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Class Information
Number: 181/230
Name: Acoustics > Sound-modifying means > Muffler, fluid conducting type > Pneumatic type motor (e.g., air hammer, etc.)
Description: Subject matter wherein the fluid conducting attenuating device is mounted on the exhaust end of a compressed air or vacuum actuated motor (i.e., air hammer, tool, etc.).










Patents under this class:
1 2 3 4

Patent Number Title Of Patent Date Issued
8596510 Pneumatic nailing machine with a winding air channel for exhaust Dec. 3, 2013
8434589 Obstruction device for reducing noise emitted from a blower May. 7, 2013
8215448 Sound damper for vehicle compressed air systems Jul. 10, 2012
8215449 Muffler system for noise abatement and ice control Jul. 10, 2012
8191675 Silencer Jun. 5, 2012
8177023 Sound dampening housing for rock drill May. 15, 2012
8172038 Silencer for a motor device May. 8, 2012
8141679 Absorptive muffler suspension Mar. 27, 2012
8047327 Muffler for pneumatic handheld tool Nov. 1, 2011
8006801 Noise damper for a compressed air device Aug. 30, 2011
7971681 Exhaust-gas muffler Jul. 5, 2011
7942234 Noise suppressor, electronic apparatus, and noise suppression characteristic control method May. 17, 2011
7845464 Noise abatement device for a pneumatic tool Dec. 7, 2010
7823692 Muffler for engines in oilfield applications Nov. 2, 2010
7806230 Absorptive muffler suspension Oct. 5, 2010
7753167 Silencer Jul. 13, 2010
7735603 Noise reducing device for a pneumatic tool Jun. 15, 2010
7681690 Noise abatement device for a pneumatic tool Mar. 23, 2010
7631725 Exhaust system Dec. 15, 2009
7549509 Double throat pulsation dampener for a compressor Jun. 23, 2009
7389853 Muffler for an engine Jun. 24, 2008
7377954 Performance air filtration cartridge May. 27, 2008
7357221 Exhaust gas muffler Apr. 15, 2008
7341173 Exhaust gas diffuser and filter system for a pneumatic nail gun Mar. 11, 2008
7261181 Detatchable muffler apparatus for pneumatic tools Aug. 28, 2007
7216739 Muffler for pneumatic hand tool May. 15, 2007
7191849 Pneumatic tool Mar. 20, 2007
6991043 Pneumatic tool Jan. 31, 2006
6935460 Noise muffler for oxygen concentrator Aug. 30, 2005
6935459 Resonating device for a pneumatic surgical instrument Aug. 30, 2005
6926117 Muffler for pneumatic hand tool Aug. 9, 2005
6918526 Muffler for staple guns Jul. 19, 2005
6899198 Compressed air muffler May. 31, 2005
6751952 Muffling structure for pneumatic tool Jun. 22, 2004
6739426 Low-noise pressure reduction system May. 25, 2004
6722467 Noise attenuator for an air supply system of an internal combustion engine Apr. 20, 2004
6668971 Pneumatic hand tool exhaust muffler having inner and outer tubes Dec. 30, 2003
6626648 Apparatus for noise depreciating in hermetic compressor Sep. 30, 2003
6622819 Sound attenuator for pneumatic exhaust Sep. 23, 2003
6604604 Catalytic muffler and method Aug. 12, 2003
6520289 Intake silencer for sealed refrigerant compressor Feb. 18, 2003
6467569 Spark arresting muffler with exhaust path parallel to muffler centerline Oct. 22, 2002
6422338 Exhaust gas muffler for internal combustion engines Jul. 23, 2002
6341662 Muffler with catalytic converter Jan. 29, 2002
6340069 Sound elimination structure for air pump Jan. 22, 2002
6305493 Exhaust system for internal combustion engines Oct. 23, 2001
6298878 Ball cock for railway vehicle Oct. 9, 2001
6209678 Pneumatic hand tool exhaust muffler Apr. 3, 2001
6202785 Muffler with acoustic absorption insert for limited clearance pneumatic device applications Mar. 20, 2001
6196331 Air supply and exhaust system for pneumatic tool Mar. 6, 2001

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