US PATENT SUBCLASS 310 / 324
.~.~.~ Diaphragm


Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use



310 /   HD   ELECTRICAL GENERATOR OR MOTOR STRUCTURE

300  DF  NON-DYNAMOELECTRIC {4}
311  DF  .~ Piezoelectric elements and devices {17}
321  DF  .~.~ Combined with resonant structure {4}
324.~.~.~ Diaphragm


DEFINITION

Classification: 310/324

Diaphragm:

(under subclass 321) Subject matter in which the resonant structure is a diaphragm mechanically associated with the piezoelectric element, the combination being resonant at the operating frequency of the piezoelectric element.

SEE OR SEARCH THIS CLASS, SUBCLASS:

328, for the combination of a diaphragm driven by a piezoelectric element which diaphragm is not resonant with respect to the operating frequency at the element.

SEE OR SEARCH CLASS

181, Acoustics,

148+, for acoustical devices which use diaphragms.

340, Communications: Electrical, 338, for a noise generator which may include a piezoelectric element mounted on a diaphragm.