Did You Know...
...that Charles Goodyear performed some of his experiments on rubber while in debtor's prison? He was there so often he referred to it as his "hotel". Chronically in debt because of poor business sense and ill health, Goodyear depended on the generosity of friends and family. Even after he unlocked the secret to vulcanizing rubber, he was unable to improve his financial situation. When he died, his estate was $200,000 in debt.
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| Number | Title | Issue Date |
| 8051949 | Vehicle exhaust muffler A vehicle muffler, which is structured in a coiled fashion, has a tube extending through the circumferential wall. This tube is welded to the circumferential wall and fastened by mechanical deformation to a support wall of an inner insert piece. ... | 11/08/2011 |
| 8028798 | Exhaust pipe structure for saddle-ride type vehicle An exhaust-pipe structure for a saddle-ride type vehicle includes expansion paths each having a capacity appropriate for the output capacity of a corresponding cylinder. A front exhaust pipe and a rear exhaust pipe extend from a front cylinder and a rear cylinder co... | 10/04/2011 |
| 7942235 | Exhaust system for an internal combustion engine Disclosed is an exhaust system (100) for an internal combustion engine, comprising a first exhaust train that is provided with a penetrable first muffler (120), especially a rear muffler, and at least one second exhaust train which encompasses a second... | 05/17/2011 |
| 7874401 | Exhaust muffler for exhaust system An exhaust muffler (1) is provided for an at least partly dual-flow exhaust system of an internal combustion engine, especially of a motor vehicle. The exhaust muffler has a housing (2), which encloses an interior space (3), with two exhaust pip... | 01/25/2011 |
| 7810610 | Exhaust device including elastically deformable annular member and vehicle with exhaust device A muffler for a vehicle, such as a scooter type motorcycle, comprises an inner tubular member and an outer tubular member. An inner surface of the outer tubular member faces an outer surface of the inner tubular member. A ring shaped or annular member is positioned ... | 10/12/2010 |
| 7571789 | Muffler for exhaust systems of vehicles The muffler comprises a tubular shell which is internally lined with a noise-deadening material and is closed at its ends by a front wall provided with an inlet connectable to receive exhaust gas, and by a rear wall. A first chamber and a second chamber, which are s... | 08/11/2009 |
| 7510051 | Switchable loud and quiet exhaust apparatus A switchable exhaust system apparatus. The switchable exhaust system apparatus is switchable between a quiet or normal mode and a loud mode when desired. ... | 03/31/2009 |
| 7426980 | Internal combustion engine exhaust system An exhaust system for an internal combustion engine having two banks of cylinders by which pulses of exhaust gas are alternately directed to a diverter subassembly. The diverter subassembly, which is located in the muffler, includes a perforated gas decelerator cham... | 09/23/2008 |
| 7416052 | Exhaust system of internal combustion engine In an exhaust system, exhaust manifolds are connected to two banks provided in a V-type engine of a vehicle, respectively, to which front pipes each having a catalytic converter are connected to the exhaust manifolds, respectively. A muffler is provided at an exhaus... | 08/26/2008 |
| 7380638 | Exhaust noise control for motorcycles A noise control apparatus for a motorcycle exhaust system. The apparatus includes at least one exhaust pipe assembly having a direct pass-through mode and an indirect mode wherein exhaust gases are optionally directed through noise attenuating means. The apparatus i... | 06/03/2008 |
| 7380635 | Interference-based exhaust noise attenuation An interference-based exhaust noise attenuation device and method for exhaust flow from an internal combustion engine that generates compressive waves in the exhaust flow. The device includes at least a direct path for the exhaust flow; a looped path for the exhaust... | 06/03/2008 |
| 7377359 | Device for modulating noise in a motor vehicle In a device for noise configuration in a motor vehicle which has an internal combustion engine with at least two gas conduits connected to different cylinders of the engine, the gas conduits are interconnected by means of a cross-flow section formed by a housing whi... | 05/27/2008 |
| 7364010 | Exhaust system for a motorcycle, and motorcycle including same A motorcycle, having both left and right mufflers, has an exhaust structure which enables an increase in the allowable margin through which the rear wheel is permitted to rise. A main exhaust pipe extends from an engine to one side of a shock absorber disposed on th... | 04/29/2008 |
| 7357221 | Exhaust gas muffler An exhaust gas muffler is provided for an internal combustion engine, especially for an internal combustion engine in a manually-guided implement such as a power saw, a cut-off machine, or the like. The muffler has a housing having an inlet for exhaust gases and an ... | 04/15/2008 |
| 7334402 | Exhaust system with catalytic converter and motorcycle using the same A catalytic converter-incorporated exhaust system is provided, which includes an exhaust tube through which exhaust gases emitted from an engine flow, and a muffler fluidly connected with a downstream end of the exhaust tube. This muffler includes a muffler casing h... | 02/26/2008 |
| 7287622 | Exhaust muffler The present specification discloses a muffler for attenuating exhaust noise from an internal combustion engine. The muffler includes a main chamber, an intermediate pipe, a diffuser chamber, a spark arrester, and an exhaust pipe. Exhaust gases from the engine enter ... | 10/30/2007 |
| 7243757 | Exhaust muffler An exhaust muffler (1) invention includes an entry chamber (9), a resonator chamber (15), and a baffle chamber (23) positioned in serial order between an exhaust gas inlet (3) that lets exhaust gas into the entry chamber and an exh... | 07/17/2007 |
| 7207258 | Weapon silencers and related systems Silencers are provided for a weapon having a combustion chamber and a barrel. The weapon is configured to launch a projectile with combustion gases generated in the combustion chamber. An exemplary silencer includes a proximal end and a distal end, the proximal end ... | 04/24/2007 |
| 7174992 | Muffler with secondary flow path A muffler has a main body, and an inner shell spaced radially inwardly of the main body by an annular volume therebetween. The inner shell has an internal volume radially inward of the annular volume. The muffler has primary and secondary parallel paths therethrough... | 02/13/2007 |
| 7159692 | Silencer A silencer that comprises a casing, one or more pipes or passages leading a flow of gas to the casing and a device for leading gas from the casing. The silencer further has at least one internal chamber, one or more flow inlets to the chamber and one or more flow ou... | 01/09/2007 |
| 7153651 | Flow-through optical assay devices providing laminar flow of fluid samples, and methods of construction thereof An optical assay device for the detection of an analyte of interest in a sample comprising a support containing channels, an optically functional layer positioned on the support such that the optically functional layer and the support allow for laminar flow of the s... | 12/26/2006 |
| 7032709 | Exhaust-gas muffler An exhaust-gas muffler includes a muffler housing (2) having an inlet opening (3) and an outlet (4). The exhaust-gas muffler is especially for the internal combustion engine in a portable handheld work apparatus. At least one attenuating space (... | 04/25/2006 |
| 7017707 | Herschel-Quincke tube for vehicle applications An HQ tube arrangement suitable for packaging within a vehicle may be designed by creating a mathematical model representing a tube arrangement having a first passageway and a second passageway fluidly connected to the first passageway at first and second junctions.... | 03/28/2006 |
| 7004283 | Multiple-chambered exhaust muffler An exhaust gas muffler of multi-chamber construction includes an outer housing having an upper and lower half shell, an inner shell, and an inner exhaust gas duct through the exhaust gas muffler. The inner exhaust gas duct has at lease one curved outlet pipe that ha... | 02/28/2006 |
| 6990804 | Combination exhaust gas post treatment/muffler device in the exhaust gas section of an internal combustion engine A combination exhaust gas post treatment/muffler device in the exhaust gas section of an internal combustion engine is provided. A special platinum-coated preliminary oxidation catalytic converter is combined with at least one particle separator, which is exactly co... | 01/31/2006 |
| 6968922 | Exhaust apparatus for vehicle An exhaust apparatus for a vehicle includes a spark arrester having a tubular spark arrester body assembled on a rear portion of a muffler connected to an exhaust pipe. A tail pipe is inserted in the spark arrester body and is mounted on the spark arrester such that... | 11/29/2005 |
| 6915877 | Muffler device A muffler device, in one preferred embodiment, having four barriers therein. Each barrier functions to form an within which the exhaust stream can be partitioned and redirected. Eventually, the exhaust streams are once again recombined and expelled from the muffler.... | 07/12/2005 |
| 6880670 | Muffler for suction system exhaust air used with an automatic cutting machine A noise reduction system for significantly reducing the noise generated by an air turbine used to create suction for automatic cutting tables. The system employs one or more baffles mounted within a closed main housing including noise reduction foam and an exhaust h... | 04/19/2005 |
| 6868939 | Exhaust silencer system An improved exhaust system for an internal combustion engine generally comprises two expanding megaphones, separated by a dual core annular flow silencing section. The two or split megaphone design facilitates broadening of the time of the negative pressure wave to ... | 03/22/2005 |
| 6755279 | Controllable muffler system for internal combustion engine A controllable muffler system is sued for use with an engine that produces a power by burning fuel. The system comprises a first passage section extending from the engine for having an exhaust gas of the engine flow therethrough. The first passage section has a cata... | 06/29/2004 |
| 6715583 | Silencer and power enhancement environmental device A device to muffle and purify the exhaust gases from an internal combustion engine. A housing is divided into several chambers with the exhaust gases passing from one chamber to another, each successive chamber diverting the gas flow into an opposing direction. The ... | 04/06/2004 |
| 6681889 | Exhaust muffler for a fuel-operated heating device An exhaust muffler for a fuel-operated heating device has upper and lower housing half shells, an exhaust gas through-duct and absorption and reflection chambers. The exhaust muffler is connectable to an exhaust pipe of the heating device. The exhaust gas... | 01/27/2004 |
| 6619426 | Exhaust silencer An exhaust silencer allows for elongation of an inner cylinder relative to an outer cylinder. The exhaust silencer is assembled and constructed in such a way as to simplify the assembly process. A rear end portion of the outer cylinder is blocked with a s... | 09/16/2003 |
| 6530452 | Reactive silencer for industrial air channels and its use A reactive silencer intended for industrial supply air or exhaust air channels has a sound attenuator chamber (10), to which is fitted a partition wall (12) dividing the sound attenuator chamber into a first and second chamber part (14, 16). The partition... | 03/11/2003 |
| 6499562 | Muffler with variable sound-absorbing characteristics A muffler for pulsating gases, especially exhaust gases of internal combustion engines, comprises a housing into which an inlet conduit enters, from which at least on outlet conduit exits and which is divided by at least one partition wall into at least t... | 12/31/2002 |
| 6467570 | Spark arrester with spark filter An exhaust processor includes a housing formed to include an interior region and a partition or first spark arrester that partitions the interior region into chambers and includes a wool filter formed to include an opening. The wool filter is positioned t... | 10/22/2002 |
| 6457552 | Methods and apparatus for low back pressure muffling of internal combustion engines Systems and apparatus for muffling sounds produced by an internal combustion engine, and optionally catalytically degrading pollutants within waste exhaust gases. The systems and apparatus utilize a bed of particles within a muffling chamber. The gases ar... | 10/01/2002 |
| 6435302 | Motor vehicle muffler A motor vehicle muffler having a muffler loop installed in a casing in the exhaust pipe of a motor vehicle, the muffler loop formed of three muffler tubes and two connecting tubes, the muffler tubes being arranged at different elevations in the casing and... | 08/20/2002 |
| 6241044 | Exhaust silencer and communicating pipe thereof More than two damping chambers 2A to 2C), a communicating pipe (6) for intercommunicating the damping chambers (2A, 2B) and another communicating pipe (7) for intercommunicating the damping chambers (2B, 2C) are provided. Both ends of the communicating pi... | 06/05/2001 |
| 6170528 | Assembly of orifice chambers progressively reducing operating pressure for large gas flows Disclosed is an improved assembly of orifice chambers for reducing pressure of large gas flows effective to reduce noise of the gas flows and wear on orifice chambers by progressive pressure drops in the gas flows through successive orifice plates which a... | 01/09/2001 |
