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Class Information
Number: 181/192
Name: Acoustics > Sound-modifying means > Intensifying horn > Particular shape of the horn
Description: Subject matter characterized by the form or configuration of a wall of the horn.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7520368 |
Horizontally folded reflex-ported bass horn enclosure |
Apr. 21, 2009 |
| 7513332 |
Convertible folded horn enclosure with improved compactness |
Apr. 7, 2009 |
| 7392880 |
Dual range horn with acoustic crossover |
Jul. 1, 2008 |
| 7360499 |
Helmholtz resonator type marine signal |
Apr. 22, 2008 |
| 7275621 |
Skew horn for a loudspeaker |
Oct. 2, 2007 |
| 7268467 |
Acoustic transducer |
Sep. 11, 2007 |
| 7095868 |
Phase plug with optimum aperture shapes |
Aug. 22, 2006 |
| 7044265 |
Constant directivity acoustic horn |
May. 16, 2006 |
| 6868937 |
Sub-woofer system for use in vehicle |
Mar. 22, 2005 |
| 6837334 |
Acoustic horn |
Jan. 4, 2005 |
| 6754360 |
Signal-horn |
Jun. 22, 2004 |
| 6712177 |
Cross-fired multiple horn loudspeaker system |
Mar. 30, 2004 |
| 6585077 |
Sound-producing device with acoustic waveguide |
Jul. 1, 2003 |
| 6557664 |
Loudspeaker |
May. 6, 2003 |
| 6334505 |
Optimum edges for speakers and musical instruments |
Jan. 1, 2002 |
| 6112847 |
Loudspeaker with differentiated energy distribution in vertical and horizontal planes |
Sep. 5, 2000 |
| 6079514 |
Acoustic horn transducer with a conic type diffuser having and exponential profile in wood |
Jun. 27, 2000 |
| 6059069 |
Loudspeaker waveguide design |
May. 9, 2000 |
| 5991421 |
Radially expanding multiple flat-surfaced waveguide device |
Nov. 23, 1999 |
| 5925856 |
Loudspeaker horn |
Jul. 20, 1999 |
| 5828627 |
Method of and apparatus for producing spherical waves in the ultrasonic range |
Oct. 27, 1998 |
| 5750943 |
Speaker array with improved phase characteristics |
May. 12, 1998 |
| 5646381 |
Roof mounted sound horns for vehicles |
Jul. 8, 1997 |
| 5631450 |
Megaphone |
May. 20, 1997 |
| 5398992 |
Seat having sound system with acoustic waveguide |
Mar. 21, 1995 |
| 5285025 |
Loudspeaker horn |
Feb. 8, 1994 |
| 5206465 |
Sound collecting and concentrating device for attaching to the back of a loudspeaker |
Apr. 27, 1993 |
| 5187333 |
Coiled exponential bass/midrange/high frequency horn loudspeaker |
Feb. 16, 1993 |
| 5163167 |
Sound wave guide |
Nov. 10, 1992 |
| 5160815 |
Megaphone apparatus |
Nov. 3, 1992 |
| 5020630 |
Loudspeaker and horn therefor |
Jun. 4, 1991 |
| 4975623 |
Electromagnetic relay for transmitting operating sounds thereof |
Dec. 4, 1990 |
| 4930596 |
Loudspeaker system |
Jun. 5, 1990 |
| 4908601 |
Loud speaker with horizontal radiation pattern |
Mar. 13, 1990 |
| 4884251 |
Housing for a sonic transducer |
Nov. 28, 1989 |
| 4878561 |
Sound emitter |
Nov. 7, 1989 |
| 4836327 |
Sound reinforcement enclosure employing cone loudspeaker with annular central loading member and coaxially mounted compression driver |
Jun. 6, 1989 |
| 4685532 |
Constant directivity loudspeaker horn |
Aug. 11, 1987 |
| 4580655 |
Defined coverage loudspeaker horn |
Apr. 8, 1986 |
| 4469921 |
Horn type loudspeaker |
Sep. 4, 1984 |
| 4465160 |
Horn speaker |
Aug. 14, 1984 |
| 4434592 |
Heat and sound insulating structure for boarding or other non-loadbearing wall |
Mar. 6, 1984 |
| 4429762 |
Horn loudspeakers of the sectorial diffusion type, and method for making said loudspeakers |
Feb. 7, 1984 |
| 4390078 |
Loudspeaker horn |
Jun. 28, 1983 |
| 4381831 |
High frequency horn |
May. 3, 1983 |
| 4369857 |
Loudspeaker and horn combination |
Jan. 25, 1983 |
| 4344504 |
Directional loudspeaker |
Aug. 17, 1982 |
| 4324313 |
Exponential horn for use in horn-type loudspeakers |
Apr. 13, 1982 |
| 4308932 |
Loudspeaker horn |
Jan. 5, 1982 |
| 4297538 |
Resonant electroacoustic transducer with increased band width response |
Oct. 27, 1981 |
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