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Class Information
Number: 181/231
Name: Acoustics > Sound-modifying means > Muffler, fluid conducting type > With solid particle separator (e.g., spark arrestor, vacuum cleaner, etc.)
Description: Subject matter wherein there is provided additional means which at the same time remove from the moving fluids (exhaust) all entrained dirt particles, sparks, and the like.










Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8585372 Motor/pump assembly Nov. 19, 2013
8522828 Insulated double-walled exhaust system component and method of making the same Sep. 3, 2013
8360200 Muffler Jan. 29, 2013
8336301 Exhaust gas treatment unit Dec. 25, 2012
8307944 Muffler Nov. 13, 2012
8210309 Channeling gas flow tube Jul. 3, 2012
8132646 Exhaust gas muffler Mar. 13, 2012
8091683 Motorcycle Jan. 10, 2012
7879142 Cyclone dust collector and vacuum cleaner Feb. 1, 2011
7854296 Passive secondary air muffler Dec. 21, 2010
7788763 Fan motor noise reduction device and vacuum cleaner with the same Sep. 7, 2010
7775323 Silencer with fin outlet Aug. 17, 2010
7753979 Filter assembly with adjustable inlet opening Jul. 13, 2010
7726443 Muffler and working machine Jun. 1, 2010
7601209 Multiple flow filter with acoustic silencing Oct. 13, 2009
7601191 Apparatus for venting a transmission case Oct. 13, 2009
7537083 Silencer containing one or more porous bodies May. 26, 2009
7530428 Exhaust deflector for a muffler May. 12, 2009
7530427 Exhaust deflector for a muffler May. 12, 2009
7513924 Cyclonic separating apparatus Apr. 7, 2009
7487633 Device for exhaust gas purification for spark-ignited engines Feb. 10, 2009
7357221 Exhaust gas muffler Apr. 15, 2008
7337876 Suction apparatus with noise reduction means Mar. 4, 2008
7296657 Engine exhaust muffler with exhaust emission control function Nov. 20, 2007
7293629 Exhaust apparatus for small-sized engine Nov. 13, 2007
7287622 Exhaust muffler Oct. 30, 2007
7228935 Attachment pin for an exhaust-gas muffler Jun. 12, 2007
7191849 Pneumatic tool Mar. 20, 2007
7191868 Combined silencer and spark arrester Mar. 20, 2007
7174991 Muffler for internal combustion engine Feb. 13, 2007
7141101 Filter assembly with noise attenuation Nov. 28, 2006
7127884 Muffler with an integrated catalytic converter Oct. 31, 2006
7062908 Construction for exhaust emission control Jun. 20, 2006
6991043 Pneumatic tool Jan. 31, 2006
6978605 Exhaust emission control system for engine Dec. 27, 2005
6968922 Exhaust apparatus for vehicle Nov. 29, 2005
6941751 Exhaust muffler and muffler system for use with an internal combustion engine Sep. 13, 2005
6932188 Silencer for vacuum cleaner Aug. 23, 2005
6868938 Noise-reducing engine enclosure Mar. 22, 2005
6715582 Suction muffler Apr. 6, 2004
6702880 Inlet silencer/filter for an oxygen concentrator Mar. 9, 2004
6540046 Compact economical spark arrestor and muffler Apr. 1, 2003
6467570 Spark arrester with spark filter Oct. 22, 2002
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
6393835 Exhaust muffler comprising a catalytic converter May. 28, 2002
6170604 Exhaust gas muffler Jan. 9, 2001
6164066 Muffler for internal combustion engine Dec. 26, 2000
6094774 Silencer for a suction cleaner Aug. 1, 2000
6048386 Integrated resonator and filter apparatus Apr. 11, 2000

1 2 3










 
 
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