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Class Information
Number: 181/144
Name: Acoustics > Plural diaphragm sound sources
Description: Subject matter including at least two separate means that can be vibrated by sound waves or produce sound waves.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7392880 |
Dual range horn with acoustic crossover |
Jul. 1, 2008 |
| 7350618 |
Multimedia speaker product |
Apr. 1, 2008 |
| 7343018 |
System of sound transducers with controllable directional properties |
Mar. 11, 2008 |
| 7333626 |
Arbitrary coverage angle sound integrator |
Feb. 19, 2008 |
| 7328769 |
Rigging system for loudspeaker arrays |
Feb. 12, 2008 |
| 7301094 |
Device for driving vibration source |
Nov. 27, 2007 |
| 7261180 |
Rigging system for speaker cabinets |
Aug. 28, 2007 |
| 7204799 |
Microphone optimized for implant use |
Apr. 17, 2007 |
| 7188703 |
Device for establishing noise in a motor vehicle |
Mar. 13, 2007 |
| 7151836 |
Speaker apparatus and sound reproduction apparatus |
Dec. 19, 2006 |
| 7134523 |
System for integrating mid-range and high-frequency acoustic sources in multi-way loudspeakers |
Nov. 14, 2006 |
| 7130432 |
Speaker mounting system and method |
Oct. 31, 2006 |
| 7092541 |
Surround sound loudspeaker system |
Aug. 15, 2006 |
| 7021419 |
Speaker system |
Apr. 4, 2006 |
| 7011178 |
Sound transmitter and speaker |
Mar. 14, 2006 |
| 6961438 |
Loudspeaker system having wide-directional characteristics |
Nov. 1, 2005 |
| 6870942 |
Loudspeaker for line array sound system |
Mar. 22, 2005 |
| 6834113 |
Loudspeaker system |
Dec. 21, 2004 |
| 6816065 |
Electromechanical horn warning system |
Nov. 9, 2004 |
| 6766027 |
Elliptical flushmount speaker |
Jul. 20, 2004 |
| 6721431 |
Prismatic loudspeaker/microphone array |
Apr. 13, 2004 |
| 6704426 |
Loudspeaker system |
Mar. 9, 2004 |
| 6678384 |
Speaker structure |
Jan. 13, 2004 |
| 6675931 |
Low profile audio speaker |
Jan. 13, 2004 |
| 6655495 |
Loudspeaker damper and loudspeaker |
Dec. 2, 2003 |
| 6647122 |
Loudspeaker drive unit |
Nov. 11, 2003 |
| 6643379 |
Acoustical transducer for recreating a spatial sound stage and improved localization of original sounds sources |
Nov. 4, 2003 |
| 6640924 |
Rigging system for loudspeakers |
Nov. 4, 2003 |
| 6628793 |
Speaker system |
Sep. 30, 2003 |
| 6621909 |
Horn loudspeaker and loudspeaker systems |
Sep. 16, 2003 |
| 6560936 |
Aircraft engine run-up hangar |
May. 13, 2003 |
| 6536554 |
Loudspeaker |
Mar. 25, 2003 |
| 6493452 |
Speaker unit |
Dec. 10, 2002 |
| 6431308 |
High fidelity small omnidirectional loudspeaker |
Aug. 13, 2002 |
| 6411718 |
Sound reproduction employing unity summation aperture loudspeakers |
Jun. 25, 2002 |
| 6393132 |
Speaker |
May. 21, 2002 |
| 6356640 |
Direction adjusting arrangement for tweeter |
Mar. 12, 2002 |
| 6356642 |
Multi-speaker system |
Mar. 12, 2002 |
| 6298942 |
Housing having a loudspeaker system |
Oct. 9, 2001 |
| 6279678 |
Speaker assembly |
Aug. 28, 2001 |
| 6222929 |
Speaker having middle-high sound speakers |
Apr. 24, 2001 |
| 6186269 |
Mini surround sound loudspeaker |
Feb. 13, 2001 |
| 6169811 |
Bandpass loudspeaker system |
Jan. 2, 2001 |
| 6152257 |
Audio speaker |
Nov. 28, 2000 |
| 6118883 |
System for controlling low frequency acoustical directivity patterns and minimizing directivity discontinuities during frequency transitions |
Sep. 12, 2000 |
| 6095279 |
Loudspeaker system |
Aug. 1, 2000 |
| 6064744 |
Omni-directional loudspeaker |
May. 16, 2000 |
| 6057659 |
Speaker apparatus |
May. 2, 2000 |
| 6056083 |
Loudspeakers in architectural form |
May. 2, 2000 |
| 6026927 |
Speaker assembly |
Feb. 22, 2000 |
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