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Class Information
Number: 181/194
Name: Acoustics > Sound-modifying means > Intensifying horn > Particular shape of the horn > Doubly folded sound path
Description: Subject matter wherein the wall of the horn is arranged to provide a sound path which changes direction by substantially 180 degrees at least twice.










Patents under this class:

Patent Number Title Of Patent Date Issued
8050442 Cascaded transducer array arrangement for control over an acoustic pressure gradient through a horn Nov. 1, 2011
8036403 Directional sound wave radiator Oct. 11, 2011
7921960 Acoustic cabinet Apr. 12, 2011
7837007 Sound-absorbing element for transport means, in particular for aircraft Nov. 23, 2010
7190801 Horn loudspeaker Mar. 13, 2007
6712177 Cross-fired multiple horn loudspeaker system Mar. 30, 2004
5327985 Acoustical transducer enclosure Jul. 12, 1994
5233136 Horn loadspeaker Aug. 3, 1993
5181301 Method of making a very compact audio warning system Jan. 26, 1993
5111905 Speaker enclosure May. 12, 1992
4982436 Dual horn folded soundpath loudspeaker Jan. 1, 1991
4896134 Armored self-contained outdoor/indoor siren assembly Jan. 23, 1990
4893343 Dual diverging manifold loudspeaker system Jan. 9, 1990
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
4790408 Coiled exponential bass/midrange horn loudspeakers Dec. 13, 1988
4210223 Low frequency folded exponential horn loudspeaker apparatus with bifurcated sound path Jul. 1, 1980
4168761 Symmetrical air friction enclosure for speakers Sep. 25, 1979
4116302 Horn loudspeaker Sep. 26, 1978
3993162 Acoustic speaker system Nov. 23, 1976











 
 
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