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Class Information
Number: 181/159
Name: Acoustics > Diaphragm > With horn
Description: Subject matter including a sound intensifying horn acoustically coupled to the diaphragm.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7392880 |
Dual range horn with acoustic crossover |
Jul. 1, 2008 |
| 7299893 |
Loudspeaker horn and method for controlling grating lobes in a line array of acoustic sources |
Nov. 27, 2007 |
| 7275621 |
Skew horn for a loudspeaker |
Oct. 2, 2007 |
| 7203329 |
Audio speaker system employing an axi-symmetrical horn with wide dispersion angle characteristics over an extended frequency range |
Apr. 10, 2007 |
| 7072481 |
Two-stage phasing plug system in a compression driver |
Jul. 4, 2006 |
| 6668969 |
Manifold for a horn loudspeaker and method |
Dec. 30, 2003 |
| 6591938 |
Speaker diaphragm |
Jul. 15, 2003 |
| 6574344 |
Directional horn speaker system |
Jun. 3, 2003 |
| 6513622 |
Full-range loudspeaker system for cinema screen |
Feb. 4, 2003 |
| 6516076 |
Modular horn loudspeaker |
Feb. 4, 2003 |
| 6502662 |
Speaker having a hemispherical vibrator |
Jan. 7, 2003 |
| 6394223 |
Loudspeaker with differential energy distribution in vertical and horizontal planes |
May. 28, 2002 |
| 6334505 |
Optimum edges for speakers and musical instruments |
Jan. 1, 2002 |
| 6064745 |
Compression driver phase plug |
May. 16, 2000 |
| 6059069 |
Loudspeaker waveguide design |
May. 9, 2000 |
| 5991421 |
Radially expanding multiple flat-surfaced waveguide device |
Nov. 23, 1999 |
| 5802196 |
Speaker for radiating sound waves in all directions relative to a speaker supporting surface |
Sep. 1, 1998 |
| 5778084 |
Loudspeaker with phase correction |
Jul. 7, 1998 |
| 5420563 |
Motor-vehicle horn |
May. 30, 1995 |
| 5351220 |
Moving-coil electrodynamic electroacoustical transducer |
Sep. 27, 1994 |
| 5296656 |
Sound collecting and concentrating device for attaching to the back of multiple loudspeakers |
Mar. 22, 1994 |
| 5285025 |
Loudspeaker horn |
Feb. 8, 1994 |
| 5261006 |
Loudspeaker system comprising a helmholtz resonator coupled to an acoustic tube |
Nov. 9, 1993 |
| 5218337 |
Automotive vehicle tone generator |
Jun. 8, 1993 |
| 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 |
| 5181301 |
Method of making a very compact audio warning system |
Jan. 26, 1993 |
| 5163167 |
Sound wave guide |
Nov. 10, 1992 |
| 5117462 |
Phasing plug for compression driver |
May. 26, 1992 |
| 5117463 |
Speaker system having directivity |
May. 26, 1992 |
| 5103482 |
Apparatus and method for reproducing high fidelity sound |
Apr. 7, 1992 |
| 5078074 |
Vehicle horn |
Jan. 7, 1992 |
| 5012889 |
Speaker enclosure |
May. 7, 1991 |
| 4975965 |
Loudspeaker design |
Dec. 4, 1990 |
| 4965837 |
Environmentally resistant loudspeaker |
Oct. 23, 1990 |
| 4930596 |
Loudspeaker system |
Jun. 5, 1990 |
| 4893695 |
Speaker system |
Jan. 16, 1990 |
| 4893343 |
Dual diverging manifold loudspeaker system |
Jan. 9, 1990 |
| 4889208 |
Speaker enclosures |
Dec. 26, 1989 |
| 4865159 |
Acoustic horn and attachment device |
Sep. 12, 1989 |
| 4860367 |
Low frequency loud speaker |
Aug. 22, 1989 |
| 4853964 |
Electroacoustic apparatus for reproducing lowest to medium frequencies |
Aug. 1, 1989 |
| 4850452 |
Loudspeaker structure |
Jul. 25, 1989 |
| 4836327 |
Sound reinforcement enclosure employing cone loudspeaker with annular central loading member and coaxially mounted compression driver |
Jun. 6, 1989 |
| 4823110 |
Tone generator with improved diaphragm mounting |
Apr. 18, 1989 |
| 4811816 |
Symmetric double phonic diaphragm volume-enhancing device |
Mar. 14, 1989 |
| 4808202 |
Adsorptive fiber sheet |
Feb. 28, 1989 |
| 4790408 |
Coiled exponential bass/midrange horn loudspeakers |
Dec. 13, 1988 |
| 4776428 |
Sound projection system |
Oct. 11, 1988 |
| 4718517 |
Loudspeaker and acoustic transformer therefor |
Jan. 12, 1988 |
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