US PATENT SUBCLASS 73 / 35.11
.~.~.~ Piezoelectric

Current as of: June, 1999
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73 /   HD   MEASURING AND TESTING

35.01  DF  ENGINE DETONATION (E.G., KNOCK) {4}
35.07  DF  .~ Specific type of detonation sensor {3}
35.09  DF  .~.~ Vibration {1}
35.11.~.~.~ Piezoelectric

DEFINITION

Classification: 73/35.11

Piezoelectric:

(under subclass 35.09) Subject matter wherein the sensing means comprises a pressure responsive material which generates an electric signal in response to vibration.

SEE OR SEARCH CLASS

310, Electrical Generator or Motor Structure,

329, for a vibration responsive piezoelectric detector, per se.