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Class Information
Number: 181/191
Name: Acoustics > Sound-modifying means > Intensifying horn > With external sound deflector
Description: Subject matter including means for changing the direction of the sound after it has left the horn.










Patents under this class:

Patent Number Title Of Patent Date Issued
8259965 Loudspeaker device with sound enhancing structure Sep. 4, 2012
8036403 Directional sound wave radiator Oct. 11, 2011
7912234 Acoustic projector for propagating a low dispersion sound field Mar. 22, 2011
7845462 Wide frequency range horn with modular method for reducing diffraction effects Dec. 7, 2010
7837006 Enhanced spectrum acoustic energy projection system Nov. 23, 2010
7766122 Acoustic energy projection system Aug. 3, 2010
7621369 Acoustic energy projection system Nov. 24, 2009
7596236 Loudspeaker with direct emission and optimised radiation Sep. 29, 2009
7299893 Loudspeaker horn and method for controlling grating lobes in a line array of acoustic sources Nov. 27, 2007
7278513 Internal lens system for loudspeaker waveguides Oct. 9, 2007
7275621 Skew horn for a loudspeaker Oct. 2, 2007
7184562 Loudspeaker apparatus Feb. 27, 2007
7178629 Electroacoustic public address unit with acoustic horn or waveguide Feb. 20, 2007
7016513 Variable disposition wide band multi-way loudspeakers Mar. 21, 2006
6860363 Planar acoustic waveguide Mar. 1, 2005
6820718 Acoustic reproduction device with improved directional characteristics Nov. 23, 2004
6343132 Loudspeaker Jan. 29, 2002
5988314 Sound output system Nov. 23, 1999
5898137 Speaker system for television set Apr. 27, 1999
5889877 Cabinet for a loudspeaker Mar. 30, 1999
5784473 Sound system Jul. 21, 1998
5721401 Sub-woofer module Feb. 24, 1998
5373771 Brass and wind musical instrument attachment and method related thereto Dec. 20, 1994
5293010 Sound dampening device for horns Mar. 8, 1994
5243152 Sound anti-muffler for a sound generator Sep. 7, 1993
5220608 Method and means for stereophonic sound reproduction Jun. 15, 1993
5181301 Method of making a very compact audio warning system Jan. 26, 1993
5144670 Sound output system Sep. 1, 1992
4939703 Transducer baffle and sensor using same Jul. 3, 1990
4908601 Loud speaker with horizontal radiation pattern Mar. 13, 1990
4878561 Sound emitter Nov. 7, 1989
4689609 Electronic horn with spiral deflecting walls coupled to a truncated cone structure Aug. 25, 1987
RE30300 Acoustical reflector for wind instruments Jun. 10, 1980
4164631 Horn loudspeaker with acoustic lens Aug. 14, 1979
4146999 Acoustical panel with rigidified edges Apr. 3, 1979
4134324 Sound projector for musical drums Jan. 16, 1979
4033431 Acoustic crossover speaker enclosure Jul. 5, 1977
4012983 Acoustical reflector for wind instruments Mar. 22, 1977
3944757 High-fidelity moving-coil loudspeaker Mar. 16, 1976
3930561 Low distortion pyramidal dispersion speaker Jan. 6, 1976











 
 
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