to obtain a number of credits by passing individual modules. Most taught Masters will have a number of core modules which you must take and pass in order to obtain the qualification. The assessment of research Masters is almost always entirely by a single dissertation module or project.
A Master's degree in Social Work is concerned with the improvement of the quality of life of a certain individual or communities. Students will combine research, crisis intervention, community organization and strategy to be able to attain results.
The United States of America is a large country in North America, often referred to as the "USA", the "US", the "United States", "America", or simply "the States". American colleges are funded by "tuition" charged to the student, which is often quite expensive, very commonly reaching into the tens of thousands of dollars per year.
Hayward, California is a city renowned for its booming canning industry in the early 20th century. The city's economy has transitioned to industries in manufacturing and retail. It hosts a state public university, handful of community colleges and more private universities which all offer quality programs in various professions.
Request Information Master's Degrees in Social Work in Hayward in USA 2017
The Department of Social Work is pleased to offer a three-year part-time Master of Social Work (MSW) Program. This program is designed for working human services professionals interested in earning an MSW degree. [+]
Master of Social WorkThe Department of Social Work is pleased to offer a three-year part-time Master of Social Work (MSW) Program. This program is designed for working human services professionals interested in earning an MSW degree. This Council on Social Work (CSWE) accredited program is designed to train social workers for leadership and direct practice positions. The program has a multicultural focus that prepares students to work in both non-profit and public agencies, and to work with diverse populations in urban and suburban communities. Classes are offered year round on Saturdays and hybrid or on-line. Students take 7 courses per year and are placed in a field internship during the second year of the program.... [-]


text:
|Publication number
|Publication type
|Application number
|Publication date
|Jun 28, 1988
|Filing date
|Aug 29, 1986
|Priority date
|Aug 29, 1986
|Fee status
|Publication number
|Forrest A. Shook, Gerard J. DeSantis
|Original Assignee
|Nlb Corporation
|Export Citation
|BiBTeX, EndNote, RefMan
|Patent Citations (22), Referenced by (24), Classifications (10), Legal Events (4)
|External Links: USPTO, USPTO Assignment, Espacenet
The present invention relates to an apparatus in the form of a vehicle having a frame on wheels movable along a road bed for movably mounting within a hood upon the frame a rotating seal and shaft assembly which is connected to a pressure water manifold providing water pressures up to 25,000 p.s.i., as an example. The rotating assembly includes a tubular shaft having depending nozzle(s) for delivering pressurized water for impingement against concrete to be removed from a road bed. The apparatus may operate in an automatic mode or a manual mode.
Heretofore one generally accepted method of breaking up a roadway or concrete was the use of jack hammers employed by a number of men working on a road surface. Often the jackhammer would engage the reinforcing bars and damage them to cause a rapid corrosion of the reinforcing bars. Often the reinforcing bars found embedded within the concrete required sandblasting for cleaning purposes to remove scale and corrosion in order to condition the bars to form a strong bond for a fresh application of concrete. The use of jackhammers created undesired cracks in adjacent concrete and large amounts of airborne dust were created.
As time went on various apparatuses were provided for breaking up concrete of a road bed which employed fluids such as disclosed in U.S. Pat. No. 4,081,200, dated Mar. 18, 1978 entitled "Method and Apparatus to Remove Structural Concrete". In devices of this nature which employed the use of water there was the difficulty of providing water under sufficient pressure and velocity to provide the cutting and breaking up action necessitated in order to commercially remove structural concrete from a road bed at the same time without damaging the related reinforcing bars and without damaging adjacent good concrete.
Another pressure water cleaning device for floors and gratings is disclosed in U.S. Pat. No. 4,219,155 of Aug. 26, 1980, assigned to the assignee of record, where pressurized water in a pattern is applied to a surface for cleaning purposes as it moves over the surface. Other prior art patents for cleaning road ways and for breaking up concrete using pressurized water or other forces are disclosed in the accompanying Information Disclosure Statement.
An important feature of the present invention is to provide a method and apparatus, which may have a manual mode or an automatic mode, for removing structural concrete from a road bed where the action of the water jetting against the concrete in a systematically controlled manner under high pressures results in areas of structural concrete being removed to required depths through one or more levels of aggregate efficiently and with safety to the basic structure and to attendant personnel.
Another important feature of the present method and apparatus includes the use of high pressure rotating jets systematically traveling back and forth over the work area allowing for removal of concrete under controlled conditions. The operation can be performed without danger of cutting into and weakening embedded reinforcing bars and without damaging the concrete in adjoining areas. Only the weakened concrete is removed until you reach good sound concrete that doesn't need replacing, without disturbing the surrounding concrete, and without introducing dust pollution into the air.
Still another important feature is to provide an apparatus for removing structural concrete from a road bed comprising a vehicle having a frame with wheels movable upon and along the road bed in uniform forward increments and including a transversely elongated hood which is pivotally mounted upon one end of the frame, with a rotating seal and shaft assembly movable incrementally along the length of the hood and including a rotatable tubular shaft having depending rotatable nozzle(s). In such an apparatus, the hood has a lowered operative position closely adjacent the road bed and an elevated position and a pressure water manifold is mounted upon the frame and connected to a source of pressurized water. The rotating seal and shaft assembly is effective to deliver pressurized water through the rotating nozzle(s) for impingement against concrete to be removed from a road bed.
A further feature includes a feed carriage guidably mounted upon and within the hood for continuous longitudinal or side way reciprocal movements along the length of the hood, the carriage mounting a rotating seal and shaft assembly including a body having a water inlet connected to the manifold mounted within and upon a carriage and having a power rotated tubular shaft journaled and supported within the body and depending therefrom below the carriage and hood and at one end communicating with the water inlet and with the shaft mounting at least a single nozzle block having a tubular shank upon a vertical axis which is projected into and secured within the shaft and which includes an elongated bore extending to the end of the block at an acute angle to its axis.
Another feature includes a nozzle having a converging orifice communicating with the bore and which is secured within the nozzle block outletting at its end face wherein the sequential penetrating and pulverizing action of water in a rotating pattern impinging against the concrete under high pressure and traveling back and forth over the work area removes structural concrete to a required depth without damage to preexisting reinforcement bars. The pressurized water enters between and beneath the aggregate particles not only removes the concrete immediately surrounding embedded reinforcing bars but it also effectively remove surface scale and corrosion from such bars, conditioning them to form a strong bond with fresh concrete to be poured around them. Incidence angle of the rotational water jets to the concrete surface may be varied as to enhance the removal action in places otherwise difficult to reach such as beneath and behind reinforcing bars or composites of such bars.
As another feature of the present invention, the hood is pivotally mounted upon the frame by laterally spaced brackets and a pair of spaced lift cylinder assemblies upon opposite sides of the frame includes cylinders pivotally mounted upon the frame and reciprocal piston rods pivotally connected to the hood with the controlled advance of the piston rods pivoting the hood to an elevated position and on retraction with the piston rods moving the hood to a lowered use position.
Another feature is to provide with the apparatus for removing structural concrete a source of pressurized water including a water storage and pump vehicle movable upon the road bed and including a supporting bed mounting a water storage tank and a power operated pump connected to the tank together with a pump discharge manifold connected to the tank and having a high pressure water outlet adapted for connection by an elongated flexible hose having fittings to the pressure water manifold on the vehicle apparatus which mounts the rotating seal and shaft assembly and the depending rotatable nozzle(s).
Still another feature includes the guide mounting of the feed carriage for reciprocal movements in increments along the length of the hood with the rotating seal and shaft assembly and the depending rotating nozzle(s) supportably mounted upon the carriage whereby jets of pressurized water are delivered by the nozzle block and the nozzle with orifice or orifices therein for impinging high pressure water over the road bed surface for breaking up concrete and removing structural concrete to a required depth.
A further feature includes a power spiral operator for translating rotary movement of a power operated shaft to longitudinal feed movement of the carriage and wherein a plurality of skewed rollers upon the feed carriage frictionally engage the shaft. A reversal of shaft rotation will reverse direction of the actuator travel and corresponding travel of the carriage mounting the rotating seal and shaft assembly.
A still further feature provides for the shaft for the water seal and shaft assembly a separately operable power drive mounted upon the carriage and directly connected to the shaft for driving the shaft selectively in two directions and at variable speeds under remote control for the hydraulic motor.
Another feature is to provide a rotating nozzle block having an end face and a tubular shank arranged on a vertical axis projected into and secured within the shaft and communicating therewith and which has one or more angularly related bores for delivering pressurized water to corresponding nozzles having converging orifices for outletting at the end face of the nozzle block and for providing a rotating water pressure pattern impinging against concrete under high pressure and adapted for traveling back and forth over a work area while undergoing rotation for removing concrete to a required depth.
Still another feature of the present invention is to provide a novel method of removing structural concrete from a road bed which comprises mounting a vehicle apparatus upon the road bed for longitudinal intermittent incremental forward feed movements thereover, pivotally supporting a hood upon the vehicle apparatus having a lowered use position closely adjacent the road bed and positioning a pressure water manifold upon the vehicle apparatus connected to a source of pressurized water in a high pressure range for delivering pressurized water for impingement against the concrete to be removed from the road bed.
A further feature includes the additional steps of movably mounting a feed carriage upon and within the hood for transverse reciprocal movements along the length thereof and mounting a rotating seal and shaft assembly upon the carriage which includes a power rotated shaft and the further step of supporting at least one nozzle block having an angular bore and an orifice for connection to and rotation with the shaft sequentially penetrating and pulverizing the concrete by impingement of high pressure rotating water jets upon the concrete or road bed surface with the rotating seal assembly reciprocating back and forth over the work area for removing structural concrete to a required depth and removing surface scale and corrosion from the concrete reinforcing bars.
Another feature is to provide a unitary elongated nozzle block having an end face and a tubular shank on a vertical axis and including an elongated bore extending to the end of the block at an acute angle to the axis.
Still another feature is to provide a nozzle assembly comprising the aforedescribed nozzle block and a nozzle having a converging orifice communicating with the bore and secured within the nozzle block and outletting at its end face.
A further feature is to provide a novel rotating high pressure seal and shaft assembly with a rotatable shaft, supported by a pair of roller bearings mounted in the bore of a cylindrical body, with the shaft having a passageway for high pressure fluid, and a cover sealingly engaging an end face of the body and enclosing the inlet to the passageway in the shaft.
These and other features and objects will be seen from the following specification and claims in conjunction with the appended drawings.
FIG. 1 is a front perspective view of the present apparatus for removing structural concrete from a road bed in conjunction with the water storage and pump vehicle movable upon the bed including an elongated flexible hose having fittings for transmitting pressurized water to the water blaster vehicle or apparatus.
FIG. 2 is a plan schematic view of the vehicle apparatus for storing and pumping pressurized water to the water blaster vehicle or apparatus shown in FIG. 1.
FIG. 3 is a side elevational view of the water blaster vehicle upon the road bed with the water blaster assembly in a use position and movable along the "X" axis.
FIG. 4 is a fragmentary view of a modified water blaster vehicle, with the hydraulic motor and cylinder mounted on the frame for incremental movement along the "X" axis and for incremental movement along the "Y" axis.
FIG. 5 is a transverse elevational view of the hood and carriage assembly mounting the water blaster apparatus with respect to the road bed surface with portions fragmentarily shown.
FIG. 6 is a fragmentary longitudinal vertical section of the rotating seal and shaft assembly shown in FIG. 5, on an increased scale.
FIG. 7 is a vertical section of a nozzle block adapted for connection to the tubular shaft of the water blaster assembly.
FIG. 8 is a side elevational view of a modified nozzle block including a pair of acute angularly related water passages and orifices.
FIG. 9 is a plan view of the control support vehicle for the water blaster apparatus shown in FIG. 1.
FIG. 10 is a fragmentary partially sectioned elevational view of the hood and the carriage drive therein for the water blaster apparatus.
FIG. 11 is a schematic circuit diagram illustrating the controls for the hood and for traverse reciprocal movements of the water blaster assembly shown in FIG. 10.
It will be understood that the above drawings illustrate merely a preferred embodiment of the invention, and that other embodiments are contemplated within the scope of the claims hereafter set forth.
Referring to FIG. 1, a high pressure water blaster apparatus or vehicle 11 is movably mounted for longitudinal feed increments upon the concrete or cement road bed or road surface 13. FIG. 1 also illustrates a water blasted area 14 over which the vehicle 11 has already moved for removing structural concrete over an area defined by substantially the width of the cut away area achieved by longitudinal feed increments of a water blaster assembly.
There is also shown in FIG. 1 in connection with the water blasted area 14 a cut away top layer 15 which may have been removed by an apparatus other than the apparatus 11. The steel reinforcements 17 are exposed in the lower portion of the illustration adjacent the water blasted area 14 of FIG. 1.
The water blaster vehicle 11 has a frame 19 mounted upon wheels including a pair of front wheels 21 and a centrally arranged steering wheel 23 which through internal feed mechanism is adapted to effect incremental longitudinal forward feed movements limited amounts as for example 4" to 6" at a time. With such a construction the water blaster vehicle 11 includes high pressure rotating jets which are adapted to travel back and forth transversely over the work area removing structural concrete to a required depth such as shown at 14, FIG. 1.
Associated with the present water blaster vehicle 11 and mounted upon the road bed 13 or adjacent thereto is a water storage and pump vehicle 25 which has upon one side wall a high pressure water outlet 27, FIG. 1, to which is connected by a quick disconnect fitting 31 a flexible high pressure water hose 29 adapted to carry water under pressures up to 25,000 p.s.i. or the pressure required to remove the concrete. Hose 29 is adapted for connection by a similar quick disconnect fitting 35 to pressure water manifold 33 in the illustrative embodiment supportably mounted upon the roof of the vehicle 11, FIG. 1.
A secondary flexible high pressure water feed conduit 37 with suitable quick disconnect fitting 38 extends from manifold 33 and with an additional fitting 39 extends to support plate 41 slidably positioned over the transverse elongated slot 43 which extends along the length of top wall 45 of the transversely extending hood 47.
The hood 47 is generally of "A" shape or configuration and supportably mounts a suitable carriage 101 mounting the present rotating seal and shaft assembly 77.
Referring to FIG. 2, the water storage and pump vehicle 25 of FIG. 1 includes a bed 49 having suitable 12 volt batteries 50 and corresponding electric control system, an engine drive 51 such as in the illustrative embodiment a Cummins diesel drive 335 horsepower engine adapted for driving the pump 53. Mounted upon bed 49 is a suitable discharge manifold 54 which communicates with high pressure water outlet 75.
Fragmentarily shown in FIG. 2 is a water supply inlet 55 that communicates with receiver 57 for delivering water through the filters 59, conduit 61 into the pump 53 and from the pump 53 through conduit 63 into the water tank 65. Pressurized water from the tank 65 passes through the 5,000 watt generator 69 in a line 67 which includes water pressure gauge 71 which registers up to 30,000 p.s.i. and which has adjacent thereto a pressure relief valve 73 in the illustrative embodiment set at 20,500 p.s.i.
The high pressure water outlet 75 in FIG. 2 is adapted for connection through fitting 27, FIG. 1, to the high pressure hose or conduit 29 for delivery of the water to the pressure water manifold 33 located upon the water blaster vehicle 11 for subsequent delivery to the rotating seal and shaft assembly 77, shown in FIGS. 5 and 6, supported and mounted upon a carriage located within the hood 47.
Hood 47, FIG. 3, extends transversely of frame 19 along the "X" axis and includes a pair of laterally spaced hood supports 79 pivoted at 81 upon a pair of laterally spaced brackets 83 upon one end of frame 19. Control of the positioning of hood 47 from the lowered use position shown in FIG. 3, to an elevated non-use position is achieved by the cylinder assembly 85-91, FIG. 3.
Each cylinder assembly includes a lift cylinder 85 pivoted at 87 to a suitalbe bracket 89 upon frame 19 at opposites sides thereof. Each cylinder includes a reciprocal piston rod 91 at its outer end pivoted at 93 to the hood 47.
The vehicle motor 95 controls a suitable hydraulic pump 97 which under the direction of the manually operable or remote control directional valves 99 on frame 19 controls the operation of the cylinder assemblies 85-91 for controlling positioning of hood 47 such as to the use position shown closely adjacent road surface or road bed 13. Referring to FIG. 5, the elongated top wall 103 of the feed carriage 101 has formed therethrough an elongated slot 105 adapted to receive portions of the flexible connector hose 37.
The carriage 101 for the rotating seal and shaft assembly 77 includes an opposed pair of sidewalls 107 normally spaced inwardly from the adjacent opposed sidewalls 108 of hood 47. A pair of opposed elongated channel beams 109 are mounted and secured upon hood sidewalls 108. Mounted upon each of the beams 109 are the opposed vertically aligned guide rails 111 of V-shape.
The vertically aligned laterally spaced pairs of guide wheels 113 with corresponding V grooves 115 are journaled as at 116 upon sidewalls 107 of feed carriage 101 and are guidably positioned for reciprocal movements upon the corresponding guide rails 111, FIG. 5. By this construction the feed carriage 101 which mounts the rotating seal and shaft assembly 77 is adapted for controlled longitudinal transverse reciprocal movements along the "X" axis within the hood 47 which extends transversely across the end of the vehicle 11.
Forming a part of carriage 111 at its lower end is an apertured motor support plate 117. Spanning the aperture in the plate 117 is a mount plate 119 for rotating seal and shaft assembly 77 secured thereunder by a pair of fasteners 121. As shown in FIG. 6, rotating seal mount plate 119 has a central bore 123 adapted to receive the depending power rotated shaft 125 which has a longitudinal or axial bore or passageway 127.
Shaft 125 forms a part of the rotating seal and shaft assembly 77, shown in FIGS. 5 and 6. Referring to FIG. 6, the rotating seal and shaft assembly 77 includes cylindrical body 129 which at its lower end is positioned within the anchor ring 131 inset and welded within an annular groove within the mount plate 119 and secured thereto by a series of spaced radial socket head cap screws 135. Thus, body 129 is held against rotation.
Thrust bearing assembly 137, FIG. 6, is mounted upon the mount plate 119, is positioned within body 129 and axially supports the power rotated shaft 125. The longitudinal passageway 127 has an inlet 165 at is upper end.
A tubular thrust bearing insert or nut 139 is inserted onto shaft 125 where it engages the shoulder 141 of the shaft 125 for completing the assembly and journalling the shaft 125 within body 129 of the rotating seal and shaft assembly 77. The thrust bearing 137 is nested and retained within the bore 143 at the lower end of the body 129.
Portions of the thrust bearing insert 139 loosely nest within the counterbore 145 of body 129. A pair of longitudinally spaced roller bearings 147 are nested within corresponding counterbores 148 within the body 129. The upper bearing 147 guidably receives upper portions of the shaft 125 which is surrounded by the seal 149 within the body.
Adjacent the upper end surface of body 129, there is provided a centrally located cavity 153 through which the shaft 125 extends. Suitable packing 155 surrounds the shaft within cavity 153. A top cover 161 is secured to the body by suitable fasteners 157 and is sealed over the upper end of the body 129. An O-ring seal 159 is provided between cover 161 and the opposing surface of the body 129. The upper end of shaft 125 projects into bore 163 within the seal top cover 161. The corresponding shaft inlet 165 is nested within bore 163 for communication with counterbore 167 of the seal top cover 161 for communication with the secondary conduit 37 connected thereto by the fitting 169 which is threaded into the cover 161, FIG. 6. This provides a means of delivering pressurized water up to 25,000 p.s.i. or as required to perform the work from the manifold 33 into and through the passageway 127 of the power rotated shaft 125.
The enclosing hood 47 of FIG. 5 includes a bottom 171, fragmentarily shown in FIG. 6, which has therein a longitudinal slot 172 which receives the lower end of the shaft 125 as it projects below the hood bottom 171.
Rotatable nozzle block 175, fragmentarily shown in FIG. 6, also shown in FIG. 5, and in detail in FIGS. 7 and 8, includes a theaded shank 177 normally arranged in an axial or vertical position which projects into the internal threaded bore 179, FIG. 5, at the lower end of the shaft 125 and includes the integral fastener nut 180 for axially securing the nozzle block 175 to the shaft 125.
Referring to FIG. 7, an elongated nozzle block 175 has an axial fluid bore 181, with an axis 180, in communication with the rotating shaft bore 127, and terminates in the angular elongated bore 182, arranged at an acute angle to bore 181. Angular bore 182 is adapted to receive water under pressures up to, as an example, 25,000 p.s.i. At its outer end it has a counterbore 183 which is internally threaded and arranged along axis 184. The counterbore 183 threadedly receives the nozzle 185 having a replaceable outwardly converging carbide insert 187 which projects outwardly of the end surface 204 of the nozzle block 175, FIG. 7. Insert 187 terminates in the orifice 189. Nozzle 185 has an internal converging bore 191 adapted to frictionally and supportably receive insert 187 providing a means by which the insert 187 and orifice 189 may be replaced when worn. Arranged around nozzle block 175 intermediate its height is an annular protective shield or flange 193.
The nozzle block 175 includes a diverging body 195 and the end surface 204 which includes a central portion 196 normal to the vertical axis 180. Nozzle 185 terminates in a nut head 197 outwardly of one of the angular end faces 205 of end surface 204. This provides a means to facilitate threaded separation of nozzle 185 from the nozzle block 175 for replacement or for replacement of the carbide insert 187. The angular end faces 205 are also referred to herein as upwardly diverging outer portions 205. One of the end faces or outer portions 205 is normal to the axis of the elongated bore 182.
A modified nozzle block is shown at 199 in FIG. 8, similar in construction to nozzle block 175, FIG. 7. Nozzle block 199 includes a branch longitudinal bore 201 arranged at an acute angle to bore 182 providing for the secondary passage of pressurized fluids towards the end surface 203 of nozzle block 199.
End surfaces 204 and 203 of both of the nozzle blocks 175, 199 respectively include the upwardly tapered or outwardly diverging walls or end faces 205 on opposite sides of the flat central portion 196. The central portion 196 is normal to the vertical axis 180 and the end faces or diverging walls 205 extend at right angles to the corresponding axes of the respective passages 182 and 201. The end faces or portions 205 are at 15� angles to the central portion 196.
By the construction of the nozzle block 199 shown in FIG. 8, there is provided a means by which multiple angularly related water jets may be provided upon the lower end of the shaft 125 to improve the efficiency and effectiveness of the rotating seal and shaft assembly 77 for breaking up and removing structural concrete.
The rotating nozzle assembly including the rotating nozzle block 175, 199 and the nozzle(s) 185 is designed to cut a two inch path as the assembly rotates. The path can be adjusted for a smaller width or a larger width by changing the nozzle block.
Referring to FIGS. 5 and 6, there is shown a power drive assembly for the shaft 125 which is generally indicated at 207, FIG. 5, and includes hydraulic motor 209 whose anchor plate 211 is mounted within and upon motor support plate 117 and suitably secured thereto. The motor drive shaft 213 depends below plate 117 and mounts pulley 215 which, through pulley belt 217, is drivingly connected to a corresponding pulley 219 suitably secured and keyed upon the shaft 125, FIGS. 5 and 6. The detail of a pulley anchor is shown at 221, FIG. 6.
The power drive for the shaft 125 is closely adjacent the rotating seal and shaft assembly 77 such as shown in FIG. 5, with power directed to the shaft 125 by the corresponding pulleys 215, 219 and pulley belt 217.
Feed mechanism for the carriage 101 is shown in further detail in FIGS. 5 and 10 and is generally indicated at 223. Elongated drive shaft or tube 225 is journaled and supported at its ends within bearings 227 located upon end walls 229 of the hood 47 and is arranged centrally of the hood.
Reversible electric motor 231, FIG. 10, preferably of constant speed, and reversible, though variable speed is possible, is anchored at 233 on the top wall 45 of the hood 47. The motor 231 includes a drive shaft 235 connected by sprocket 237 and chain 239 and corresponding sprocket 241 to feed shaft 225, FIG. 10. A threadless nut assembly 243, sometimes referred to as a power spiral operator or actuator provides the means of transmitting rotary motion of shaft 225 to longitudinal movement of carriage 101.
In this construction and as shown in FIGS. 5 and 10, there is provided a first roller support block 245 having an anchor plate 247 upon the undersurface of the carriage cover 103. Block 245 mounts upon its opposite sides pairs of skewed rollers 249 whose axes of rotation are arranged at acute angles with respect to each other and which extend angularly upwardly and downwardly and are spaced apart. A portion of the first roller support block 245 is centrally cut away at 246 to receive a lower portion of the feed shaft 225. Respective skewed rollers 249 are journaled at 251 upon opposite sides of the upright support block 245.
Overlying the support block 245 is a top roller support block 253 which is similarly cut away at 246 to correspondingly receive an upper portion of feed shaft 225. Shown in FIG. 10, upon opposite ends of the top support block 253 are upright slots 255 which next compression springs 257 and receive adjustable fasteners 259 which extend through the springs and are adjustably threaded down into the first roller support block 245. Supportably mounted upon the top support block 253 upon its opposite sides are additional pairs of angularly skewed rollers 249 similarly journaled and mounted upon block 253 laterally spaced and skewed with respect to the other rollers upon the lower support block so as to engage around the feed shaft 225.
The arrangement of the skewed rollers 249 with respect to the shaft 225 and the frictional engagement therewith is such that power rotation of shaft 225 is adapted to effect longitudinal feed movements of the corresponding roller support blocks 245 and 253 and the connected carriage 101. By this construction, the carriage 101 is reciprocally fed along the length of feed shaft 125 which corresponds to the "X" axis.
The feed mechanism, sometimes referred to as a power spiral operator, presents a method for translating rotary motion of shaft 225 to linear motion of carriage 101. The actuator travels along the shaft by means of skewed rollers 249 which frictionally engage the shaft. In principal it may be compared to a nut traveling on a threaded shaft, except there are no threads involved.
Due to the frictional engagement of the rollers to the shaft 225, output force may be increased by increasing the pressure of engagement. This can be achieved by adjusting the fasteners 259 and in turn the compression in the corresponding springs 257. Likewise, because of such frictional engagement, any resistance to movement of the actuator greater than its output force will cause the rollers to slip or float on the shaft 225 and the actuator to stall while the shaft 225 continues to turn.
Reversal of the shaft rotation will reverse the direction of actuator travel. Accordingly, the drive motor 231 is reversible under remote, manual or automatic control so that the carriage 101 will feed in one direction along the length of the hood 47 and will reverse to feed in the opposite direction along the "X" axis.
The power spiral operator 243 requires no lubrication of any type. It is therefore virtually maintenance free. Compared to pneumatic and hydraulic systems, bulkness, and the complexity of available electric actuators, the present power spiral operator 243 is a mechanical device capable of withstanding extreme working conditions.
In the illustrative embodiment, the lead provided is 3" per single revolution of shaft 225. The thrust can be controlled between 0 and 600 pounds by regulating the amount of frictional engagement of the skewed feed rollers 249 with respect to shaft 225.
Referring to FIG. 9, a steering assembly 261 is shown under remote control at 275, FIG. 3, controlling the angularity of the single steering wheel 23 upon vertical axis 263. Yoke support 262, FIG. 3, for the wheel 23 is mounted upon vertical axis 263, FIG. 9, for rotation from the central position shown. Elongated steering arm 265 at one end is connected to wheel support 262 at the vertical axis of rotation 263.
The cylinder assembly includes a cylinder 267 which is pivotally mounted at 268 to a portion of the vehicle frame on a vertical axis and includes a reciprocal piston rod 269 which at its outer end is pivotally connected as at 271 to steering arm 265.
A series of remote control valves 723 are shown in FIG. 9, controlling operation of the hydraulic cylinder 267. One form of manual control for steering is shown at 275, FIG. 3, whereby the activation of the respective control valves 273 will determine the positioning of piston rod 269 with respect to cylinder 267 such as will turn the wheel 23 in one direction or the other from the central position shown in FIG. 9. It may be under manual control at 275, FIG. 3. Also shown at 277 is a manual remote control for forward and reverse for effecting incremental forward or reverse feed movements of the vehicle 11 over the road surface 13.
A further remote control is shown at 279, FIG. 9, with sufficient buttons for effecting the remote control of manual steering and remote control of incremental forward feed movements of the vehicle.
The concrete blaster guides the traverse motion of the rotating high pressure nozzle. The concrete blaster vehicle 11 has a hood length for a 78 inch wide cut or a hood length for a 156 inch wide cut, measured along the "X" axis.
The high pressure nozzle rotation is important to high productivity and efficiency. This system is designed to remove up to 200 square feet, one inch deep of material per hour. This is equivalent to 30 laborers using jackhammers.
The nozzle assembly 175 is mounted to the carriage which rides within the hood 77. After the rotating seal and shaft assembly has completed a preset number of strokes, the machine indexes automatically a distance which corresponds to the width of the cut. This design moves the nozzle in a circular path at high speed as it advances--producing much higher efficiency than prior art stationary nozzles.
Repetitive passes of the rotating nozzle assembly over the same concrete material is made until the material is cleanly blasted away, at which time the longitudinal travel of the machine is advanced. The number of passes, and pass direction, nozzle blast diameter and travel advance distance data is predetermined based on test strip information.
A modification of the water blaster vehicle 11 is shown in FIG. 4. The modified hood assembly 281 contains the X-axis and is arranged for movement along the guide rails 285 which are parallel to the Y-axis.
A hydraulic drive motor in the form of the rotating-seal and shaft assembly 77 described previously is mounted for rotary movement along the X-axis as described previously. A hydraulic cylinder 287 is connected to the rotating shaft of the drive motor.
The raising and lowering by the cylinder assembly 85, 91 is the same as described with respect to FIG. 3. The carriage designated at 283 for moving the power motor drive assembly 77 along the Y-axis is mounted upon the guide rails 285 employing guide rollers 291 similar to guide rollers 113, described with respect to FIGS. 5 and 10. The rotating shaft and seal assembly 77 is attached to a threadless drive nut 289 for movement along the pipe or rod 290 in the direction of the X-axis.
The electrical circuit 292 shown in FIG. 11 illustrates the controls for traverse reciprocal movements of the carriage and the rotation seal assembly 77. A suitable 12 volt power source 293 is shown for the circuit which includes off-on switch 295 and branch lead 297 connected to manual switch 299 for controlling solenoid 301 directed to one of the valves 99, FIG. 3, for controlling the lift cylinder 85 for effecting an advance movement of piston rod 81 and a lifting of the hood 47.
Branch lead 303 includes manual switch 305 for controlling the solenoid 307 directed to one of the control valves 99 for cylinder 85 for causing retraction of the piston rod such as would lower the hood 47 to the use position shown in down position, FIG. 3. Double acting traverse and reverse switch 309 forms a part of the circuit 291 and is connected to motor 231 for controlling electric power for manual control of the advance and return of feed assembly or power spiral operator 243 for carriage 101, FIGS. 5 and 10.
Also shown in FIG. 11 within circuit 292 is a tachometer 311 having a numerical readout at 313 connected by lead 317 into circuit 291 and the magnetic pick-up 315 adapted for registry with the shaft 125 of the rotating seal assembly 77 counting rotations of the shaft.
Normally, in the use of the water blaster vehicle 11, FIG. 1, there is associated with respect to high pressure water outlet 75 (FIG. 2) the usual dump valve assembly by which water is recirculated between the tank and the pump until water is to be directed to the flexible conduit 29 to the pressure water manifold. Under those circumstances, a suitable electrical control reverses the dump valve so that full pressure flow up to 25,000 p.s.i., as an example, is available through conduit 29 to the rotating seal and shaft assembly 77.
The present invention is also directed to the method of removing structural concrete from a road bed which comprises the following steps:
(1) Mounting a vehicle apparatus 11 upon a road bed 13 for longitudinal intermittent incremental forward feed movements thereover;
(2) Pivotally supporting a hood 47 upon the vehicle apparatus having a lowered position closely adjacent the road bed and an elevated position;
(3) Positioning a water pressure manifold 33 upon the vehicle apparatus 11 connected to a source of pressurized water as through conduit 29 and conduit 37;
(4) Movably and reciprocally mounting a feed carriage 101 within and upon hood 47;
(5) Mounting a rotating seal and shaft assembly 77 upon the carriage 101 including a depending power rotated shaft 125; and
(6) Supporting at least one nozzle block 175 having an angular bore 182 and an orifice 185 for connection to and rotation within the shaft 125 for sequentially penetrating and pulverizing the concrete of a roadway, for illustration, by impingement of high pressure rotating water jets upon the concrete with the rotating seal and shaft assembly 77 reciprocating back and forth over the work area removing structural concrete to a required depth and for removing surface scale and corrosion from the concrete reinforcing rebars, and successively advancing the apparatus over the road bed. The nozzle block may have at least one additional orifice 185, FIG. 8.
The sequential penetrating and pulverizing action of the high pressure rotating water jets entering between and beneath the aggregate particles, not only removes the concrete immediately surrounding embedded reinforcing bars, but also effectively removes surface scale and corrosion from such bars, conditioning them to form a strong bond with fresh concrete to be poured around them.
The incident angle of the rotational water jets to the concrete surface may be varied by varying at different angles of the delivery passages 182 with respect to vertical axis 181. This enhances the removal action in places otherwise difficult to reach such as beneath and behind reinforcing bars or composites of such bars.
Having described our invention, reference should now be had to the following claims:
|Cited Patent
|Filing date
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|William Mall Arthur
|Terrazzo grinding angle spindle
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|Plumb Charles C
|Apparatus for cleaning road surfaces
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|Jan 25, 1966
|Atlantic Refining Co
|Apparatus and method for earth drilling
|Jul 30, 1969
|Oct 19, 1971
|Inst Gas Technology
|Low noise process for breaking pavement which relies upon reflected tensile pulses to fracture the pavement
|Mar 1, 1971
|Sep 5, 1972
|Lock Everett H
|Method and apparatus for replacing nozzles in erosion bits
|May 17, 1972
|Dec 11, 1973
|Inst Gas Technology
|Low-noise process for pavement fragmentation
|Apr 10, 1972
|Feb 19, 1974
|Inst Gas Technology
|Process for removing asphalt topping from pavement substrate
|Apr 20, 1972
|Mar 12, 1974
|Environment One Corp
|Process and apparatus for mining by hydroelectric pulsed liquid jets
|Jan 12, 1973
|May 21, 1974
|Flow Research Inc
|High pressure fluid intensifier and method
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|Dec 31, 1974
|Noren C
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|Sep 16, 1975
|Flow Research Inc
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|Jun 1, 1976
|Atlas Copco Aktiebolag
|Cutters and methods of cutting
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|Flow Industries, Inc.
|Reciprocating pump check valve assembly
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|Flow Industries, Inc.
|Method and apparatus to remove structural concrete
|Sep 5, 1975
|Sep 5, 1978
|Liesveld Daniel J
|Method and apparatus for channel cutting of hard materials using high velocity fluid jets
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|Oct 10, 1978
|The Curators Of The University Of Missouri
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|Atlas Copco Ab
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|Aug 26, 1980
|Nlb Corporation
|High pressure water cleaning device for floors, gratings, and paint laden handling devices
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|Sep 9, 1980
|The Curators Of The University Of Missouri
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|Nov 13, 1979
|Sep 15, 1981
|Atlas Copco Aktiebolag
|Method and device for breaking a hard compact material
|Oct 22, 1985
|Aug 4, 1987
|Electric Power Research Institute, Inc.
|High pressure fluid jet apparatus for cutting and removing pavement
|Citing Patent
|Filing date
|Publication date
|Dec 31, 1986
|Aug 8, 1989
|Indescor Hydrodynamics Inc.
|Method and apparatus for removal of surface material
|Dec 17, 1990
|Dec 8, 1992
|Sybron Chemicals, Inc.
|Fluid driven tank cleaning apparatus
|Aug 21, 1991
|Nov 8, 1994
|Aquajet Systems Ab
|Device for material removing processing of a material layer
|May 28, 1993
|Jan 30, 1996
|Electric Power Research Institute, Inc.
|Apparatus for pneumatic excavation
|Sep 9, 1999
|Aug 14, 2001
|Robert C. Rajewski
|Hydrovac excavating blast wand
|Sep 7, 2000
|Apr 15, 2003
|Robert C. Rajewski
|Mud tank cleaning system
|Jul 27, 2001
|Aug 19, 2003
|Robert C. Rajewski
|Mud tank cleaning system
|Jan 11, 2001
|Jan 13, 2004
|Dyk Incorporated
|Method and apparatus for texturizing tank walls
|Oct 10, 2001
|Apr 12, 2005
|Conjet Ab
|Method of working a concrete surface
|Apr 18, 2003
|Oct 11, 2005
|Waterwerks Inc.
|Substrate removal apparatus
|Sep 6, 2005
|Aug 29, 2006
|Waterwerks Inc.
|Substrate removal apparatus
|Sep 9, 2005
|Jul 8, 2008
|Hall David R
|Pavement degradation tools in a ganged configuration
|Aug 20, 2007
|Sep 21, 2010
|Hall David R
|Nozzle for a pavement reconditioning machine
|Oct 9, 2008
|Nov 22, 2011
|Storms John R
|Surface cleaning apparatus
|Jul 6, 2009
|Nov 20, 2012
|Stoltzfus Daniel R
|Apparatus for moving concrete pump hoses
|Feb 17, 2010
|Jun 16, 2015
|Ronald C. Benson
|System and method for managing and maintaining abrasive blasting machines
|Oct 15, 2015
|Oct 25, 2016
|Mac & Mac Hydrodemolition Inc.
|Shielding system for hydrodemolition apparatus
|Jan 11, 2001
|Dec 12, 2002
|Bristol Gordon B.
|Method and apparatus for texturizing tank walls
|Oct 10, 2001
|Sep 4, 2003
|Carl Akesson Stromdahl
|Method of working a concrete surface
|Sep 9, 2005
|Sep 7, 2006
|Mr. David Hall
|Pavement Degradation Tools in a Ganged Configuration
|Aug 20, 2007
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|Hall David R
|Nozzle for a Pavement Reconditioning Machine
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|U.S. Classification
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|International Classification
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Owner name: NLB CORPORATION, 29830 BECK ROAD, WIXOM, STATE MIC
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNORS:SHOOK, FORREST A.;DE SANTIS, GERARD J.;REEL/FRAME:004596/0797
Effective date: 19860814
|Oct 7, 1991
|Fee payment
Year of fee payment: 4
|Nov 2, 1995
|Fee payment
Year of fee payment: 8
|Nov 24, 1999
|Fee payment
Year of fee payment: 12


text:
Extending from 155th Street to Dyckman Street, Washington Heights is home to some of the most interesting geographic features in Manhattan.
The neighborhood's lofty name is derived from the fact that—at 256 feet above sea level—it is situated at the highest point in Manhattan. Because of its steep inclines, numerous "step" streets (one of which has 130 stairs) connect one street to the next.
The population of Washington Heights is over 150,000.learn more about this neighborhood
#51Neighborhood popularity:based on Naked Apartments searches
Building Mix
- 37% Pre War
- 27% Elevator/Laundry Building
- 18% Elevator Building
- 12% Walk-Up
- 2% Post War
Legal Disclosure: Neighborhood descriptions and data are created exclusively by Naked Apartments without contributions or approval from the agents listed on this page.
Pinehurst Avenue by Petri_Krohn is licensed under CC BY-SA 3.0
Live the dream in Washington Heights, get more for your money and just a quick train ride to Manhattan!Did you know Washington Heights is totally gorgeous?? Tons of NYC renters in the know have passed over trendy W-burg and Bushwick in favor of the beauty of Washington Heights...join them!Unbelievable 3bed deal for $2850, plenty of space near trains...call, text, or email today!
Apartment Details
$2,850, Three Bedrooms, 1.0 Bathroom
Last Updated Over 4 Years
Listed For Over 4 Years
Available Immediately
Pets: No Pets
- 0 sq. ft.
- Web ID: NKA_Bond_273474
Nearby Subway Stations
1157th St (0.17 mi)
C163rd St (0.3 mi)
C155th St (0.44 mi)
A C 1168th St (0.46 mi)
B155th St (0.62 mi)
1145th St (0.73 mi)
A175th St (0.76 mi)
A C B D145th St (0.86 mi)
3148th St (0.95 mi)
A181st St (1.08 mi)


text:
SY7 file extension - Synchro Studio 7 output file
What is sy7 file? How to open sy7 files?
File type specification:
The SY7 file extension is associated with the Synchro Studio 7. SY7 is output file, that is used for traffic coordination and simulation.
The default software associated to sy7 file type:
Company or developer:
Trafficware Ltd.
Synchro is a macroscopic analysis and optimization software application from Trafficware Ltd. Synchro implements the Intersection Capacity Utilization (ICU) 2003 method for determining intersection capacity.
List of recommended software applications associated to the .sy7 file extension
Recommended software programs are sorted by OS platform (Windows, macOS, Linux etc.) and possible program actions
that can be done with the file: like open sy7 file, edit sy7 file, convert sy7 file, view sy7 file, play sy7 file etc. (if exist software for corresponding action in File-Extensions.org's database).
- Others sy7 file
Unspecified and all other actions for computer programs working with sy7 file - Synchro Studio 7 output file
Click on the software link for more information about Synchro Studio. Synchro Studio uses sy7 file type for its internal purposes and/or also by different way than common edit or open file actions (eg. to install/execute/support an application itself, to store application or user data, configure program etc.).


text: Exceptionally fast, convenient and versatile. PC/Mac®-connected label printer lets you label, mail and file smarter with DYMO® Productivity Software. Powerful and intuitve label software includes an integrated address book that makes it easier to select and filter multiple addresses. Add-ins allow one-click printing from popular software programs such as Microsoft® Word, Excel®, Outlook®, QuickBooks® and CardScan®. Address Fixer™ corrects addresses from the USPS database and adds in full zip code and postal bar code. Prints 56 label styles in eight categories plus USPS®-approved No-Monthly-Fee DYMO Stamps™ postage labels. Includes over 60 label layouts, just click and select. Scan your paper files and convert them to digital with DYMO File™ LT. Links directly to the DYMO® website for instant access to help, tips, tricks and more. 600 x 300 dpi resolution. Cost-effective, efficient direct thermal printing-no ink or toner required! New "sleep mode" conserves energy. Label guide feature ensures that each label prints perfectly. Compact design saves valuable work space. Compatible with Windows® and Mac®.


text:
Ga-Rei -Zero-: Priestesses in Disguise!?
First of all, happy belated New Year to everyone! :D
So a few days ago, I got around to watching Ga-Rei -Zero- after seeing it appear in basically every anime blog I visit. It was too bad that I had seen enough spoilers to know what basically happens to "the gang" in episode one, but it definitely made the list of my favourites from 2008.
But anyways… am I the only one that thought "KANNAZUKI NO MIKO!?" when I watched the last episode?
[Ending spoilers for both series ahead]


text:
Getting our little shop ready for Easter
It's Pigeon Weekend this weekend - we like to be prepared!!
This thing is going through a LOT of batteries!!
Finished this clock today - quite chuffed with it. Personalised clocks - any design from £ 25
Personalised Key Rings from £4 - any text/design made in acrylic, beech plywood or MDF
We ran out of business cards and so we decided to make some key rings instead. These will last longer and get more noticed than a business card (we hope). Only another 482 to add rings to then....thats my Monday night taken care of!
Wooden Box with Living Hinge
Your box is made from saplings of the Beech tree formed into plywood and presented to us in 3mm sheets. This trinket / book / keepsake box has a sliding latch mechanism.
To finish the product we acquired the ear wax from a 1000 bees and gently rubbed it into the soft wood which has put a lovely sheen on it. (Please note if we run out of bees we will use beeswax...which we think is the same thing)
Cashmere wool has been added to strengthen the hinge so your box will last for many years (please note if we run out of cashmere we will use black felt)
The box features a "living hinge" - fine laser cuts into the wood to enable it to bend
It takes 3 days to make - we like to take our time.
As far as we are aware no trees were replaced etc etc
Length - 7 and three quarter inches (195mm)
Width- 6 and three quarter inches (172mm)
Depth - 1 and a half inches (40mm)
Priced at £25 + £1.40 p&p
Fanastic time hotel made up for the terrible weather. Can't wait to arrange for a second helping if your ears can stand my singing. [View more comments]


text:
By now you know the heir apparent at Microsoft MSFT 1.3740458015267176% Microsoft Corp. U.S.: Nasdaq USD66.4 0.9 1.3740458015267176% /Date(1492808400104-0500)/ Volume (Delayed 15m) : 31509453 AFTER HOURS USD66.48 0.0799999999999983 0.12048192771084337% Volume (Delayed 15m) : 1013992 P/E Ratio 31.32075471698113 Market Cap 513107989525.65 Dividend Yield 2.3493975903614457% Rev. per Employee 747982 More quote details and news » has left the building. Steven Sinofsky, who ran Microsoft's Windows division, worth 25% of the company's annual revenue and more than half its operating profit—and who worked at the company for 23 years—announced Monday he was leaving for "personal reasons."
There's not a lot to be gleaned from Sinofsky's departure about the immediate health of Microsoft (ticker: MSFT).
Reports in the papers said there were personality conflicts and a lack of team spirit on Sinofsky's part, but it's a big company with many talented individuals, and Microsoft has survived numerous departures over the years.
The shakeup itself seems far less important than the symbolic value of the event. Microsoft, like much of the PC industry, is grappling with a change far broader than the immediate health of Windows.
As Barron's said a month ago in our cover story on the future of the PC ("Bye-Bye, PCs," Oct. 22), the winds are blowing ill these days for the traditional computing business. Signs of that change continue to mount, and as they do, stocks at the heart of the PC business become cheaper and cheaper.
Microsoft trades for eight times next year's earnings; Intel INTC 0.3869541182974019% Intel Corp. U.S.: Nasdaq USD36.32 0.14 0.3869541182974019% /Date(1492808400389-0500)/ Volume (Delayed 15m) : 19719829 AFTER HOURS USD36.32 % Volume (Delayed 15m) : 670684 P/E Ratio 17.213270142180093 Market Cap 171345770122.781 Dividend Yield 3.001101321585903% Rev. per Employee 560255 More quote details and news » (INTC) trades for 10 times next year's earnings, Dell (DELL) fetches a little over five times, Hewlett-Packard HPQ -1.2419006479481642% HP Inc. U.S.: NYSE USD18.29 -0.23 -1.2419006479481642% /Date(1492808533402-0500)/ Volume (Delayed 15m) : 9821701 AFTER HOURS USD18.34 0.0500000000000007 0.2733734281027884% Volume (Delayed 15m) : 131526 P/E Ratio 12.613793103448275 Market Cap 30971921839.6423 Dividend Yield 2.9021323127392016% Rev. per Employee 992898 More quote details and news » (HPQ), an astoundingly low 3.7 times, and disk-drive makers Western Digital WDC -1.540101883663073% Western Digital Corp. U.S.: Nasdaq USD83.11 -1.3 -1.540101883663073% /Date(1492808400280-0500)/ Volume (Delayed 15m) : 2634879 AFTER HOURS USD83.11 % Volume (Delayed 15m) : 35648 P/E Ratio N/A Market Cap 23941498484.5398 Dividend Yield 2.406449284081338% Rev. per Employee 218434 More quote details and news » (WDC) and Seagate Technology STX -0.5973223480947477% Seagate Technology PLC U.S.: Nasdaq USD48.26 -0.29 -0.5973223480947477% /Date(1492808400493-0500)/ Volume (Delayed 15m) : 3281141 AFTER HOURS USD48.23 -0.0300000000000011 -0.06216328222130128% Volume (Delayed 15m) : 78306 P/E Ratio 28.22222222222222 Market Cap 14245241618.813 Dividend Yield 5.221715706589308% Rev. per Employee 240440 More quote details and news » (STX), just under five times.
Are any of these stocks worth dipping in a toe? Probably not.
The latest sign of the slide in the PC world was Dell's fiscal third-quarter report last Thursday, in which revenue missed analysts' expectations. The worst part of the report was the part that touched on PC demand. Consumer revenue fell by 23%, while sales of "mobility" products, primarily laptop computers, fell by 26%.
Plenty of other anecdotal evidence points to the rise of the non-PC world. Networking-equipment vendor F5 Networks FFIV -0.24110469788850733% F5 Networks Inc. U.S.: Nasdaq USD136.54 -0.33 -0.24110469788850733% /Date(1492808400361-0500)/ Volume (Delayed 15m) : 758125 AFTER HOURS USD136.54 % Volume (Delayed 15m) : 53669 P/E Ratio 24.557553956834532 Market Cap 8846153360.03539 Dividend Yield N/A Rev. per Employee 459956 More quote details and news » (FFIV) told analysts on Thursday at its annual investment forum that by 2020, 71% of all computing work done by individuals will be "mobile or Web-based."
Another tidbit came on Thursday from tax-software maker Intuit INTU 0.07609706603534286% Intuit Inc. U.S.: Nasdaq USD118.36 0.09 0.07609706603534286% /Date(1492808400270-0500)/ Volume (Delayed 15m) : 2339899 AFTER HOURS USD118.36 % Volume (Delayed 15m) : 69616 P/E Ratio 38.88815875936391 Market Cap 30274713189.566 Dividend Yield 1.1490368367691788% Rev. per Employee 614177 More quote details and news » (INTU), which expects to increase its sales of mobile versions of its software by 50% next year, as opposed to the traditional desktop versions of programs such as TurboTax. The important thing is that those mobile users are actually using the software more, because they always have a tablet or smartphone with them, Intuit CEO Brad Smith told me last week.
Mobile applications themselves are getting more sophisticated all the time. Citrix Systems CTXS -0.6931994741245369% Citrix Systems Inc. U.S.: Nasdaq USD83.09 -0.58 -0.6931994741245369% /Date(1492808400347-0500)/ Volume (Delayed 15m) : 1279788 AFTER HOURS USD83.09 % Volume (Delayed 15m) : 17341 P/E Ratio 24.366568914956012 Market Cap 12991287523.2776 Dividend Yield N/A Rev. per Employee 356069 More quote details and news » (CTXS), a maker of software for enterprise, is finding more ways to make apps for Apple's AAPL -0.11934849761303004% Apple Inc. U.S.: Nasdaq USD142.27 -0.17 -0.11934849761303004% /Date(1492808400315-0500)/ Volume (Delayed 15m) : 16645033 AFTER HOURS USD142.24 -0.0300000000000011 -0.021086666198074085% Volume (Delayed 15m) : 675895 P/E Ratio 17.038323353293414 Market Cap 746425273773.059 Dividend Yield 1.6025866310536305% Rev. per Employee 1874840 More quote details and news » (AAPL) iPad more nimble than anything on the desktop, as was made clear to me from an interview with the company's chief strategist, Mick Hollison, last week. "It feels just like using the normal corporate applications rather than like you've entered some strange alien world," Hollison says of the way the typical "virtual private network" connection feels on a mobile device.
All these trends point to a world increasingly moving away from desktops and laptops.
DELL'S STOCK IS CHEAP, but that isn't a reason to bid for it as long as the PC business is a millstone around its neck, says Tony Ursillo of Loomis Sayles, which doesn't own the stock. "When the fundamentals are bad, a stock is never too cheap," Ursillo says.
"The company is still too heavily tied to the big PC and server markets that are in permanent contraction, and the tablet market is ultracompetitive," he adds.
As for Intel, Delphi Investment's Scott Black says it's "a great company, but it's in a bad neighborhood." Adds the Barron's Roundtable member, "I wouldn't want to be buying the stock based on Windows 8 being their only opportunity."
Black instead recommends EMC (EMC), the maker of storage equipment that he sees benefiting from cloud computing. EMC owns 79% of software maker VMware vmw -1.0994992379708253% VMware Inc. U.S.: NYSE USD90.85 -1.01 -1.0994992379708253% /Date(1492808600752-0500)/ Volume (Delayed 15m) : 2192136 AFTER HOURS USD90.85 % Volume (Delayed 15m) : 10659 P/E Ratio 32.34477356878382 Market Cap 37180452675.6271 Dividend Yield N/A Rev. per Employee 356432 More quote details and news » (VMW), currently trading at $85.81 a share. "Take out the part of VMware that they own, and you've got a $20 stock with $1.95 in earnings next year," says Black. EMC trades at $23.56.
Although Qualcomm QCOM -0.3038359285985568% Qualcomm Inc. U.S.: Nasdaq USD52.5 -0.16 -0.3038359285985568% /Date(1492808400115-0500)/ Volume (Delayed 15m) : 10451407 AFTER HOURS USD52.45 -0.0499999999999972 -0.09523809523809523% Volume (Delayed 15m) : 500132 P/E Ratio 17.5 Market Cap 77565443115.2344 Dividend Yield 4.3428571428571425% Rev. per Employee 762066 More quote details and news » (QCOM) has run up to $62, he observes, "at least they've got lots of dynamic growth" as a result of their wireless chips being in many of the tablets and smartphones leading the post-PC revolution.
Some, of course, will point to the fact that Dell and Microsoft and others have made a concerted effort to diversify their business away from being just PCs. At the moment, that trend isn't helping much because it isn't just PCs that are breaking down.
As Goldman Sachs' Bill Shope, who has a Sell rating on Dell, wrote in a note to clients on Friday, "in large enterprise, Dell posted revenue declines of 8% as the company saw deferrals of discretionary IT-hardware purchases from many large commercial customers."
The decline in enteprise spending is something Barclays Capital's Ben Reitzes described last week as a "capital strike," with businesses holding off on buying infrastructure, either because of global macroeconomic concerns or as they await the consequences of the fiscal cliff.
As Reitzes sees things, "Housing is improving, consumption is stable, but the business sector has weakened."
In other words, Dell is getting squeezed between a PC market that's been lagging for some time now, and a corporate market for servers and storage that isn't picking up the slack.
I wouldn't rule out the beaten-down PC names being worth another look at some point, but not while the balance of evidence against the PC market continues to increase, rather than decrease.
WITH THAT GRIM OUTLOOK, it's no wonder investors in tech are desperate for a new buzz. An article last Tuesday by SmartMoney.com reporter Quentin Fottrell seems to have been the catalyst that propelled medical-marijuana vending-machine maker MedBox (MDBX) to a lifetime high, if you will. MedBox, noted Fottrell, might be one way to play Washington's and Colorado's recent ballot initiatives legalizing recreational pot use.
The shares briefly surged to $215, giving the company, which had just $3.4 million in revenue last year, a $4.5 billion market value. Like many other heady tech stories, this one was up in smoke in short order, as shares fell back by 90%, on Friday to close at $20.
Tiernan Ray can be reached at email@example.com or at blogs.barrons.com/techtraderdaily or www.twitter.com/barronstech.