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Class Information
Number: 181/145
Name: Acoustics > Plural diaphragm sound sources > Plural chambers
Description: Subject matter wherein the vibrated means are mounted in more than one enclosure or compartment.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7578367 |
Speaker set and electronic product incorporating the same |
Aug. 25, 2009 |
| 7578368 |
Speaker set for electronic product |
Aug. 25, 2009 |
| 7577265 |
Loudspeaker system providing improved sound presence and frequency response in mid and high frequency ranges |
Aug. 18, 2009 |
| 7556121 |
Speaker set and mobile phone incorporating the same |
Jul. 7, 2009 |
| 7553288 |
Sound and vibration transmission pad and system |
Jun. 30, 2009 |
| 7519195 |
Sound system for industrial tool chests |
Apr. 14, 2009 |
| 7454030 |
Subwoofer with cascaded linear array of drivers |
Nov. 18, 2008 |
| 7418104 |
Speaker system |
Aug. 26, 2008 |
| 7392880 |
Dual range horn with acoustic crossover |
Jul. 1, 2008 |
| 7350618 |
Multimedia speaker product |
Apr. 1, 2008 |
| 7328769 |
Rigging system for loudspeaker arrays |
Feb. 12, 2008 |
| 7207413 |
Closed loop embedded audio transmission line technology for loudspeaker enclosures and systems |
Apr. 24, 2007 |
| 7201251 |
Modular speaker cabinet |
Apr. 10, 2007 |
| 7188703 |
Device for establishing noise in a motor vehicle |
Mar. 13, 2007 |
| 7151836 |
Speaker apparatus and sound reproduction apparatus |
Dec. 19, 2006 |
| 7130432 |
Speaker mounting system and method |
Oct. 31, 2006 |
| 7103193 |
Bandpass woofer enclosure with multiple acoustic fibers |
Sep. 5, 2006 |
| 7021419 |
Speaker system |
Apr. 4, 2006 |
| 6999597 |
Speaker stacking structure |
Feb. 14, 2006 |
| 6985593 |
Baffle vibration reducing |
Jan. 10, 2006 |
| 6973994 |
Apparatus for increasing the quality of sound from an acoustic source |
Dec. 13, 2005 |
| 6940990 |
Multi-channel audio center speaker device |
Sep. 6, 2005 |
| 6782112 |
Low frequency transducer enclosure |
Aug. 24, 2004 |
| 6771787 |
Waveguide electroacoustical transducing |
Aug. 3, 2004 |
| 6739424 |
Speaker system |
May. 25, 2004 |
| 6719090 |
Speaker assembly |
Apr. 13, 2004 |
| 6704426 |
Loudspeaker system |
Mar. 9, 2004 |
| 6625289 |
Stereo loudspeaker system |
Sep. 23, 2003 |
| 6504938 |
Dual-chamber loudspeaker |
Jan. 7, 2003 |
| 6431309 |
Loudspeaker system |
Aug. 13, 2002 |
| 6243477 |
Audio system with partitioned input and output compartments |
Jun. 5, 2001 |
| 6223853 |
Loudspeaker system incorporating acoustic waveguide filters and method of construction |
May. 1, 2001 |
| 6169811 |
Bandpass loudspeaker system |
Jan. 2, 2001 |
| 6078676 |
Speaker system with a three-dimensional spiral sound passage |
Jun. 20, 2000 |
| 6031919 |
Loudspeaker system and sound reproducing apparatus |
Feb. 29, 2000 |
| 6016353 |
Large scale sound reproduction system having cross-cabinet horizontal array of horn elements |
Jan. 18, 2000 |
| 5936209 |
Fluid coupled subwoofer acoustic enclosure system with vent chamber |
Aug. 10, 1999 |
| 5895896 |
Fluid coupled subwoofer acoustic enclosure system with port chamber |
Apr. 20, 1999 |
| 5872339 |
High performance loudspeaker system |
Feb. 16, 1999 |
| 5832099 |
Speaker system having an undulating rigid speaker enclosure |
Nov. 3, 1998 |
| 5824969 |
Speaker system with a three-dimensional spiral sound passage |
Oct. 20, 1998 |
| 5818942 |
Multimedia stereo sound source |
Oct. 6, 1998 |
| 5809150 |
Surround sound loudspeaker system |
Sep. 15, 1998 |
| 5792999 |
Noise attenuating in ported enclosure |
Aug. 11, 1998 |
| 5714721 |
Porting |
Feb. 3, 1998 |
| 5673329 |
Omni-directional loudspeaker system |
Sep. 30, 1997 |
| 5657392 |
Multi-way speaker with a cabinet defining a midrange driver pyramidal compartment |
Aug. 12, 1997 |
| 5629502 |
Speaker apparatus |
May. 13, 1997 |
| 5621804 |
Composite loudspeaker apparatus and driving method thereof |
Apr. 15, 1997 |
| 5602367 |
Multiple tuned high power bass reflex speaker system |
Feb. 11, 1997 |
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