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Class Information
Number: 181/249
Name: Acoustics > Sound-modifying means > Muffler, fluid conducting type > Straight-through passage > Continuous conduit > With expansion chamber
Description: Subject matter having enlarged chambers intermediate the length of the through passage.










Sub-classes under this class:

Class Number Class Name Patents
181/251 And multi-passage 75
181/250 And side branch 171


Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8701824 Muffler for small-sized vehicle Apr. 22, 2014
8678038 Exhaust system, a saddle riding type vehicle having the same, and a method of manufacturing and mounting an exhaust pipe Mar. 25, 2014
8646260 Two-stroke lean burn gas engine with a silencer/catalytic converter Feb. 11, 2014
8622168 Motorcycle exhaust system structure including a resonator provided to an exhaust pipe Jan. 7, 2014
8607923 Exhaust apparatus of internal combustion engine Dec. 17, 2013
8561758 Exhaust apparatus of internal combustion engine Oct. 22, 2013
8550057 Integral rotor noise attenuators Oct. 8, 2013
8550122 Exhaust finisher retention operation Oct. 8, 2013
8485312 Exhaust pipe Jul. 16, 2013
8381870 Fluid flow controller Feb. 26, 2013
8191676 Resonator for a dual-flow exhaust system Jun. 5, 2012
8162103 Silencer for motor vehicle exhaust line Apr. 24, 2012
8136628 Exhaust system for motorcycle Mar. 20, 2012
8127540 Exhauster for motorcycle and motorcycle including exhauster Mar. 6, 2012
8109084 Exhaust device for motorcycle Feb. 7, 2012
8083025 Silencer provided on exhaust pipe of vehicle engine Dec. 27, 2011
8069660 System for recovering waste heat from exhaust Dec. 6, 2011
7997382 Exhaust device for straddle-type vehicle and straddle-type vehicle Aug. 16, 2011
7997383 Vehicle exhaust system Aug. 16, 2011
7958728 Device for turbocharging an internal combusting engine comprising a pulsation damping chamber Jun. 14, 2011
7942235 Exhaust system for an internal combustion engine May. 17, 2011
7942236 Exhaust device for straddle-type vehicle and straddle-type vehicle May. 17, 2011
7934583 Housings for flue gas units May. 3, 2011
7913489 Device for lowering tail pipe exhaust temperature Mar. 29, 2011
7878298 Fuel-cell exhaust system Feb. 1, 2011
7878300 Integrated modular exhaust system Feb. 1, 2011
7866442 Muffler and vehicle equipped with muffler Jan. 11, 2011
7845464 Noise abatement device for a pneumatic tool Dec. 7, 2010
7845465 Vehicular exhaust resonator with cooling feature Dec. 7, 2010
7819222 Device and method for attenuating energy along a conduit Oct. 26, 2010
7793757 Resonator with internal supplemental noise attenuation device Sep. 14, 2010
7690194 Two-stroke lean burn gas engine with a silencer/catalytic converter Apr. 6, 2010
7686131 Vehicle exhaust tip assembly Mar. 30, 2010
7677357 Muffler and vehicle equipped with muffler Mar. 16, 2010
7669693 Exhaust muffling device Mar. 2, 2010
7624841 Silencer Dec. 1, 2009
7624842 Exhaust system for an engine and motorcycle including the exhaust system Dec. 1, 2009
7584821 Adjustable helmholtz resonator Sep. 8, 2009
7549510 Vehicle exhaust system Jun. 23, 2009
7549509 Double throat pulsation dampener for a compressor Jun. 23, 2009
7543682 Sheet-metal-type part Jun. 9, 2009
7510050 Vehicle exhaust systems Mar. 31, 2009
7506722 Vehicle exhaust systems Mar. 24, 2009
7503427 Muffler Mar. 17, 2009
7487633 Device for exhaust gas purification for spark-ignited engines Feb. 10, 2009
7484590 Fuel cell system with muffler Feb. 3, 2009
7464543 Two-stroke lean burn gas engine with a silencer/catalytic converter Dec. 16, 2008
7464787 Motorcycle exhaust assembly and method of using same Dec. 16, 2008
7461506 Exhaust gas cooler Dec. 9, 2008
7448469 Silencer Nov. 11, 2008

1 2 3










 
 
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