| |
 |
|
Class Information
Number: 181/256
Name: Acoustics > Sound-modifying means > Muffler, fluid conducting type > With sound absorbing material
Description: Subject matter having acoustic wave attenuating material positioned to be contacted by the moving fluid, as by surrounding or being positioned adjacent to and communicating with the fluid passage.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7431125 |
Composite muffler for use with airborne auxiliary power unit |
Oct. 7, 2008 |
| 7424931 |
Muffler for a motorcycle |
Sep. 16, 2008 |
| 7416050 |
Gas expansion silencer |
Aug. 26, 2008 |
| 7407037 |
Exhaust silencer for internal combustion engine |
Aug. 5, 2008 |
| 7383919 |
Rotatable propeller driven engine exhaust system |
Jun. 10, 2008 |
| 7380397 |
Automobile exhaust pipe assembly |
Jun. 3, 2008 |
| 7380639 |
Backpressure reducing exhaust system with stationary blade structure |
Jun. 3, 2008 |
| 7364011 |
Attenuating power booster |
Apr. 29, 2008 |
| 7350620 |
Compact silencer |
Apr. 1, 2008 |
| 7281605 |
Mufflers with enhanced acoustic performance at low and moderate frequencies |
Oct. 16, 2007 |
| 7278514 |
Acoustic noise filter |
Oct. 9, 2007 |
| 7273129 |
Muffler with internal heat shield |
Sep. 25, 2007 |
| 7261181 |
Detatchable muffler apparatus for pneumatic tools |
Aug. 28, 2007 |
| 7216739 |
Muffler for pneumatic hand tool |
May. 15, 2007 |
| 7185678 |
Orifice plate diffuser |
Mar. 6, 2007 |
| 7165648 |
Method for containing an acoustical material within an assembly |
Jan. 23, 2007 |
| 7141101 |
Filter assembly with noise attenuation |
Nov. 28, 2006 |
| 7100737 |
Muffler for noise reduction |
Sep. 5, 2006 |
| 7017706 |
Turbine noise absorber |
Mar. 28, 2006 |
| 7011180 |
System for filtering ultrasonic noise within a fluid flow system |
Mar. 14, 2006 |
| 7004283 |
Multiple-chambered exhaust muffler |
Feb. 28, 2006 |
| 6935460 |
Noise muffler for oxygen concentrator |
Aug. 30, 2005 |
| 6920959 |
Inlet and outlet duct units for air supply fan |
Jul. 26, 2005 |
| 6899198 |
Compressed air muffler |
May. 31, 2005 |
| 6900145 |
Trim panel insulator for a vehicle |
May. 31, 2005 |
| 6880670 |
Muffler for suction system exhaust air used with an automatic cutting machine |
Apr. 19, 2005 |
| 6868939 |
Exhaust silencer system |
Mar. 22, 2005 |
| 6857502 |
Engine muffler and method of manufacturing the same |
Feb. 22, 2005 |
| 6851514 |
Outlet silencer and heat recovery structures for gas turbine |
Feb. 8, 2005 |
| 6848476 |
Tuning cable |
Feb. 1, 2005 |
| 6840348 |
Exhaust muffler |
Jan. 11, 2005 |
| 6799657 |
Absorptive/reactive muffler for variable speed compressors |
Oct. 5, 2004 |
| 6789644 |
Engine muffler |
Sep. 14, 2004 |
| 6722467 |
Noise attenuator for an air supply system of an internal combustion engine |
Apr. 20, 2004 |
| 6702880 |
Inlet silencer/filter for an oxygen concentrator |
Mar. 9, 2004 |
| 6681889 |
Exhaust muffler for a fuel-operated heating device |
Jan. 27, 2004 |
| 6672424 |
Acoustically treated turbomachine multi-duct exhaust device |
Jan. 6, 2004 |
| 6668972 |
Bumper/muffler assembly |
Dec. 30, 2003 |
| 6668971 |
Pneumatic hand tool exhaust muffler having inner and outer tubes |
Dec. 30, 2003 |
| 6629580 |
Perforated end pipe of silencer unit |
Oct. 7, 2003 |
| 6607052 |
Muffler shell filling process and muffler filled with fibrous material |
Aug. 19, 2003 |
| 6585078 |
Muffler insert |
Jul. 1, 2003 |
| 6581723 |
Muffler shell filling process, muffler filled with fibrous material and vacuum filling device |
Jun. 24, 2003 |
| 6558137 |
Reciprocating piston compressor having improved noise attenuation |
May. 6, 2003 |
| 6543576 |
Multiple layer fiber filled sound absorber and a method of manufacturing the same |
Apr. 8, 2003 |
| 6520286 |
Silencer and a method of operating a vehicle |
Feb. 18, 2003 |
| 6467571 |
Sound absorbing material, muffler using the sound absorbing material, and method for forming sound absorbing layer thereof |
Oct. 22, 2002 |
| 6467569 |
Spark arresting muffler with exhaust path parallel to muffler centerline |
Oct. 22, 2002 |
| 6457550 |
Weatherproof sound attenuating device |
Oct. 1, 2002 |
| 6446750 |
Process for filling a muffler shell with fibrous material |
Sep. 10, 2002 |
|
|
|
