US PATENT SUBCLASS 340 / 388.1
.~ Diaphragm (e.g., horn or buzzer)

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

Internet Version by PATENTEC © 1999      Terms of Use


340 /   HD   COMMUNICATIONS: ELECTRICAL

384.1  DF  AUDIBLE INDICATION {11}
388.1.~ Diaphragm (e.g., horn or buzzer) {7}
390.1  DF  .~.~> Rotary actuator {1}
388.2  DF  .~.~> Alternating current
388.3  DF  .~.~> With auxiliary flexible membrane
388.4  DF  .~.~> With resonance chamber
388.5  DF  .~.~> Armature support {1}
388.7  DF  .~.~> Interrupter {1}
391.1  DF  .~.~> Housing or mounting

DEFINITION

Classification: 340/388.1

Diaphragm (e.g., horn or buzzer):

(under subclass 384.1) Subject matter wherein the audible sounds are produced by the vibration of an actuated flexible membrane.

SEE OR SEARCH CLASS

116, Signals and Indicators,

142+, for nonelectrical diaphragm horns, and subclass 59 for vehicle-energy actuated diaphragm horns.

381, Electrical Audio Signal Processing Systems and Device,

112+, and subclasses 355+ for speaker, per se.