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Class Information
Number: 181/227
Name: Acoustics > Sound-modifying means > Muffler, fluid conducting type > Pipe-muffler (e.g., tail pipe type)
Description: Subject matter wherein the fluid conducting device is comprised of a conduit with sound attenuating chambers along the length thereof.










Patents under this class:
1 2 3 4 5

Patent Number Title Of Patent Date Issued
8701823 Exhaust system for motorcycle Apr. 22, 2014
8678132 Quiet muffler Mar. 25, 2014
8672090 Exhaust component with vibration isolated pipe Mar. 18, 2014
8651231 Muffler tube with folded end tabs Feb. 18, 2014
8646572 Exhaust muffler Feb. 11, 2014
8640821 Exhaust system of engine Feb. 4, 2014
8622168 Motorcycle exhaust system structure including a resonator provided to an exhaust pipe Jan. 7, 2014
8622167 Component for motor vehicles and method for its production Jan. 7, 2014
8607923 Exhaust apparatus of internal combustion engine Dec. 17, 2013
8602158 Muffler system with protector for small-sized vehicle Dec. 10, 2013
8602157 Q4 muffler assembly Dec. 10, 2013
8596050 Sound attenuating heat exchanger for an internal combustion engine Dec. 3, 2013
8561758 Exhaust apparatus of internal combustion engine Oct. 22, 2013
8550122 Exhaust finisher retention operation Oct. 8, 2013
8511428 Noise attenuator and vehicle air intake duct provided therewith Aug. 20, 2013
8511427 Blower arrangement Aug. 20, 2013
8490745 Exhaust system component Jul. 23, 2013
8459408 Radiated sound reducing structure Jun. 11, 2013
8453791 Exhaust pipe part and exhaust apparatus for internal combustion engine Jun. 4, 2013
8443932 Working machine May. 21, 2013
8443933 Tubular acoustic insulating element May. 21, 2013
8439159 Exhaust muffler for internal combustion engines May. 14, 2013
8439156 Muffler with controlled pressure release May. 14, 2013
8424635 Firearm suppressor with relationally-rotated spacers disposed between baffles Apr. 23, 2013
8413760 Muffler attachment system Apr. 9, 2013
8381871 Compact low frequency resonator Feb. 26, 2013
8356690 Exhaust apparatus for an internal combustion engine Jan. 22, 2013
8353385 Decorative end-cap for motor vehicle exhaust system Jan. 15, 2013
8322479 Covering for motorcycle exhaust tube Dec. 4, 2012
8322134 Sliding fit, pipe arrangement and exhaust gas treatment device Dec. 4, 2012
8312961 Soot preventing type tail trim Nov. 20, 2012
8312962 Sound absorber having helical fixtures Nov. 20, 2012
8307944 Muffler Nov. 13, 2012
8292026 Silencer Oct. 23, 2012
8251173 Muffler attachment system Aug. 28, 2012
8220587 Silencer cover for saddle-ride type vehicle Jul. 17, 2012
8220253 Exhaust gas aftertreatment device for an internal combustion engine Jul. 17, 2012
8215447 Exhaust device of vehicle and straddle-type four-wheeled vehicle provided with the same Jul. 10, 2012
8210134 Chain saw Jul. 3, 2012
8210309 Channeling gas flow tube Jul. 3, 2012
8205715 Muffler combination Jun. 26, 2012
8205713 Vehicle silencer Jun. 26, 2012
8181737 Condensed water discharge apparatus of muffler May. 22, 2012
8172038 Silencer for a motor device May. 8, 2012
8162101 Ram intake unit having a sound absorbing structure Apr. 24, 2012
8151932 Muffler device for motorcycle Apr. 10, 2012
8136629 Silencer/muffler Mar. 20, 2012
8127887 Vehicle including silencer Mar. 6, 2012
8091683 Motorcycle Jan. 10, 2012
8056673 Sound dampening and wear protecting flapper configuration for marine exhaust system Nov. 15, 2011

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