US PATENT SUBCLASS 335 / 291
.~.~.~ Lifting or attracting type (e.g., for lifting pigiron or pulling hairpins)

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.~.~.~ Lifting or attracting type (e.g., for lifting pigiron or pulling hairpins) {3}
292  DF  .~.~.~.~> Hermetically sealed or moisture-proofed
293  DF  .~.~.~.~> Hand-held type
294  DF  .~.~.~.~> With outer casing or housing

DEFINITION

Classification: 335/291

(under subclass 289) Subject matter including electromagnets which are utilized for lifting articles such as pig-iron or for pulling articles such as hair pins from the hair.

SEE OR SEARCH THIS CLASS, SUBCLASS:

290, for lifting type electromagnets with control means.

SEE OR SEARCH CLASS

175, Boring or Penetrating the Earth,

328, for drilling bit or bit element which is magnetized or with magnet element.

209, Classifying, Separating, and Assorting Solids,

38, 40 and 212 through 232 for magnetic assorting of solid materials.

414, Material or Article Handling,

606, for an elevator or hoist and loading or unloading means therefor and wherein a magnet (e.g., an electromagnet) lifts an object of magnetically-attractive material for seizure by a grapple; and subclass 737 for a vertically swinging load support provided with a load-grasping member which may be in the nature of a magnet (e.g., an electromagnet).

600, Surgery,

9+, for magnetic energy applied to the body for therapeutic purposes, especially subclass 11 for probes for removing magnetic particles from the body.