US PATENT SUBCLASS 181 / 148
DIAPHRAGM AND ENCLOSURE

Current as of: June, 1999
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181 /   HD   ACOUSTICS

148DIAPHRAGM AND ENCLOSURE {8}
149  DF  .~> Moisture proof
150  DF  .~> Recessed (e.g., wall-mounted, etc.)
151  DF  .~> With sound-absorbing means
152  DF  .~> With horn
153  DF  .~> Rounded enclosure (e.g., curved, etc.)
154  DF  .~> Inclined diaphragm
155  DF  .~> Reflector baffle
156  DF  .~> Reflex baffle

DEFINITION

Classification: 181/148

(under the class definition) Subject matter having means that can be vibrated by sound waves or produce sound waves and means to support and means to at least partially contain the vibrated means.

SEE OR SEARCH THIS CLASS, SUBCLASS:

199, for a speaker enclosure, per se.

SEE OR SEARCH CLASS

381, Electrical Audio Systems Processing Systems and Devices,

150+, for instruments designed to transform variable electrical current or potential into sound in combination with means to intensify the sound by mechanical means. Note especially subclasses 337+ for such combinations having sound resonators as the intensifying means. Also subclass 193 and 202+ for diaphragm and support plus electrical means to move the diaphragm.