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Worthless, Impossible and Stupid: How Contrarian Entrepreneurs Create and Capture Extraordinary Value Hardcover – July 9, 2013
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Isenberg excels at breaking down the many elements that lead to entrepreneurial success." BARRONS
a thought-provoking book about the contrary nature of successful entrepreneurs." Financial Times
Isenberg effectively captures the varied landscape of new and innovative work, and inspiring stories and coverage of many different kinds of businesses fully support his premise." Publishers Weekly
There is a guy called Daniel Isenberg I don't really know him but he is a big deal and writes and talks a fair bit about entrepreneurship. He's written a book that I feel touches on some interesting points about entrepreneurship. Brad Feld, co-founder of Techstars, likes it so there must be something to it." Michelle Atagana, VentureBurn.com
a fascinating book it will challenge your assumptions about what it takes to be a successful entrepreneur and provide valuable insights into why and how those who are successful made it work. If you've ever wondered what it takes to become a successful entrepreneur, you'll want to read Worthless, Impossible, and Stupid: How Contrarian Entrepreneurs Create and Capture Extraordinary Value, by Daniel Isenberg." Jeanne Destro, USA Today
there is an abundance of great nuggets of knowledge in this book as well as frank confessions about how hard it usually is to create truly great companies. That kind of intelligence is not worthless, impossible or stupid." The Financial Times
provocative, insightful, inspiring, and fun to read." Choice magazine
presents a part motivational and part self-help guide for aspiring entrepreneurs." Book News
In Worthless...' Daniel Isenberg shatters the following two misconceptions: 1. The myth of the stroke of genius: most value creation is produced at the level of what Isenberg calls minnovation": small and unexpected twists on existing ideas, business models or products and services. 2. The myth of the expert: experts are not always the best positioned to be innovative. A novice's fresh perspective can help to overcome barriers and discover opportunities that experts may be blind to." Business Digest
ADVANCE PRAISE for Worthless, Impossible, and Stupid:
Brad Feld, Managing Director, Foundry Group; cofounder, TechStars; and author, Startup Communities: Building an Entrepreneurial Ecosystem in Your City
Worthless, Impossible, and Stupid is a thought-provoking book for anyone interested in understanding the deeply contrarian nature of many entrepreneurs. It challenges the status quo definitions of entrepreneurship with substantive examples from all over the world. A must-read for building start-up communities."
Jonathan Ortmans, President, Global Entrepreneurship Week, and Senior Fellow, Ewing Marion Kauffman Foundation
Daniel Isenberg's bottom-up insights are a must-read for policymakers around the world racing to build smarter environments for starting and scaling firms."
Esther Dyson, Chairman, EDventure Holdings
Worthless, Impossible, and Stupid confounds the stereotypes. The book vividly illustrates that entrepreneurs don't all look like Steve Jobs or Mark Zuckerberg or Sergey Brin; they don't all live in Silicon Valley. And most important, they do more than create start-ups that make novel products or solve problems; they build companies of lasting value."
Jim McCann, founder and CEO, 1-800-Flowers.com and Celebrations.com
Daniel Isenberg manages to turn the words worthless, impossible, and stupid' into the highest form of praise by getting inside the minds of real-life entrepreneurs to explain how counterintuitive thinking (and a sometimes inexplicable indifference to failure) have helped create and often revolutionize global business."
Yossi Vardi, serial internet entrepreneur
Daniel Isenberg's book sheds a whole new light on the nature of entrepreneurship, of entrepreneurs, and of business opportunity more broadly. Original, thought-provoking, and fun to read, it blows up a lot of truisms about this important topic."
Linda Rottenberg, cofounder and CEO, Endeavor Global
Calling all contrarians: If you've taken great risks, confronted skeptics and setbacks, and unleashed extraordinary value, you'll recognize yourself in this important new book by Daniel Isenberg. Worthless, Impossible, and Stupid perfectly captures the ups and downs of the entrepreneurial path, felling a great many myths along the way."
Calestous Juma, professor, Harvard Kennedy School; author, The New Harvest: Agricultural Innovation in Africa
This book is a real threat to conventional theories on business development. Its lessons apply in many other fields of human endeavor. Anyone interested in changing the world for the better should read it."
Grégoire Sentilhes, CEO, NextStage; cofounder, G20 Young Entrepreneur Alliance
Like Steve Jobs, Jeff Bezos, François Pinault, Diego Della Valle, and so many other great entrepreneurs, Daniel Isenberg is a contrarian and provocative thinker. Worthless, Impossible, and Stupid accurately demonstrates why being an outstanding entrepreneur is not about age, expertise, or reason; it is about vision, courage, and mind-set."
Akin Öngör, former CEO, Garanti Bank
In this provocative book, Daniel Isenberg shatters stereotypes and clarifies the often misunderstood concept of entrepreneurship. His inspiring real-life examples prove that true value is often found where many can only see something that seems worthless, impossible, or stupid."
Sir Ronald Cohen, cofounder and former Chairman, Apax Partners
Valuable, practical, and insightful, Daniel Isenberg's new book is a very helpful and illustrative guide to the entrepreneurial journey."
Maria Pinelli, Global Vice Chair of Strategic Growth Markets, Ernst & Young
Entrepreneurship is so important for a healthy economy: It creates jobs, supports communities, and builds a better working world. Worthless, Impossible, and Stupid provides a sophisticated and provocative narrative on this crucial topic."
Nick Lazaris, former CEO, Keurig
Entrepreneurs take note. Daniel Isenberg makes his contrarian point clear in this provocative book: Entrepreneurs need to be as innovative in finding ways to capture value as they are in creating it. This will be good for them individually and for the society that benefits from entrepreneurialism."
Mikko Kosonen, President, The Finnish Innovation Fund Sitra
Daniel Isenberg brings us back to the roots of entrepreneurship: It's all about identifying, creating, and capturing value, in areas not seen by others and that may seem worthless, impossible, and stupid. But there are real rewards for the hard-headed entrepreneurand for the rest of us!"
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Top Customer Reviews
I bought the Kindle edition of this book.
The Kindle opens up to an inside page (I forget which page, something like page 4 or 5 or so.) I think every Kindle book I've bought does this. I've often wondered why the do not open to the "cover" during the first "opening" of the ebook.
The cover photo is low-resolution and looks jaggy. The image looks as if someone picked up a dirty printed edition, creased it in half and then scanned it. Not sure if this is intentional or what. It looks wrong.
I winced while reading the third paragraph, which states "tough bloody s***." So what's the deal with this? Is this book about colon cancer? Hemorrhoids? The author quotes a businessman later in the book as saying this phrase. I would have found a better quote. It comes off as low-class.
"How this book came to be" is a subsection in the preface. It reads like what I'd expect to see in the "About the author" section and seemed out-of-place at the beginning of the book. "Israel" is mentioned 23 times in about five pages, which struck me as excessive.
Fortunately, once you get past the preface the book gets on track. Notes I took down include:
- entrepreneurship is the contrarian perception, creation and capture of extraordinary value.
- copying existing business models is great.
- ideas are one thing, but real value is in execution
- Innovation can be small yet profitable (Cinemex example)
- upscale folks as well as the poverty-stricken (surprisingly) customers can make one rich.
- You don't have to be an expert in a field to start a business.Read more ›
"Worthless is about how so many people from around the world see hidden value in situations where others do not. These people then use that perception to successfully develop valuable products and services that customers usually initially don't think they want, and ultimately go on to realize extraordinary value for themselves." So what? Isenberg's response: "A paradox: despite their statistical rarity in creating extraordinary value, most of the entrepreneurs in these pages will strike you as ordinary people like you and me. The differences between them and us are less a matter of who they are or what resources they have than of what and how they think.Read more ›
Most Recent Customer Reviews
"Worthless, Impossible and Stupid" serves as a stirring review of the global reach of entrepreneurship. Read morePublished 20 months ago by Andy Orrock
I like author's perspective on startup. There is no safe way for entreprenur. ( most people are waiting to play safe). Read morePublished on June 25, 2014 by WC
If you are in need of a lateral perspective on entrepreneurs, this book is for you.
I thoroughly enjoy this book.
Daniel Isenberg's book is subtitled, "How contrarian entrepreneurs create and capture extraordinary vale. Read morePublished on January 20, 2014 by William Keyser, Venture Founders LLC
The book contains interesting stories from entrepreneurs around the world. It is easy to read, and provides food for thought for people who want to start their own business.Published on December 13, 2013 by Christos
One of the best books of its genre I have read as a venture capitalist. Unique descriptions of entrpreneurs and unique anecdotesPublished on December 9, 2013 by Robert E. Keith
Fantastic insight on entrepreneurship and how it can be difficult to quantify. Isenberg very effectively illustrates how to "break the rules."Published on October 23, 2013 by celyea


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No sympathySeptember 10,2013
No sympathy
I read the recent article in The Times Argus about the seizure of the dog. I am the owner of the elderly blind dog, that is actually not so elderly.
Zoe, my German Shepherd/Husky mix is two and a half years old. Brandy Todd had been warned two previous times, verbally, about the issue with her dog slipping out of its collar. My grandmother told Brandy to put a harness on it so she would have more control. Brandy did not listen.
The dog, Kodiak, on the third time, charged at Zoe while my mother was outside with her and attacked her. Zoe was on a leash all three times of the attacks, and on the third and final attack, my grandmother told Brandy she had given her too many chances and was done with the dog.
We are not the only ones to file a complaint, Brandy had many complaints about the dog which she failed to do anything about. So its no wonder that the town doesnt feel sorry for her, when she failed to do anything about the control of her own animal, if she truly cared about keeping her dog.
With three written complaints and numerous voiced complaints, isnt that a sign she wasnt doing much about her dogs control?
Chelsea C. Copeland
BarreMORE IN LettersThe recent birth of our second daughter makes me think about the world I want my girls to grow up... Full StoryYesterday I upgraded my PC from Windows 7 Professional to Windows 10. Full StoryI believe that Matt Dunne has the energy, experience and creativity to lead Vermont, as our... Full Story
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Not a problem at all. Just curious. How do I change the forum that first appears when I sign in? At the moment, when I first sign in, I always get shown the Airlines forum. No problem with that. I know I picked that once long ago.
But for the life of me, I simply cannot find where to change that to, say, the Europe forum, which I'd now prefer. I can't find it on my personal profile or on my personal account settings, and if it's somewhere else, I've simply missed it!
Where do I do that?
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How do I change the default forum that pops up when I sign in?
Not a problem at all. Just curious. How do I change the forum that first appears when I sign in? At the moment, when I first sign in, I always get shown the Airlines forum. No problem with that. I know I picked that once long ago.
Report Abuse
Hello, tom, look at the top of this screen and you will see "Change Forum", it is just to the left of the "Search the Forums" box. Click on the "Change Forum" and you will have access to all of the various forums that Fodor's offers.
Report Abuse
That's not what I asked. I know how to switch forums in general. I'm asking how do I change the forum that AUTOMATICALLY GETS SHOWN THE INSTANT I LOG ON AT ALL. I'm not sure that just hopping to a different forum the way you suggest will change the default forum I automatically see when I first sign in, which is what I'm trying to do.
Report Abuse
I understand your question. When I click my Fodors bookmark it tales me straight to the Europe board (not the Fodors or Forums home pages) . . . But I don't remember how I set that
Hopefully they get you an answer.
Report Abuse
Oh --and I almost never log out--so maybe that has something to do w/ it??
Report Abuse
janisj said "Hopefully they get you an answer."
they haven't yet, janisj...
Report Abuse
Hi again tom,
This is a curious thread because I've not encountered the problem you describe.
I used to set Firefox to not clear out cache/history when the browser program quit, so like janisj, I was pretty much always logged in.
With Firefox preferences changed, I call up usually my profile page, or else the europe board and I hit the little login whenever I am ready to sign in and make a comment.
With whatever Fodors page I am on, doing the login does not change the page for me, just logs me in.
Surely not fun that you are still waiting for a response from someone on the Fodors team.
If you have time to explore with someone else, what URL do you visit to sign in?
Report Abuse
I just bookmark the forum I want to land on first and that's where I go. But I never have signed out ,
Sign in to comment.


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Thank you and God bless.
Yes, thank you very much for your response. It helped me understand that spirituality is something that is already in me but that I just need to strengthen. Now I have another question, is there a specific spiritual practice that you can recommend?
Hello, I really appreciate the message in this video. I have a question though, how can one achieve a spiritual state of consciousness like the one Mike talks about?


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I would like to thank Ernesto Calvo, Gretchen G. Casper, Barbara Geddes, Jonathan Hartlyn, Marcus Andre Melo, Leiv Marsteintredet, Covadonga Meseguer, Marcus Andre Melo, Nina Wiesehomeier, and the anonymous reviewers and editors of Law & Society Review for their constructive and helpful comments to previous versions of this article. Please direct all correspondence to Gabriel L. Negretto, CIDE, Division de Estudios Pliticos, Carretera, Mexico-Toluca 3655 Lomas de Santa Fe, 01210, Mexico D.F.; e-mail: firstname.lastname@example.com.
Replacing and Amending Constitutions: The Logic of Constitutional Change in Latin America
Version of Record online: 12 DEC 2012
DOI: 10.1111/j.1540-5893.2012.00516.x
© 2012 Law and Society Association
Law & Society Review
Volume 46, Issue 4, pages 749–779, December 2012
Additional Information
How to Cite
Negretto, G. L. (2012), Replacing and Amending Constitutions: The Logic of Constitutional Change in Latin America. Law & Society Review, 46: 749–779. doi: 10.1111/j.1540-5893.2012.00516.x
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- Issue online: 12 DEC 2012
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Castaways: The Curse of the Jolly Stone Trilogy, Book IIIby Iain Lawrence
View All Available Formats & Editions
ADRIFT AT SEA, Tom Tin and his four convict companions are only too glad when they come upon a deserted ship. The boys clamber aboard, not knowing whether they've been saved or set on a course toward doom. But after rescuing two men stranded on a melting iceberg, Tom begins to suspect that these unsavory sailors are dangerous castaways from this very vessel. The more Tom questions the men, the more they dislike him. So, when Tom overhears them plotting to get rid of him, he knows they mean it. But the other boys don't feel threatened - at least not until the sailors attempt to sell them as slaves, a decision that ends with death for some . . . and with Tom sailing the ship home to England.
Soon Tom discovers that he has to cast away every ill-intentioned companion from his voyage home before he can truly be free.
From the Hardcover edition.
Editorial Reviews
Gr 5-9 Tom Tin's life has taken a turn for the worse ever since he took possession of the Jolly Stone, a sought-after diamond as big as a doorknob. A wealthy merchant, Mr. Goodfellow, has sentenced Tom's father to debtors' prison and Tom to an island in the South Seas on a convict ship. When Tom and four fellow castaways escape from the cannibal-infested islands on a broken-down boat, their provisions and fuel run out, forcing them to draw threads to see who will die so that the rest can live. Just before the axe is wielded, they run across two stranded sailors who use force to take over Tom's ship and lead the castaways into the hands of slave traders. Thanks to Tom's seafaring upbringing and loads of luck, the boys survive one frightening episode after another, eventually bringing Tom back to London where he can retrieve the Jolly Stone and seek revenge on Mr. Goodfellow. A treasure chest packed with seaworthy adventures, including dangerous encounters with slave traders, cannibals, pirates and the notorious Flying Dutchman, The Castaways leaves readers breathless with its twists and turns. Just when readers might think Tom is out of trouble, he comes face to face with another challenge, developing his character from a fearful boy set on revenge to a mature young man who discovers that you cannot put a price on happiness.-Kimberly Monaghan, formerly at Vernon Area Public Library, IL
Product Details
- 9780375890642
- Publisher:
- Random House Children's Books
- Publication date:
- 11/13/2007
- Series:
- Curse of the Jolly Stone Trilogy , #3
- Sold by:
- Random House
- Format:
- NOOK Book
- Pages:
- 256
- File size:
- Age Range:
- 12 Years
Read an Excerpt
We steamed along below the stars, half a thousand miles from land. All I could see were the dim shapes of the boys, and the hulk of the engine in the middle of the boat. But up from the bow flew splashes of green, like emeralds sliced from the black sea. In our wake they lay scattered, swirled by the churning of our paddle wheel.
All night I listened to the chant of the steam engine, the chuckatee-chickadee, chuckatee-chickadee that shook every plank and every nail. When the sun came up behind us, our smoke hung over the sea like a greasy pennant streaming from the funnel, a tattered flag that could be seen for many miles. So Gaskin Boggis pulled the fire from its box, dousing each stick over the side with a hissing gout of steam.
Through eleven nights we'd bored through the blackness; through eleven days we'd drifted on a blazing sea. On this morning, our twelfth since we'd last seen land, it was Walter Weedle's turn to stand watch, to keep a lookout for the black sails of the Borneo pirates. As usual, he went grumbling to his place atop the dwindling pile of firewood.
"There's some what never take a turn," he said, with a dark look in my direction. "Should be turn and turnabout, that's what I say."
Only Midgely bothered to argue. "No one minds what you say, Walter Weedle. You can hop it, you can."
Weedle's clumsy feet knocked the logs askew. "There ain't no pirates. We ain't seen a pirate yet. Don't know why we have to stop at dawn."
"'Cause you're a half-wit," cried Midgely. In his blindness he was squinting toward the engine, mistaking its shape for Weedle. "Try steering by the sun, and you'll go in circles, you stupid. But the stars is like a compass, and that Southern Cross is the needle. Ain't that so, Tom?"
"Yes," I said.
"It's going to lead us home. Ain't it, Tom?"
"Of course," I said, as though I actually believed him. Midge thought the Southern Cross hung in the sky like a painted sign. He didn't know how strange and pale a thing it was, so hard to find that I wasn't certain I had ever really seen it. I feared we were already lost.
"Tell him about them other islands, Tom," said Midgely. "Tell him how the Cross will take us there." He rattled off their names again, the Cocos, the Chagos, the Mascarenes. "We can't miss 'em, can we? We'll hop from one to the other like on skipping stones."
He was smiling now, proud as Punch of this notion of his. He had made it sound so simple that we'd all believed it was possible. We had tackled the oceans as only boys might dare to do, chasing the Southern Cross toward islands rich with food and firewood. But now, if we didn't find land within the week, we would have no water left to drink, no food to eat, no wood to burn.
The sea was too huge, the sun too hot. I felt like a candle melting away. Weedle and Boggis and Benjamin Penny were as brown as old figs, while poor Midgely--red and peeling--looked like a lobster boiled in his skin.
He was taking shelter now as the sun climbed over the bow. He tucked himself into the shade of a sea turtle's shell, the last remains of a beast we had slaughtered ten days before. It was nearly as long as Midge was tall, and the boy peered out from one end like the turtle itself.
His eyes were gray, almost covered by his drooping lids. It seemed at times he had no eyes, when all I could see were the darkened crescents below his lashes. But he still smiled in his cheerful fashion. "All's bob, Tom," he said. "We'll reach them islands tomorrow, I think."
I didn't understand how he could never lose hope. I felt like flinging myself down in the kicking tantrum of a child, screaming about the unfairness of it all. I was the owner of a fabulous jewel, of a wealth beyond imagining. I had only to get home to London to claim it. But the Fates, it seemed, would never allow me that.
As I settled down beside Midgely, my thoughts ran their endless circle, beginning--as always--with the notion that I was cursed by the Jolly Stone. I believed absolutely that it brought ruin to all who touched it, and I vowed that I would one day unearth the jewel from its London grave just to pass on the curse to Mr. Goodfellow. I imagined with great pleasure how his greedy eyes would glow when I put the stone into his butter-soft hands.
Then, as always, doubts leapt in to chase this thought. How could a simple stone, a thing of the earth, carry such unearthly power? Wasn't Mr. Goodfellow really to blame? It was he who had sent my father to debtors' prison, and me to the South Seas in the hold of a convict ship. Give the diamond to him? Hardly! I would keep the stone for myself, and use its wealth to crush the man like a cockroach.
But what if the Stone were cursed, I wondered; and round I went again.
I could sometimes spend hours thinking in circles. But today I had only begun when the boat suddenly rocked, and my head banged against its ribs. Benjamin Penny shouted, "Watch where you're going, you great oaf!" Gaskin Boggis was moving to his place beside the engine. That was where he always slept, nestled with the machinery. To him it must have been like a favorite old dog, a friend to be fed and watered by night, to be petted through the day.
I tried to find a bit of shade behind Midgely's turtle shell. But with each roll of the boat, sunlight flashed across my face.
I lay on planks that were, at most, an inch in thickness. On their other side was water so deep that it made me dizzy to think of it. What manner of things lurked down there?
With the engine silenced, I could hear the slop of water beneath the boat. My horrors paraded in my mind: man-eating fishes; serpents and leviathans; storm and tempest; and every man who'd ever drowned. Of them all, this last fear was my greatest. The splash against the planks became the thrashing of lost sailors swimming up behind us. Every scratch and tap of wood was the sound of their fingers feeling at the boat, and I dared not lift my head lest I see them reaching for the gunwale.
From the Hardcover edition.
Meet the Author
Iain Lawrence is the author of numerous acclaimed novels, including The Cannibals, The Convicts, Gemini Summer, B for Buster, The Lightkeeper's Daughter, Lord of the Nutcracker Men, Ghost Boy, and the High Seas Trilogy: The Wreckers, The Smugglers, and The Buccaneers. He lives on Gabriola Island, B. C.
From the Hardcover edition.
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THE CASTAWAYS is the third book of the trilogy including THE CONVICTS and THE CANNIBALS, and starts off with Tom Tin and his companions adrift at sea. They have escaped the punishment of being sent to Australia as convicts only to find themselves aboard a steamship that is running dangerously low on fuel and with no idea of where they are. They find a ship that is apparently deserted. Fearing that it may be the ghost ship Flying Dutchman, they clamber aboard anyway, perhaps on a course toward certain doom.
Then they locate two men stranded on an iceberg, and take them on board, but when Tom hears them plotting to get rid of him, he is just sure that they are castaways from the very ship they are on, and probably have killed all of the previous crew members.
In a riotous episode, the castaways take Tom and his companions prisoner and prepare to sell them as slaves. Tom and the kids manage to escape that fate and sail to England, where they meet with more adversity and imprisonment.
My only complaint with THE CASTAWAYS is that there are a number of references to episodes that happened in the previous two books, and if you haven't read them, you must use your imagination to get you up to speed on the story line.
A rollicking, fast-moving adventure that melds neatly with the facts of early shipping, pirates, the slave trade, and transporting convicts to Australia. There are characters you will love and a story that keeps you turning the pages to see what happens next, complete with a very satisfying, surprise ending.


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Originally posted on Fox Sports Wisconsin | Last updated 3/6/12
SCOTTSDALE, Ariz. (AP) -- Matt Cain pitched two scoreless innnings in his spring debut for San Francisco before the Milwaukee Brewers rallied to beat the Giants 7-3 Monday night. Travis Ishikawa and Zelous Wheeler homered and Chris Narveson threw two scoreless innings for the Brewers, who trailed 3-0 after five innings. Aubrey Huff homered and Gregor Blanco stole two bases and scored twice for the Giants. Pinch-hitter Wheeler hit a two run homer in the sixth as Milwaukee scored three unearned runs off Giants reliever Jeremy Affeldt to tie the score. In the seventh, late-game replacement Justin Christian mishandled Ishikawa's deep fly ball with two runners on and two outs, allowing the go-ahead runs to score. Ishikawa added a solo homer in the ninth.
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|Publication number
|Publication type
|Application number
|Publication date
|Feb 1, 1977
|Filing date
|Apr 11, 1975
|Priority date
|Apr 11, 1975
|Publication number
|Dick Merlin Olsen, Charles H. Armstrong, Gordon L. Brock
|Original Assignee
|Clayton Manufacturing Company
|Export Citation
|BiBTeX, EndNote, RefMan
|Patent Citations (4), Referenced by (34), Classifications (13)
|External Links: USPTO, USPTO Assignment, Espacenet
1. Field of the Invention
This invention relates to a system for analyzing internal combustion engines and more particularly to an electronic testing system for analyzing certain engine operating characteristics.
2. Description of the Prior Art
Various types of electronic analyzers have been proposed heretofore to indicate performance characteristics of internal combustion engines. Many of such systems display engine operating characteristics such as ignition voltages supplied to the igniters or spark plugs of the engine by means of cathode-ray tube oscilloscope. An oscilloscope display of ignition system characteristics such as ignition pulse waveforms provide a considerable amount of information concerning an engine's ignition system. However, such a display requires a highly skilled operator to analyze the information and determine engine defects. Furthermore, analyzers employing such display systems are relatively large because of the size of the cathode-ray tube and not too readily portable. The present invention overcomes certain of the shortcomings of such prior art analyzers.
The present invention provides an apparatus for analyzing the operation of a multiple cylinder internal combustion engine equipped, for example, with a source of d.c. voltage such as a battery, means for recharging the battery, such as an alternator, an igniter or spark plug for providing an electrical discharge in each cylinder, and an ignition system for supplying an ignition pulse to the igniters to cause the cylinders to fire in a given sequence. The ignition system further includes an energy storage element which may be in the form of an auto transformer type ignition coil with a primary winding connected between the battery and mechanical breaker points so that closure of the breaker points results in current flow through the primary winding of the ignition coil and the opening of the breaker points allows the energy stored in the ignition coil to discharge through the secondary winding and the spark plug connected thereto by means of a suitable distributor. The analyzer includes means responsive to the occurrence of each ignition pulse for producing a spark line gate signal during the time interval of the electrical discharge in each cylinder. Cylinder identification means which may be in the form of a ring counter is coupled to the ignition system and arranged to generate a separate cylinder identification signal which corresponds to the time interval of the compression stroke and ignition (electrical discharge) in each individual cylinder. Means are further provided responsive to the occurrence of the spark line gate signal and a selected cylinder identification signal; for example, the signal representing cylinder No. 2 for providing a numerical value of the voltage supplied to the respective igniter during a predetermined portion of the time interval of the electrical discharge in the selected cylinder.
The analyzer may further include means coupled to the engine ignition system and responsive to the closure of the breaker points for generating a points closed sample signal. Means are coupled to the breaker points and responsive to the points closed sample signal for providing a numerical measure of the average voltage drop across the points during a predetermined portion of the time interval that the points are closed.
The analyzer may further include means coupled to the alternator for providing a numerical measure of the amplitude of the a.c. ripple voltage in the output of the alternator. The analyzer may also include means coupled to the battery terminal for providing a numerical display of the voltage supplied to the engine's starter during the time the starter is turning the engine over without ignition for a check of the compression present in individual cylinders.
FIG. 1 is a block diagram of certain components of an electronic analyzer constructed in accordance with the present invention;
FIG. 2 is a block diagram of the remaining components of the engine analyzer of FIG. 1;
FIG. 3 is a plan view of a hand held housing unit for holding certain of the circuit components of FIG. 1;
FIG. 4 is a waveform timing diagram illustrating the signals present on various leads in the circuit of FIGs. 1 and 2;
FIG. 5 is an enlarged view of waveform A of FIG. 4; and
FIG. 6 is a waveform diagram illustrating (a) the output voltage of a normal and faulty alternator with engine running, and (b) the battery terminal voltage of an engine during the cranking test.
Referring now to FIG. 1, a conventional alternator 10 and a battery 12 are illustrated as a part of the engine undergoing a test by the apparatus of the present invention. The engine further includes an ignition system comprising breaker points 14 and a cam 16 for opening and closing the points in timed sequence with engine revolutions. A conventional ignition capacitor 18 is connected across the breaker points 14. An ignition coil 22 is illustrated with its primary winding 24 connected at one end to the battery terminal 12 by means of an ignition switch 20. The other end of the primary winding 24 is connected to the breaker points as illustrated. The ignition coil includes a secondary winding 26 connected to the rotating contact of a conventional distributor 28 for applying the ignition pulses to the igniters or spark plugs of the engine to cause the cylinders to fire in a given sequence.
The ignition coil 22 functions as an energy storage element by storing energy when the breaker points 14 are closed and provides a high voltage discharge to the appropriate spark plug when the points are opened.
The apparatus of the present invention is arranged to analyze certain characteristics of an internal combustion engine, e.g., (1) voltage drop across the points when closed for indicating the conditions of the points (pitted, etc.); (2) spark line voltage or voltage supplied by the distributor during discharge across the spark plug gap for indicating the resistance in the spark plug, and the spark plug wires; (3) alternator output voltage for indicating the condition of the alternator; and (4) battery terminal voltage during cranking to provide an indication of the compression present in the individual cylinders. While the measurement of only certain parameters is discussed in connection with the engine analyzer of FIGS. 1, 2, and 3, it should be noted that an engine analyzer would normally include additional circuitry for measuring other parameters such as distributor dwell, ignition timing, spark plug ionization voltage, etc. Measurement of such additional parameters is, for example, discussed in the U.S. Pat. No. 3,650,149.
The analyzer of the present invention includes a hand held housing unit 30 shown in FIG. 3 which is normally held by the operator while he sits in the automobile under test to control the throttle. The hand held unit is connected to the main electronic chassis which houses most of the components (shown in FIGS. 1 and 2) by means of a suitable multiconductor cable 29.
A program switch 32 for permitting manual selection of the test to be performed is operated by means of a manual knob 34. The program switch 32 may be in the form of a multiple position rotary switch having one or more stationary contact discs carrying fixed contacts associated with each switch position and a rotatable shaft which carries a moveable contact for each stationary contact disc. A suitable type of multiple position rotary switch is illustrated in FIG. 5 of U.S. Pat. No. 3,789,658.
The program switch 32 is also provided with a drum 35 which rotates with the rotary contact and carries a legend thereon individually associated with each switch position. The legend associated with the position to which the switch has been rotated is visible through a window 36 in the housing 30.
The drum 35 also carries a number associated with each switch position which number is visible through a window 37 in the housing to inform the operator of the test being conducted. In the position shown in FIG. 3 the program switch is rotated to test position number 8 for measuring the spark line voltage. The numerical value of the parameter being measured is displayed by a digital voltmeter 38 through a window 39 in the housing 30.
The housing 30 also carries a cylinder select switch 40 to be described in more detail in reference to FIG. 1. The cylinder select switch 40 includes a hand operated knob 41 which permits the operator to measure parameters such as spark line voltage associated with each individual cylinder as will be explained in more detail. The cylinder select switch 40 may also include a drum 42 which is rotatable with a rotating contact thereof. The drum 42 carries indicia visible through a window 43 for indicating which cylinder has been selected. If desired, such indicia would be engraved on the knob 41.
A second digital voltmeter 44 is provided for indicating the revolutions per minute of the engine under test via a window 45. A manual switch 46 is also included for shorting out the points when manually depressed to permit the cranking voltage to be measured without engine ignition as will be described later.
Referring now to FIG. 1, the circuit for measuring the voltage drop across the ignition points while the points are closed includes a filter and delay circuit 50 connected to the undergrounded side of the points as illustrated. The circuit 50 filters the signal present across the points and delays the signal by an appropriate time period, for example, 5-10 microseconds (usec). The voltage across the points is illustrated by waveform A in FIG. 4. The output signal from the filter and delay circuit 50 is squared by a square wave generator 52 to provide the output signal illustrated by the waveform B in FIG. 4. The output signal from the square wave generator 52 triggers a one-shot multivibrator 54 to provide an output pulse as illustrated by the waveform C in FIG. 4 having a predetermined time duration, for example, 200 microseconds. The output pulse from the one-shot multivibrator 54 is applied to a control electrode 55 of a switch 56 which is illustrated as employing a field effect transistor (FET). The switch 56 is arranged to connect the source electrode 57 to the drain electrode 59 thereof for the duration of pulse C.
The voltage across the points is applied to an integrating circuit 60 when the switch 56 is closed, e.g., for the duration of pulse C. The integrating circuit 60 includes a series resistor 61 and a resistor 62 and a capacitor 63 connected in parallel to ground as illustrated to provide an input signal to an amplifier 64 which represents the integrated voltage across the points in the closed condition for the duration of the pulse C. The output signal from the amplifier 64 is applied as one input to the program switch 32.
When the program switch 32 is rotated to the appropriate position for measuring the points closed voltage drop, the output signal from the amplifier 64 is coupled to a digital voltmeter 38 which includes an analog to digital converter 66 and a digital display unit 68 as illustrated. Thus, a digital display of the voltage across the points in the closed condition is provided by the display unit 68. An excessive voltage drop across the points in their closed condition is an indication that the contacts are not making good contact due to pitting, improper point adjustment, etc.
Referring again to FIG. 1, the circuit for measuring the spark line voltage or the voltage required to sustain an arc across the spark plug gap includes an attenuator circuit 70 which has an input connected to the output terminal of the secondary ignition coil winding 26 by means of an appropriate probe including a capacitor 71. The output signal from the attenuator circuit 70 is amplified and inverted by a current amplifier 72 and applied to the source electrode 73 of an FET switch 74. The drain electrode 75 of the switch 74 is connected to a peak voltage measuring circuit 76. The program switch 32 connects the output signal from the circuit 76 to the input of the digital voltmeter 38 via lead 78 when the program switch 32 is rotated to the appropriate position, that is, the position for measuring the spark line voltage.
The peak voltage measuring circuit 76 includes a pair of operational amplifiers 80 and 82, a pair of feedback resistors 83 and 84, a pair of diodes 85 and 86 and an integrating circuit including resistors 87 and 88 and a capacitor 89 connected as shown. The circuit 76 provides an output signal having an amplitude which represents the peak value of the input voltage.
The switch 74 includes a control electrode 90 and is arranged to connect the source and drain electrodes thereof when a high level signal is applied to the control electrode. A high level signal is applied to the control electrode of switch 74 for a predetermined period of time during the time that an arc is sustained across the spark plug gap, for example, on the order of 300 microseconds. The circuit for generating this control signal will now be described.
The output signal from the current amplifier 72 actuates a level trigger 92 when the output voltage from the secondary coil 26 has exceeded a predetermined value, for example, 4 kilovolts. The level trigger 92, when actuated, provides an output signal which is applied to a one-shot multivibrator 94. The output signal from the one-shot multivibrator 94 triggers a ramp generator 96 which provides a sawtooth output signal of constant maximum amplitude illustrated by the waveform E in FIG. 4. The sawtooth output signal from the ramp generator 96 actuates a level trigger circuit 98 when the amplitude of the ramp reaches a predetermined level. Since the ramp generator 96 is synchronized with the engine and provides a constant maximum amplitude, a given amplitude corresponds to a predetermined number of degrees of engine rotation preceding the next ignition pulse. Thus, the level trigger 98 generates a signal which anticipates the cylinder fire by a predetermined number of degrees of engine rotation.
The ramp generator 96 and level trigger 98 may be of the type described in U.S. Pat. No. 3,650,149 as the servo sweep generator 37 and level trigger 71 in FIG. 1 B.
The output signal from the level trigger 98 triggers a one-shot multivibrator 100 which provides an output pulse represented by waveform F in FIG. 4. This output signal from the one-shot multivibrator 100 is applied as an input signal to a cylinder identification means in the form of a ring counter 102 of the type described in detail in U.S. Pat. No. 3,650,149. Each input pulse to the ring counter 102 shifts the counter and steps the output signal thereof from one of it stages, 104a, 104b, 104c, 104d, 104e or 104f to the following stage. The output signals from the ring counter 102 correspond with the firing times of individual cylinders with the signal in the output circuit 104 braketing the firing time of cylinder No. 1, etc. The counter 102 provides the output signals G, H, I and J illustrated in FIG. 4 in output stages 104a, 104b, 104c and 104d to correspond with the firing times of cylinders in firing order of No. 1, No. 2, No. 3 and No. 4, respectively. The output signals in the last two output stages, 104e and 104f, are not shown in FIG. 4 but are identical in form to the output signals G, H, etc., and displaced in time to correspond to the firing times of cylinders No. 5 and No. 6.
The ring counter 102 is illustrated as having six output stages. It should be noted, however, that the number of output stages of the ring counter 102 must correspond to the number of cylinders of the engine under test, for example, 4, 6, 8, etc. The output stages of the ring counter 102 are connected to fixed contacts numbered 1-8 of the cylinder select switch 40. The rotating contact 106 of the cylinder select switch is connected to a selected fixed contact e.g. off, 1, 2, 3, etc., by rotating the knob 41. The rotating contact of the switch 40 is connected to the control electrode 90 of the switch 74 by means of an AND gate 110.
The AND gate 110 includes a second input which receives a pulse delayed in time (i.e. 100us) from the points opening phenomena to insure that the voltage applied to the spark plugs or ignitors has stabilized. This delay is provided by a delay and one-shot multivibrator circuit 112. The output signal from the circuit 112 is applied to the second input of the AND gate 110 via a one-shot multivibrator 114. The output signal from the one-shot multivibrator 114 is illustrated as waveform D in FIG. 4. This output signal represented by waveform D is delayed from the points opening by suitable time, i.e. 100 us, and has a predetermined time duration i.e. 300 us to permit the spark line voltage (voltage applied by the secondary coil to the spark plugs) to be sampled during a predetermined time interval as will be explained in more detail.
The output of the AND gate 110 is at a high level only when both input signals are at high levels. Thus, when the switch 40 is in the position shown; the AND gate 110 provides a high level signal to the control electrode of the switch 74 to cause the switch to provide a closed circuit between the source and drain electrodes ony upon the simultaneous occurrence of (a) the spark line gate signal D (FIG. 4) from the one-shot multivibrator 114 and (b) an output signal in the first output gate of the ring counter 102 corresponding to the firing time of cylinder No. 1. When the switch 40 is turned to the off position to thereby connect a positive 15 volt source to the AND gate 110 the switch 74 is enabled during each spark line gate signal from the one-shot multivibrator 114. When the switch 40 is turned to position No. 9, ground is connected to one input of the AND gate 110 to thereby provide a low level output voltage from the gate 110 which maintains the switch 74 in its open state.
Referring now to FIG. 6, an expanded view of the ignition signal A (FIG. 4) is illustrated. The ignition signal applied to the spark plugs includes a high voltage spike, for example, of the order of 10 kilovolts which is required to ionize the gas in the cylinder. Once the gas is ionized the electrical discharge or arc is sustained for a portion of the time that the points are open as illustrated. The spark line gate signal which enabled the switch 74, FIG. 1, is delayed from the initiation of the ignition pulse (points opening) by a suitable amount, for example, 100 usec to insure that the electrical discharge has occurred. The spark line gate signal, as discussed previously, has a predetermined time duration of the order of 300 usec indicated by the letter X in FIG. 6. Thus, when the switch 74 is closed the spark line voltage is applied to the input of the peak voltage measuring circuit 76. The output signal from the circuit 76 is applied through the program switch 32 to the digital voltmeter 38. The digital voltmeter thus provides a numerical value of the peak voltage applied by the secondary ignition coil to the selected spark plug during a selected portion of the electrical discharge. The spark line voltage is normally in the range of 1.5 to 2.5 kilovolts with the voltages supplied to the individual plugs falling within a 500 volt range. An excessive spark line voltage indicates that the spark plug wires and/or spark plugs have an abnormally high series resistance or that the spark plugs are improperly gapped.
Referring now to FIG. 2, the compression of the individual cylinders may be measured by cranking the engine, that is, turning the engine over with the starter while preventing ignition. The cranking voltage fluctuations are measured by means of an FET switch 120, an a.c. to d.c. converter 122, an integrating capacitor 124 and a coupling capacitor 126. As is illustrated, the source electrode of the switch 120 is connected to the battery terminal by means of a suitable probe including the coupling capacitor 126. The switch 120 includes a control electrode 119 which is connected either to a selected output stage of the ring counter 102 or to the positive 15 volt source by means of the cylinder select switch 40. When the switch 40 is in the position shown a high level signal is applied to the control electrode 119 of the switch 120 each time the output stage of the ring counter 102 corresponding to the selected cylinder (e.g. No. 1) provides an output signal. When the cylinder select switch is rotated to position number 1 as shown, the output signal G (FIG. 4) is applied to the control electrode 119 so that the a.c. component of the battery terminal voltage present during the compression stroke of cylinder number 1 is applied by the switch 120 through the a.c. to d.c. converter to the integrating capacitor 124. The integrated voltage present on capacitor 124 is applied by the program switch 32 to the digital voltmeter 38. The voltmeter 38 provides a numerical value of the change in battery terminal voltage during the compression stroke of the selected cylinder.
Referring now to FIG. 5, the waveform L represents the a.c. component of the battery terminal voltage of the engine under test during cranking (without ignition) in which one cylinder has an abnormally low compression. The voltage change at the battery terminal due to current drain by the starter during the compression stroke of the cylinder with low compression is illustrated at 130 on waveform L. The voltage change at the battery terminal during the compression stroke of the next cylinder is represented at 132 on waveform L. As is apparent from waveform L the battery terminal voltage change is (1) small during the compression stroke of a cylinder with low compression and (2) large during the compression stroke of the succeeding cylinder. This large current drain represented by the curve 132 results from the fact that the low compression cylinder provides less torque to aid the starter in turning the engine over during the compression stroke of the succeeding cylinder than a cylinder having normal compression.
An average value of the changes in battery terminal voltage during the compression strokes of all of the cylinders may be obtained by turning the cylinder select switch to the OFF position to connect the 15 volt source to the control electrode 119 to thereby maintain the FET switch 120 closed. The average value may be read on the digital voltmeter 38. The digital values of the battery terminal voltage changes for each cylinder's compression stroke which may be compared with the average value to determine which cylinders, if any, have abnormally low compression.
The circuit for measuring the alternator ripple voltage as shown in FIg. 2 includes the coupling capacitor 134, an amplifier 136 and an a.c. to d.c. converter 138. The alternator terminal voltages of a normal and faulty alternator illustrated by the waveform K1 and K2, respectively, in FIG. 5. An alternator functioning satisfactorily will provide a ripple voltage which appears as a full wave rectified sinusoidal wave. The waveform K2 in FIG. 5 illustrates the output voltage of an alternator with an open diode. The alternator ripple voltage is converted to a digital value via the program switch 32 (when rotated to the proper test position) and the digital voltmeter 38. The value of the ripple voltage is indicative of the satisfactory or unsatisfactory performance of the engine's alternator. An alternator ripple voltage which is very small or zero is indicative of the fact that the alternator is not producing any field either due to faulty slip rings or an open field winding. A high reading of the alternator ripple voltage indicates that one or more of the diodes is shorted or that one or more diodes is open circuited or a combination of such factors.
Referring again to FIG. 2, there is illustrated a circuit for providing a digital reading of engine rpm. The circuit includes a level trigger 92 having its input connected to the output of the amplifier 72 to receive as an input signal the attenuated ignition pulses applied to the spark plugs. The level trigger circuit 92 is arranged to provide a trigger pulse when the secondary voltage supplied to the spark plugs reaches a predetermined level, for example, 4 kilovolts. The level trigger circuit 92 is thus actuated by each ignition pulse. The output signal from the level trigger circuit 92 is applied to a one-shot multivibrator 142 and a 4, 6 or 8 cylinder selection gate 144. The gate 144 provides an output pulse to an additional input of the one-shot multivibrator 142 which varies the on time of the multivibrator 142. When the gate 144 is manually set to represent a 4, 6 or 8 cylinder engine, the multivibrator 142 produces an output pulse of 1 millisecond, 1 1/3 milliseconds and 2 milliseconds, respectively. The output pulses from the circuit 142 are integrated by means of integrator 146 and amplified by an amplifier 148. The integrated analog voltage output from the amplifier 148 representing engine rpm is applied to the second digital voltmeter 44. The reading provided by digital voltmeter 44 is a measure of the number of ignition pulses occurring during any given increment of time and this provides a measure of engine rpm.
There has been described an engine analyzer for providing digital readings of (a) the spark line voltage associated with each cylinder, (b) points closed voltage drop, (c) battery terminal voltage changes associated with each cylinder's compression stroke (without ignition) and (d) alternator ripple voltage. The analyzer may be used by relatively unskilled personnel since only digital readings need be compared and/or recorded. Various routine modifications of the described embodiment may be made without departing from the scope and spirit of the invention as set forth in the following claims.
|Cited Patent
|Filing date
|Publication date
|Jun 6, 1968
|Dec 29, 1970
|Test apparatus for analyzing the performance characteristics of internal combustion engine ignition systems
|Jan 6, 1967
|Mar 23, 1971
|Marquette Corp
|Analyzer for multi-cylinder internal combustion engine having means for identifying individual cylinders
|May 15, 1970
|May 23, 1972
|Autoscan Inc
|System for determining the ignition advance in the distribution of an engine
|Jun 24, 1971
|Jan 29, 1974
|Sun Electric Corp
|Select signal engine diagnosing apparatus
|Citing Patent
|Filing date
|Publication date
|Mar 25, 1977
|Jul 18, 1978
|Owatonna Tool Company
|Instrument for testing a breakerless ignition system
|Jan 28, 1977
|Aug 22, 1978
|Sun Electric Corporation
|Vehicle diagnosis data entry system
|Jul 6, 1978
|Oct 9, 1979
|Przemyslowy Instytut Automatyki i Pomiarow "MERA-PIAP
|Diagnostic equipment for the internal combustion, carburetor type engines
|Dec 20, 1979
|Sep 22, 1981
|United Technologies Corporation
|Spark plug load testing for an internal combustion engine
|Oct 31, 1980
|Jul 19, 1983
|Fmc Corporation
|Engine generated waveform analyzer
|Dec 4, 1981
|Sep 18, 1984
|Bear Automotive Service Equipment Company
|Engine timing apparatus for use in testing
|Dec 4, 1981
|Oct 9, 1984
|Bear Automotive Service Equipment Company
|Engine analyzer with digital waveform display
|Mar 9, 1983
|Oct 15, 1985
|Daimler-Benz Aktiengesellschaft
|Equipment for recognizing misfiring
|Aug 23, 1985
|Jan 24, 1989
|Snap-On Tools Corporation
|Digital engine analyzer
|Nov 2, 1987
|Apr 25, 1989
|General Motors Corporation
|Spark plug testing under dynamic load
|Sep 16, 1991
|Mar 16, 1993
|Hannah Kenneth H
|Spark ignition analyzer
|Jun 26, 1991
|Apr 20, 1993
|Allied Signal Inc.
|Preignition warning device
|Feb 28, 1992
|May 4, 1993
|Coltec Industries Inc.
|Ignition performance monitor and monitoring method for capacitive discharge ignition systems
|Sep 24, 1990
|Oct 5, 1993
|Snap-On Tools Corporation
|Waveform peak capture circuit for digital engine analyzer
|Apr 9, 1992
|Mar 15, 1994
|Ngk Spark Plug Co., Ltd.
|Device for detecting misfire of an internal combustion engine by comparing voltage waveforms associated with ignition system
|Jan 26, 1995
|May 7, 1996
|Chrysler Corporation
|Ignition energy and breakdown voltage circuit and method
|Jun 1, 1995
|Jun 4, 1996
|Unison Industries Limited Partnership
|Diagnostic device for gas turbine ignition system
|Feb 24, 1995
|Oct 1, 1996
|Unison Industries
|Ignition System for a turbine engine
|Jul 7, 1994
|Oct 7, 1997
|Unison Industries Limited Partnership
|Diagnostic device for gas turbine ignition system
|Oct 2, 1996
|Feb 3, 1998
|Nichols; Steven J.
|Portable apparatus for testing an internal combustion engine
|Jun 7, 1995
|May 12, 1998
|Remotely programmable matrices with memories
|Oct 3, 1995
|Feb 23, 1999
|Remotely programmable matrices with memories
|Sep 6, 1996
|Jan 25, 2000
|Matrices with memories and uses thereof
|Aug 11, 1997
|Dec 11, 2001
|Discovery Partners International
|Automated sorting system for matrices with memory
|Jun 7, 1995
|Dec 18, 2001
|Discovery Partners International
|Remotely programmable matrices with memories
|Jun 7, 1995
|Jul 9, 2002
|Discovery Partners International, Inc.
|Remotely programmable matrices with memories
|Aug 10, 2004
|May 15, 2007
|Spx Corporation
|Handheld tester for starting/charging systems
|Mar 19, 2007
|Mar 20, 2012
|Vinko Kunc
|Method for regulating supply voltage
|Aug 10, 2004
|Feb 10, 2005
|Roberts Robert A.
|Handheld tester for starting/charging systems
|Dec 16, 2005
|Jun 21, 2007
|Trevor Scott Bryant
|Wireless Spark Energy Indicator
|Mar 19, 2008
|Apr 15, 2010
|Vinko Kunc
|Method for regulating supply voltage
|Dec 3, 1982
|Jun 15, 1983
|Bear Automotive Service Equipment Company
|Ignition coil test apparatus
|Nov 8, 1982
|Jun 9, 1983
|Bear Automotive Service Equip
|Engine analyzer with digital waveform display
|Nov 8, 1982
|Jun 9, 1983
|Bear Automative Service Equipm
|Ignition coil test apparatus
|U.S. Classification
|324/384, 324/399, 324/385
|International Classification
|Cooperative Classification
|European Classification


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Providence is not the best place to start a business. In fact, it's the second-worst large city in the nation to start one, ahead of only Ontario, Calif., according to the latest study by personal finance website Wallethub. more
By Lori Stabile
Applied Radar Inc. recently received a $1.4 million two-year Small Business Innovation Research contract from the U.S. Department of Defense. more
By PBN Staff
Utilidata Inc. has joined the U.S. Department of Energy's EV Everywhere Workplace Charging Challenge. more
By PBN Staff
The U.S. Small Business Administration on Tuesday announced the winners of its second annual Growth Accelerator Fund Competition. Providence-based Social Enterprise Greenhouse is one of 80 winners. more
By Eli Sherman
High winds and expensive electricity make Block Island a good site for the first U.S. offshore wind farm. For the same reasons, Long Island may be next. more
By Ehren Goossens
The Retail Project RI LLC, a project launched through the Innovation Fellowship program at the Rhode Island Foundation, has launched its fourth retail brand, Fetcher Bay, and its fourth retail brand, Fetcher Bay, and its online store FetcherBay.com, to provide dog owners with canine camping gear. more
By Patricia Daddona
Seven finalists have been selected in the 2016 Rhode Island Business Plan Competition, and their proposed businesses address problems in biotechnology, consumer, health care, information technology and the manufacturing industries. more
By PBN Staff
Forty aspiring student entrepreneurs from 11 of the state's colleges and universities are riding on the Founders League Startup Bus Friday afternoon to witness entrepreneurial activity in action at local businesses. more
By PBN Staff