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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:
| 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 |
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