Matches 1 - 50 out of 170 1 2 3 4 >
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7624841 Silencer  
A silencer having improved noise reduction characteristics is disclosed. The silencer includes a first cylindrical connection pipe for guiding the flow of a fluid, a cylindrical expansion pipe...
7617675 Catalyst chamber  
In order to make available an exhaust gas system for a combustion engine with an external housing, which contains at least one rear shell and one front shell, and with a catalyst chamber, in which...
7584821 Adjustable helmholtz resonator  
An adjustable Helmholtz resonator assembly is provided having an active state and an inactive state. In the active state the Helmholtz resonator assembly is operable to attenuate pressure...
7556123 Muffler duct  
In a muffler duct including a duct body and a resonance box, the inside of the duct body and the inside of the resonance box are made to communicate directly with each other not through a...
7549510 Vehicle exhaust system  
An exhaust system for a straddle-type vehicle that achieves miniaturization while meeting a demand for noise reducing characteristics. The exhaust system is connectable to an engine, and includes...
7543683 Vehicle resonator structure and attachment method  
A vehicle resonator structure and attachment method is provided and includes a resonator chamber that has a first intake tube and a first exhaust or outlet tube attached thereto. At least one of...
7503427 Muffler  
A muffler is capable of sufficiently reducing flow noise, discharge noise, vehicle noise, and cabin noise, preventing a pressure loss, and improving output power. The muffler has a muffler body, an...
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...
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...
7389852 Integrated heat exchanger and muffler unit  
An integrated heat exchanger and muffler unit ( 50,120,140 ) is provided for transferring heat between a first fluid and a second fluid, and for muffling the noise of the first fluid. The unit...
7387188 Sound absorber  
A sound absorber includes an inner component and an outer component surrounding the inner component, the inner component defining an inner wall provided with apertures, and the outer component...
7384609 Pre-converter device for cleaning exhaust gas for an internal combustion engine  
A catalytic converter device for cleansing exhaust gas emitted from an internal combustion engine is disclosed. The catalytic converter device includes an elongated body having a longitudinal axis....
7383919 Rotatable propeller driven engine exhaust system  
An exhaust chamber system having a rotatable propeller type blade assembly at the entry to an expansion chamber which creates a vortex that swirls exhaust gas towards the outlet. The resultant...
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...
7367424 Eccentric exhaust muffler for use with auxiliary power units  
A muffler system is provided for use with an auxiliary power unit. In one embodiment, and by way of example only, the system includes an outer can, an annular baffle, and a tube. The outer can has...
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...
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...
7308967 Sound suppressor  
A sound suppressor for a firearm for reducing sound and flash levels upon the discharge of a firearm comprises a cylindrical housing, a proximal end cap with means for attachment to a firearm and...
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...
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...
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....
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...
7261755 Heat-resistant filter layer, filter body, and process for producing the filter layer and the filter body  
Within the framework of the purification of exhaust gases of mobile internal combustion engines, filter materials are subjected to particularly high thermal and dynamic conditions. As a result, it...
7255197 Muffler  
A muffler which reduces noises of a wide frequency band with a simple structure. Sound waves of an intake duct enter into and are received in a resonance box via a branch pipe. At the branch pipe,...
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...
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...
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...
7044266 Exhaust muffler for internal combustion engines  
Performance sound is produced with a muffler that includes a casing with front ( 5, 37 ), rear ( 7, 41 ) and side ( 3, 35 ) walls, first ( 9, 45 ) and second ( 11, 47 ) compartment walls each with...
7017610 Damper for hydraulic systems  
Disclosed is a damping device to be incorporated into fluid systems, particularly hydraulic systems, said damping device comprising an expansion hose. An essentially rigid damper which is oriented...
6988057 Methods for designing a chamber to reduce noise in a duct  
Low-frequency duct noise is relatively difficult to deal with by passive methods such as porous duct lining. Reactive methods like expansion chamber are rather bulky, while compact resonators are...
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...
6948585 Acoustic wave attenuator for a rail  
An actuator rail assembly for conveying an actuating fluid under pressure to at least one fuel injector includes an elongate fluid passageway ( 18 ) being defined in a rail ( 12 ). A fluid inlet...
6941751 Exhaust muffler and muffler system for use with an internal combustion engine  
An exhaust muffler system for use on a motorcycle or four-wheeled vehicle provides for operation in either of two modes, a regular configuration that provides a high degree of noise reduction, or a...
6932188 Silencer for vacuum cleaner  
A silencer for a vacuum cleaner is provided and includes at least one hermetic expansion chamber mounted in an exhaust channel of the vacuum cleaner and allowing an exhaust airflow from the vacuum...
6905002 Acoustic wave attenuator for a rail  
An actuator rail assembly for conveying an actuating fluid under pressure to at least one fuel injector, include an elongate fluid passageway being defined in a rail. A fluid inlet port is in fluid...
6892854 Muffler with catalytic converter arrangement; and method  
An apparatus for modifying an exhaust stream of a diesel engine is provided. The apparatus includes a muffler arrangement having an exhaust inlet and an exhaust outlet in construct and arrange for...
6892853 High performance muffler  
A high performance muffler, e.g., for an internal combustion engine, reduces exhaust or other gas noise while maintaining a low backpressure to prevent engine power loss. A side inlet pipe connects...
6789644 Engine muffler  
In the engine muffler including a first expansion chamber 12 of the exhaust gas having an exhaust gas inlet aperture 11 connecting to an exhaust gas outlet of the engine, a second expansion...
6764632 Energy attenuation restrictor device and method of forming such restrictor device  
An energy attenuation restrictor device for use in an energy attenuation apparatus for a conduit adapted to convey a liquid under pressure, particularly, in the power steering system of a vehicle...
6742623 Muffler for internal combustion engine  
A muffler for an internal combustion engine is disclosed which is capable of effectively enhancing its muffling effect without any substantial increase in size, weight or manufacturing cost. The...
6722467 Noise attenuator for an air supply system of an internal combustion engine  
A sound attenuation system for a compressor of a direct fuel injected engine of an outboard motor comprises a discharge sound attenuator connected in fluid communication with an air distribution...
6695094 Acoustic muffler for turbine engine  
An acoustic muffler for a turbine engine exhaust comprises an outer shell of tubular configuration, a tubular liner disposed within the shell, and a plurality of dividing walls extending between...
6688423 Fluid-borne noise suppression  
A method of securing a restrictor, having an open hollow cylindrical end shell, to a spirally wound tuning cable having an end disposed in the shell, wherein the shell is magnetically deformed...
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...
6681888 Silencing apparatus, notably for a turbo engine  
A silencing apparatus to be fitted between a first air or fluid intake duct ( 1 ) and a second air or fluid exhaust duct ( 2 ), said silencing apparatus being notably fitted between an engine...
6564902 Device and method for a sound-attenuating unit  
A device for a sound-absorbing unit for reduction of sounds from a flowing gas stream, including a first flow path and a second flow path for said gas stream and a switch-over device for...
6478053 Pressure-pulsation-damping fluid supply conduit  
A conduit for supplying a fluid and damping pressure pulsations in the fluid, the conduit having an outer pipe and an inner pipe housed inside the outer pipe, and the outer pipe having a...
6470998 Modular muffler with end plate adaptors and spark arresters  
A modular muffler that is quickly and easily adapted for use with a wide variety engines is disclosed. The muffler has a dimensionally standardized body member with end portions that may receive...
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...
6454047 System and method for phases noise attenuation  
A method and system for attenuating noise including arranging a plurality of accumulators ( 210, 310 ) to form a transmittance path for compressible flow mass and noise between a noise source (...
Matches 1 - 50 out of 170 1 2 3 4 >