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7621373 Acoustic drain  
A baffle assembly for a hollow cavity is disclosed. The baffle assembly includes a labyrinth that defines a tortuous drain passageway. The baffle assembly includes a vertical portion that abuts an...
7610993 Flow-through mufflers with optional thermo-electric, sound cancellation, and tuning capabilities  
A flow-through muffler includes a plurality of heat conducting walls, baffles, or partitions that together define a plurality of passages arranged to form acoustic waveguides, attenuators, and/or...
7588424 Linear compressor unit  
A linear compressor unit including a reciprocating magnet driven by an electromagnetic alternating field. The magnet drives a piston reciprocatingly in a cylinder in a module casing, which casing...
7584822 Noise level reduction of sparger assemblies  
A method results in a system configuration wherein positioning a plurality of spargers reduces noise levels caused by fluid passing through the plurality of spargers. The method includes providing...
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,...
7549511 Exhaust sound and emission control systems  
The exhaust sound and emission control systems reduce sound and noxious emissions from an automotive exhaust. The system may have an exhaust resonator having one or more catalytic converter...
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...
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...
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...
7407036 Muffler for compact combustion engines  
To provide a muffler for a compact combustion engine, which is simple in structure and effective to sufficiently reduce the temperature of exhaust gases while avoiding contact with an external air,...
7380637 Exhaust-gas muffler  
The invention is directed to an exhaust-gas muffler ( 1 ) of a handheld work apparatus driven by an internal combustion engine. The exhaust-gas muffler ( 1 ) includes a muffler housing ( 2 ) which...
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...
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...
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...
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...
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...
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...
7191868 Combined silencer and spark arrester  
A silencer for silencing exhaust gases includes an acoustic resonator chamber that serves as a spark arrester to trap burning carbon particles and prevent them passing to the atmosphere. The...
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...
7147082 Suction muffler for a reciprocating hermetic compressor  
A suction muffler for a reciprocating hermetic compressor, comprising a hollow body ( 10 ) provided with a gas inlet and a gas outlet ( 12, 14 ), which are respectively in fluid communication with...
7104359 Muffler having a baffle with angled plates  
A muffler having a baffle with angled plates includes a one piece baffle, a container and two end caps. The one piece baffle has at least three different configurations. The baffle preferably has...
7063182 Muffler baffle plate spacer formed from stock material  
A muffler has a pair of spaced baffle plates that each receive a flow tube. The flow tubes have spaced ends such that an intermediate chamber is defined to receive air flow to be dampened. In...
7040451 Automotive exhaust silencer system with variable damping characteristics  
In a muffler device of a motor vehicle, with a plurality of mufflers and an actuator for changing the flow resistance to the exhaust gases flowing through the mufflers, in order to change the...
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...
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...
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....
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...
6942061 Muffler for internal combustion engine  
A performance muffler suitable for installation into an exhaust system for an internal combustion engine wherein either end of the muffler may be designated as the entrance end for the receipt of...
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...
6796402 Muffler having isolated dual flow baffle structure  
An exhaust that has two isolated baffle systems in one container. This allows the exhaust from one manifold to be muffled and exhausted independently of the other manifold's exhaust. Moreover, the...
6736238 Air intake silencer  
A silencer for connection to the air intake of a machine such as a turbocharger compressor. The silencer comprises a housing containing a plurality of axially spaced annular noise attenuating...
6659222 Multi-chambered muffler  
A muffler includes an outer shell which defines a chamber. A baffle is positioned in the chamber. A pair of plates cooperate with the baffle to partition the chamber into subchambers.
6644437 Vehicle exhaust with length-equalizing muffler  
An exhaust system provides the benefits of equal or near equal length exhaust pipes for vehicles (for example with transverse engines) having differing length exhaust pipes connected with a single...
6622821 Thin acoustic muffler exhaust pipes, method of sheet metal construction thereof, and exhaust systems which utilize such exhaust pipes for increased ground clearance on race cars  
A flattened acoustic muffler for use on stock cars. The muffler mounts to the standard exhaust system pipes and to the lower chassis of the car, routing exhaust gasses to one or both sides of the...
6571910 Method and apparatus for improved noise attenuation in a dissipative internal combustion engine exhaust muffler  
The use of fiber metal or similarly high flow resistance and high acoustic transparency material as a liner for traditional acoustically absorptive media in a dissipative muffler exhibits improved...
6533065 Noise silencer and method for use with an ultrasonic meter  
A silencer for use with ultrasonic meters to reduce stray ultrasonic noise that could cause measurement inaccuracies. The silencer comprises a tubular body having at least two baffles spaced apart...
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...
6467260 Gas flow headers for internal combustion engines  
An exhaust header system for an internal combustion engine having improved exhaust gas flow characteristics. Primary pipes extend from openings in a flange bolted to the engines exhaust ports. The...
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...
6382349 High-performance muffler  
A muffler for automotive vehicles. The muffler includes a passageway, an inlet at one end of the passageway, and a single outlet or dual outlets at the passageway's other end. The portion of the...
6364055 Acoustically non-resonant pipe  
A non-resonant pipe assembly comprised of two acoustical pipe paths in phase opposition. One pipe path by its physical presence will act as a half wave. The other pipe path is longer than the first...
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...
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...
6089347 Muffler with partition array  
A muffler (10) having a casing (21), an inlet opening (22) and an outlet opening (26). An initial partition (30) forms an expansion chamber (28). The casing (21) has mounted and formed therein a...
5773770 Cross flow path exhaust muffler  
An exhaust muffler includes a housing having a rectangularly shaped hollow interior without fiberglass or other packing. An inlet tube and a first outlet tube extend through one side wall of the...
5756944 Filter muffler  
A circular-cylindrical filter muffler includes damping elements (3) arranged with their damping surfaces (11, 12) parallel to the central axis (13) of the filter muffler housing (2), which is cast...
5714724 Muffler mounted in a pipe  
The invention is directed to a muffler for insertion into a pipe such as the intake pipe of an internal combustion engine. The muffler includes a base body defining a longitudinal axis and having...
5703338 Sound absorber  
A sound absorber for jet engines and the like including a housing defining an inflow opening and an outflow opening. Sound absorbing elements positioned within the housing define substantially...
5670757 Exhaust silencer for engines and generators  
An exhaust silencer for receiving exhaust gasses from an engine includes inner and outer cylindrical walls and top and bottom closure plates. The inner wall and the top and bottom closure plates...
5659158 Sound attenuating device and insert  
A sound attenuating muffler useful with an internal combustion engine, preferably for marine applications, contains an insert comprising an arrangement of annular sound reflecting surfaces defining...
Matches 1 - 50 out of 176 1 2 3 4 >