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7635048 Sound suppression device for internal combustion engine system  
A machine is provided having an engine system wherein at least one engine system component with an acoustic reflective surface is surrounded by a jacket configured to absorb sound from at least one...
7621370 Sound increase apparatus  
A sound increase apparatus includes a partition wall adapted to divide an engine room for defining a first engine room space that is located on a side of a dash panel and a second engine room space...
7490697 Portable acoustic diffuser for portable generators  
A portable casing includes a body that has first, second, third and fourth sidewalls defining a cavity therebetween. The body has open top and bottom surfaces spanning along a cross-section...
7485019 Molded motor silencing system having a vibro-acoustic material  
An apparatus and method for silencing an engine are disclosed. A silencer is disposed about a motor and is molded to substantially match at least one of a contour of the cover and a contour of the...
7430992 Engine-driven work machine  
A duct member is disposed around outer peripheries of an engine and an engine-driven generator to define a continuous cooling-air passage between the duct member and the outer peripheries. A...
7431128 Noise absorbing structure of instrument panel  
A noise absorbing structure of an instrument panel of a vehicle includes a first noise absorbing panel, provided in the instrument panel disposed in front of a driver seat of the vehicle, a second...
7364014 Sound absorbing body, sound absorbing structural body, and method of manufacturing these bodies  
A sound absorbing body 40 has a molded body 44 including two unexpanded layers 41, 42 and an expanded layer 43 having a number of voids and held between these unexpanded layers 41, 42 , a...
7320299 Cooling system for liquid-cooled machines  
A cooling system for an engine of a lawnmower. The engine has a muffler through which exhaust gases exit the engine and is cooled by a liquid coolant. The cooling system includes a heat exchanger...
7201254 Machine housing component with acoustic media grille and method of attenuating machine noise  
Air flow openings in a machine housing facilitate air exchange with a machine, but may become outlets for machine noise. In order to protect a machine from possibly damaging elements while...
7201253 Soundproofing assembly and a part comprising a wall which if covered with said assembly  
A soundproofing assembly intended, in particular, to soundproof a motor vehicle. The inventive assembly includes four stacked layers, consisting respectively of: a first layer having an air...
7191753 Cover structure for engine  
The present invention provides an engine cover structure for an engine ( 1 ) whose cylinder head ( 7 ) is covered at three of front, rear, right and left sides thereof by a fuel tank ( 10 ), an air...
7188703 Device for establishing noise in a motor vehicle  
In a device for establishing noise in a motor vehicle, including a housing having an inlet space, which is in communication via an inlet line with a gas-carrying part of an internal combustion...
7182172 Sound insulation system  
A sound insulation system for use with a vehicle includes a layer of fibrous padding material having a first surface and an opposite second surface. The first surface includes multiple spaced apart...
7131422 Construction machine  
A construction machine includes an engine guard, an engine, a cooling fan, and a device for being cooled by the cooling fan, and an exhaust duct. The engine guard accommodates the engine and has...
7107959 Air intake apparatus  
An air intake apparatus has an air intake port opening outside, and an air intake path communicating the air intake port with a combustion chamber of an engine. For suppressing noise getting out...
7080619 Air intake apparatus  
An air intake apparatus includes an air intake duct provided with an inlet through which intake air should be introduced, an air cleaner disposed on the downstream side of the air intake duct and...
7080712 Soundproof material for vehicle and method of manufacturing the material  
An insulator dash ( 20 ) installed on the interior side surface side of a dash panel ( 10 ), comprising a single sound absorbing layer ( 21 ) formed of a fiber assembly or a laminated assembly...
7055649 Multi-density sound attenuating laminates and methods of making same  
Sound attenuating laminates, and methods of making the same, are provided. Heat is applied to a surface of a non-woven, fibrous layer of material to form a stratum of melted fibers having a density...
6988585 Sound insulation assembly for mounting in a tubular part, and a tubular part fitted with such assemblies, in particular a motor vehicle part  
A sound insulation in tubular parts regardless of the section shape of the part, uses a piece of material that is suitable for expanding over the entire section of the section, which piece is...
6983822 Sound absorptive protective mat  
The present invention concerns an automotive protective mat ( 1 ), also known as throw in mat or protective mat. This mat comprises a microporous stiffening layer ( 2 ) (acoustical membrane). This...
6971475 Vehicle trim components with selectively applied foam and methods of making same  
Vehicle trim components are formed by applying a layer of material onto a mold surface and then selectively applying foam prior to molding operations. Selectively applying foam may include applying...
6973193 Fan and compressor noise attenuation  
An exciting sound wave generator is positioned within a nacelle of a jet engine at its inlet to generate an exciting sound wave having a primary frequency generally different from a frequency of...
6951263 Sound absorber, especially for motor vehicles, and a method for producing a sound absorber  
A sound absorber (A), especially for motor vehicles, comprising a layer ( 4 ) of absorption material, such as open-pored or optionally closed pored foamed material or a wood fiber composite, and a...
6896098 Lid for muffling noises produced by an internal combustion engine, and method for producing such lid  
A lid adapted to be mounted on the cylinder head of an internal combustion engine by attachment screws includes a cap and a carrier element adapted to be attached to the cylinder head by the...
6875066 Sound insulation for outboard motors  
Sound insulation for an engine contained within an outer casing, the insulation made up from a minimal number of interlocking molded foam insulation pieces forming a substantially continuous shroud...
6848410 Sound transmission device for a motor vehicle  
A device for the targeted sound transmission from an intake tract of an internal combustion engine to the interior of a motor vehicle. The device comprises at least one hollow transmission conduit,...
6817441 Shape memory foam member and method of producing the same  
A shape memory foam member is disclosed. A coefficient of water absorption of the shape memory foam member is in the range between 0.01 g/cm 3 and 0.2 g/cm 3 in a non-compressed state. The shape...
6808045 Secondary acoustic attenuator for vehicle  
An acoustic barrier systems that reduces the amount of noise entering the passenger compartment of a vehicle includes a secondary acoustic attenuator that extends from a primary acoustic barrier to...
6805219 Engine cover  
An engine cover has a cover body having a through hole penetrating both sides of the cover body in an area opposed to a resonant space in which resonant sounds are generated. An opening of the...
6769510 Engine cover  
An engine cover mounted to an internal combustion engine of an automobile etc. includes a rigid cover body made of a resin or metal and covering an engine, a foamed member fixed to an inner face of...
6691667 Casing cover having an acoustically decoupled stop  
A casing cover ( 1, 10, 22 ) for an internal-combustion engine, particularly valve covers or oil pans, to be mounted detachably and fluid-tight to an engine block ( 5, 13, 23 ), having an elastomer...
6688424 Noise absorbing device and device for taking air into engine room of a construction machine  
An engine noise reduction device to reduce sound output from an engine compartment and supply cooling air to the engine compartment to increase cooling efficiency and prevent engine and component...
6666297 Acoustic shielding article  
An acoustic shielding article which includes a shaped thermoplastic element that has a metal inlay element fixedly attached thereto, is described. More particularly, the acoustic shielding article...
6631785 Sound attenuating composite articles incorporating scrim material and methods of making same  
Sound attenuating composite articles for use within vehicles as floor coverings and other interior trim components are provided. A sound attenuating composite article includes a damping layer,...
6619425 Soundproof cover  
A soundproof cover includes a sealing layer, a sound insulation layer, and a vibration inhibition layer. The sound insulation layer has a peripheral portion, is to be disposed so as to contact at...
6619276 Positive crankcase ventilation orifice muffler  
An orifice muffler is designed to minimize the sound pressure level of noise emanating from control orifices in the positive crankcase ventilation (PCV) system of an automotive vehicle engine. The...
6601556 Noise insulation structure of synthetic resin made chamber  
A noise insulation structure of a synthetic resin made conduit includes a synthetic resin made chamber and a rubber made noise insulation member. Since the chamber is closely covered around with...
6581720 Noise attenuating insulated heat shield  
An improved heat shield offers both a thermal insulation and reduced noise transmission for vehicular engine components, including exhaust manifolds, for example. The structure has three layers: an...
6550571 Noise reduction structure for cab of working vehicle  
A noise reduction structure for a cab of a working vehicle, by which a high degree of noise reduction effectiveness can be surely obtained, is provided. For this purpose, the noise reduction...
6512831 Noise abatement apparatus for appliance cabinet and method for reducing noise generated by an appliance  
Apparatus for reducing noise emitted from an appliance having a cabinet that supports at least one component that emits at least one acoustic pressure wave therefrom. In a preferred form, the...
6491133 Soundproof type engine driven work machine  
The soundproof casing is divided to an engine room ( 1 ), a muffler room ( 2 ) and a radiator room ( 3 ). The engine room ( 1 ) includes the engine E and a work machine unit (generator unit G). The...
6488001 Engine with soundproof cover of injector  
An injector is stored in a fixing block integrally formed with an intake manifold. A soundproof cover covers the entire electric supply terminal projecting from the injector in a lateral direction...
6419535 Outboard engine with acoustic seals installed in motor housing opening  
The escape of acoustic energy via an opening in a motor housing penetrated by a steering arm is reduced by installing a pair of acoustic seals. The seals have respective membranes which extend...
6405825 Noise absorption blade mounting structure for working vehicles  
To provide a noise absorption blade mounting structure for a working vehicle, which is enabled to be excellent in the draft straightening property in an air hole of the cover of an engine room and...
6358106 Vibro-acoustic treatment for engine noise suppression  
The vibro-acoustic energy produced by an engine is reduced by shrouding the powerhead with a blanket of material that both damps vibrations and absorbs acoustic wave energy. This vibro-acoustic...
6340068 Use of a material with a high internal damping for a component of a sound-emitting machine  
A sound generating or emitting machine having a component comprising a material with a high internal damping and tensile strength, the material comprising (1) a metallic base material, and (2) a...
6330930 Receptacle for sound-damping accommodation of a unit which can be installed in a motor vehicle  
A container for the noise-muffling accommodation of a unit to be installed in a vehicle, such as an electric motor, a pneumatic pump or the like, has two container parts. Each container part is...
6273213 Noise suppression louver having horizontal and vertical slats  
A noise suppression louver for an enclosure, in particular, an apparatus for suppressing sound at the openings which allow air to enter or exit an internal combustion engine enclosure. The louver...
6237717 Noise insulating member having low degree of water and oil absorbency  
A noise insulating member having a low degree of water absorbency and a low degree of oil absorbency. The noise insulating member includes a polyurethane foam obtained by reaction of an organic...
6216817 Damping structural substance and a damping coat forming method  
A vibration damped structure, which is excellent in vibration absorption and sound absorption effect, is provided by coating the surface of a structure to be damped with a mixture of molten...
Matches 1 - 50 out of 226 1 2 3 4 5 >