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| Number | Title | Issue Date |
| 7326269 | NBC filtration unit providing unfiltered and filtered air paths A filtration unit for use with an environmental control unit (ECU), usually a portable ECU, which includes at least two air flow paths wherein at least one of the air flow paths allows for use of air which has not passed through a nuclear, biological, and chemical (... | 02/05/2008 |
| 7294162 | Exhaust filter An exhaust filter having a pleated filter media mounted between end caps is disclosed herein. The filter has a construction suitable for high temperature environments such as engine exhaust systems. ... | 11/13/2007 |
| 7290546 | Nasal mask A nasal mask assembly for preferred use in CPAP treatment. The mask assembly comprises a central body, a face cushion, a forehead support and a gas inlet. The gas inlet is rotatably connected to the central body, and the forehead support is pivotally connected to th... | 11/06/2007 |
| 7287301 | Utility vacuum A utility vacuum that may be configured to employ a disposable bag or removable and reusable container for the collection of dirt and debris that are drawn into the utility vacuum. The utility vacuum may employ one or more movable legs that are movable between an ex... | 10/30/2007 |
| 7175681 | Apparatus for removing fine particles in exhaust gas The present invention provides a fine particle removing apparatus which can efficiently burn collected fine particles in exhaust gas, has a simple configuration and can be readily controlled. In this fine particle removing apparatus, a filter unit which collects fin... | 02/13/2007 |
| 6976488 | Medication bypass heat and moisture exchange unit The present invention provides a heat and moisture exchange (HME) unit that includes a housing having a fibrous media in the housing that is designed to absorb and retain moisture and heat from exhaled air passing through the housing. The HME unit is designed to tra... | 12/20/2005 |
| 6918952 | Quick-change filter system and a base and a quick-change filter intended for such a system A quick-change filter system provided with at least one base and at least one quick-change filter, which base is provided with a filter coupling provided with a gas inlet stub for connection to an inlet of the filter and with a gas outlet stub for connection to an o... | 07/19/2005 |
| 6319296 | Air system bypass for oil separator An oil separator such as used in an air charging system includes a bypass assembly. During normal operation, airflow from an inlet to an outlet passes through the filter to remove oil and oil vapor from the compressed air. If a restriction or blockage occ... | 11/20/2001 |
| 6293321 | Wood planing machine with a sawdust-collecting mechanism A wood planing machine includes a base, a cutter carriage, a motor housing mounted on the cutter carriage and having a vent port, a motor disposed in the motor housing, a rotary cutter mounted on the cutter carriage, a shaft extending from the rotary cutt... | 09/25/2001 |
| 6149729 | Film forming apparatus and method A film forming apparatus includes a chamber in which a thin film is formed on a semiconductor wafer by supplying a process gas, the interior of which is then cleaned by a cleaning gas, while the gas in the chamber is exhausted by a vacuum system. The vacu... | 11/21/2000 |
| 6010547 | Counterflow type particulate matter filter trap system having metal fiber filter Disclosed is a counterflow type filter trap system for filtering particulate matters from engine exhaust gases. A controller for receiving and sending information signals, is included. A metal fiber filter for capturing particulate matters included in the... | 01/04/2000 |
| 5738706 | Smoke filtration unit and method of using same The smoke filtration unit described herein has an internal cylindrical duct for ducting exhaust smoke from an exhaust flue to a shutter pivotally mounted within the cylindrical duct. The shutter can move between at least two positions. The shutter, when l... | 04/14/1998 |
| 5620490 | Diesel particulate filter apparatus This diesel particulate filter apparatus comprises a main filter, a sub-filter provided in a central portion of the main filter, and a bypass cylinder interposed between the main filter and sub-filter. A filter body constituting the main filter is made of... | 04/15/1997 |
| 5458673 | Exhaust gas particulate purifying process for internal combustion engine For regenerating an exhaust gas particulate collecting filter, there is provided an exhaust gas particulate purifying process in which damage to the filter caused by a thermal action can be prevented and further electric power can be saved when an electri... | 10/17/1995 |
| 5357755 | Trap apparatus with bypass Trap muffler apparatus with bypass around a trap core is disclosed. A preferred bypass arrangement utilizing a tubular shutter valve system is described. Forward or reverse regeneration are possible. Bypass to atmosphere without filtration is avoided with... | 10/25/1994 |
| 5212948 | Trap apparatus with bypass Trap muffler apparatus with bypass to a common reactive acoustic element is disclosed. Bypass structure varies from external bypass to a common acoustic element to annular bypass of the ceramic filter to axial bypass through the middle of an annular ceram... | 05/25/1993 |
| 5174797 | Fiber collector A fiber collector collects fiber from a moving airflow having entrained fibers. A primary plenum has a fiber collection zone in its lower portion. Adjacent screens downstream of the primary plenum are slanted with respect to the primary plenum so that fib... | 12/29/1992 |
| 5050487 | Heating/air conditioning system for a motor vehicle with absorption filter In a heating/air conditioning system for a motor vehicle, with an exchangeable and selectively bypassable absorption filter which is arranged in a channel shaped housing and through which fresh air and/or circulating air can flow, a high degree of absorpt... | 09/24/1991 |
| 5048287 | Tuned exhaust processor assembly An exhaust processor is provided for filtering particulate matter from a combustion product. The exhaust processor includes a housing providing a main passageway having a substrate mounted therein for solid particle filtration. The housing also provides a... | 09/17/1991 |
| 5009065 | Tuned exhaust processor assembly An exhaust processor is provided for filtering particulate matter from a combustion product. The exhaust processor includes a partition situated inside a housing to form a first flow passage and a second flow passage in an upstream portion of the housing.... | 04/23/1991 |
| 4961314 | Tuned exhaust processor assembly An exhaust processor is provided for filtering particulate matter from a combustion product. The exhaust processor includes a partition situated inside a housing to form a filtering region and a bypass region in an upstream portion of the housing. A subst... | 10/09/1990 |
| 4945722 | Soot filtering unit for the exhaust of a diesel internal combustion engine and method for regenerating the filters thereof A soot filtering unit in the exhaust gas system of a diesel internal combustion engine that includes at least two parallel soot filters. For regeneration, a regeneration device, having at least one burner and control flap, is provided upstream from the so... | 08/07/1990 |
| 4940213 | Exhaust processing apparatus An exhaust processing apparatus comprises a cracking furnace for cracking and solidifying exhaust discharged from a reactor for forming crystals on a semiconductor substrate, a first collecting device for collecting relatively large components solidified ... | 07/10/1990 |
| 4906257 | Method of and apparatus for treating waste gas from semiconductor manufacturing process A method of and apparatus for treating waste gas from semiconductor manufacturing equipment with a dry solid absorbent. A bypass pipe which is equipped with a bypass valve is provided between inlet and outlet pipes of a container packed with the absorbent... | 03/06/1990 |
| 4895644 | Fluid supply and recirculation system A fluid recirculation and makeup supply system having an alternate purification loop (84) in parallel with a portion of the recirculation loop (26). In the alternate purification mode of operation of the system a predetermined portion of the recirculated ... | 01/23/1990 |
| 4875336 | Exhaust gas emission control device for diesel engine An exhaust gas emission control device comprising a filter provided in the exhaust passage, a heater provided near the filter, first and second passage bypassing the filter and the heater, a single first valve upstream of the filter a single second valve ... | 10/24/1989 |
| 4747853 | Pressure control A pressure control arrangement for a fluid line in a system, particularly a pressure swing adsorption system, wherein, in the event of a valve or control system malfunction, there is a risk of the fluid line being subject to an overpressure in an excess o... | 05/31/1988 |
| 4702269 | By-pass valve The present invention is directed to a valve having a plug with a pair of passages therethrough and a housing with ports which communicate with the passages of the plug in at least two orientations to form flow paths through the valve. The valve includes ... | 10/27/1987 |
| 4682993 | Fluid filter system with replaceable filter element An air filter system, with a replaceable cartridge, suitable for use in controlled environment systems such as computer information storage and retrieval devices. The system provides ease of maintenance, while providing a highly sanitized air stream to an... | 07/28/1987 |
| 4674278 | Safety exhaust system with switching for an internal combustion engine A safety exhaust system is provided for an internal combustion engine comprising a device for switching the combustion gases of an internal combustion engine towards one or other of two cases, said device being controlled by a shaft integral with locking ... | 06/23/1987 |
| 4650572 | Filter device having baffle retainer for deflecting fluid flow and preventing filter clogging A filter device for removing fine particles in the fluid line, such as in a power steering system including a housing having an inlet body wall and an outlet body wall connecting respectively with an inlet tube and an outlet tube. A perforated support pla... | 03/17/1987 |
| 4581135 | Self-cleaning fluid filter with a drain A self-cleaning renewable fluid filter that flushes a permanent filter media while the used oil is pumped out by the engine oil pump through a drain in the housing. The fluid filter has an inlet and a drain, a center core with an outlet, a drain valve nor... | 04/08/1986 |
| 4576619 | Dust recovery apparatus Dust recovery apparatus is disclosed which recovers air-entrained dust in a high state of purity. The apparatus comprises a housing capable of sustaining at least slight positive pressure and suitable for accommodating powder processing machinery, an air ... | 03/18/1986 |
| 4544388 | Apparatus for periodically oxidizing particulates collected from exhaust gases An apparatus is disclosed for regenerating a filter trap used to collect particulates from the exhaust gas of an internal combustion engine. The apparatus comprises: (a) an assembly providing a flow of a heat transfer medium through the filter trap: (b) a... | 10/01/1985 |
| 4529514 | Filter assembly with shut off and filter element therefor A filter assembly includes a slidable tubular member which in a first position provides for flow communication from an inlet passage through a filter element to a filter chamber outlet. Upon removal of the filter housing and filter element the tubular mem... | 07/16/1985 |
| 4523931 | Fabric filter system with improved gas bypass means for removing particulate matter from gases An internal flue gas bypass system is provided in a baghouse filter system having a plurality of filter compartments each having a gas inlet for receiving particulate-laden gas, a gas outlet for delivering filtered gas, fabric filter means between the gas... | 06/18/1985 |
| 4522639 | Unified filter and connector housing assembly incorporating a diversion valve A unified filter and connector housing (24) incorporating a diversion valve assembly (74), the housing assembly being usable with a protective breathing mask assembly (12) of the type requiring separate breathing gas and ventilating gas supply lines (18 a... | 06/11/1985 |
| 4517083 | Filter device having relief valve for use in power steering system A filter device for use in the return line of a power steering system for filtering the fine metal particles in the power steering fluid, thereby minimizing contamination, reducing friction and maintaining normal fluid temperatures. A perforated support p... | 05/14/1985 |
| 4509963 | Industrial vacuum cleaner A vacuum cleaner and refuse and debris collection and disposal device and system utilizing a vacuum cleaning unit, with intake for both wet and dry materials, utilizing a motor-driven blower to create a vacuum in a sealed vacuum chamber and a separate int... | 04/09/1985 |
| 4494375 | Filtration system for diesel engine exhaust-I A filtration system is disclosed which removes particulates from the exhaust gas of a diesel engine. The system has (a) a filter element, (b) oxidation means for conducting a flow of heated gas through at least a portion of the filter element, the heated ... | 01/22/1985 |
