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Class Information
Number: 381/372
Name: Electrical audio signal processing systems and devices > Electro-acoustic audio transducer > Plural or compound reproducers > Headphone > Particular cup > Having mechanical or acoustic sound attenuation
Description: Subject matter in which the particular feature of a cup is designed to reduce noise.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7457428 |
Double hearing protection device |
Nov. 25, 2008 |
| 7356362 |
Headset structure with built-in audio source |
Apr. 8, 2008 |
| 7268669 |
Personal sensory reduction system, and method |
Sep. 11, 2007 |
| 7263195 |
In-ear monitor with shaped dual bore |
Aug. 28, 2007 |
| 7165647 |
Mechanical acoustic filter by erosion etching |
Jan. 23, 2007 |
| 7162051 |
Headphone |
Jan. 9, 2007 |
| 7035421 |
Earphone set |
Apr. 25, 2006 |
| 6788798 |
Method and arrangement for improving leak tolerance of an earpiece |
Sep. 7, 2004 |
| 6775390 |
Headset with movable earphones |
Aug. 10, 2004 |
| 6768803 |
Method and apparatus for selective acoustic signal filtering |
Jul. 27, 2004 |
| 6768804 |
Adjustable microphone boom with acoustic valve |
Jul. 27, 2004 |
| 6731771 |
Foam mounted receiver for communication headset |
May. 4, 2004 |
| 6597792 |
Headset noise reducing |
Jul. 22, 2003 |
| 6567525 |
Supra aural active noise reduction headphones |
May. 20, 2003 |
| 6466681 |
Weather resistant sound attenuating modular communications headset |
Oct. 15, 2002 |
| 6353938 |
Sound attenuating earmuff |
Mar. 12, 2002 |
| 6259796 |
Earpiece without impulse and high frequency noise |
Jul. 10, 2001 |
| 6163615 |
Circumaural ear cup audio seal for use in connection with a headset, ear defender, helmet and the like |
Dec. 19, 2000 |
| 6068079 |
Acoustic valve capable of selective and non-linear filtering of sound |
May. 30, 2000 |
| 5949897 |
Sound reproduction device with active noise compensation |
Sep. 7, 1999 |
| 5911314 |
Headset ear seal |
Jun. 15, 1999 |
| 5844998 |
Headphone apparatus |
Dec. 1, 1998 |
| 5396563 |
Earphone |
Mar. 7, 1995 |
| 5276740 |
Earphone device |
Jan. 4, 1994 |
| 5241971 |
Ear-protection cup for ear muffs or head-phones |
Sep. 7, 1993 |
| 5208868 |
Headphone overpressure and click reducing |
May. 4, 1993 |
| 5182774 |
Noise cancellation headset |
Jan. 26, 1993 |
| 5181252 |
High compliance headphone driving |
Jan. 19, 1993 |
| 5148887 |
Earcup assembly incorporating mechanical active noise reduction |
Sep. 22, 1992 |
| 5020163 |
Earseal for sound-attenuating earcup assembly |
Jun. 4, 1991 |
| 4989271 |
Headphone cushioning |
Feb. 5, 1991 |
| 4979586 |
Acoustically shielded motorcycle helmet speaker enclosure |
Dec. 25, 1990 |
| 4975967 |
Earplug for noise protected communication between the user of the earplug and surroundings |
Dec. 4, 1990 |
| 4972492 |
Earphone |
Nov. 20, 1990 |
| 4969534 |
Hearing aid employing a viscoelastic material to adhere components to the casing |
Nov. 13, 1990 |
| 4958697 |
Anatomically shaped earseals for headsets |
Sep. 25, 1990 |
| 4924502 |
Means for stabilizing sound pressure produced at the eardrum under an earpad |
May. 8, 1990 |
| 4922542 |
Headphone comfort |
May. 1, 1990 |
| 4856118 |
Headphone cushioning |
Aug. 15, 1989 |
| 4830138 |
Pressure ring for ear cover |
May. 16, 1989 |
| 4809811 |
Ear pad construction for earphones |
Mar. 7, 1989 |
| 4742887 |
Open-air type earphone |
May. 10, 1988 |
| 4674134 |
Earmuff having sealing ring including liquid and foam plastic layers |
Jun. 23, 1987 |
| 4669129 |
Earmuff apparatus for use with headsets |
Jun. 2, 1987 |
| 4658931 |
Evacuated plenum hearing protection |
Apr. 21, 1987 |
| 4644581 |
Headphone with sound pressure sensing means |
Feb. 17, 1987 |
| 4620605 |
Suspension for electro-acoustical transducers |
Nov. 4, 1986 |
| 4572323 |
Hearing protectors |
Feb. 25, 1986 |
| 4465159 |
Nonlinear ear protecting device |
Aug. 14, 1984 |
| 4459707 |
Ear protecting device |
Jul. 17, 1984 |
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