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Class Information
Number: 181/240
Name: Acoustics > Sound-modifying means > Muffler, fluid conducting type > Manifold type
Description: Subject matter for collecting and conducting the fluids from single or multiple cylinders into a single exhaust pipe.










Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8602159 Compact muffler for small two-stroke internal combustion engines Dec. 10, 2013
8517143 Arrangement of a silencer on a combustion motor with improved coupling to the cylinder Aug. 27, 2013
8439157 Engine May. 14, 2013
8413760 Muffler attachment system Apr. 9, 2013
8397531 Apparatus and method for pulsation and sound reduction in an economized refrigeration system Mar. 19, 2013
8360200 Muffler Jan. 29, 2013
8356476 Diesel silencer capable of Tier 3 or Tier 4 operation Jan. 22, 2013
8336301 Exhaust gas treatment unit Dec. 25, 2012
8307944 Muffler Nov. 13, 2012
8251173 Muffler attachment system Aug. 28, 2012
8177022 Transmitted sound control apparatus May. 15, 2012
8172038 Silencer for a motor device May. 8, 2012
8146708 Muffler with integrated catalytic converter and polymeric muffler body Apr. 3, 2012
8132646 Exhaust gas muffler Mar. 13, 2012
8083026 Diffuser muffler Dec. 27, 2011
8028798 Exhaust pipe structure for saddle-ride type vehicle Oct. 4, 2011
7971681 Exhaust-gas muffler Jul. 5, 2011
7967106 Air induction sound modification system for internal combustion engine Jun. 28, 2011
7934375 Vehicle exhaust systems May. 3, 2011
7931119 Support structure for exhaust pipe Apr. 26, 2011
7896127 Muffler unit for general-purpose engine Mar. 1, 2011
7854296 Passive secondary air muffler Dec. 21, 2010
7775323 Silencer with fin outlet Aug. 17, 2010
7726443 Muffler and working machine Jun. 1, 2010
7621370 Sound increase apparatus Nov. 24, 2009
7617675 Catalyst chamber Nov. 17, 2009
7487633 Device for exhaust gas purification for spark-ignited engines Feb. 10, 2009
7407036 Muffler for compact combustion engines Aug. 5, 2008
7380637 Exhaust-gas muffler Jun. 3, 2008
7360518 Expandable manifold Apr. 22, 2008
7252177 Exhaust system for engine Aug. 7, 2007
7198017 Intake noise suppressor Apr. 3, 2007
7090048 Method and apparatus for exhaust sound attenuation on engines with cylinder deactivation Aug. 15, 2006
7073625 Exhaust gas muffler and flow director Jul. 11, 2006
6978605 Exhaust emission control system for engine Dec. 27, 2005
6966402 Acoustical heat shield Nov. 22, 2005
6955043 Muffler assembly Oct. 18, 2005
6938728 Method and apparatus for attaching a resonance chamber to an air induction component Sep. 6, 2005
6932189 Device for noise structuring in a motor vehicle Aug. 23, 2005
6910550 Muffler arrangement for an internal combustion engine Jun. 28, 2005
6832664 Clampless hose retainer mechanism Dec. 21, 2004
6799423 Adjustable exhaust system for internal combustion engine Oct. 5, 2004
6779628 Device for producing an overtone-rich sporty exhaust sound Aug. 24, 2004
6752239 Muffler arrangement structure Jun. 22, 2004
6705843 NVH and gas pulsation reduction in AC compressor Mar. 16, 2004
6702062 Exhaust system for automobile engine Mar. 9, 2004
6662900 Cross-exit exhaust system Dec. 16, 2003
6658326 Noise reduction system and method Dec. 2, 2003
6644436 Device for noise configuration in a motor vehicle Nov. 11, 2003
6467260 Gas flow headers for internal combustion engines Oct. 22, 2002

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