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Class Information
Number: 173/DIG.2
Name: Tool driving or impacting > Sound muffling
Description:










Patents under this class:
1 2

Patent Number Title Of Patent Date Issued
8342264 Device for reducing drilling noise and related methods Jan. 1, 2013
8191675 Silencer Jun. 5, 2012
8177023 Sound dampening housing for rock drill May. 15, 2012
8047327 Muffler for pneumatic handheld tool Nov. 1, 2011
7845464 Noise abatement device for a pneumatic tool Dec. 7, 2010
7730973 Housing arrangement for a drill rig Jun. 8, 2010
7410084 Multiple-impact adapter for a hammer tool Aug. 12, 2008
7398836 Pneumatic power tool with adjustable exhaust air outlet detector Jul. 15, 2008
7341173 Exhaust gas diffuser and filter system for a pneumatic nail gun Mar. 11, 2008
7308950 Drilling and/or hammering tool Dec. 18, 2007
7293629 Exhaust apparatus for small-sized engine Nov. 13, 2007
7228935 Attachment pin for an exhaust-gas muffler Jun. 12, 2007
7216739 Muffler for pneumatic hand tool May. 15, 2007
7191849 Pneumatic tool Mar. 20, 2007
7108079 Electric power tool Sep. 19, 2006
7013984 Powered tool Mar. 21, 2006
6991043 Pneumatic tool Jan. 31, 2006
6923272 Pneumatic power tool with exhaust air outlet deflector Aug. 2, 2005
6918526 Muffler for staple guns Jul. 19, 2005
6776243 Carrying handle for a percussion power tool Aug. 17, 2004
6776245 Electrical hand-held power tool with an electropneumatic percussion mechanism Aug. 17, 2004
6751952 Muffling structure for pneumatic tool Jun. 22, 2004
6655569 Power actuated tool and shroud for use with the tool Dec. 2, 2003
6543549 Electrically driven hand-held tool Apr. 8, 2003
6530436 Pneumatic tool with muffler bypass mechanism Mar. 11, 2003
6427782 Noise suppression drilling system Aug. 6, 2002
6338389 Air outlet regulating mechanism for pneumatic tool Jan. 15, 2002
6199656 Casing for noise attenuation in a rock drilling rig Mar. 13, 2001
6196331 Air supply and exhaust system for pneumatic tool Mar. 6, 2001
6173500 Sealing plug as part of a rubber boot Jan. 16, 2001
6059162 Exhaust baffle and spring assisted reset and dampener for powder actuated tool May. 9, 2000
6041890 Exhaust gas muffler for the combustion engine of a portable working tool Mar. 28, 2000
5992540 Air ratchet hand tool with thermoplastic jacket Nov. 30, 1999
5944119 Grip structure for a pneumatic tool Aug. 31, 1999
5944118 Pneumatic impact breaker Aug. 31, 1999
5927584 Pneumatic fastener driving tool having air exhaust arrangement Jul. 27, 1999
5909016 Pneumatic hand tool exhaust muffler Jun. 1, 1999
5881822 Pneumatic tool and vibration isolator therefor Mar. 16, 1999
5878823 Hydraulic breaking hammer Mar. 9, 1999
5657919 Modular fastener driving tool with noise reducing structure Aug. 19, 1997
5453577 Pneumatic tool and vibration isolator mounts therefor Sep. 26, 1995
5450911 Safety arrangement for driving tools Sep. 19, 1995
5419404 Hydraulic impact hammer May. 30, 1995
5418339 Pneumatic tool having noise reducing muffling structure May. 23, 1995
5228523 Pneumatic power tool Jul. 20, 1993
5137096 Dust boot and protective shroud for impact hammer Aug. 11, 1992
5104264 System for driving anchors in the ground Apr. 14, 1992
5088564 Method of and apparatus for driving piles Feb. 18, 1992
5022469 Exhaust means for pneumatic power tool Jun. 11, 1991
5020607 Lug-removing pneumatic impact-gun air blast-deflector Jun. 4, 1991

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