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Class Information
Number: 181/154
Name: Acoustics > Diaphragm and enclosure > Inclined diaphragm
Description: Subject matter wherein the means to support the diaphragm is mounted at an angle to both the horizontal and vertical axes of one side of the enclosure means.










Patents under this class:
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Patent Number Title Of Patent Date Issued
8111855 Microphone assembly and a portable electronic device using the microphone assembly Feb. 7, 2012
7789192 Loudspeaker port handle Sep. 7, 2010
7364009 Loudspeaker mounting frame, loudspeaker and cabinet comprising a loudspeaker Apr. 29, 2008
7219763 Microphone assembly fitted to vehicle-mounted control module panel, that fits well May. 22, 2007
6766027 Elliptical flushmount speaker Jul. 20, 2004
6672423 Speaker and method of assembling the speaker Jan. 6, 2004
6578660 Speaker enclosure venturi expander Jun. 17, 2003
6070694 Loudspeaker assembly Jun. 6, 2000
5952619 In-ceiling loudspeaker Sep. 14, 1999
5929393 Speaker cabinet with sounding board Jul. 27, 1999
5734732 Speaker arrangement and mounting apparatus and method Mar. 31, 1998
5732140 Acoustic speaker system with expandable speaker enclosure Mar. 24, 1998
5525767 High-performance sound imaging system Jun. 11, 1996
5471018 Audio or video apparatus with a built-in loudspeaker Nov. 28, 1995
5319164 Speaker holder Jun. 7, 1994
5278361 Loudspeaker system Jan. 11, 1994
5258584 Multiple auxiliary compound driver loudspeaker system Nov. 2, 1993
5227591 Loudspeaker arrangement Jul. 13, 1993
5143169 Loudspeaker diaphragm provided with a rear load Sep. 1, 1992
5123500 Loudspeaker enclosure Jun. 23, 1992
5099948 Compact woofer speaker system Mar. 31, 1992
5088574 Ceiling speaker system Feb. 18, 1992
5086686 Keyboard instrument Feb. 11, 1992
5025885 Multiple chamber loudspeaker system Jun. 25, 1991
5000286 Modular loudspeaker system Mar. 19, 1991
4991688 Audio speaker system Feb. 12, 1991
4984653 Loudspeaker arrangement Jan. 15, 1991
4942939 Speaker system with folded audio transmission passage Jul. 24, 1990
4917212 Speaker supporting unit Apr. 17, 1990
4881265 Apex loudspeaker Nov. 14, 1989
4877105 Rear speaker unit for a motor vehicle Oct. 31, 1989
4875546 Loudspeaker with acoustic band-pass filter Oct. 24, 1989
4836327 Sound reinforcement enclosure employing cone loudspeaker with annular central loading member and coaxially mounted compression driver Jun. 6, 1989
4815559 Portable loudspeaker apparatus for use in live performances Mar. 28, 1989
4753317 Trapezoidal loudspeaker enclosure Jun. 28, 1988
4621708 Tweeter bidirectional radiating Nov. 11, 1986
4477887 Low noise mounting for accelerometer used in marine cable Oct. 16, 1984
4475620 Loudspeaker with wall reflex absorber Oct. 9, 1984
4437540 Loud-speaker Mar. 20, 1984
4251687 Stereophonic sound reproducing system Feb. 17, 1981
4224467 Corner mounted sound reproduction speaker apparatus Sep. 23, 1980
4206830 Vehicle speaker system provided with a passive radiator Jun. 10, 1980
4179585 Variable ratio full range direct-reflected pyramid inclined loudspeaker Dec. 18, 1979
D253699 Loudspeaker system Dec. 18, 1979
4165797 Adjustable high frequency sound dispersion system Aug. 28, 1979
4147229 Vibratile mode speaker cabinet Apr. 3, 1979
4146111 Speaker system Mar. 27, 1979
4142604 Speaker structure Mar. 6, 1979
4130174 Loudspeaker Dec. 19, 1978
4122911 Loudspeaker assembly Oct. 31, 1978

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