US PATENT SUBCLASS 396 / 248
.~.~ Piezoelectric driven

Current as of: June, 1999
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396 /   HD   PHOTOGRAPHY

213  DF  EXPOSURE CONTROL CIRCUIT {23}
246  DF  .~ Shutter speed function only {6}
248.~.~ Piezoelectric driven

DEFINITION

Classification: 396/248

Piezoelectric driven:

(under subclass 246) Subject matter wherein the exposure control circuit drives the shutter mechanism using a piezoelectric device.

(1) Note. A piezoelectric device produces a voltage when stressed or undergoes mechanical stress when subjected to a voltage.

SEE OR SEARCH THIS CLASS, SUBCLASS:

261, for piezoelectric device driving a diaphragm mechanism.

SEE OR SEARCH CLASS

310, Electrical Generator or Motor Structure,

311+, for a piezoelectric device, per se.