Sound Attenuating Gas Flow Path Patents (Class 96/384)
  • Patent number: 11313331
    Abstract: In an intake device for an internal combustion engine, a first resonator chamber (61) is defined between a clean side chamber (56) and a peripheral wall (8) of a case (2), and a first communication passage (61B) communicating a dust side chamber (55) with the first resonator chamber is extending along the peripheral wall of the case.
    Type: Grant
    Filed: October 10, 2019
    Date of Patent: April 26, 2022
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Takashi Sato, Akihito Saka, Jun Hatakeyama
  • Patent number: 8900356
    Abstract: An air filter assembly for an engine includes a filter element, a sound attenuation member and an end cap. The filter element may be a cylindrical filter element defining a hollow interior. The sound attenuation member may extend into the hollow interior of the cylindrical filter element. The sound attenuation member may include a flange at a first end thereof. The flange may have a diameter greater than a diameter of the hollow interior. The end cap may be secured to the cylindrical filter element and may function to fix the sound attenuation member relative to the filter member. The sound attenuation member is operative for reducing engine noise travelling through the air filter assembly.
    Type: Grant
    Filed: October 12, 2012
    Date of Patent: December 2, 2014
    Assignee: Mann+Hummel GmbH
    Inventor: Greg Bouhanna
  • Patent number: 8894759
    Abstract: A cogeneration apparatus having an engine and an air-cleaning device provided to the engine is disclosed. The air-cleaning device is provided with an air filter and a hollow resonator. The air filter is provided at a position where a space within an air-cleaning case splits into an upstream space and a downstream space, and the resonator is provided to the downstream space and positioned at a predetermined interval with respect to the air-cleaning case. Air is introduced through the downstream space to an internal space of the resonator.
    Type: Grant
    Filed: October 18, 2011
    Date of Patent: November 25, 2014
    Assignee: Honda Motor Co., Ltd
    Inventor: Yoshiharu Takita
  • Patent number: 8657898
    Abstract: An air filtration unit for conveying bulk granular material from a tank trailer, and uses air pressure to achieve granular flow, the air filtration unit incorporates an intake that induces a spiral flow, the unit incorporates a lid at the back end of the filter housing, and a baffle structure at the intake inlet of the unit, to dampen sound.
    Type: Grant
    Filed: September 22, 2011
    Date of Patent: February 25, 2014
    Assignee: Bulk Tank, Inc.
    Inventor: David E. Sisk
  • Patent number: 8636838
    Abstract: To provide an oxygen concentrator that can reduce pressure loss when suctioning raw air and that can increase the amount of suctioned raw air by an amount of reduction in pressure loss, and moreover that can reduce noise without significantly changing a basic structure of a compressor. The oxygen concentrator includes: a compressor that has a plurality of suction ports suctioning raw air and that generates compressed air by compressing suctioned raw air; a conduit through which the compressed air is sent; a silencer that has a suction side end introducing the raw air and a discharge side end discharging the raw air, with the silencer being connected with the conduit; and a plurality of connection conduits directly connecting the discharge side end of the silencer and the respective suction ports of the compressor.
    Type: Grant
    Filed: November 29, 2010
    Date of Patent: January 28, 2014
    Assignee: Ikiken Co., Ltd.
    Inventors: Hirofumi Watanabe, Keiichi Asakura
  • Patent number: 8409315
    Abstract: A muffler is provided that air or gas flows through to attenuate acoustic oscillations and reduce sound levels. An inner vortex and an outer vortex are created within the device that reduce noise within the rotating flow of gases. The gases flow in the outer vortex from an inlet in a live end of the housing toward a dead end of the housing. A projection is provided in the dead end of the housing that creates a low pressure area that causes the formation of the inner vortex flowing from the dead end toward the live end to an outlet.
    Type: Grant
    Filed: June 20, 2012
    Date of Patent: April 2, 2013
    Assignee: Integradigm Corporation
    Inventors: John L. Brock, Alexander Campbell Thompson, IV
  • Patent number: 8277548
    Abstract: A combined exhaust gas aftertreatment/dust ejector unit (10) is provided for use with a combustion process (14) and an air cleaner (16) of the combustion process (14). The unit (10) includes an elongate housing (30) containing an exhaust gas aftertreatment device (40) and having a radial exhaust gas outlet (34) to direct an exhaust gas flow (12) radially from the housing (30), and a dust ejector (60) including an ejector outlet (62) positioned in the exhaust gas outlet (34). The exhaust gas outlet (34) and the ejector outlet (62) have elliptical shaped cross sections (68,70), with the ejector outlet cross section (70) spaced inwardly from the exhaust gas outlet (34) to define a reduced flow area (72) for the exhaust gas flow (12) to accelerate the exhaust gas flow (12) past the ejector outlet (62).
    Type: Grant
    Filed: September 25, 2009
    Date of Patent: October 2, 2012
    Assignee: Tenneco Automotive Operating Company Inc.
    Inventors: Chris Kleinfeld, Isidro Hernandez, Shi Zheng, Rick Veneziano
  • Patent number: 8262788
    Abstract: An air filter housing (10) for at least one compact air filter element (20) has at least one filter chamber (1) that at the ends has at least one hose connector socket (2, 3), respectively. The compact air filter element (20) is insertable chamber into the filter chamber between the hose connector sockets (2, 3) with sealing of the cross-section of the filter. At least one resonator chamber element (5, 6) is attached to the air filter housing (10) and is connected with the filter chamber (1) by at least one air-conducting channel (7, 8, 9) or slot.
    Type: Grant
    Filed: April 18, 2007
    Date of Patent: September 11, 2012
    Assignee: Mann + Hummel GmbH
    Inventors: Mario Rieger, Werner Blossey
  • Patent number: 8246704
    Abstract: A contained vortices device that allows for the flow of air or gas into and out of the device. In the process of gases moving through the device, a vortex is created within the device that allows for the separation of heavier materials, reduction of the size of any particulates, and the expelling of particulates of a significantly smaller size than was introduced to the device.
    Type: Grant
    Filed: June 3, 2010
    Date of Patent: August 21, 2012
    Assignee: Integradigm Corporation
    Inventors: John L. Brock, Alexander Campbell Thompson, IV
  • Patent number: 7967901
    Abstract: A lubricating liquid separator which can damp compressor pulsation noise effectively and improve the lubricating liquid separating performance without greatly enlarging the size of the separator itself. A demister having a sound absorbing performance is disposed on an outer periphery of a partition plate. Compressed gas which enters the interior of a housing through a compressed gas inlet port flows as rotating flow in a flow path between the partition plate and a portion of a side wall of the housing opposed to the partition plate. Pressure pulsation of the compressed gas is diminished by the demister, and a compressor pulsation noise by the rotating flow of the compressed gas is diminished by the sound absorption of the demister. Further, with the demister, reflection of the compressed gas at a wall surface of the partition plate is suppressed, and scattering of lubricating liquid separated from the compressed gas is suppressed.
    Type: Grant
    Filed: January 2, 2009
    Date of Patent: June 28, 2011
    Assignee: Kobe Steel, Ltd.
    Inventors: Toru Sakatani, Eiji Kanki, Yasumasa Kimura
  • Patent number: 7914597
    Abstract: A dust collector includes turbofans with inducers fixed to the shafts of electric motors. The electric motors are fixed to the rectangular body with mounting legs. The dust collector further includes a single dust collecting filter under the turbofans. The turbofans have a diameter ranging from 40% to 50% of the length of the short side of the body.
    Type: Grant
    Filed: September 15, 2006
    Date of Patent: March 29, 2011
    Assignee: Panasonic Corporation
    Inventors: Kazuo Ogino, Atsushi Nagata, Hitoshi Nozu
  • Patent number: 7819223
    Abstract: The present invention generally relates to the attenuation of vacuum blower noise using a silencer. More particularly, the present invention relates to a low-cost, reliable and efficient silencer for reducing noise levels in adsorption-based gas separation plants from the discharge of the vacuum blower or from the feed blower inlet, to about the 90 dBA level or less, at the silencer opening to the atmosphere. The silencer includes at least one reactive chamber(s) to attenuate low frequency pulsations and at least one absorptive chamber(s) to attenuate noise at medium to high frequency noise.
    Type: Grant
    Filed: April 3, 2006
    Date of Patent: October 26, 2010
    Assignee: Praxair Technology, Inc.
    Inventors: Cem E. Celik, James Smolarek, Michael Victor Barsottelli
  • Patent number: 7753979
    Abstract: A filter assembly for use with compressor assemblies such as oxygen concentrators, ventilators and other breathing apparatus including a compartmented housing member having at least one inlet opening, an outlet opening, a filter member, and an adjustment member associated with the at least one outlet opening for varying the size of the at least one outlet opening for adjusting the amount of ambient air entering the filter assembly.
    Type: Grant
    Filed: February 10, 2006
    Date of Patent: July 13, 2010
    Assignee: Home Health Medical Equipment, Inc.
    Inventor: Michael Andrew Amann
  • Patent number: 7708818
    Abstract: An air filtering assembly for use with oxygen concentrating equipment, the assembly including a filter containment housing, a cover therefore, and a filter support and divider provided therein. A filter rests upon the divider, and below the divider are a series of baffles, that provide a circuitous path for the filtered air to flow, to effect sound dampening, during usage of this filter assembly in combination with the concentrator of an oxygen concentrating apparatus.
    Type: Grant
    Filed: October 11, 2006
    Date of Patent: May 4, 2010
    Assignee: Fenix Medical, LLC.
    Inventor: Steven G. Clark
  • Patent number: 7635402
    Abstract: An air filter system for an internal combustion engine of a vehicle can have an indicator for signaling restricted flow of air through a replaceable air filter member mounted to a filter assembly. At least one sidewall can be associated with the replaceable air filter member to be positioned with an air stream passing through the air filter member. A resettable air filter status indicator can provide a visually perceivable signal external of the filter assembly. The resettable air filter status indicator can be integrally formed in the sidewall for indicating if a mounted air filter member requires replacement in response to air intake differential pressure with respect to atmospheric pressure on a downstream side of air flow through the replaceable filter member being above a predetermined threshold value.
    Type: Grant
    Filed: December 22, 2006
    Date of Patent: December 22, 2009
    Assignee: Nissan Technical Center North America, Inc.
    Inventor: Dan Hoffman
  • Patent number: 7601190
    Abstract: In an air filter system for an internal combustion engine having a fresh air line with an air inlet, a filter housing with an upper housing half and lower housing half, a filter element disposed in the filter housing, a clean air outlet opening with an adjoining clean air line opening into the intake system of the internal combustion engine, and means for damping intake noise, the means for damping the intake noise is a sheet configured and arranged adjacent, and clamped to, the upper housing half opposite the clean air outlet whereby the intake noise vibration energy is absorbed by frictional relative movement between the sheet and the upper housing half, the intake noise being damped by a change in impedance, in particular by a jump in impedance.
    Type: Grant
    Filed: August 1, 2006
    Date of Patent: October 13, 2009
    Assignee: Daimler AG
    Inventors: Thomas Howe, Wolfgang Lewerenz, Berndt Schütz
  • Patent number: 7601191
    Abstract: A system for separating contaminants from an air stream entering a sealed case through a vent fitting communicating to the interior cavity of the case includes a contaminant separator having a housing enclosing a chamber, an inlet and outlet communicating with the chamber, a baffle located in the chamber and producing a constricted fluid flow passageway between the inlet and the outlet.
    Type: Grant
    Filed: August 3, 2006
    Date of Patent: October 13, 2009
    Assignee: Ford Global Technologies, LLC
    Inventors: Timothy A. Droste, Clay F. Ramseyer
  • Patent number: 7513924
    Abstract: A cyclonic separating apparatus for separating solid material from a fluid includes a separating chamber, an inlet communicating with the separating chamber for carrying the fluid with the solid matter entrained therein to the separating chamber, and an outlet for carrying the fluid away from the separating chamber after the solid material has been separated therefrom. The outlet is formed by a conduit communicating with the interior of the separating chamber and having a longitudinal axis. A plurality of grooves are formed in an interior surface of the conduit outlet and extend in the same direction as the longitudinal axis. The presence of the grooves in the outlet has the effect of reducing noise generated by the apparatus when in use and also improves pressure recovery.
    Type: Grant
    Filed: August 9, 2004
    Date of Patent: April 7, 2009
    Assignee: Dyson Technology Limited
    Inventors: Timothy Alexander French, Ricardo Gomiciaga-Pereda, John Paul Rerrie, Andrew Phillip Stokes
  • Patent number: 7488377
    Abstract: A device for sucking in and compressing at least one gas in a fuel cell system has a compressor for the gas connected, at its gas inlet, to a gas filter system via an elastic, sealed gas-routing passage made from textile material.
    Type: Grant
    Filed: April 30, 2003
    Date of Patent: February 10, 2009
    Assignee: Daimler AG
    Inventor: Dirk Schroeter
  • Patent number: 7416580
    Abstract: A filter assembly for removing particulate contaminants and chemical contaminants from an incoming dirty air stream for a fuel cell. The filter assembly also includes a noise suppression element that reduces sound waves or noise emanating from any equipment, such as a compressor. The filter assembly can include a particulate filter portion for removing physical or particulate contaminants, a chemical filter portion for removing chemical contaminants, or can have both portions.
    Type: Grant
    Filed: February 7, 2005
    Date of Patent: August 26, 2008
    Assignee: Donaldsom Company, Inc.
    Inventors: William Nyman, Randy Bourget, Staffan Linnersten, Donald H. White
  • Patent number: 7377954
    Abstract: An air filtration cartridge has annular filter media having a hollow interior and extending axially between first and second distally opposite end caps. The first end cap is an outlet end cap having flow straightening structure integrally formed therewith and spanning the hollow interior. The second end cap is a closed end cap having an interior face having quarter wave resonators formed by blind holes therein.
    Type: Grant
    Filed: January 27, 2005
    Date of Patent: May 27, 2008
    Assignee: Fleetguard, Inc.
    Inventors: Larry T. Gunderson, Christopher E. Holm, Kelly R. Schmitz, Zakir Ahmad Quabili, C. Raymond Cheng
  • Patent number: 7288130
    Abstract: A cassette filter comprising a frame and a pleated filter material that is inserted therein, in addition to a protective grid having passage holes. The protective grid is fastened at a distance from the filter material in the frame and has a flow resistance that is smaller than that of the pleated filter material. The protective grid includes at least one film strip that is bent around the passage holes, said film strip extending parallel relative to the direction of flow of the medium to be filtered, and in that the protective grid recurrently contacts at least one other identically bent film strip outside the passage holes in contact points and is glued to said other film strip in the contact points.
    Type: Grant
    Filed: September 26, 2002
    Date of Patent: October 30, 2007
    Assignee: Carl Freudenberg KG
    Inventors: Renate Tapper, Thomas Schroth, Thomas Caesar
  • Patent number: 7247185
    Abstract: Device for treatment of a gas flow having at least one body (3) that is adapted to cause a conversion in the composition of the gas. The device is characterized in that the body (3) has a modular construction comprising a plurality of sections (26, 26?, 27, 27?, 36) with different internal structures that allow gas to flow through the section, and that the sections (26, 26?, 27, 27?, 36) are arranged so that at least a portion of the gas flows through at least two sections with different internal structures during operation of the device.
    Type: Grant
    Filed: August 15, 2004
    Date of Patent: July 24, 2007
    Assignees: Volvo Technology Corporation, Ford Global Technologies LLC
    Inventors: Edward Jobson, Anna Holmgren Hägg
  • Patent number: 7179326
    Abstract: An oxygen concentrating apparatus 10 for generating oxygen enriched gas by adsorbing and separating nitrogen gas from air, comprises; an oxygen concentrator 40 having an adsorption cylinder filled with adsorbent for adsorbing nitrogen gas, also having an air inlet port 44, an oxygen outlet port 50 and a nitrogen gas outlet port 46; a compressor 30 for supplying compressed air from the air inlet port 44; a sound insulation box 20, which surrounds the compressor 30, for reducing noise generated from the compressor 30, ribs 20a being formed on a side wall of the sound insulation box 20; a cooling fan 36 for introducing air into the sound insulation box 20 so as to cool the compressor 30 by the introduced air; a housing 12 surrounding the oxygen concentrator 40 and the sound insulation box 20; and an exhaust duct 60 arranged in the housing 12, for guiding the exhaust discharged from the cooling fan 36 to the outside of the housing 12.
    Type: Grant
    Filed: March 5, 2003
    Date of Patent: February 20, 2007
    Assignee: Teijin Limited
    Inventors: Hitoshi Nakamura, Masakazu Tagawa, Katsuhiko Okada
  • Patent number: 7156903
    Abstract: A portable pressure swing adsorption apparatus and conservation device for medical use, and a sound enclosure for the apparatus having two isolating sections to enclose the apparatus, the enclosure having an inlet in one of the sections for allowing ambient air into the enclosure and an outlet in the other section for enabling waste gases from the apparatus to exit the enclosure and causing the ambient air and waste gases substantially to change direction within the enclosure before entering or exiting the apparatus.
    Type: Grant
    Filed: September 1, 2004
    Date of Patent: January 2, 2007
    Assignee: AirSep Corporation
    Inventor: Norman R. McCombs
  • Patent number: 7141101
    Abstract: A filter assembly configured for acoustic dampening for use with compressor assemblies such as oxygen concentrators including a compartmented housing member having an inlet opening, an outlet opening, a filter member, and a plurality of noise attenuating members positioned and located therewithin. The configuration of the compartmented housing member in conjunction with the positioning and location of the filter member and the noise attenuating members therewithin all contribute to absorb and dissipate any sound waves generated within the housing member due to air flow movement therethrough. This substantially reduces and minimizes noise associated with the present filter assembly.
    Type: Grant
    Filed: June 17, 2004
    Date of Patent: November 28, 2006
    Assignee: Home Health Medical Equipment Incorporated
    Inventor: Harold P. Amann
  • Patent number: 6936085
    Abstract: A specially arranged vacuum loader and industrial dust collector with a perforated plate tangential cyclone separator is provided to efficiently remove, readily collect, effectively separate and safely dispose of wet, dry and fibrous materials, including liquids and slurries. The special vacuum loader and industrial dust collector has a solids-gas separation compartment comprising a tangential cyclone separator, preferably a perforated plate tangential separator, which is positioned generally alongside and laterally offset from one or more filtering compartments to minimize turbulence and re-entrainment of the collected particulate material.
    Type: Grant
    Filed: March 17, 2003
    Date of Patent: August 30, 2005
    Assignee: DeMarco Maxvac Corporation
    Inventor: Thomas M. DeMarco
  • Patent number: 6911060
    Abstract: The present invention relates to a floor standing treatment device that has a front panel and a mainframe assembly adapted to be removably attachable to the front panel. The mainframe assembly has an integrally molded latching mechanism having a latch and one or more L shaped guides configured to cooperate with one or more pairs stops for limiting lateral movement of the latch. The latch is adapted to engage a portion of the front panel for securely attaching the front panel to the mainframe assembly. The air purifier may also have a cavity positioned along a bottom edge of a back housing to house an electrical cord provided with the air purifier. Additionally, the air purifier may also have an elongated slot positioned at the apex of the mainframe assembly for allowing one or two handed carrying of the air purifier.
    Type: Grant
    Filed: March 20, 2003
    Date of Patent: June 28, 2005
    Assignee: Whirlpool Corporation
    Inventors: Ali Kaylan, Guolian Wu, Armando Luisi, Andrew D. Litch, Paul B. Allard
  • Patent number: 6902597
    Abstract: The present invention relates to a floor standing treatment device that has a mainframe assembly and a back housing removably attachable to the mainframe assembly. The mainframe assembly comprises a fan and a fan scroll through which air is directed. The back housing comprises a one or more side walls wherein a portion of at least one of the sides wall is operable as an extension of the fan scroll. The device may also have a front panel having louvers being adapted to allow optimized air flow into the device.
    Type: Grant
    Filed: March 20, 2003
    Date of Patent: June 7, 2005
    Assignee: Whirlpool Corporation
    Inventors: Guolian Wu, Ali Kaylan, Andrew D. Litch
  • Patent number: 6881237
    Abstract: An air filter housing for an internal combustion engine, which includes an unfiltered air capsule and a filtered air capsule, contains an orifice with perforations which are covered by air-permeable fabric or a sound element. Airborne sound emission occurs through these orifices and through the fabric or the sound element in such a way as to optimize the exterior and interior sounds of the vehicle.
    Type: Grant
    Filed: March 26, 2003
    Date of Patent: April 19, 2005
    Assignee: Dr. Ing. h.c.F. Aktiengesellschaft
    Inventors: Eberhard Storz, Joerg Winkel
  • Patent number: 6824591
    Abstract: An air filter for an internal combustion engine includes an air filter housing, the walls of which encompass a filter compartment in which a filter element is positioned, having an intake and an exhaust. Openings that can be sealed off or opened up based upon the operating conditions of the internal combustion engine are provided in a least one wall of the air filter housing. In this way, effective modulation of induction noise (sound modulation) can be achieved in a simple way and manner.
    Type: Grant
    Filed: February 10, 2003
    Date of Patent: November 30, 2004
    Assignee: Dr. Ing. h.c.F. Porsche Aktiengesellschaft
    Inventors: Roger Holle, Michael Wessels, Bernd Mueller
  • Publication number: 20040182244
    Abstract: The present invention relates to a floor standing treatment device that has a mainframe assembly and a back housing removably attachable to the mainframe assembly. The mainframe assembly comprises a fan and a fan scroll through which air is directed. The back housing comprises a one or more side walls wherein a portion of at least one of the sides wall is operable as an extension of the fan scroll. The device may also have a front panel having louvers being adapted to allow optimized air flow into the device.
    Type: Application
    Filed: March 20, 2003
    Publication date: September 23, 2004
    Inventors: Guolian Wu, Ali Kaylan, Andrew D. Litch
  • Patent number: 6783579
    Abstract: An air cleaner assembly 10 includes a filter located within a housing 12 between an air inlet 20 and outlet 22 for filtering airflow therebetween. The air inlet 20 extends from the housing 12 to communicate with an air intake port located at a vehicle location where fresh air is available. A resonator device 28 is mounted within the housing 12. The resonator device 12 includes a resonator volume 30 and a tuning neck 32. The resonator volume 30 fits into the housing 12 to reduce bulk and readily lend itself to adaptation to space requirements. The tuning neck 32 is mounted within the outlet 22 such that noise and vibration are communicated directly to the resonator device 28.
    Type: Grant
    Filed: October 16, 2002
    Date of Patent: August 31, 2004
    Assignee: Siemens VDO Automotive Inc.
    Inventor: Jason Pettipiece
  • Patent number: 6740149
    Abstract: To enlarge an opening area in an element retainer supporting a clean side of an element, to reduce resistance to air passage and thereby to enlarge intake air quantity. The interior of an air cleaner is surrounded by a case and a lid is partitioned by an element into a dirty side and a clean side. An opening portion on the side of the clean side of an element holder supporting the element is covered by an element retainer, and the element retainer is formed in the shape of a louver.
    Type: Grant
    Filed: August 7, 2001
    Date of Patent: May 25, 2004
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventor: Katsunori Sudoh
  • Patent number: 6726742
    Abstract: An air cleaner intake door is provided. An air cleaner with at least one sidewall and an opening defined in the sidewall has a door mounted over the opening. The door is rotationally movable between an open and a closed position and a cam extends from the door. A spring is in contact with the door for biasing the door towards a closed position.
    Type: Grant
    Filed: August 10, 2001
    Date of Patent: April 27, 2004
    Assignee: Visteon Global Technologies, Inc.
    Inventors: Nick P. Arden, John R. Marsh, Neil McGregor, Wayne E. A. Johnson
  • Patent number: 6680028
    Abstract: A portable air purifier system and apparatus which includes a multi-element filter pack that is replaceable as a single unit, thus facilitating health safety of maintenance personnel. By serially disposing filter elements in order of descending sizes of particulates, filtering is improved. Selectably includable within the filters are materials that are particularly efficacious in removing contaminants such as acetone, ammonia, ozone, carbon monoxide, carbon dioxide, ethanol, methane, ethane, methanol, formaldehyde, hydrogen sulfide and other hazardous substances. By including an ultra-violet light source directed onto an activated charcoal layer, germicidal action is facilitated, and noise is abated through the advantageous employment of an expanded plenum and multiple right angle bends in air passageways.
    Type: Grant
    Filed: December 8, 1999
    Date of Patent: January 20, 2004
    Assignee: Clean Air Research & Engineering, Inc.
    Inventor: Charles D. Harris
  • Publication number: 20030221562
    Abstract: An air cleaner and resonator assembly is formed from a lower shell portion and an upper shell portion that are joined together to define an interior cavity having an inlet through which air is drawn. An exit tube, formed within the lower shell portion, directs air from the inlet to the engine. A middle shell portion is positioned within the inter cavity and is joined to both the upper and lower shell portions. A lower portion of a resonator is molded into the lower shell portion and an upper portion of the resonator assembly is molded into the middle shell portion. The upper portion is aligned with the lower portion and the middle and lower shell portions are welded together to form a sealed resonator chamber that attenuates engine noise. The upper and lower shell portions are then welded together to form the air cleaner and resonator assembly. Air filters are installed within the interior cavity and are selectively accessible through movable covers installed in the upper shell portion.
    Type: Application
    Filed: May 22, 2003
    Publication date: December 4, 2003
    Applicant: Siemens VDO Automotive, Inc.
    Inventor: Stephen Francis Bloomer
  • Patent number: 6626984
    Abstract: An apparatus for removing dust and fumes from a flow of air, particularly a flow of air exhausted from an industrial work area. There is a large, cylindrical filter element mounted within a cylindrical collector barrel so as to define an annular flow space between the two. A vane assembly is mounted at the top of the collector barrel for directing the incoming flow of air along a generally cyclonic path through the flow space, so that sparks and heavy particulates are forced outwardly away from the surface of the filter element, thereby increasing filter life and reducing the chance of fire. The filter element and collector barrel are mounted atop a cabinet which encloses a blower and a silencer section. The silencer section includes one ore more chambers having interior walls for redirecting the flow of air exiting the blower, and the walls are lined with an acoustic insulation material for absorbing sound energy as the flow of air is redirected, thus reducing noise emissions from the assembly.
    Type: Grant
    Filed: October 26, 2000
    Date of Patent: September 30, 2003
    Assignee: FSX, Inc.
    Inventor: R. Drew Taylor
  • Patent number: 6616722
    Abstract: A portable air cleaner designed to remove particles and unwanted gases from a room to provide for a healthier and cleaner environment. The portable air cleaner includes a high air volume circulating design and operates quietly and efficiently. The air exhaust of the air cleaner includes a plurality of arcuate vanes radiating outwardly from the interior of the air cleaner. The vanes are disposed in a non-symmetrical arrangement the air exhaust to reduce pressure drop and to minimize operation noise.
    Type: Grant
    Filed: January 11, 2002
    Date of Patent: September 9, 2003
    Assignee: HMI Industries, Inc.
    Inventor: Mark A. Cartellone
  • Patent number: 6576028
    Abstract: A device to be interposed within the conduit of a fluid flow system to reduce or eliminate the noise associated with such systems. The device is made up of at least two cylindrical chambers, one within the other. The inner chamber is closed at the top, has a fluid entry port at the bottom, and a plurality of fluid exit nozzles symmetrically arranged about the side wall. The outer chamber is closed at the bottom and has a fluid exit port at the top. The entry port, exit port and inner chamber as well as the fluid flow system conduit have the same internal cross sectional areas. The sum of the cross sectional areas of the exit nozzles is equal to the cross sectional area of the conduit. The addition of a liquid exit port at the bottom of the outer chamber allows the device to also function to separate a gas from a fluid mixture. Multiple units may be utilized within a fluid flow system.
    Type: Grant
    Filed: October 12, 2001
    Date of Patent: June 10, 2003
    Inventor: Miguel Radhamés Santos
  • Patent number: 6569217
    Abstract: A specially arranged industrial dust collector with multiple filtering compartments is provided which is efficient, effective, and economical. The special industrial dust collector has a solids-gas separation compartment which is positioned generally alongside and laterally offset from multiple filtering compartments. The multiple filtering compartments can contain cartridge filters or other filters. The solids-gas separation compartment can contain a tangential cyclone separator or another type of solids-gas separator.
    Type: Grant
    Filed: May 10, 2000
    Date of Patent: May 27, 2003
    Inventor: Thomas M. DeMarco
  • Patent number: 6551385
    Abstract: A separator for substantially resolving at least one component of a process stream, such as from the exhaust of an internal combustion engine. The separator includes a body defining a chamber therein. A nozzle housing is located proximate the chamber. An exhaust inlet is in communication with the nozzle housing and the chamber. A nozzle assembly is positioned in the nozzle housing and includes a nozzle moveable within and relative to the nozzle housing. The nozzle includes at least one passage formed therethrough such that a process stream entering the exhaust inlet connection passes through the passage formed in the nozzle and imparts a substantially rotational flow to the process stream as it enters the chamber. A positioning member is configured to position the nozzle relative to the nozzle housing in response to changes in process stream pressure thereby adjusting flowrate of said process stream entering into the chamber.
    Type: Grant
    Filed: December 11, 2001
    Date of Patent: April 22, 2003
    Assignee: Bechtel BWXT Idaho, LLC
    Inventors: Terry D. Turner, Bruce M. Wilding, Michael G. McKellar, Kevin T. Raterman
  • Publication number: 20030070553
    Abstract: A device to be interposed within the conduit of a fluid flow system to reduce or eliminate the noise associated with such systems. The device is made up of at least two cylindrical chambers, one within the other. The inner chamber is closed at the top, has a fluid entry port at the bottom, and a plurality of fluid exit nozzles symmetrically arranged about the side wall. The outer chamber is closed at the bottom and has a fluid exit port at the top. The entry port, exit port and inner chamber as well as the fluid flow system conduit have the same internal cross sectional areas. The sum of the cross sectional areas of the exit nozzles is equal to the cross sectional area of the conduit. The addition of a liquid exit port at the bottom of the outer chamber allows the device to also function to separate a gas from a fluid mixture. Multiple units may be utilized within a fluid flow system.
    Type: Application
    Filed: October 12, 2001
    Publication date: April 17, 2003
    Inventor: Miguel Radhames Santos
  • Patent number: 6517614
    Abstract: A multi-component hollow structure including at least two synthetic resin housing parts (1, 3) with corresponding sealing surfaces (2, 4), and at least one half wall per housing part, in which the half walls of one housing part meet corresponding half walls of the other housing part in order to reinforce the hollow structure, and in which the corresponding sealing surfaces (2, 4) and the half walls (6, 7) are joined using a friction force, such as vibration welding or ultrasonic welding. A method for producing such multi-component hollow structures is also disclosed.
    Type: Grant
    Filed: February 1, 2000
    Date of Patent: February 11, 2003
    Assignee: Filterwerk Mann & Hummel GmbH
    Inventors: Arthur Klotz, Stephan Mengele
  • Patent number: 6478838
    Abstract: An air treatment appliance for treating surrounding air including a body. A spider-mount mounted to the body has a motor mounted thereto in cantilever fashion. A fan attached to the motor may be a radial fan, and is operable to draw in surrounding air and cause it to flow through the appliance. A grommet between the motor and the spider-mount dampens vibrations from the motor. A filtering mechanism in the path of the airflow helps filter out undesirable material from the surrounding air. A radial airflow guide downstream from the fan efficiently guides the airflow to be expelled in a predetermined direction. The motor is at least partially accommodated by the spider-mount and the fan. The apparatus results in reduced noise and vibration during operation of the appliance.
    Type: Grant
    Filed: January 10, 2001
    Date of Patent: November 12, 2002
    Assignee: Whirlpool Corporation
    Inventors: Anne Margaret McSweeney, James Jacob Morton, Jr., Dan Roger Maxwell, Guolian Wu, Murray Malone Mallard, Christopher Paul Campbell
  • Patent number: 6451097
    Abstract: An air treatment plant includes a waste gas vent connected to structure (50) for attenuating the noise conducted by this waste gas. The noise attenuation structure (50) is a substantially closed and at least partially buried enclosure (52). The invention applies especially to plants for separating air by pressure swing adsorption.
    Type: Grant
    Filed: November 13, 2000
    Date of Patent: September 17, 2002
    Assignee: L'Air Liquide Societe Anonyme a Directoire et Conseil de Surveillance pour l'Etude et l'Exploitation des Procedes Georges Claude
    Inventors: Philippe Andreani, Christian Berta, Thomas Wellnitz
  • Patent number: 6361590
    Abstract: A portable air cleaner including a housing defining an air inlet, an air outlet, and an air flow path therebetween, a centrifugal blower retained within the air flow path and operable to draw air through the inlet and a filter retained within the housing and disposed to transmit air circulating in the air flow path out of the outlet. Also included is a conveyor surrounding the blower and defining a scroll shaped passage having one end disposed to receive air from the blower and an opposite end disposed to discharge air into the filter, the conveyor being shaped and arranged to obstruct all rectilinear paths between the blower and the opposite end.
    Type: Grant
    Filed: January 14, 2000
    Date of Patent: March 26, 2002
    Assignee: Honeywell International Inc.
    Inventors: Duane L. Gilbert, Jr., Stephen M. Gatchell
  • Patent number: 6325844
    Abstract: A filter and muffler device for use with a vacuum mechanism having an outlet port is particularly designed to muffle sound exiting from the outlet port as well as to filter the outlet exhaust. The device includes a filter element which is generally rectangular in plan view and which has opposed lateral sides and opposed longitudinal sides. The filter element has a direction of filtration from a planar bottom to a planar top thereof, and is preferably a HEPA type filter. The device also includes a housing in which the filter element is located. This housing includes a generally flat upper wall parallel to and spaced from the top of the filter element; respective lateral and longitudinal side walls connected to the upper wall and extending generally parallel to the respective lateral and longitudinal sides of the filter element; and a lower wall spaced from the upper wall, extending between the lateral and longitudinal side walls of the housing, and located opposite the bottom of the filter element.
    Type: Grant
    Filed: May 31, 2000
    Date of Patent: December 4, 2001
    Assignee: Florida Pneumatic Manufacturing Corporation
    Inventors: Donald R. Mead, William S. Lindsay
  • Patent number: 6228154
    Abstract: A discrete pod gas scrubber system for removing contaminants from the air of a work area, such as a paint spray booth. Each scrubber pod includes an inlet section having opposed converging planar walls and side walls, an intermediate section having opposed diverging walls and side walls communicating with the inlet section through a reduced diameter venturi, and an outlet section having a bottom wall perpendicular to the longitudinal axis of the scrubber pod, a diverging top wall and an end wall. The end wall includes an orifice opening and orifice plates for adjusting the orifice opening and the combined lengths of the aligned scrubber pods are between fifty and ninety percent of the total length of the scrubber system, more preferably between sixty percent and eighty five percent of the total length. The scrubber system of this invention significantly reduces the noise generated in the work area normally located above the gas scrubber system.
    Type: Grant
    Filed: December 23, 1999
    Date of Patent: May 8, 2001
    Assignee: Durr Industries, Inc.
    Inventors: James L. Pakkala, Guang Yu, David J. Cole
  • Patent number: 6171380
    Abstract: The air drawn into a diesel engine serially passes through a filter and a cavity, which acts as an acoustic attenuator, before being supplied to the cylinders of the diesel engine. In the cavity the air is in a heat transfer relationship with a heat sink for the electronic components of a microprocessor control. The electronic components may be located in the plenum cavity or in a separate chamber but must have a heat transfer relationship with the cavity, such as through a common wall on which the electronic components are mounted. A heat sink may extend into the cavity.
    Type: Grant
    Filed: March 12, 1999
    Date of Patent: January 9, 2001
    Assignee: Carrier Corporation
    Inventors: Richard J. Wood, Philip L. Lavrich, Patrick C. Marks, Michael F. Taras, Walter E. Lare, Jr.