US PATENT SUBCLASS 335 / 294
.~.~.~.~ With outer casing or housing

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  DF  .~.~ Electromagnet type (e.g., electromagnetic chuck) {2}
291  DF  .~.~.~ Lifting or attracting type (e.g., for lifting pigiron or pulling hairpins) {3}
294.~.~.~.~ With outer casing or housing

DEFINITION

Classification: 335/294

(under subclass 291) Subject matter wherein the lifting or pulling electromagnet is enclosed in a special housing or casing.

(1) Note. This subclass includes lifting type magnets enclosed in sweeper type housing for rolling along the floor to pick up hairpins or other metallic particles.

SEE OR SEARCH THIS CLASS, SUBCLASS:

151+, for vacuum or hermetically sealed switches.

162, for plural independent switches with unitary housing, support or flux path.

202, for switches with significant housing or support means.

278, for casing or housing for electromagnet with armature. 292, for hermetically sealed lifting type electromagnet.

SEE OR SEARCH CLASS

174, Electricity: Conductors and Insulators,

17+, for boxes and housing with fluid or vacuum and subclasses 50+ for boxes and houses in general for electrical devices.

336, Inductor Devices,

90+, for inductor with outer casing or housing.