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Class 335/288 - Rotary-type magnetic chuck (permanent or electromagnet type)

Subclass of Class 335 - Electricity: magnetically operated switches, magnets, and electromagnets
Definition: Subject matter wherein the holding magnet is a magnetic
No. of patents: 47
Last issue date: 07/10/2012

NumberTitleIssue Date
8217743Magnetic locking system
Preferred embodiments of the present magnetic locking system can be used for releasably locking a first component to a second component. In one embodiment, the locking system includes a ferro-magnetic member associated with the first component, where the ferro-magne...
8183965Switchable core element-based permanent magnet apparatus
A method and device for a switchable core element-based permanent magnet apparatus, for holding and lifting a target, comprised of two or more carrier platters containing core elements. The core elements are magnetically matched soft steel pole conduits attached to ...
7396057Lifting magnet
A lifting magnet having a housing, a rotary magnet unit, and a stationary magnet unit. The lifting magnet also includes a pinion, a socket moving up and down, a slider rotating the pinion to set the magnetization and demagnetization states at top and bottom dead poi...
7354360Method and apparatus for teaching a user how to hit a ball with a bat
Disclosed is an apparatus for teaching a user how to hit a ball with a bat. The apparatus includes a telescopically adjustable tee assembly that is magnetically secured to an underlying base. A user can easily make adjustments to both the vertical height of the tee ...
7328630End effector inspection apparatus and method
A method for using an end effector for inspecting a structure is provided. An end effector includes a magnetically coupled attachment member for connecting the end effector to a control system bridge. An end effector also includes a telescoping arm at least partiall...
7224251Magnetic retaining device for machine tool
A magnetic retaining device for attaching a work piece to a machine tool includes a magnetic housing having two housing members secured together and having different magnetic poles, and a magnetic core rotatably received in the magnetic housing and having two core m...
7049919Magnetic adsorption device and production method thereof and magnetic apparatus
A magnetic adsorption device comprises: a magnetic circuit block having a cavity extending in one direction and divided into a plurality of magnetic pole members at intervals in the circumferential direction of the cavity by a plurality of spacers; and a permanent m...
7038566Magnetic pallet for anchorage of ferromagnetic parts for machining by machine tools with horizontal tool axis
A magnetic pallet (1) for anchorage of a ferromagnetic part to be taken for machining to a machine tool with horizontal tool axis, the magnetic pallet (1) including a base plate (3), a vertical parallelepiped shoulder (5) extending from t...
7012495Switchable permanent magnetic device
A switchable magnetic device includes a first magnet and a second magnet, both of which are essentially cylindrical. Magnets are housed in a housing made from pole pieces. Pole pieces are ferromagnetic. Lower magnet is fixedly mounted in the housing while upper magn...
7009480Semi-releasable magnetic tool
A semi-releasable magnetic tool is disclosed. The tool comprises two magnetizable pole plates. Each of said pole plates is bounded by peripheral edges. The pole plates are spaced apart and preferably disposed in substantial registry with one another. A generally non...
6975057Rotary electric machine having a stator made up of sectors assembled together
The invention relates to a rotary electric machine including a stator, powered by a polyphase current, having a magnetic circuit with teeth forming intervening slots for receiving electrical conductors. The magnetic circuit is made up of an assembly of sectors defin...
6963261Magnetic anchoring module with a system for enabling/disabling and adjusting the magnetic anchoring force and related assemblies
Magnetic module for the magnetic anchorage to a ferromagnetic surface of another magnetic, or ferromagnetic module, whose head includes: a first multipolar magnetic stator that in turn defines a multipolar magnetic anchoring surface, and a multipolar magnetic rotor ...
6949854Method and apparatus for a continuously variable-ratio transmission
A method and apparatus for providing a continuously variable transmission (CVT) is described. The CVT comprises permanent magnets to couple power, a coefficient of coupling controlled by an electronic servo control loop. Wherein torque multiplication is achieved by ...
6854777Magnetic lifting machine using neodymium magnets
A magnetic lifting machine according to the present invention is to prevent an antioxidant film on the surface of neodymium magnets from exfoliation, by having the neodymium magnets not be in direct contact with a pair of polarity plates of the machine but via anti-...
6707360Switchable permanent magnetic device
A switchable magnetic device includes a first magnet (10) and a second magnet (11), both of which are essentially cylindrical. Magnets (10,11) are housed in a housing made from pole pieces (12,13). Pole pieces (12, 13) are ferromag...
6663154Servocontrolled magnetic gripping device
A magnetic gripping device having a magnetic assembly in turn having an outer magnetic core, and an inner magnetic core mounted inside the outer magnetic core so as to rotate, about a given axis of rotation, between a first operating position, in which th...
6630878Magnetic rotating apparatus
A magnetic rotating apparatus is used for connecting a body portion and a rotating portion of a foldable product. The body portion has an assembling portion while the rotating portion has a pivot portion. The rotating portion is secured to the body portio...
6331810Magnetic lifting apparatus
A magnetic lifting apparatus by using neodymium magnets, incorporating a plurality of polarity plates (10) disposed with a predetermined interval and having non-magnetic medium (11) in the longitudinal center; a plurality of interval members (20) disposed...
6292078Manually controlled magnetic anchoring device
A manual magnetic anchoring device includes a monolithic ferromagnetic block, whereon a housing for stator magnets, a housing for a rotor core, a ferromagnetic crown for short circuiting of the magnetic flux during deactivation of the anchoring device, an...
6288684Antenna mounting apparatus
A mounting apparatus (100) suitable for retaining an antenna (112) includes a base (102) having magnetic sources (104) and (106) capable of providing varying magnetic forces. Magnet (104) retains the base against a metal surface (410), while an electronic...
6106682Thin-film processing electromagnet for low-skew magnetic orientation
An electromagnet having one or more coils wrapped around a plate-shaped core produces a uniaxial magnetic filed in the vicinity of a substrate surface for orienting a magnetic film deposited onto the substrate surface. Variations in the magnetic mass of t...
6076873Magnetic lifting apparatus
A magnetic lifting apparatus includes a plurality of magnetic substances, a plurality of rotor seat members, magnetic rotors, and permanent magnets alternately aligned with the plurality of magnetic substances. The apparatus includes stopping members for ...
5853521Multi-cathode electron beam plasma etcher
A multi-cathode electron beam plasma etcher is disclosed. The multi-cathode electron beam plasma etcher is comprised of: a vacuum chamber; several cathodes which are installed in the upper end of the upper part of the chamber and generates an electron bea...
5525950Magnetic base
A magnetic base including a rotary magnetic element, two symmetrical magnetic plate assemblies covered around the rotary magnetic element, and two non-magnetic blocks connected between the magnetic plate assemblies at different elevations; in which, each ...
5435613Magnetic lifting apparatus
A magnetic lifting apparatus includes a plurality of magnetic substances, a plurality of pairs of first permanent magnets, a plurality of rotors having a pair of second permanent magnets, respectively, and an on/off switch handle connected to the rotors w...
5382935Permanent-magnet grab
A magnetic grab has a pair of vertically elongated magnetic pole pieces each having an upper end and a lower end. The pole pieces diverge downward symmetrically with respect to a vertical symmetry plane with the upper ends substantially more closely space...
5266914Magnetic chuck assembly
A magnetic chuck assembly comprises top and bottom plates separated by a layer of non-magnetizable material, each plate having magnetizable sections separated by strips of non-magnetic material. A rotor mounted between the top and bottom plates carries a ...
5219050Eddy current braking apparatus
An eddy-current braking apparatus including a brake drum; an annular support disposed within the brake drum; a plurality of shafts mounted for rotation on the support and each disposed substantially parallel to the axis of the drum the shafts being spaced...
5166654Permanent-magnet grab
A magnetic grab has a pair of pole pieces each forming a downwardly directed pole and formed adjacent the respective poles with horizontally extending semicylindrical seats having approximately the same center of curvature and open concavely inward toward...
5044460Downhole seismic exploration device and apparatus
A downhole seismic exploration device comprises a seismic detector such as a geophone and a magnetic clamp, supported by O-rings in an open cradle carrier which can be secured to a cable linking several such devices into an array. The array is lowered int...
4974512Magnetic rotary locking and tensioning mechanism
A magnetic rotary locking mechanism for locking a plate or sheet-like member by placing it in tension which may be adapted to provide a self-tensioning locking device for securing a printing plate to a printing cylinder in a rotary printing press. The bas...
4953136Downhole seismic exploration device and apparatus
A downhole seismic exploration device comprises a seismic detector such as a geophone and a magnetic clamp, supported by Q-rings in an open cradle carrier which can be secured to a cable linking several such devices into an array. The array is lowered int...
4880949Switch drive for a rotary switch
A switch drive for a rotary switch includes a driven shaft at its input and a switch drive shaft at its output. The input shaft supports a lever for transmitting the movement of the input shaft to a pinion fixedly connected to the lever. The pinion rolls ...
4684911Wide angle control of permanent magnet rotors
Apparatus for holding a series of permanent magnet rotors having parallel transversely spaced coplanar rotational angles firmly at any of a wide range of desired angles without consumption of energy, the angles being linearly adjustable independently of r...
4664572Chip disposer
An improved chip disposer which removes chips or iron chips produced from a machine tool by using magnetic force is disclosed. The chip disposer includes an extension shaft which is detachably mounted to a main shaft of the machine tool, an outer tube whi...
4625928Method of magnetic cylinder assembly
A magnetic cylinder and plate for offset printing. The cylinder has annular magnets and pole pieces. The magnetic circuit is completed through a printing plate. The magnetic flux substantially saturates the pole pieces and plates. The area ratio of the po...
4575702Permanent magnetic chuck
A permanent magnetic chuck in which a workpiece holding plate comprises a plurality of permanent magnets each with a magnetic isolator which are alternatively laminated, said magnetic pole pieces and said magnetic isolator are respectively constructed as ...
4536732Magnetic coupling for parts of an optical instrument
A magnetic coupling comprises two parts of an optical instrument, for example, of a microscope, which are to be releasably coupled together. A locating surface is formed on one part, this surface comprising one or more areas defined by bodies composed of ...
4470032Magnetic chuck
A magnetic chuck for use in grinding optical lenses consisting of a means for increasing or decreasing the magnetic force exerted by a magnetic attachment surface contained in a housing sized for use in a lens grinding machine, wherein the means for incre...
Continuous demagnetizing for a dial feeder grinder. The grinder has a rotating table, and a plurality of grinding heads for successively grinding workpieces put on the table and carried therepast. The workpieces are held on the table by a magnetic chuck, ...
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