US PATENT SUBCLASS 335 / 21
.~.~ With latch or trip means

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

2  DF  ELECTROMAGNETICALLY ACTUATED SWITCHES {30}
6  DF  .~ Automatic circuit-interrupting devices (e.g., circuit-protective devices) {12}
21.~.~ With latch or trip means {6}
22  DF  .~.~.~> Plural latch or combined latch operating means for single latch {1}
24  DF  .~.~.~> Trip-free (i.e., cannot be manually reclosed while overload exists) {1}
26  DF  .~.~.~> Reclosing or resetting {2}
35  DF  .~.~.~> Plural trips or combined operating means for single trip (e.g., magnetic with thermal) {2}
38  DF  .~.~.~> Magnetic {3}
43  DF  .~.~.~> Thermal {2}

DEFINITION

Classification: 335/21

(under subclass 6) Subject matter wherein the structure includes significant details of operating means whereby the contacts may be restrained in a closed condition by a latch or detent which may be tripped by the action of a magnet or other means. The contacts are usually held in circuit closing position and tripped to open position.

SEE OR SEARCH THIS CLASS, SUBCLASS:

167+, for significant latch devices.

172+, for tripping devices peculiarly adapted for use with electromagnetic switches but not restricted to automatic interrupters.

253+, for electromagnet and armature in general with armature latch.

SEE OR SEARCH CLASS

74, Machine Element or Mechanism, for automatically controlled mechanisms. 200, Electricity: Circuit Makers and Breakers,

12+, for dial type switches with electromagnetic release, subclasses 39+ for clock train operated switch with retarded latch trip, subclasses 411+, 415+, 470, 471, and 424 for snap switches with latch trip.

337, Electricity: Electrothermally or Thermally Actuated Switches,

70+, for bimetallically controlled electrothermal switches with thermally controlled latch or trip means, 150+ for fusible element controlled switches with latch or trip means, 174 for fusible cut out devices with latch or trip means and

356 for thermally controlled switches with latch or trip means.