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| Number | Title | Issue Date |
| 7998260 | Cyclone silencer of cleaner and dust removing device having the same A cyclone silencer of cleaner includes an outlet pipe(2) partially inserted into a cyclone cylinder (1). Ribs (3) are arranged on the lower edge of said outlet pipe (2) and extend downwardly to reduce noise. ... | 08/16/2011 |
| 7488377 | Device for the intake and compression of at least one gas in fuel cell system 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. ... | 02/10/2009 |
| 7438737 | Vacuum cleaner A cyclone vacuum cleaner including a plurality of cyclone chambers arranged in a group. The cyclone chambers are configured such that frequency characteristics of noises generated from respective cyclone chambers are different from each other. ... | 10/21/2008 |
| 7416580 | Filter assemblies and systems for intake air for fuel cells 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... | 08/26/2008 |
| 7396390 | Oxygen enrichment apparatus An oxygen enrichment apparatus includes an oxygen enriching unit for generating oxygen-enriched air and a discharge unit for discharging the oxygen-enriched air transferred from the suction unit. The oxygen-enriched air generated by the oxygen enriching unit has an ... | 07/08/2008 |
| 7377954 | Performance air filtration cartridge 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 spanni... | 05/27/2008 |
| 7332016 | Particulate trap with selective blocking element A particulate trap has a housing with an inlet and an outlet. The particulate trap also has a plurality of fluidly isolated filters stacked within the housing, between the inlet and the outlet. The stacked plurality of filters have a stack direction and a transverse... | 02/19/2008 |
| 7276098 | Tangential in-line air filter A tangential air filter configuration is designed for applications where there is a potential for a pollutant to back flush out. The tangential in-line air filter reduces air resistance and prevents back flow, allowing the air to traverse through a forced air system... | 10/02/2007 |
| 7240769 | Exhaust volume An exhaust volume (20) of the type including a muffler (24) having a casing provided with an inlet (29) and an outlet (30) for passing gases and adapted to enable the muffler to be mounted in an exhaust system (14). The volume furt... | 07/10/2007 |
| 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 engine arranged in the motor vehicle, and an outlet space, which is acous... | 03/13/2007 |
| 7179326 | Oxygen concentration apparatus 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 ... | 02/20/2007 |
| 7174872 | 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 from the air intake port, with respect to walls partitioning the air in... | 02/13/2007 |
| 7141101 | Filter assembly with noise attenuation 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 pos... | 11/28/2006 |
| 7138008 | Filter assemblies and systems for intake air for fuel cells 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... | 11/21/2006 |
| 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 from the air intake port, with respect to walls partitioning the air in... | 09/19/2006 |
| 7069893 | Air intake system A novel air intake system which is suitable for at least substantially reducing the inadvertent intake of water with ambient air into an air compressor or other operational component of a fuel cell or internal combustion engine is disclosed. The air intake system ty... | 07/04/2006 |
| 7021997 | Multifunctional whetstone Provided is a multifunctional whetstone comprising a handle comprising a rear cutter, top slits of different width, and a bottom magnet; a head comprising an open mouth including a curved recess for gripping a sheet of paper and a bottom opening with two concealed a... | 04/04/2006 |
| 7022152 | Air cleaner device for vehicle An air cleaner device 41 which includes a main air cleaner 56 and a sub air cleaner 67 which is connected to the main air cleaner 56, and the sub air cleaner 67 is arranged parallel to the main air cleaner 56 in the longitud... | 04/04/2006 |
| 6994738 | Snow filter A snow filter for an airplane cabin air supply system is provided with a coned inlet screen which allows some air to pass through and some snow to be retained. The coned configuration diverts much of the air and snow toward a downstream conical retaining and collect... | 02/07/2006 |
| 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 the spark arrester body and is mounted on the spark arrester such that... | 11/29/2005 |
| 6936085 | Vacuum loader 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... | 08/30/2005 |
| 6893487 | Power generation aftertreatment system having a particulate filter dimensioned to be interchangeable with a muffler A power generation system has a power source and an aftertreatment system connected to the power source. The aftertreatment system is adapted to treat an exhaust of the power source. The aftertreatment system has a particulate filter that is dimensioned to be interc... | 05/17/2005 |
| 6881237 | Air filter for an internal combustion engine 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 t... | 04/19/2005 |
| 6866700 | Filter housing assembly for use in oxygen concentrators and other compressors A filter housing assembly including a substantially frusto-conical shaped housing member having an open end portion and a substantially closed dome shaped portion, the housing member being adaptable for receiving a filter member therewithin and having at least one o... | 03/15/2005 |
| 6797027 | Filter assemblies and systems for intake air for fuel cells 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... | 09/28/2004 |
| 6780534 | Filter assembly for intake air of fuel cell 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 noise emanating from any equipment, such as a compressor. ... | 08/24/2004 |
| 6761748 | Air filtration system An air filtration system for purifying an air stream, such as the intake air for an internal combustion engine, including a system plate (10), an unfiltered air zone (13), a filter housing (12) containing a filter element (16), and a filt... | 07/13/2004 |
| 6726742 | Air cleaner with a secondary intake 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 sp... | 04/27/2004 |
| 6626984 | High volume dust and fume collector 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 spac... | 09/30/2003 |
| 6605131 | Integrated active noise control with self-cleaning filter apparatus An air induction system with active noise control includes a self-cleaning air filter that is integrated within an air intake housing. The self-cleaning air filter filters out contaminants such as dust and dirt particulates from air flowing through the in... | 08/12/2003 |
| 6569217 | Industrial dust collector with multiple filter compartments 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 alon... | 05/27/2003 |
| 6551389 | Sound transmitting air filter An air filter (10) for an internal combustion engine of a motor vehicle designed to transmit sound into the passenger compartment or driver area in order to inform the driver of the operating state of the engine. The air filter includes an air filter hous... | 04/22/2003 |
| 6530984 | Air cleaner resonator mounting system and cover An air cleaner includes a slide retention structure which engages a sliding resonator volume. The volume slides along the slide retention structure into an assembled position. Once assembled, a tuning tube engages an aperture in the volume, the volume and... | 03/11/2003 |
| 6517614 | Plastic hollow structure 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 wal... | 02/11/2003 |
| 6503303 | Enclosure for an air aspirating machine An enclosure for an air aspirating machine, such as a compressor 11 for a fuel cell drive 13, which represents a closed volume, so that said volume can be used acoustically for the air that is being drawn in. An air intake 17 is extended into the enclosur... | 01/07/2003 |
| 6478838 | Airflow system 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... | 11/12/2002 |
| 6451097 | Air treatment plant provided with noise attenuation means 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 ... | 09/17/2002 |
| 6382161 | Air induction system for internal combustion engine An air induction device (11) for an internal combustion engine including an air filter housing (12) with an open induction tube (13) leading away from it and a supplementary induction tube (14) having a closing element, preferably in the area of its end o... | 05/07/2002 |
| 6332308 | Air filtration device for use with roof drill The air filtration device for use with a roof drill has an air intake block attached to a vertical support abutting the mine roof lateral to the drill hole. A flexible hose attached to a dust filter and a vacuum source for filtering and collecting dust fr... | 12/25/2001 |
| 6136077 | Steam absorption apparatus An apparatus which absorbs gas that has been discharged from a pipe at a high velocity and which releases the gas to the atmosphere at a reduced velocity and with relatively low noise. The apparatus includes a container which has a container interior, a c... | 10/24/2000 |
