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| Number | Title | Issue Date |
| 8025121 | Tube structure for exhaust component A vehicle exhaust component includes an outer shell defining an internal cavity, at least one baffle located within the internal cavity, and at least one tube supported by the baffle. The baffle is fixed to the outer shell and includes at least one opening. The tube... | 09/27/2011 |
| 7650964 | Arrangement of parts and a respective manufacturing method An arrangement of parts having a first part in the form of sheet metal which is in contact with the second part along an edge and is fixedly connected to the second part via at least one weld. To reduce stress peaks at the ends of welds, the first part has a slot in... | 01/26/2010 |
| 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 |
| 7407037 | Exhaust silencer for internal combustion engine A high-performance exhaust silencer in which a shell wall includes a shell outer plate, a shell inner plate, and a damping material to be inserted therebetween. A space between the shell outer plate and shell inner plate of the exhaust silencer is narrowed and the s... | 08/05/2008 |
| 7380639 | Backpressure reducing exhaust system with stationary blade structure The present invention provides an exhaust chamber system, comprising a stationary propeller type blade assembly with a nose cone within or adjacent to an expansion chamber, to create a vortex that swirls exhaust gas towards the outlet. The resultant vacuum within th... | 06/03/2008 |
| 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 |
| 7350619 | Auxiliary power unit exhaust duct with muffler incorporating an externally replaceable acoustic liner Methods and apparatus are provided for an exhaust duct having an externally replaceable acoustic liner. The exhaust duct includes a forward section that is configured to be axially coupled with a bulkhead collar on the aircraft, a body section that is coupled to the... | 04/01/2008 |
| 7341448 | Gas-fired heating apparatus The gas-fired heating apparatus, especially a water heater, has a combustion chamber (2a); an atmospheric gas burner (5) within the combustion chamber (2a); a combustion gas/air supply system (18) having an intake device ( | 03/11/2008 |
| 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 |
| RE39972 | Detachable integral aircraft tailcone and power assembly The present invention provides a tailcone and power assembly mountable to the body of an aircraft using a height adjustable dolly. The tailcone assembly comprises a longitudinal support member, a gas turbine engine mounted to the support member; a firewall; two curv... | 01/01/2008 |
| 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 |
| 7273592 | 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. The exhaust gas post treatment within the muffler, which forms sulfuric acid, takes place in at least one exhaust gas post treatment/muff... | 09/25/2007 |
| 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 |
| 7194862 | Resonator adopting counter-bored holes and method of suppressing combustion instabilities A resonator for damping pressure waves or instabilities in a system supported by acoustic energy wherein the resonator adopts the use of counter-bored openings on the downstream side of the resonator within the flow path of the system. The resonator includes a first... | 03/27/2007 |
| 7191849 | Pneumatic tool A pneumatic tool includes a shell with a chamber defined therein, a first passage communicated with the chamber and a second passage communicated with the chamber. A rotor is installed in the chamber for rotation when driven by pressurized air flowing into the chamb... | 03/20/2007 |
| 7156624 | Compressor sound suppression A compressor has a housing. One or more working elements cooperate with the housing to define a compression path between suction and discharge locations. An intermediate port is located along the compression path. A branch path extends to the intermediate port. The ... | 01/02/2007 |
| 7134847 | Hermetic electric compressor having a suction muffler The present invention provides an hermetic electric compressor capable of stably supplying oil to a compression chamber with a low noise level. The hermetic electric compressor has a closed vessel, an electric element, a compressing element that is disposed over the... | 11/14/2006 |
| 7100736 | Serviceable muffler A serviceable muffler (20) has an end plate (34) releasably clamped (36) to an open end (30) of a muffler body (26) and permitting access to an internal catalytic or filter element (28) for removal and replacement. An apertu... | 09/05/2006 |
| 7086857 | Use of thermal insulation for noise abatement In a residential furnace having a layered insulation material on the inner walls of the heat exchanger compartment, the inner aluminum foil layer has a plurality of holes formed therein in order to allow for the outer layer to absorb the sound within the heat exchan... | 08/08/2006 |
| 7085388 | High frequency jet nozzle actuators for jet noise reduction A noise reduction system for use with an exhaust nozzle associated with a jet engine of an aircraft. The noise reduction system employs a plurality of flow-altering components disposed circumferentially about a lip portion of an exhaust nozzle. In one preferred form... | 08/01/2006 |
| 7051523 | Exhaust system assemblies employing wire bushings for thermal compensation Exhaust system assemblies employ wire bushings for thermal compensation to minimize noise due to “stick-slip” while the system cools. In a preferred embodiment, the wire bushings are formed of at least one strand of wire coiled about male end portions of pipe se... | 05/30/2006 |
| 6935461 | Exhaust sound and emission control systems The exhaust sound and emission control system is a system 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 therewith in a single device. Alter... | 08/30/2005 |
| 6918463 | Muffler for engine A muffler comprises a casing and an exhaust pipe penetrating the casing. An exhaust gas chamber 4 is defined between the outer wall surface of the exhaust pipe and the inner wall surface of the casing. In the exhaust pipe positioned in the casing, an enlarged... | 07/19/2005 |
| 6892855 | Embossed shell for spun mufflers An exhaust muffler with a single-wall shell having a first end and a second end features a plurality of embossments formed on the shell and extending from the first end of the muffler to the second end of the muffler. The embossments are arranged in a pattern such t... | 05/17/2005 |
| 6860725 | Suction gas guiding system for reciprocating compressor A suction gas guiding (100) system for a reciprocating compressor (30) includes a gas guide conduit (110) penetrating an inner stator of a reciprocating motor and having both ends installed on a suction pipe (50) of a shell (10) an... | 03/01/2005 |
| 6845843 | Suction muffler for a refrigerating machine The invention concerns a suction muffler for a refrigerating machine with a housing, in which at least one chamber is arranged and which has an inlet opening (7), an outlet opening and an oil discharge opening. It is endeavoured to avoid that too much ... | 01/25/2005 |
| 6832665 | Exhaust gas muffler An exhaust gas muffler for an engine, the exhaust gas muffler having a body, at least one inlet for the exhaust gas from the engine on the body, a baffled chamber in the body to receive exhaust gas from the at least one exhaust gas inlet, at least one exhaust gas ou... | 12/21/2004 |
| 6832664 | Clampless hose retainer mechanism A rubber hose of an air supply assembly is secured to a resonator by an inserted internal tube. A tapered insertion end of the internal tube is inserted into the rubber hose and slides along an angled surface of the rubber hose. The tapered insertion end presses the... | 12/21/2004 |
| 6802387 | Muffler with external water trap A vertical mount muffler (40) has an external water trap (52) in an exhaust pipe (48) and drains water from a point between the muffler housing upper outlet (46) and the terminal end (50) of the exhaust pipe. The water trap (52 | 10/12/2004 |
| 6799657 | Absorptive/reactive muffler for variable speed compressors An absorptive and reactive muffler includes an annular flow path for the gas with the center of the annulus having a plurality of resonators which are in open communication with the downstream end of the annular flow path and make up the reactive portion of the muff... | 10/05/2004 |
| 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 chamber 14 having an exhaust gas outlet aperture 13 | 09/14/2004 |
| 6769511 | Variable tuned exhaust system A muffler includes a housing having an inlet, an outlet, and at least one variable resonance chamber defined by a slidable member. The slidable member may be actuated by the pressure of exhaust gas flowing through the housing. Actuation of the slidable member change... | 08/03/2004 |
| 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 |
| 6715581 | Exhaust pipe and muffler for motorcycle that does not heat discolor A chromed exhaust pipe and muffler for motorcycles that is capable of withstanding the extreme heat generated at high rpm's of a motorcycle engine without discoloring or “bluing”. A double wall construction is utilized for the exhaust pipe and muffler with the b... | 04/06/2004 |
| 6702062 | Exhaust system for automobile engine An exhaust system having an exhaust manifold that comprises a plurality of single-shell discrete exhaust pipes connected to an engine, a double-shell collective chambered pipe joined to the discrete exhaust pipes and comprising an internal pipe shell into... | 03/09/2004 |
| 6679351 | Air turbine for combustion engine An air turbine apparatus for use with a combustion engine either as a muffler or as an air intake device is comprised of a housing defining an expansion chamber and an airfoil positioned within the housing. The airfoil includes a central aperture extendin... | 01/20/2004 |
| 6659221 | Engine intake silencer A box-shaped intake silencer for an engine is obtained by joining together an upper half and a lower half. The intake silencer includes a connecting duct for supplying air to the engine and an intake duct for bringing in outside air. The intake silencer b... | 12/09/2003 |
| 6651773 | Exhaust sound attenuation and control system An exhaust sound attenuation and control system combines the functions of a muffler and resonator in a single, relatively compact device. The internal components of the device may also be coated with one or more emission reduction materials to provide a c... | 11/25/2003 |
| 6589643 | Energy conversion fiber and sound reducing material A fiber body includes a collection of fibers containing thermoplastic resin as the main component and an energy consuming component, such as a piezoelectric material for converting and consuming external mechanical energy of sound and vibration. The energ... | 07/08/2003 |
| 6547536 | Reciprocating compressor having a discharge pulsation A reciprocating compressor has a pair of discharge mufflers disposed on a lower portion of a cylinder block, a first and a second refrigerant channels for intercommunicating the pair of discharge mufflers with a refrigerant discharge chamber of a cylinder... | 04/15/2003 |
