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Class Information
Number: 181/151
Name: Acoustics > Diaphragm and enclosure > With sound-absorbing means
Description: Subject matter including sound absorbent material within the means to enclose the diaphragm for preventing undesirable effects.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7353907 |
Speaker enclosure for a wall mounted speaker system |
Apr. 8, 2008 |
| 7337874 |
Lightweight speaker enclosure |
Mar. 4, 2008 |
| 7325649 |
Loudspeaker with progressively damped acoustical chamber |
Feb. 5, 2008 |
| 7319772 |
Speaker device for improving mid/high-range frequencies |
Jan. 15, 2008 |
| 7270215 |
Loudspeaker enclosure with damping material laminated within internal shearing brace |
Sep. 18, 2007 |
| 7207413 |
Closed loop embedded audio transmission line technology for loudspeaker enclosures and systems |
Apr. 24, 2007 |
| 7201252 |
Loudspeaker systems |
Apr. 10, 2007 |
| RE39330 |
Speaker system and a method for improving sound quality thereof |
Oct. 10, 2006 |
| 7021419 |
Speaker system |
Apr. 4, 2006 |
| 7011178 |
Sound transmitter and speaker |
Mar. 14, 2006 |
| 6913110 |
Lightweight speaker enclosure |
Jul. 5, 2005 |
| 6886658 |
Loudspeaker enclosure system |
May. 3, 2005 |
| 6781829 |
Device for reducing the noise level of a component with moving parts and for cooling the same |
Aug. 24, 2004 |
| 6705426 |
Acoustic diffuser and method of production |
Mar. 16, 2004 |
| 6686036 |
Material for casing for acoustic equipment and casing for acoustic equipment fabricated therefrom |
Feb. 3, 2004 |
| 6681024 |
Device including a built-in electroacoustic transducer for optimum speech reproduction |
Jan. 20, 2004 |
| 6658129 |
Passive radiator having mass elements |
Dec. 2, 2003 |
| 6598700 |
Compression molded cellulose (CMC) loudspeaker cabinets and method for making same |
Jul. 29, 2003 |
| 6571909 |
Loudspeaker enclosure |
Jun. 3, 2003 |
| 6494289 |
Device for dynamic excitation of panel loudspeakers |
Dec. 17, 2002 |
| 6338395 |
Kapok loudspeaker enclosure damping material |
Jan. 15, 2002 |
| 6324292 |
Speaker apparatus |
Nov. 27, 2001 |
| 6320971 |
Speaker system and a method for improving sound quality thereof |
Nov. 20, 2001 |
| 6278789 |
Frequency selective acoustic waveguide damping |
Aug. 21, 2001 |
| 6243262 |
Sound muffling and heat-discharging case for computer storage device |
Jun. 5, 2001 |
| 6215655 |
Drive-in ordering apparatus |
Apr. 10, 2001 |
| 6205229 |
Television having a device for preventing vibration of speaker |
Mar. 20, 2001 |
| 6135236 |
Mounting plate for loudspeakers |
Oct. 24, 2000 |
| 6116373 |
Acoustic horns for loudspeakers |
Sep. 12, 2000 |
| 6092620 |
Support frame |
Jul. 25, 2000 |
| 6073723 |
Acoustic damping material |
Jun. 13, 2000 |
| 6058199 |
Speaker system with vibration isolation speaker unit mounting structure |
May. 2, 2000 |
| 6015025 |
Diffuser panel with built-in speaker arrangement and methods of installation |
Jan. 18, 2000 |
| 5979591 |
Collapsible portable speaker enclosure |
Nov. 9, 1999 |
| 5956412 |
Loudspeaker case structure for video display appliances |
Sep. 21, 1999 |
| 5949033 |
Constrained layer damped loudspeaker enclosure |
Sep. 7, 1999 |
| 5942734 |
Noise-attenuating shielding unit and method for loudspeakers |
Aug. 24, 1999 |
| 5936209 |
Fluid coupled subwoofer acoustic enclosure system with vent chamber |
Aug. 10, 1999 |
| 5909014 |
Low frequency equaphase surround loudspeaker |
Jun. 1, 1999 |
| 5866858 |
Loudspeaker method and apparatus |
Feb. 2, 1999 |
| 5847331 |
Omnidirectional loudspeaker |
Dec. 8, 1998 |
| 5824969 |
Speaker system with a three-dimensional spiral sound passage |
Oct. 20, 1998 |
| 5793000 |
Speaker system |
Aug. 11, 1998 |
| 5761322 |
Portable computer speaker enclosure |
Jun. 2, 1998 |
| 5737435 |
Sound-reproducing apparatus comprising an acoustic horn, and acoustic horn for use in the apparatus |
Apr. 7, 1998 |
| 5731555 |
Loudspeaker enclosure having a low reflection/low diffraction baffle |
Mar. 24, 1998 |
| 5731553 |
Speaker system |
Mar. 24, 1998 |
| 5552569 |
Exponential multi-ported acoustic enclosure |
Sep. 3, 1996 |
| 5525767 |
High-performance sound imaging system |
Jun. 11, 1996 |
| 5451726 |
Omnidirectional speaker system |
Sep. 19, 1995 |
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