US PATENT SUBCLASS 310 / 369
.~.~.~ Circular disc, ring, or cylinder

Current as of: June, 1999
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310 /   HD   ELECTRICAL GENERATOR OR MOTOR STRUCTURE

300  DF  NON-DYNAMOELECTRIC {4}
311  DF  .~ Piezoelectric elements and devices {17}
367  DF  .~.~ Piezoelectric element shape {4}
369.~.~.~ Circular disc, ring, or cylinder

DEFINITION

Classification: 310/369

Circular disc, ring, or cylinder:

(under subclass 367) Subject matter wherein the overall shape of the piezoelectric element is essentially that of a right solid cylinder.

(1) Note. Subject matter of this subclass type may include, for example, hollow cylindrical piezoelectric elements, split-ring or C-shaped elements and such elements having machined or textured surfaces if the overall shape is essentially as described above.