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| Number | Title | Issue Date |
| 8177023 | Sound dampening housing for rock drill The invention relates to a sound dampening housing for a rock drill which moves along a feed beam in a longitudinal direction thereof, the sound dampening housing being attachable to the feed beam of the rock drill on its both sides so that together with the feed be... | 05/15/2012 |
| 7874400 | Noise isolation device for swimming pool pumps and other machinery A noise isolation device includes a plurality of panels comprising a sound absorbent material for assembling into an enclosure for a pump mechanism and a plurality of fasteners built into the panels for assembling the panels to form an enclosure for a pump mechanism... | 01/25/2011 |
| 7845463 | Low-noise machine package A conventional machine package faces problems concerned with costs, weight, etc. and also a problem of antinomy that an attempt to enhance the noise reducing performance increases the airflow resistance and then deteriorates the cooling performance. Providing a soun... | 12/07/2010 |
| 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 thereof. The body has an outer layer formed from foam material and an inner ... | 02/17/2009 |
| 7481296 | Sound reducing device for a coffee grinder and other kitchen appliances A device and a method for reducing or muffling sound from kitchen appliances such as coffee grinders. The sound reducing or muffling device can be left on the appliance even when not in use, providing a decoration to the kitchen in a style appropriate to it's surrou... | 01/27/2009 |
| 7467687 | Thermal—acoustic enclosure An enclosure for apparatus that, during operation, generates heat and/or sound energy comprises at least one wall defining at least a portion of the enclosure hollow interior. The wall comprises in sequence outwardly from the enclosure hollow interior an inner panel... | 12/23/2008 |
| 7398855 | Compressor sound attenuation enclosure A sound attenuating cover for a scroll compressor is provided. The cover has a base member configured to support the compressor, the base defines a first chamber filled with a sound attenuating material. The sound attenuating chamber further has a cover member confi... | 07/15/2008 |
| 7379299 | Noiseproofed and ventilated enclosure for electronics equipment A system and method are disclosed for enclosing electronic equipment in a noiseproofed and ventilated enclosure. This includes supplying air to an enclosure and removing air from the enclosure through acoustic chambers attached to the enclosure. The acoustic chamber... | 05/27/2008 |
| 7379298 | Noise proofed ventilated air intake chamber for electronics equipment enclosure A system and method are disclosed for enclosing electronic equipment in a noiseproofed and ventilated enclosure. This includes supplying air to an enclosure and removing air from the enclosure through acoustic chambers attached to the enclosure. The acoustic chamber... | 05/27/2008 |
| 7334662 | Equipment enclosure acoustical door with low impedance distributed air flow An acoustic door for an equipment enclosure, such as a rack mount cabinet, also provides a low impedance air flow uniformly delivered across the cabinet opening. A pair of metal panels, with acoustic foam along the rear surfaces, extend angularly outward and toward ... | 02/26/2008 |
| 7331539 | Noise reduced food waste disposer A food waste disposer having devices to reduce noise is disclosed. The disposer has a food conveying section, a motor section, and a grinding section. To reduce the emitted noise that may result when food waste impacts the various components of the grinding section,... | 02/19/2008 |
| 7314113 | Acoustic absorbers for use with computer cabinet fans and other cooling systems Systems and methods for absorbing acoustic noise generated by computer cabinet cooling fans are described herein. In one embodiment, an acoustic absorber for use with a fan carried by a computer cabinet in a room includes a first acoustic panel spaced apart from a s... | 01/01/2008 |
| 7267196 | Method and apparatus for reducing acoustic noise A squeeze film damper reduces acoustic wave transmission by the damping and spring forces produced by squeezing a very thin layer of air trapped between two vibrating plates. The damping effect is most pronounced when the gap between vibrating plates is very small, ... | 09/11/2007 |
| 7252868 | Reinforced fibrous insulation product and method of reinforcing same An insulation product, and method of making the same, is provided comprising a mat containing randomly oriented fibers bonded by a binder, the mat having first and second major surfaces and a pair of side portions, and at least one flexible reinforcing layer bonded ... | 08/07/2007 |
| 7240766 | Sound dampening pad An easy to manufacture and install sound dampening pad for a printing blanket sleeve is provided. The pad effectively attenuates noise emanating from the sleeve during air pressurized mounting and dismounting of the blanket sleeve to an underlying cylinder. The soun... | 07/10/2007 |
| 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 facilitating air exchange and attenuating machine noise, the present disclosu... | 04/10/2007 |
| 7161801 | Commutate silencer of computer system A commutate silencer of a computer system is described. The commutate silencer of the computer system is installed at the back end of the computer system, and comprises a shield device, a commutate device and at least one partition. The shield device comprises a fir... | 01/09/2007 |
| 7150436 | Method for installing points in railway tracks and points for carrying out said method A method for installing railway switches in tracks is characterized in that the switch completely preassembled in functional units (1, 2, 7, 18) is transferred onto a transport vehicle, and that the tongue region, the rail interspace region and the core regio... | 12/19/2006 |
| 7104734 | One-way pneumatic delivery system A one-way pneumatic delivery system includes a plurality of sending units in fluid communication with a receiving unit via a duct system. Each of the sending units and the receiving unit include a door that selectively prevents fluid communication into the duct syst... | 09/12/2006 |
| 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 greater than that of the remainder of the fibrous layer. The density... | 06/06/2006 |
| 7017706 | Turbine noise absorber Exemplary methods, devices and/or system for reducing noise produced by a turbine, such as, a turbocharger turbine. An exemplary exhaust conduit employs material to absorb exhaust-borne noise and/or structure-borne noise. Another exemplary exhaust conduit employs fe... | 03/28/2006 |
| 7000729 | Five-layer sound absorbing pad: improved acoustical absorber An acoustical absorber, having the structure: scrim/film/batt/film/scrim. Preferably, the batt is made from about 60% to about 90% by weight natural fiber and about 10% to about 40% synthetic fiber. Also, a method of making the acoustical absorber is provided. Addit... | 02/21/2006 |
| 6964318 | Portable information terminal device A portable information terminal device has a plurality of casings providing a front surface and a rear surface, respectively. The casings have walls defining spaces in which speakers are housed and thicker than walls thereof that define a space in which a component ... | 11/15/2005 |
| 6942060 | Portable information terminal device A portable information terminal device has a plurality of casings providing a front surface and a rear surface, respectively. The casings have walls defining spaces in which speakers are housed and thicker than walls thereof that define a space in which a component ... | 09/13/2005 |
| 6932190 | Sound jacket for noise reduction in refrigeration apparatus An insulating jacket for refrigeration system component comprising a closed cell insulation layer comprising an inner and outer surface, an open cell foam layer comprising an inner and outer surface, the inner surface in contact with the outer surface of the closed ... | 08/23/2005 |
| 6922925 | Construction machine A construction machine of the present invention is provided, in a compartment formed by a cover, with an engine, a centrifugal fan, and a heat exchanger for exchanging heat between cooling air blown by the centrifugal fan and a specified medium, wherein the centrifu... | 08/02/2005 |
| 6896097 | Mounting structure of speaker for vehicle A speaker box is covered with a buffer material exclusive of a portion where an acoustic output is derived from a speaker unit. The speaker box covered with the buffer material is attached to the surface of a wall member such as an interior member of a vehicle body ... | 05/24/2005 |
| 6848236 | Machine protection device A treatment or manufacturing installation in a working area, comprising at least one machine having at least one workstation, particularly a beverage bottle treatment or manufacturing machine, which is fixedly disposed on a floor area, and comprising a machine prote... | 02/01/2005 |
| 6810989 | System for insulating the sound emanating from a motor/pump unit In an arrangement comprising a motor/pump unit and a sound-deadening cover, the sound-deadening cover absorbs the airborne noise emitted by the motor/pump unit. On the other hand, the sound-deadening cover acts like the diaphragm of a loudspeaker for the structurebo... | 11/02/2004 |
| 6784560 | Engine generator An engine generator including a soundproofing case that houses an engine and a generator therein. The engine includes an engine-side cooling fan and an engine-side inlet. The generator includes a generator-side cooling fan and a generator-side inlet. The engine gene... | 08/31/2004 |
| 6766879 | Sound reducing device for a coffee grinder and other kitchen appliances A device and a method for reducing or muffling sound from kitchen appliances such as coffee grinders. The sound reducing or muffling device can be left on the appliance even when not in use, providing a decoration to the kitchen in a style appropriate to it's surrou... | 07/27/2004 |
| 6722466 | Acoustic blanket for machinery and method for attenuating sound An acoustic blanket is disclosed for an industrial machine including a plurality of flexible panels, wherein each panel includes at least one layer of a fiber glass material, an outer casing of a chemically resistant material and an attachment for connecting the pan... | 04/20/2004 |
| 6658326 | Noise reduction system and method A noise reduction system reduces noise associated with an input signal provided to a control system, while substantially minimizing the adverse affect on the responsiveness and stability of the control system. The noise reduction system includes a process... | 12/02/2003 |
| 6631784 | Device for reducing noise emissions A device for reducing the noise emissions of a machine for printing flat material, wherein flat material is transportable across an impression cylinder, comprising at least one muffling element disposed across a portion of a transport path of the flat mat... | 10/14/2003 |
| 6606876 | Silencer for rear mounted bus air conditioner Sound attenuation apparatus for use in a bus in which an air conditioning unit that is mounted on the rear wall of the bus is arranged to exchange conditioned air for return air drawn from the buses passenger compartment through a central opening in the r... | 08/19/2003 |
| 6604603 | Soundproofing for insulating sound producing devices or parts of systems, especially devices that transmit vibrations such as vibrators A soundproofing system is used to insulate sound producing devices or parts of systems, especially vibrating conveyers. Such a system includes insulating elements that are provided with an inner face in the direction of the sound source and an outer face ... | 08/12/2003 |
| 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 structure has a configuration in which a sound-insulating chambe... | 04/22/2003 |
| 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 apparatus comprises at least one diffuser having at least one d... | 01/28/2003 |
| 6494690 | Hermetic compressor A hermetic compressor includes an electric drive portion, a compression portion and a casing. The electric drive portion has a rotor and a stator and generates a driving force to compress a refrigerant in the compression portion. The casing encloses the e... | 12/17/2002 |
| 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 muffler room (2) includes mufflers M1, M2. The radiator room incl... | 12/10/2002 |
