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Class Information
Number: 181/264
Name: Acoustics > Sound-modifying means > Muffler, fluid conducting type > With baffle or baffle structure
Description: Subject matter in which barriers or partitions cause the fluids to travel in a tortuous path.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7407036 |
Muffler for compact combustion engines |
Aug. 5, 2008 |
| 7389853 |
Muffler for an engine |
Jun. 24, 2008 |
| 7380637 |
Exhaust-gas muffler |
Jun. 3, 2008 |
| 7380638 |
Exhaust noise control for motorcycles |
Jun. 3, 2008 |
| 7377359 |
Device for modulating noise in a motor vehicle |
May. 27, 2008 |
| 7282185 |
Emission control apparatus |
Oct. 16, 2007 |
| 7243757 |
Exhaust muffler |
Jul. 17, 2007 |
| 7104359 |
Muffler having a baffle with angled plates |
Sep. 12, 2006 |
| 7073534 |
Silencer for perforated plate flow conditioner |
Jul. 11, 2006 |
| 6990804 |
Combination exhaust gas post treatment/muffler device in the exhaust gas section of an internal combustion engine |
Jan. 31, 2006 |
| 6902030 |
Sound muffling apparatus for air operated equipment |
Jun. 7, 2005 |
| 6889499 |
Internal combustion engine exhaust system |
May. 10, 2005 |
| 6832664 |
Clampless hose retainer mechanism |
Dec. 21, 2004 |
| 6832665 |
Exhaust gas muffler |
Dec. 21, 2004 |
| 6776257 |
Sound-attenuating muffler having reduced back pressure |
Aug. 17, 2004 |
| 6736238 |
Air intake silencer |
May. 18, 2004 |
| 6688424 |
Noise absorbing device and device for taking air into engine room of a construction machine |
Feb. 10, 2004 |
| 6688425 |
Induction system with low pass filter for turbo charger applications |
Feb. 10, 2004 |
| 6679742 |
Exhaust structure for a jet propulsion watercraft |
Jan. 20, 2004 |
| 6672425 |
Noise abatement module |
Jan. 6, 2004 |
| 6668973 |
Transverse partition for exhaust volume |
Dec. 30, 2003 |
| 6644436 |
Device for noise configuration in a motor vehicle |
Nov. 11, 2003 |
| 6637546 |
Carpet cleaning machine |
Oct. 28, 2003 |
| 6622482 |
Combined catalytic muffler |
Sep. 23, 2003 |
| 6622819 |
Sound attenuator for pneumatic exhaust |
Sep. 23, 2003 |
| 6609590 |
Exhaust system having angled baffle |
Aug. 26, 2003 |
| 6588545 |
Muffler for internal combustion engine |
Jul. 8, 2003 |
| 6571910 |
Method and apparatus for improved noise attenuation in a dissipative internal combustion engine exhaust muffler |
Jun. 3, 2003 |
| 6551155 |
Personal watercraft having an improved exhaust system |
Apr. 22, 2003 |
| 6533065 |
Noise silencer and method for use with an ultrasonic meter |
Mar. 18, 2003 |
| 6510921 |
Muffler/exhaust extractor |
Jan. 28, 2003 |
| 6506029 |
Gear pump |
Jan. 14, 2003 |
| 6488482 |
Integral compressor muffler |
Dec. 3, 2002 |
| 6485270 |
Air pump with noise silence arrangement |
Nov. 26, 2002 |
| 6415889 |
Stamped-formed muffler apparatus and assembly process |
Jul. 9, 2002 |
| 6415887 |
Refractive wave muffler |
Jul. 9, 2002 |
| 6382931 |
Compressor muffler |
May. 7, 2002 |
| 6374944 |
Silencer with internal rain diverter |
Apr. 23, 2002 |
| 6364054 |
High performance muffler |
Apr. 2, 2002 |
| 6312650 |
Silencer |
Nov. 6, 2001 |
| 6305493 |
Exhaust system for internal combustion engines |
Oct. 23, 2001 |
| 6286623 |
Sound-attenuating muffler for internal combustion engine |
Sep. 11, 2001 |
| 6283246 |
Silencer |
Sep. 4, 2001 |
| 6152258 |
Exhaust system with silencing and water separation capability |
Nov. 28, 2000 |
| 6135237 |
Stamp-formed muffler |
Oct. 24, 2000 |
| 6105717 |
Pipe section punning along a curve |
Aug. 22, 2000 |
| 6089347 |
Muffler with partition array |
Jul. 18, 2000 |
| 6050363 |
Muffler |
Apr. 18, 2000 |
| 6041890 |
Exhaust gas muffler for the combustion engine of a portable working tool |
Mar. 28, 2000 |
| 6035964 |
Gas turbine muffler with diffusor |
Mar. 14, 2000 |
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