| |
 |
|
Class Information
Number: 181/267
Name: Acoustics > Sound-modifying means > Muffler, fluid conducting type > With baffle or baffle structure > Coaxial foraminous walls
Description: Subject matter in which are provided a plurality of coaxial cylindrical chambers having fluid pervious walls through which the fluid flows in a radial direction into the atmosphere.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7445083 |
Automotive muffler |
Nov. 4, 2008 |
| 6840348 |
Exhaust muffler |
Jan. 11, 2005 |
| 6736238 |
Air intake silencer |
May. 18, 2004 |
| 6672425 |
Noise abatement module |
Jan. 6, 2004 |
| 6533065 |
Noise silencer and method for use with an ultrasonic meter |
Mar. 18, 2003 |
| 6510921 |
Muffler/exhaust extractor |
Jan. 28, 2003 |
| 6467570 |
Spark arrester with spark filter |
Oct. 22, 2002 |
| 6415887 |
Refractive wave muffler |
Jul. 9, 2002 |
| 6199658 |
Multi-Fold side branch muffler |
Mar. 13, 2001 |
| 5971097 |
Muffler for motor vehicles |
Oct. 26, 1999 |
| 5962821 |
Internal combustion engine noise reduction apparatus |
Oct. 5, 1999 |
| 5957553 |
Audiovisual equipment and casing thereof and method of producing the same |
Sep. 28, 1999 |
| 5952625 |
Multi-fold side branch muffler |
Sep. 14, 1999 |
| 5661272 |
Engine noise reduction apparatus |
Aug. 26, 1997 |
| 5399817 |
Muffler |
Mar. 21, 1995 |
| 5371331 |
Modular muffler for motor vehicles |
Dec. 6, 1994 |
| 5350888 |
Broad band low frequency passive muffler |
Sep. 27, 1994 |
| 5274201 |
Noise muffler for an air blower |
Dec. 28, 1993 |
| 5266755 |
Car silencer for absorbing sound and exhaust pollutants |
Nov. 30, 1993 |
| 5253603 |
Underwater vehicle muffler |
Oct. 19, 1993 |
| 5227593 |
Muffler assembly for engine |
Jul. 13, 1993 |
| 5170020 |
Rainproof exhaust pipe |
Dec. 8, 1992 |
| 5151254 |
Exhaust gas cleaning device for internal combustion engine |
Sep. 29, 1992 |
| 4877084 |
Gas well discharge velocity dissipator |
Oct. 31, 1989 |
| 4751980 |
Sound attenuation apparatus |
Jun. 21, 1988 |
| 4617963 |
Control valve with anticavitation trim |
Oct. 21, 1986 |
| 4595073 |
Plug-type muffler section |
Jun. 17, 1986 |
| 4367807 |
Sound absorber for compressed-air operated apparatuses, in particular compressed air vibrators |
Jan. 11, 1983 |
| 4318720 |
Exhaust filter muffler |
Mar. 9, 1982 |
| 4241805 |
High pressure gas vent noise control apparatus and method |
Dec. 30, 1980 |
| 4184564 |
Combination muffler and air filter |
Jan. 22, 1980 |
| 4136757 |
Absorption muffler construction |
Jan. 30, 1979 |
| 4127183 |
Silencer device |
Nov. 28, 1978 |
| 4082160 |
Silencer for exhausting gas streams |
Apr. 4, 1978 |
| 3957133 |
Muffler |
May. 18, 1976 |
|
|
|
