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Class Information
Number: 181/153
Name: Acoustics > Diaphragm and enclosure > Rounded enclosure (e.g., curved, etc.)
Description: Subject matter wherein the means to enclose the diaphragm has at least one surface that is circular or curved.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 5872855 |
Multiple voice coil, multiple function loudspeaker |
Feb. 16, 1999 |
| 5864100 |
Speaker enclosure |
Jan. 26, 1999 |
| 5844176 |
Speaker enclosure having parallel porting channels for mid-range and bass speakers |
Dec. 1, 1998 |
| 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 |
| 5812685 |
Non-directional speaker system with point sound source |
Sep. 22, 1998 |
| 5734732 |
Speaker arrangement and mounting apparatus and method |
Mar. 31, 1998 |
| 5734728 |
Portable sound speaker system and driving circuit therefor |
Mar. 31, 1998 |
| 5721401 |
Sub-woofer module |
Feb. 24, 1998 |
| 5710395 |
Helmholtz resonator loudspeaker |
Jan. 20, 1998 |
| 5673329 |
Omni-directional loudspeaker system |
Sep. 30, 1997 |
| 5644109 |
Speaker enclosure |
Jul. 1, 1997 |
| 5638456 |
Piezo speaker and installation method for laptop personal computer and other multimedia applications |
Jun. 10, 1997 |
| 5552569 |
Exponential multi-ported acoustic enclosure |
Sep. 3, 1996 |
| 5525767 |
High-performance sound imaging system |
Jun. 11, 1996 |
| 5477506 |
In-flow acoustic sensor |
Dec. 19, 1995 |
| 5451726 |
Omnidirectional speaker system |
Sep. 19, 1995 |
| 5444194 |
Decorative speaker enclosure |
Aug. 22, 1995 |
| 5436976 |
Omni-directional stereo speaker |
Jul. 25, 1995 |
| 5414229 |
Molded bracket for mounting a speaker in a vehicle |
May. 9, 1995 |
| 5402502 |
Sound output system |
Mar. 28, 1995 |
| 5361380 |
Woofer module for use in a television set |
Nov. 1, 1994 |
| 5359158 |
Ceiling-mounted loudspeaker |
Oct. 25, 1994 |
| 5359664 |
Loudspeaker system |
Oct. 25, 1994 |
| 5319164 |
Speaker holder |
Jun. 7, 1994 |
| 5306880 |
Omnidirectional speaker system |
Apr. 26, 1994 |
| 5298690 |
Sound distributor with symmetry of revolution |
Mar. 29, 1994 |
| 5286928 |
Tunable speaker tube |
Feb. 15, 1994 |
| 5284222 |
Speaker cabinet |
Feb. 8, 1994 |
| 5268538 |
Hemispherically wide-radiating-angle loudspeaker system |
Dec. 7, 1993 |
| 5266752 |
Reflex folded horn speaker enclosure |
Nov. 30, 1993 |
| 5227591 |
Loudspeaker arrangement |
Jul. 13, 1993 |
| 5216211 |
Audio-visual furniture stand |
Jun. 1, 1993 |
| 5206464 |
Loudspeaker mounting assembly |
Apr. 27, 1993 |
| 5191177 |
Tube speaker |
Mar. 2, 1993 |
| 5144670 |
Sound output system |
Sep. 1, 1992 |
| 5137110 |
Highly directional sound projector and receiver apparatus |
Aug. 11, 1992 |
| 5133428 |
Direction-adjustable speaker system |
Jul. 28, 1992 |
| 5117938 |
Speaker installing holder |
Jun. 2, 1992 |
| 5115882 |
Omnidirectional dispersion system for multiway loudspeakers |
May. 26, 1992 |
| 5082084 |
Extensible sound case |
Jan. 21, 1992 |
| 5058169 |
Public address system |
Oct. 15, 1991 |
| 5012890 |
Acoustic apparatus |
May. 7, 1991 |
| 5009281 |
Acoustic apparatus |
Apr. 23, 1991 |
| 5009280 |
Acoustic apparatus |
Apr. 23, 1991 |
| 4991688 |
Audio speaker system |
Feb. 12, 1991 |
| 4979586 |
Acoustically shielded motorcycle helmet speaker enclosure |
Dec. 25, 1990 |
| 4977975 |
Vented motorcycle helmet speaker enclosure |
Dec. 18, 1990 |
| 4967872 |
Loud speaker system |
Nov. 6, 1990 |
| 4964482 |
Loudspeaker enclosure |
Oct. 23, 1990 |
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