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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:
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Patent Number Title Of Patent Date Issued
8603207 Acoustic cleaning assembly for use in power generation systems and method of assembling same Dec. 10, 2013
8191674 Acoustic loading device for loudspeakers Jun. 5, 2012
7938223 Sintered elements and associated systems May. 10, 2011
7743878 Folded horn enclosure with unitary pathway Jun. 29, 2010
7686129 Acoustic horn having internally raised geometric shapes Mar. 30, 2010
7650006 Method to generate a plane acoustic wave front, a plane wave channel, a loudspeaker construction and a linear loudspeaker array Jan. 19, 2010
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
6516076 Modular horn loudspeaker Feb. 4, 2003
6513622 Full-range loudspeaker system for cinema screen 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
5117463 Speaker system having directivity May. 26, 1992
5117462 Phasing plug for compression driver 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

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