US PATENT SUBCLASS 335 / 289
.~.~ Electromagnet type (e.g., electromagnetic chuck)

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  DF  .~ Work or object holding type {4}
289.~.~ Electromagnet type (e.g., electromagnetic chuck) {2}
290  DF  .~.~.~> With circuit control means
291  DF  .~.~.~> Lifting or attracting type (e.g., for lifting pigiron or pulling hairpins) {3}

DEFINITION

Classification: 335/289

(under subclass 285) Subject matter wherein the holding magnet is an electromagnet.

(1) Note. This subclass includes electromagnetic chuck type magnets for holding workpiece in a desired position while

performing a work operation upon the workpiece such as, for example, grinding or cutting.

SEE OR SEARCH THIS CLASS, SUBCLASS:

286, for holding magnet with workpiece to magnet adapter using electromagnets.

288, for rotary type holding magnet using electromagnets.