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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 |
| 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 |
| 6002780 |
Audio speaker having rotatable tweeter |
Dec. 14, 1999 |
| 5996728 |
Modular speaker cabinet including an integral rigging system |
Dec. 7, 1999 |
| 5988314 |
Sound output system |
Nov. 23, 1999 |
| 5920039 |
Speaker support bar and sound chamber above vehicle headliner |
Jul. 6, 1999 |
| 5900593 |
Loudspeaker system |
May. 4, 1999 |
| 5898137 |
Speaker system for television set |
Apr. 27, 1999 |
| 5889876 |
Hemispherical speaker system |
Mar. 30, 1999 |
| 5872339 |
High performance loudspeaker system |
Feb. 16, 1999 |
| 5832099 |
Speaker system having an undulating rigid speaker enclosure |
Nov. 3, 1998 |
| 5821470 |
Broadband acoustical transmitting system |
Oct. 13, 1998 |
| 5815589 |
Push-pull transmission line loudspeaker |
Sep. 29, 1998 |
| 5812685 |
Non-directional speaker system with point sound source |
Sep. 22, 1998 |
| 5809150 |
Surround sound loudspeaker system |
Sep. 15, 1998 |
| 5802190 |
Linear speaker array |
Sep. 1, 1998 |
| 5802194 |
Stereo loudspeaker system with tweeters mounted on rotatable enlongated arms |
Sep. 1, 1998 |
| 5739480 |
Speaker base for alternatively mounting different drivers |
Apr. 14, 1998 |
| 5715322 |
Throat device interconnecting a plurality of drive units and a horn |
Feb. 3, 1998 |
| 5673329 |
Omni-directional loudspeaker system |
Sep. 30, 1997 |
| 5666433 |
Microphone & loudspeaker system |
Sep. 9, 1997 |
| 5659155 |
Acoustical transducer enclosure |
Aug. 19, 1997 |
| 5646378 |
Collapsible modular sound reproduction system |
Jul. 8, 1997 |
| 5635686 |
Composite speaker system having a directional adjustable tweeter |
Jun. 3, 1997 |
| 5629501 |
Composite speaker system having a directional adjustable transducer |
May. 13, 1997 |
| 5606623 |
Overhead vehicular loud speaker cabinet |
Feb. 25, 1997 |
| 5602366 |
Spaceframe with array element positioning |
Feb. 11, 1997 |
| 5594804 |
Multiple cone type loudspeaker |
Jan. 14, 1997 |
| 5590214 |
Vertical array type speaker system |
Dec. 31, 1996 |
| 5512714 |
Composite speaker system having a directional adjustable tweeter |
Apr. 30, 1996 |
| 5436976 |
Omni-directional stereo speaker |
Jul. 25, 1995 |
| 5430260 |
Speaker system |
Jul. 4, 1995 |
| 5420563 |
Motor-vehicle horn |
May. 30, 1995 |
| 5343535 |
Loudspeaker device |
Aug. 30, 1994 |
| 5339286 |
Composite electroacoustic transducer |
Aug. 16, 1994 |
| 5324896 |
Audio loudspeaker system |
Jun. 28, 1994 |
| 5321388 |
High efficiency phase and amplitude matched multiple horn electronic siren |
Jun. 14, 1994 |
| 5309518 |
Multiple driver electroacoustical transducing |
May. 3, 1994 |
| 5308937 |
Loudspeaker apparatus for electronic keyboard musical instrument |
May. 3, 1994 |
| 5291559 |
Computer speaker |
Mar. 1, 1994 |
| 5268538 |
Hemispherically wide-radiating-angle loudspeaker system |
Dec. 7, 1993 |
| 5266751 |
Cluster of loudspeaker cabinets having adjustable splay angle |
Nov. 30, 1993 |
| 5216210 |
Loudspeaker system with passive sound reflective intensifier |
Jun. 1, 1993 |
| 5216209 |
Loudspeaker system and method for disbursing sounds waves |
Jun. 1, 1993 |
| 5170435 |
Waveguide electroacoustical transducing |
Dec. 8, 1992 |
| 5150417 |
Bass reflex type speaker system |
Sep. 22, 1992 |
| 5143169 |
Loudspeaker diaphragm provided with a rear load |
Sep. 1, 1992 |
| 5123500 |
Loudspeaker enclosure |
Jun. 23, 1992 |
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