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| Number | Title | Issue Date |
| 8151932 | Muffler device for motorcycle An exhaust outlet 34 is formed at the center of a rear end wall 46 of a tail cap 21 closing a rear end opening of a muffler body 20, and a tail pipe 30 is connected at its rear end to the exhaust outlet 34. The exhaust outle... | 04/10/2012 |
| 7946380 | Motorcycle and muffler structure A motorcycle has a muffler 40, a muffler cover 50 for covering a part of a side surface (outer peripheral surface) of the muffler 40 and an end cap 60 for covering the muffler 40 from a rear side thereof. The end cap 60 is s... | 05/24/2011 |
| 7878298 | Fuel-cell exhaust system One embodiment of the invention includes a product including a fuel-cell exhaust diffuser; an air funnel; and at least two exhaust tubes attached to the diffuser. ... | 02/01/2011 |
| 7779961 | Exhaust gas diffuser The diffuser can be used at an end of a vehicle exhaust system. The diffuser can have a generally hollow body with an inlet for receiving exhaust gasses from a substantially vertically-extending component of the vehicle exhaust system, and a substantially flat outle... | 08/24/2010 |
| 7775321 | Muffler structure A muffler structure in which a subassembly formed by fixing an inner cylinder and a separator is not welded to the outer cylinder in welding an overlapping portion of a sheet metal wrapped around the subassembly. A subassembly is formed by fixing an inner cylinder a... | 08/17/2010 |
| 7740105 | Outer tube of exhaust system part A sheet metal is rolled double to form a cylinder having an inner plate 2 and an outer plate 3, and form an overlapped portion 4, with their circumferential end portions 2a and 3a crossed in the circumferential direct... | 06/22/2010 |
| 7735602 | Muffler structure A muffler structure capable of suppressing generation of abnormal noise in the muffler even when the outer and the inner tubes expand thermally. Provided is a double-pipe muffler structure including an inner tube and an outer tube. In the muffler structure, an annul... | 06/15/2010 |
| 7686131 | Vehicle exhaust tip assembly An exhaust tip assembly conducts hot engine exhaust from a muffler through an opening in a molded plastic bumper fascia. An exhaust pipe defining a cross-sectional flow area for the exhaust flow and has an inlet end attached to the muffler and an outlet end. The exh... | 03/30/2010 |
| 7604092 | Exhaust system In an exhaust system of a motor vehicle, a tailpipe cover is disposed on the exhaust pipe and protrudes through a cutout in the vehicle rear part with a defined gap clearance. In a hot condition, where a length of the exhaust system is increased due to thermal expan... | 10/20/2009 |
| 7549508 | Muffler A muffler includes a shell main that is formed in a cylinder with two openings opposite to each other being apart from each other in an axial direction of the shell main body by rolling a flat plate to have an overlapped portion overlapping an inner end portion and ... | 06/23/2009 |
| 7484590 | Fuel cell system with muffler A fuel cell system with a muffler to reduce noise generated while supplying air to a fuel cells disclosed. One embodiment of the fuel cell system includes an air feeder to supply air; an electric generator to generate electricity through an electrochemical reaction ... | 02/03/2009 |
| 7464787 | Motorcycle exhaust assembly and method of using same A configurable motorcycle exhaust assembly, including an elongated hollow body; an inlet end cap fixedly connected to an inlet end of the elongated hollow body; an exhaust end mount fixedly connected to an exit end of the elongated hollow body; and an exhaust end ca... | 12/16/2008 |
| 7434570 | Snap-action valve for exhaust system A passive, exhaust pressure actuated valve assembly for placement inside a tubular exhaust conduit is pivotally mounted to an off-center axle for rotation between fully closed and fully opened positions. A bias element forces the valve flap toward the fully closed p... | 10/14/2008 |
| 7434656 | Exhaust device for vehicle engine An exhaust device includes an exhaust pipe connected at its upstream end to a cylinder head of the engine and an exhaust muffler connected to the downstream end of the exhaust pipe for suppressing the generation of noise from a heat insulating cover that covers a pa... | 10/14/2008 |
| 7424931 | Muffler for a motorcycle A muffler for a motorcycle, the muffler including an outer tube and an inner tube disposed substantially within the outer tube. The inner tube includes a first end adapted to receive the exhaust gases from the engine, a second end opposite the first end adapted to r... | 09/16/2008 |
| 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 |
| 7374016 | Muffler device To provide a muffler device capable of improving the discharge of exhaust gas, while discharging the exhaust gas in any desired direction. The muffler device is connected to a rear end portion of an exhaust pipe extending from an internal combustion engine of a vehi... | 05/20/2008 |
| 7364013 | Shell main body for muffler The shell main body for a muffler includes an inner shell in a cylindrical shape with a cross-section of an imperfect circle defined by small arc portions alternating with large arc portions; and an outer shell wrapping the inner shell and formed in a cylindrical sh... | 04/29/2008 |
| 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 |
| 7350620 | Compact silencer There is disclosed a silencer for attenuating sound waves produced in a fluid that circulates through a fluid conveyer. The silencer comprises an expansion chamber that is in fluid communication with the fluid conveyer, and which carries sound waves there through; a... | 04/01/2008 |
| 7331422 | Vortex muffler A muffler includes an inner passage residing in an outer shell, and a stationary fan residing in the inner passage. The fan creates a vortex in a flow through the inner passage thus improving the flow and reducing the exhaust sound level. The inner passage includes ... | 02/19/2008 |
| 7325651 | Motorcycle exhaust system To provide a motorcycle exhaust system, which is less susceptible to the elevated temperature of the exhaust gases and vibrations induced by the motorcycle combustion engine (E) and in which the sectional area of the exhaust passage can be properly adjusted independ... | 02/05/2008 |
| 7318497 | Exhaust device including a resin muffler cover and muffler protector To provide an exhaust device for enhancing the appearance quality, secure the degree of freedom in designing and enhance the cooling performance. An exhaust device in which a second exhaust muffler at a rear portion of an exhaust system extends rearwardly from an en... | 01/15/2008 |
| 7293629 | Exhaust apparatus for small-sized engine An exhaust apparatus has an exhaust pipe that receives exhaust gas from an engine and a muffler attached to the exhaust pipe. The muffler has an exhaust portion that discharges exhaust gas received by the exhaust pipe. A tubular member is attached to the exhaust por... | 11/13/2007 |
| 7293628 | Shell main body for muffler A cylindrical shell main body constituting a muffler main body is formed of two layers of an inner shell and an outer shell and has a cylindrical shape with a cross section that is not a perfect circle but is defined by alternated small arc portions and large arc po... | 11/13/2007 |
| 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 |
| 7281606 | Exhaust sound and emission control systems The exhaust sound and emission control systems comprise a series of embodiments of devices for reducing sound and noxious emissions from an automotive exhaust. The system may have an exhaust resonator having one or more catalytic converter elements in combination th... | 10/16/2007 |
| 7278514 | Acoustic noise filter An acoustic filter is provided with a single flow chamber for exposure of a flexible rubber layer to liquid undergoing flow through the flow chamber with noise producing acoustic energy therein. The flexible rubber layer is supported on a cylindrical drum with slant... | 10/09/2007 |
| 7273130 | Device and method for active soundproofing, and power unit for aeroplanes A device for active noise reduction has a chamber, which is arranged laterally in relation to a gas flow, and a chamber opening constructed in one wall of the chamber. In the area of the chamber opening, a deflection device is adjustably arranged. The deflection dev... | 09/25/2007 |
| 7263826 | Muffler device with catalysts for improving purifying exhaust gas of nitrogen oxides within a motorcycle exhaust pipe A muffler device with catalysts for improving purifying exhaust gas of nitrogen oxides within a motorcycle exhaust pipe comprises a muffler divided into three chambers, a first chamber, a second chamber, and a third chamber; a front exhaust pipe; a front reduction c... | 09/04/2007 |
| 7261181 | Detatchable muffler apparatus for pneumatic tools The exhaust created from the operation of pneumatic tools can create a considerable amount of noise. The present disclosure includes a detachable muffler apparatus used to reduce the sound during the operation of a pneumatic tool. The muffler apparatus includes a fl... | 08/28/2007 |
| 7240767 | Fixing structure of tail pipe of exhaust pipe A clamping member (2) for clamping a periphery of a rear-end open portion of an exhaust pipe (3) is accommodated in a front-end open portion (11) of a tail pipe (1). The clamping member (2) has a pair of plate parts (21, 22)... | 07/10/2007 |
| 7240769 | Exhaust volume An exhaust volume (20) of the type including a muffler (24) having a casing provided with an inlet (29) and an outlet (30) for passing gases and adapted to enable the muffler to be mounted in an exhaust system (14). The volume furt... | 07/10/2007 |
| 7234297 | Motorcycle exhaust enhancers Sound and power are an important part of the motorcycling experience. From the early days people have been attempting to get it “right” and have tried numerous ways to achieve the best of both worlds. Generally one had to be sacrificed to some degree to get the ... | 06/26/2007 |
| 7228935 | Attachment pin for an exhaust-gas muffler The invention relates to an attachment pin (1) for fixing an exhaust-gas muffler (2) in an apparatus part (4) of a portable handheld work apparatus (5) driven by an internal combustion engine. The exhaust-gas muffler (2) includes e... | 06/12/2007 |
| 7219764 | Exhaust muffler A muffler may comprise a casing having an internal volume, an inlet and an outlet, and a diverter plate dividing the internal volume into a first chamber and a second chamber. The diverter plate may comprise a baffle wall portion and at least one diverter having a d... | 05/22/2007 |
| 7210912 | Reciprocating piston compressor having improved noise attenuation A reciprocating piston compressor having a suction muffler and a pair of discharge mufflers to attenuate noise created by the primary pumping frequency in the primary pumping pulse. The suction muffler is disposed along a suction tube extending between the motor cap... | 05/01/2007 |
| 7188621 | Portable ventilator system A portable ventilator uses a ROOTS-type blower as a compressor to reduce both the size and power consumption of the ventilator. Various functional aspects of the ventilator are delegated to multiple subassemblies having dedicated controllers and software that intera... | 03/13/2007 |
| 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 |
| 7156199 | Motorcycle A motorcycle includes a seat supporting member provided extending in a rearward direction from a body. The seat supporting member includes an upper seat supporting member with a seat in place and a lower seat supporting member connected to and separated in a downwar... | 01/02/2007 |
