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Class Information
Number: 181/156
Name: Acoustics > Diaphragm and enclosure > Reflex baffle
Description: Subject matter wherein the vibrated means is substantially enclosed and a portion of a radiation wave from the rear of the vibrated means is propagated forward after a shift or modification of the wave.


Patents under this class:
1 2 3 4 5 6

Patent Number Title Of Patent Date Issued
7350618 Multimedia speaker product Apr. 1, 2008
7325649 Loudspeaker with progressively damped acoustical chamber Feb. 5, 2008
7284637 Low-frequency sound reproducing speaker apparatus Oct. 23, 2007
7284638 Loudspeaker low profile quarter wavelength transmission line and enclosure and method Oct. 23, 2007
7263387 Speaker module design Aug. 28, 2007
7252175 Speaker apparatus and manufacturing method of speaker apparatus Aug. 7, 2007
7252176 Reflex-ported folded horn enclosure Aug. 7, 2007
7201252 Loudspeaker systems Apr. 10, 2007
7162049 Ported loudspeaker system and method with reduced air turbulence, bipolar radiation pattern and novel appearance Jan. 9, 2007
7111706 Enclosure and audio-visual apparatus comprising same Sep. 26, 2006
7051835 Bass-reflex loudspeaker system and method of manufacturing the same May. 30, 2006
7021419 Speaker system Apr. 4, 2006
7011178 Sound transmitter and speaker Mar. 14, 2006
6973994 Apparatus for increasing the quality of sound from an acoustic source Dec. 13, 2005
6955241 Speaker unit for low frequency reproduction Oct. 18, 2005
6918526 Muffler for staple guns Jul. 19, 2005
6907955 Electromagnetic electroacoustic transducer Jun. 21, 2005
6886658 Loudspeaker enclosure system May. 3, 2005
6801633 Subwoofer assembly Oct. 5, 2004
6771787 Waveguide electroacoustical transducing Aug. 3, 2004
6763117 Speaker enclosure Jul. 13, 2004
6704426 Loudspeaker system Mar. 9, 2004
6678387 Loudspeaker having cooling system Jan. 13, 2004
6665413 Infrasonic Helmholtz resonator Dec. 16, 2003
6634455 Thin-wall multi-concentric sleeve speaker Oct. 21, 2003
6619424 Speaker enclosure configured to minimize diffraction Sep. 16, 2003
6597795 Device to improve loudspeaker enclosure duct Jul. 22, 2003
6588544 Speaker box with molded plastic end caps Jul. 8, 2003
6568502 Sounder, speaker and sound head using the sounder May. 27, 2003
6561311 Speaker cabinet May. 13, 2003
6560343 Speaker system May. 6, 2003
6484843 Speaker apparatus equipped with means for producing complicated waveform of low frequency with higher improved fidelity Nov. 26, 2002
6457548 Passive radiator with mass elements Oct. 1, 2002
6431309 Loudspeaker system Aug. 13, 2002
6411721 Audio speaker with harmonic enclosure Jun. 25, 2002
6411720 Speaker systems with lower frequency of resonance Jun. 25, 2002
6396936 Auxiliary bass radiator units May. 28, 2002
6367579 Inflatable speaker assembly Apr. 9, 2002
6349792 Sound enhancing speaking cabinet for a removable speaker assembly Feb. 26, 2002
6345685 Loudspeaker system Feb. 12, 2002
6307947 Low profile speaker enclosure Oct. 23, 2001
6298943 Bass-reflex speaker assembly Oct. 9, 2001
6275597 Loudspeaker system having a bass-reflex port Aug. 14, 2001
6237715 Subwoofer assembly May. 29, 2001
6169811 Bandpass loudspeaker system Jan. 2, 2001
6141428 Audio speaker system Oct. 31, 2000
6079515 Speaker enclosure Jun. 27, 2000
6062339 Compact spiral cavity loudspeaker enclosure May. 16, 2000
6062338 Loud speaker enclosure May. 16, 2000
6019188 Enclosures for loudspeaker drive units Feb. 1, 2000

1 2 3 4 5 6


 
 
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