US PATENT SUBCLASS 340 / 388.7
.~.~ Interrupter

Current as of: June, 1999
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340 /   HD   COMMUNICATIONS: ELECTRICAL

384.1  DF  AUDIBLE INDICATION {11}
388.1  DF  .~ Diaphragm (e.g., horn or buzzer) {7}
388.7.~.~ Interrupter {1}
388.8  DF  .~.~.~> Having spring

DEFINITION

Classification: 340/388.7

Interrupter:

(under subclass 388.1) Subject matter including means for controlling the flow of current into an electromagnet thereby operating a movable part to vibrate the diaphragm.

SEE OR SEARCH THIS CLASS, SUBCLASS:

397.3, for interrupter of percussion-type sound producers.