US PATENT SUBCLASS 335 / 17
.~.~ With switch condition signalling, indicating or alarm 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}
17.~.~ With switch condition signalling, indicating or alarm means

DEFINITION

Classification: 335/17

(under subclass 6) Subject matter wherein the circuit interrupting device includes signalling, indicating or alarm structure whereby the condition of the switch, whether open or closed, physically inoperative, etc., is automatically communicated to an operator or other interested observer by visual or audible means. In order to be classifiable in this subclass the signalling or indicating means must include structure in addition to an operating lever or other operating means whose position is dependent upon whether the contacts are open or closed.

SEE OR SEARCH THIS CLASS, SUBCLASS:

156, for electromagnetically operated switches with significant protective means for the switch itself or its contacts.

SEE OR SEARCH CLASS

200, Electricity: Circuit Makers and Breakers,

167, for switches in general with indicators. 337, Electricity: Electrothermally or Thermally Actuated Switches, appropriate subclasses for various types of electrothermal and thermally actuated switches with indicators.

340, Communications: Electrical,

480+, for electromagnetically operated mechanical traffic or vehicle signals, subclass 523 for signalling devices responsive to the sequence of operation of plural circuit breakers, subclass 644 for a switch or relay condition signalling device without significant switch or relay structure, and subclasses 652 and 366+ for visual signals electromagnetically actuated.