US PATENT SUBCLASS 335 / 285
.~ Work or object holding type

Current as of: June, 1999
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335 /   HD   ELECTRICITY: MAGNETICALLY OPERATED SWITCHES, MAGNETS, AND ELECTROMAGNETS

209  DF  MAGNETS AND ELECTROMAGNETS {10}
285.~ Work or object holding type {4}
286  DF  .~.~> With workpiece to magnet adapted or fixture (e.g., to bridge flux) {1}
288  DF  .~.~> Rotary-type magnetic chuck (permanent or electromagnet type)
289  DF  .~.~> Electromagnet type (e.g., electromagnetic chuck) {2}
295  DF  .~.~> With magnetic-hold control means (e.g., means to control the hold strength)

DEFINITION

Classification: 335/285

(under subclass 209) Subject matter including magnetic means for holding a device, which is separate from the magnetic means, in a desired position.

(1) Note. This subclass includes holding type magnets with means to remove the object from the magnet, such as a lever element to lift the object away from the holding magnet.

SEE OR SEARCH CLASS

134, Cleaning and Liquid Contact With Solids, appropriate subclasses, especially

57, and 58 for cleaning devices that utilize magnets and electromagnets.

248, Supports,

206, for specially mounted brackets utilizing magnets. 269, Work Holders, appropriate subclasses, particularly

8, for magnetic work holders. Class 269 is the residual locus for patents to a device for clamping, support and/or holding an article in position to be operated on or treated.

279, Chucks or Sockets, appropriate subclasses for chucks or sockets actuated by electromagnetic means.

294, Handling: Hand and Hoist-Line Implements,

65.5, and 88 for magnetic material handing devices.

439, Electrical Connectors,

12, for electrical connectors with magnet or suction cup.

451, Abrading,

246+, for a magnetic rotary work holding device.