Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Browse by Category: Main > Communications
Class Information
Number: 181/239
Name: Acoustics > Sound-modifying means > Muffler, fluid conducting type > Multiple distinct inlets and/or outlets > Outlets
Description: Subject matter comprising a plurality of fluid outlets or discharge ports.










Patents under this class:
1 2

Patent Number Title Of Patent Date Issued
8684131 Dual muffler Apr. 1, 2014
8579077 Horizontally installed muffler having sporty tone Nov. 12, 2013
8544600 Exhaust device for internal combustion engine Oct. 1, 2013
8528693 Muffler with dual exhaust gas discharge pipe for vehicle Sep. 10, 2013
8434588 Exhaust device for vehicle internal combustion engine May. 7, 2013
8196702 Muffler for vehicle Jun. 12, 2012
8191676 Resonator for a dual-flow exhaust system Jun. 5, 2012
8181732 Y splitter for exhaust systems May. 22, 2012
8172039 Muffler for vehicle May. 8, 2012
8056327 Micro-venturi exhaust cooling device Nov. 15, 2011
8028798 Exhaust pipe structure for saddle-ride type vehicle Oct. 4, 2011
8006801 Noise damper for a compressed air device Aug. 30, 2011
7971432 Flow diffuser for exhaust pipe Jul. 5, 2011
7942240 Silencer for internal combustion engine May. 17, 2011
7934583 Housings for flue gas units May. 3, 2011
7878300 Integrated modular exhaust system Feb. 1, 2011
7789195 Muffler of internal combustion engine Sep. 7, 2010
7762374 Turbine engine diffusing exhaust muffler Jul. 27, 2010
7703573 Ported aerodynamic exhaust tailpipe Apr. 27, 2010
7681690 Noise abatement device for a pneumatic tool Mar. 23, 2010
7571789 Muffler for exhaust systems of vehicles Aug. 11, 2009
7562741 Rear muffler assembly Jul. 21, 2009
7377359 Device for modulating noise in a motor vehicle May. 27, 2008
7040451 Automotive exhaust silencer system with variable damping characteristics May. 9, 2006
7004283 Multiple-chambered exhaust muffler Feb. 28, 2006
6959782 Tuned exhaust system for small engines Nov. 1, 2005
6796402 Muffler having isolated dual flow baffle structure Sep. 28, 2004
6576028 Noise abatement device and separation aid for use in fluid flow systems Jun. 10, 2003
6470998 Modular muffler with end plate adaptors and spark arresters Oct. 29, 2002
6431311 Muffler with interchangeable outlet tips Aug. 13, 2002
6382349 High-performance muffler May. 7, 2002
6382348 Twin muffler May. 7, 2002
6230488 Exhaust cooling system for vehicles May. 15, 2001
6152258 Exhaust system with silencing and water separation capability Nov. 28, 2000
6141958 Exhaust cooling system for vehicles Nov. 7, 2000
6085863 Exhaustion pipe structure Jul. 11, 2000
6041890 Exhaust gas muffler for the combustion engine of a portable working tool Mar. 28, 2000
5773770 Cross flow path exhaust muffler Jun. 30, 1998
5731556 Muffler for pneumatic device Mar. 24, 1998
5500494 System for modifying operation of pneumatic tool Mar. 19, 1996
5388408 Exhaust system for internal combustion engines Feb. 14, 1995
5329074 Marine engine exhaust muffler Jul. 12, 1994
5315075 Exhaust gas muffler for an internal combustion engine May. 24, 1994
5214253 Automotive exhaust system May. 25, 1993
5183130 Muffler device for motorcycle Feb. 2, 1993
5123501 In-line constricted sound-attenuating system Jun. 23, 1992
5097924 Muffler for a compressed air driven motor Mar. 24, 1992
5046935 Compressor with reduced vibrations Sep. 10, 1991
5014817 Engine exhaust apparatus and method May. 14, 1991
4977977 Marine engine external exhaust noise suppressor with swim platform Dec. 18, 1990

1 2










 
 
  Recently Added Patents
Wireless communication power control
Supporting multiple channels of a single interface
Preventative traffic congestion social networking improvement system within a community
Projection screen and projection system having the same
Use of LPA for encouraging pregnancy, and fertility agent
Materials and methods for synthesis of a flavor and aroma volatile in plants
Switching element for a valve train of an internal combustion engine
  Randomly Featured Patents
International authorization system
High voltage and high energy storage device and a pulse generator including the application thereof
PRO217 polypeptides
Transaction-based system and method for abstraction of hardware designs
Factor IX production in transgenic non-human mammals and factor IX DNA sequences with modified splice sites
Bottle
Printing apparatus, printing system, and control method for the same system
Apparatus and method for stunning poultry
Motorcycle tire
Method of manufacturing a semiconductor device and a support plate with a flange for a semiconductor device