Including Expansion Chamber Patents (Class 55/319)
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Patent number: 4848989Abstract: An in-line filter device including a double-walled tube filter assembly, and an upper cap and a lower cap which are held in communication with upper and lower open ends of the filter assembly. The filter assembly has an inner tube and an outer tube which are disposed in radially spaced, and coaxial relation with each other, so as to define an annular space therebetween. One of the inner tube and the annular space is filled with a first pad adapted to coalesce vapor in compressed air passing therethrough, into droplets, while the other of the inner tube and the annular space is filled with a second pad adapted to vaporize residual liquid particles remaining in the compressed air which has passed the first pad. The upper cap has an inlet connected to the upstream side of a compressed air conduit and communicating with the first pad incorporated within the double-walled tube filter assembly. The upper cap further has an outlet connected to the downstream side of the conduit and communicating with the second pad.Type: GrantFiled: August 28, 1987Date of Patent: July 18, 1989Assignees: Maeda Shell Service Co., Ltd., J&M Co., Ltd.Inventor: Sadao Maeda
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Patent number: 4848988Abstract: A compressed air dehumidifying device, comprising: an external cylinder having an inlet port for the compressed air fed from the compressor, a passageway and an outlet port for the clean compressed air dehumidified and purged of oil, dirt, and dust, and a drain hole for discharging the moisture, oil, dirt, and dust out of the device; and an internal cylinder having a passageway connected to the inlet port for compressed air, orifices for explosively injecting the compressed air that are connected to the passageway, and inverted-funnel-shaped injection tubes adjoining the respective orifices and the diameter of which is gradually increased along the axis, and being formed in the external cylinder.Type: GrantFiled: February 2, 1988Date of Patent: July 18, 1989Inventor: Hisamoto Suzuki
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Patent number: 4842622Abstract: The apparatus includes a swirl vanes device for reducing the velocity of exhaust fumes fed into an enclosed container with the accompanying direction and volume changes enhancing the separation of the exhaust into gas, liquid, and solid components. Solids and liquids collect in the container and gas passes out through a demister filter. With engines having a pressurized crankcase exhaust and an air box outlet, an eductor assembly employing a spring-biased check valve is used to control the entrance of crankcase exhaust into an inlet chamber having a low pressure created by the volume expansion of inlet air box exhaust. A liquid overflow system has a floatable ball valve to remove liquid from the container under conditions of high liquid levels. An inlet and outlet manifold houses a spool valve for the selective control and isolation of the inlet and outlet openings of the container so that the container may be pressurized to remove the liquid collected therein.Type: GrantFiled: March 31, 1988Date of Patent: June 27, 1989Inventor: Robert H. Wamsley, Jr.
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Patent number: 4810269Abstract: A portable and mobile multi-stage filtering system is disclosed capable of filtering particulate of the size of one micron. An external canister filter capable of filtering down to at least 0.5 microns is connected to and located external to the cabinet of the airtight filtering system. The cabinet contains a centrally located high speed motor driving a high capacity vacuum pump completely surrounded by thermal and acoustical insulation. The air filtering path includes a plurality of baffles defining a serpentine path for exhausting the air into a series of plenums of increasing volume which communicates with a ULPA filter capable of filtering down to 0.12 micron. The plenums are also surrounded by acoustical and thermal insulation which has the effect of lowering the noise of the filtering system and increasing the efficiency of the total system.Type: GrantFiled: April 27, 1988Date of Patent: March 7, 1989Assignee: Stackhouse Associates, Inc.Inventors: Wyman H. Stackhouse, Ian M. Williamson
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Patent number: 4776183Abstract: A lateral type accumulator includes a hermetic container which is divided into an intake cell, a discharge cell and a storage chamber between the cells in a horizontal direction by an intake side plate and a discharge side plate, and intake pipe connected to the intake cell, a discharge pipe connected to the discharge cell, and a gas fluid passage from the intake cell to the discharge cell through the intake side and the discharge side plates. The mixture of a lubricating oil and a refrigerant including a gas element and a liquid element is drawn into the storage chamber through the intake pipe and the intake cell, and the mixture is separated into the gas element and a remaining mixture in the storage chamber, hereupon the gas element is discharged from the discharge pipe through the discharge cell along the gas fluid passage. The surface level of the lubricating oil and refrigerant is maintained greater than that in the intake and the discharge cells during the operation of an refrigerating circuit.Type: GrantFiled: December 30, 1987Date of Patent: October 11, 1988Assignee: Kabushiki Kaisha ToshibaInventor: Kaoru Okoma
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Patent number: 4769050Abstract: A liquid separator assembly for separating a liquid from a liquid-entrained vapor is provided. The separator assembly includes a housing having an interior wall that is configured to define a containment chamber. A downstream pipe is provided that is coupled to the housing and is in fluid communication with the containment chamber to discharge vapor from the housing. An upstream pipe is provided that is coupled to the housing and is in fluid communication with the containment chamber to introduce the liquid-entrained vapor into the housing. The upstream pipe is formed to include an expansion mechanism in the containment chamber for expanding and cooling the liquid-entrained vapor discharged in the containment chamber to induce condensation of the liquid entrained in the vapor onto the interior wall of the housing. A liquid return conduit is provided for conducting condensed liquid collecting in the containment chamber to a point of use.Type: GrantFiled: May 20, 1987Date of Patent: September 6, 1988Assignee: Arvin Industries, Inc.Inventors: Frank W. Shaw, Richard F. Little
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Patent number: 4762540Abstract: Noise suppression and particle separation apparatus for flows of high pressure, high velocity, particle-laden, gaseous fluid, such as geothermal steam, comprises a gaseous fluid conduit that has axially installed around its discharge end a larger diameter, cylindrical inner expansion chamber having a number of flow-dividing fluid discharge openings at which fluid flow diffusing elements are connected for receiving and diffusing the flow of gaseous fluid from the apertures. A still-larger diameter, cylindrical noise suppression chamber is axially mounted around the inner chamber and flow diffusing elements. The diffusion elements increase the fluid flow noise frequency range and sound deadening material installed in the outer chamber absorbs noise in this higher frequency range so that the venting fluid noise level outside the apparatus is no more than about 95 dB.Type: GrantFiled: August 27, 1987Date of Patent: August 9, 1988Assignee: Union Oil Company of CaliforniaInventors: David M. Ruiz, Alvin S. Timmons
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Patent number: 4756886Abstract: A gas-solids separator to remove particulate solids from a mixed phase stream of solids and gas which has a frusto-conical chamber having substantially conical walls tapering downwardly and outwardly and means defining at least one opening in said conical walls for conveying through the conical walls substantially solids free gas separated from the mixed stream of solids and gas.Type: GrantFiled: April 10, 1986Date of Patent: July 12, 1988Assignee: Stone & Webster Engineering CorporationInventors: Robert W. Pfeiffer, Lisbeth T. Pfeiffer
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Patent number: 4750923Abstract: A canister for adsorbing fuel vapor overflowing a fuel tank of an internal combustion engine and purging adsorbed vapor under a negative pressure of the suction system of the internal combustion engine so as to supply this adsorbed vapor for the combustion, the canister having a deflector for spirally diffusing introduced fuel vapor throughout the adsorbent layers of the canister, and another deflector having apertures for diffusing introduced purging air throughout the adsorbent layers.Type: GrantFiled: November 7, 1986Date of Patent: June 14, 1988Assignee: Aisan Kogyo Kabushiki KaishaInventors: Kazumi Haruta, Takashi Kato
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Patent number: 4749387Abstract: A separator for solid particles entrained in a gas flow formed of a cold air current discharging from an expansion turbine, the separator having a collection vessel disposed in and perpendicular to the air current and including a dome-type cover disposable above and connectible to the collection vessel, a feed line having a downwardly widening funnel-type end extending into the cover, and an outlet pipe tangentially connected to the cover in an upper region thereof, the funnel-type end of the feed line having an edge disposed at a location lower than that of the outlet pipe.Type: GrantFiled: December 2, 1986Date of Patent: June 7, 1988Assignee: Bosch-Siemens Hausgerate GmbHInventor: Helmut Lotz
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Patent number: 4737175Abstract: A filtration system for extracting solids from a gas includes a separator having an inlet section and an expansion chamber. A filter is located in an upper portion of the expansion chamber. Two hingedly interconnected plate sections extend from the inlet section to the expansion chamber to control the convergence of the passage for gas in the inlet section and the divergence of the passage for gas in the expansion chamber.Type: GrantFiled: June 10, 1987Date of Patent: April 12, 1988Assignee: Airmat Systems LimitedInventor: Thomas Rice
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Patent number: 4722747Abstract: An air filtration and purifying system for the air interiorly of a vehicle and is in the form of an add-on device for existing vehicles for removing particulate material and odors. The add-on system may be used in existing vehicles with or without an air conditioning system or heating system and effectively removes airborne particulates such as dust, dirt, pollen and the like and also removes odors such as tobacco, smoke, food, body odors and toxic gases and fumes and the like.Type: GrantFiled: June 16, 1986Date of Patent: February 2, 1988Inventor: Joseph M. Armbruster
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Patent number: 4722744Abstract: The invention relates to a condensate trap for compressed air plant. There is a sealing member arranged inside a trap housing. The sealing member also has the function of a float moving up and down with the level of condensate trapped in the housing. In its lowered position the sealing member shuts off a lateral discharge port and in a raised position it uncovers it. There are cam surfaces for guiding the sealing member and float so as to center it on the port.Type: GrantFiled: September 30, 1986Date of Patent: February 2, 1988Inventor: Kurt Stoll
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Patent number: 4692175Abstract: Two-stage precoalescer unit for filtering, coalescing and separating from contaminated compressed gas loose oil and water in a first stage and oil and water aerosol or vapor in a second stage, the coalescers of the first and second stages being mounted in tandem in a perforate-walled canister contained in a housing within an imperforate tube, the first-stage coalescer relatively permanently for periodic purging by gravity and a reverse flow of gas and the second-stage coalescer removably, for purging over an extended period by a reverse flow of purge gas and thereafter removal and replacement on detachment of a lower from an upper part of the housing, and a spring-pressed floating follower in the housing above and acting downwardly on the canister for compensating for manufacturing tolerances in components of the precoalescer unit.Type: GrantFiled: March 17, 1986Date of Patent: September 8, 1987Assignee: Roanoke CollegeInventor: Virgil L. Frantz
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Patent number: 4681608Abstract: Disclosed is a silencing filter for use in a power-driven machine arranged such that the air allowed to flow-in through an air intake port provided in a machine cover is caused to flow upwards by being caused to flow from lower ends of holes formed in extended portions of a filter element to upper ends thereof, thus being carried to a space area located above the filter element; and then the air is caused to flow downwards through the filter element and then, by being passed through the inside of machine frame portions, is guided up to an air inlet port of an internal combustion engine.Type: GrantFiled: April 7, 1986Date of Patent: July 21, 1987Assignee: Kioritz CorporationInventor: Akira Nagashima
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Patent number: 4673423Abstract: A particulate filter for exhaust gases is disclosed which includes two filter members of suitable porous, heat-resistant material, longitudinally spaced to provide a dead space between the two filter members. The filter members are disposed within a housing in spaced relationship to the outer wall of the housing to provide an annular passage between the filter members and the outer wall of the housing for flow of exhaust gases therethrough. Provision is made for delivering exhaust gases to the dead space and then causing the exhaust gases to flow from the dead space through two paths to the outlet of the particulate filter. One of these paths provides for flow directly through one of the filter members to the outlet. The other path provides for flow of exhaust gases through the other of the filter members to the annular space and then along the annular passage external of the filter members to the outlet.Type: GrantFiled: July 23, 1985Date of Patent: June 16, 1987Assignee: Mack Trucks, Inc.Inventor: Salih V. Yumlu
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Patent number: 4670223Abstract: Apparatus for producing sterile air suitable for being administered to intensive-care patients in hospitals using atmospheric air. The medical-grade air is free of gaseous contaminants and germs, at a cost substantially lower than when such air is prepared by mixing pure nitrogen with pure oxygen.Atmospheric air is compressed through at least one dry-piston compressor, condensing water vapor out of the compressed air through expansion into a buffer tank, filtering out dust particles down to micron size in a prefilter, drying the air through an adsorption desiccator unit and eliminating gaseous contaminants through an adsorption-desorption unit. A second dust filter is provided for trapping any dust released from the adsorption units. Biological contaminants, such as viruses and bacteria, are eliminated by flowing through a sequence of three biological filters of the coalescence type, and finally through a cold sterilizing unit.Type: GrantFiled: January 19, 1984Date of Patent: June 2, 1987Assignee: Le Masne S.A.Inventor: Henri L. Delachapelle
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Patent number: 4662910Abstract: A device for removing particulates from a gas stream includes a receptacle and a duct assembly located at least partially within the receptacle. The duct assembly has an inlet duct communicating with a first velocity-reduction zone which includes first and second ducts branched from the inlet duct. The assembly also includes a second velocity-reduction zone communicating with the first zone and with a chamber, the second velocity-reduction zone includes a branched third and fourth ducts branched from a duct of the first zone.Type: GrantFiled: February 18, 1986Date of Patent: May 5, 1987Inventor: Christian Lieb
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Patent number: 4658796Abstract: A system for preventing loss of fuel due to evaporation in internal combustion engine, particularly in automotive engine. The system has a casing accommodating a fuel gas absorbent. A separator chamber adapted to separate the liquid phase and gaseous phase of the fuel from each other is disposed in a passage through which a tank port leading from a fuel tank is communicated with the absorbent. The passage is so constructed as to permit only the gaseous phase of the fuel to be sent to the absorbent.Type: GrantFiled: September 23, 1985Date of Patent: April 21, 1987Assignees: Aisan Industry Co., Ltd., Toyota Jidosha Kabushiki KaishaInventors: Shigeru Yoshida, Kenji Koeda
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Patent number: 4639260Abstract: The present invention relates to an apparatus for filtering solid matter from a gas. It particularly relates to improvements in bag house type filters for use in cleaning gas streams. There is provided a gas filter apparatus consisting of, in combination, a chamber having a top, base, and side walls, a conveyor tube for passing the solid laden gas into the chamber and centrally of a partition wall dividing the chamber into upper and lower compartments, gas and solid matter exit ports on the conveyor tube, in the lower compartment only, for use in distributing the gas and solid matter from the conveyor tube and directing at least a portion of the solid matter toward the base by gravity. The partition includes a number of openings communicating the upper and lower compartments, and filter tubes are provided in the lower compartment covering the openings.Type: GrantFiled: November 18, 1985Date of Patent: January 27, 1987Inventor: Henry Borow
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Patent number: 4618352Abstract: A dust collector including a plurality of filter units and an arrangement for periodically providing reverse flow through a single filter unit to remove dust therefrom while maintaining normal flow of air through the remaining units. The filter units are connected to a plurality of ducts, and a centrifugal fan is provided for effecting reverse flow of air through the ducts sequentially to remove collected dust from the filter units. A transverse duct extends transversely of and contiguous to the first-mentioned ducts. A plurality of openings are provided for selective communication between the transverse duct and the first-mentioned ducts.Type: GrantFiled: October 22, 1982Date of Patent: October 21, 1986Inventor: Robert T. Nelson
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Patent number: 4561868Abstract: A canister filter assembly (10) for use in a vacuum line for trapping particulates and liquids from fluid drawn through the vacuum line including a cupped shaped container portion (12) and a lid portion (14) disposed over the container (12) in sealing engagement therewith. The lid (14) includes a fluid inlet (28) and a fluid outlet (30). A filter assembly (16) including a hydrophobic filter (32) and a prefilter (34) filters the particles and aerosols from the fluids passing through the fluid outlet (30). A filter support (18) supports the filters (32, 34, 36) within the filter assembly (16) and includes a cap member (40) spaced below the prefilter (34). The cap member (40) includes an upwardly extending peripheral rim (42) perfecting a seal with the remainder of the filter support (18).Type: GrantFiled: July 2, 1984Date of Patent: December 31, 1985Inventors: Charles von Reis, Karlis Vizulis
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Patent number: 4554701Abstract: A motorized vehicular vacuum street sweeper (2) includes a hopper (14), a vacuum system (12) for suctioning debris and depositing same in the hopper (14), and a multi-stage filtration system (16) including a coarse filter above the hopper (14) and two different material filters (54 and 56) in an exhaust section (30) of the vacuum system (12) downstream and external of the hopper (14) to filter dust and the like and afford a cleaner exhaust to the atmosphere.Type: GrantFiled: February 10, 1984Date of Patent: November 26, 1985Inventor: Karel W. M. Van Raaij
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Patent number: 4531955Abstract: A separator for a flooded liquid/gas compressor comprising a pressure vessel having an inlet for compressed liquid/gas mixture, a lower outlet for liquid and an upper outlet for clean gas, a filter element interposed between the liquid/gas mixture inlet and the clean gas outlet through which the gas flows to said outlet, and a shield member at least partially surrounding the filter element whereby liquid from the separator pressure vessel is prevented from contacting the filter element during periods of operation when the liquid volume in the pressure vessel may rapidly expand.Type: GrantFiled: February 28, 1984Date of Patent: July 30, 1985Assignee: Cash Engineering Co. Pty. Ltd.Inventors: John Cash, John A. Kitchener
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Patent number: 4529423Abstract: A phase separator or vapor trap is provided for use with a plastic extruder. The phase separator includes housing means which define a first chamber for separating hydrocarbon compounds from exhaust vapor, an internal conduit located within the first chamber, and a couple which joins extruder discharge conduit with the inlet of the internal conduit. The inlet means provides a larger cross-sectional area than the extruder vapor exhaust conduit. The first chamber includes a baffle which surrounds the internal conduit and further defines at least one flow opening. The aggregate cross-sectional area of the flow openings are substantially the same as the cross-sectional area of the discharge conduit. Diffusion means adjustably attached to the end of the internal conduit causes radial diffusion of the exhaust vapor within the first chamber.Type: GrantFiled: August 20, 1984Date of Patent: July 16, 1985Inventor: Ronald L. Johnson
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Patent number: 4504291Abstract: A dropout boot is provided for removing solid particles from a hot gas stream comprising an enclosed metal boot shell having an upper vertical inlet means adapted to receive hot gas from refractory lined gas conduit and having a lower horizontal outlet means for passing hot clean gas to an energy recovery system or the like; said boot shell having an upper flared portion adjacent the inlet means with outward and downwardly flared configuration whereby gas velocity is substantially reduced in the boot shell; a shell floor having open bottom horizontal baffle means for retaining solid particles from the gas; said outlet means having an inwardly extending portion with an upper horizontal overhang protruding into the boot shell below the flared portion and inlet means; and an outlet grating mounted over the horizontal outlet transversely of gas flow below the outlet overhang portion and sloped outwardly and downwardly therefrom.Type: GrantFiled: June 29, 1983Date of Patent: March 12, 1985Assignee: Mobil Oil CorporationInventors: James H. Haddad, Klaus W. Schatz
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Patent number: 4502871Abstract: Disclosed is a wax condenser for separating wax from an entrainer gas (or sweep gas) which is introduced into a sintering furnace and then pumped out in order to remove the wax from the furnace. The condenser includes a hot chamber and a cold chamber. Wax is removed by the condenser in three ways. After the entrainer gas enters the hot chamber of the condenser from the sintering furnace, it will pass through a heated filter. The heated filter will capture a large percentage of the wax present in the entrainer gas. The entrainer gas passes from the heated filter through a flow-restricting aperture which is located in a barrier separating the hot chamber from the cold chamber. This flow restricting aperture causes a pressure drop across the barrier. When the entrainer gas passes through the aperture, an expansion of the entrainer gas takes place due to the drop in pressure associated with the passing of the entrainer gas through the flow restricting aperture.Type: GrantFiled: February 1, 1983Date of Patent: March 5, 1985Assignee: GCA CorporationInventors: Ingar F. Andersen, Timothy W. Lutts, Eddie W. Lam
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Patent number: 4490162Abstract: An improved low pressure filtration apparatus for the collection and removal of particulate matter form an air stream which includes particulate matter wherein the apparatus includes sequentially, an intake hose for the introduction of the air stream including said particulate matter into the apparatus, a first enclosed collection chamber having an intake apparatus for connection to said intake hose and a removably secured outlet apparatus for removal of a portion of said particulate matter collected in said first collection chamber and an exit apparatus from the first collection chamber for the air stream and a portion of the particulate matter, a second enclosed collection chamber having an intake apparatus for introducing the air stream and a portion of the particulate matter from the first collection chamber, an exit apparatus for the air stream and a portion of the particulate matter from the second enclosed collection chamber, a plurality of vertically disposed filter bags disposed between the intake anType: GrantFiled: December 20, 1982Date of Patent: December 25, 1984Assignee: Aaxon Industrial, Inc.Inventor: Charles Davis
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Patent number: 4481019Abstract: In an extraction method and apparatus for extracting low biomass solid materials from a pneumatic transport line, the stream of gas having the solids entrained therein is caused to flow over a toothed extractor wheel. The toothed wheel picks out of the stream the solid materials which are then doffed from the tooth extractor wheel by the vanes of a rotating valve which seals the pressure of the pneumatic transport line from the ambient. The material doffed from the extractor wheel falls into the region between the vanes of the rotary valve and is then removed from the system as the vanes of the valve rotate. The air stream which is inducted into the extractor is first caused to pass through a diffuser which slows the velocity of the air stream and then the air stream is cause to flow along a curved duct section toward the extractor wheel causing the solid materials to flow to the outside of the curved duct section and into the extractor wheel to facilitate extraction.Type: GrantFiled: May 26, 1981Date of Patent: November 6, 1984Inventor: Frederick E. Moreno
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Patent number: 4475933Abstract: Particle-laden gas passes downwardly through an inlet duct into inlets of several wedge-shaped deceleration chambers formed by vertical plates radiating from a central region below the bottom of the inlet duct. The inner ends of the plates and the inlet of the chambers are vertically below the bottom of the inlet duct. In each chamber the gas first proceeds towards a particle exit at the bottom of the chamber, then reverses direction and passes upwardly into filter units above wider parts of the chamber, depositing some heavy particles near the particle exit. To purge the chambers and filter units, a suction device is connected to an outlet duct and one or more inlets to the chambers are closed off from the inlet duct simultaneously with the particle exit(s) of the same chamber(s) being connected to the outlet duct.Type: GrantFiled: August 18, 1982Date of Patent: October 9, 1984Assignee: Air Pollution (Equipment) LimitedInventor: Peter R. Piggin
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Patent number: 4472182Abstract: In an apparatus for separating suspended particles, such as ash, from stack gas, consisting of a coarse separator, a take-up container for particles removed from suspension in the coarse separator, a fines separator for the partially-cleaned gas output of the coarse separator, and a stack for the cleaned gas output of the fines separator, a new arrangement is disclosed for maintaining the temperature of the dirty stack gas within the apparatus above its dew point so as to prevent the deposition of soot (sooting-up), such arrangement being the construction of the apparatus in such a way that the coarse separator, the fines separator and the outlet stack form an integral structural unit which sits upon the take-up container, which is supported by feet set upon a foundation. In such arrangement, the heat of the hot, suspended ashes deposited in the take-up container is transferred to the take-up container, and thence, to the elements of the integral structural unit.Type: GrantFiled: February 9, 1982Date of Patent: September 18, 1984Assignee: AZO-Maschinenfabrik Adolf Zimmermann GmbHInventors: Adolf Zimmermann, Otmar Link
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Patent number: 4466816Abstract: This apparatus comprises a housing having a chamber lined with heat-resistant material in which exhaust gases, from an internal combustion engine, are reburned. The apparatus also contains refractory screens to more efficiently break up the gases, before they enter a sump portion into which solid impurities fall from the said gas. Further filtering of the gases occurs as they pass through screens and a filter means before the said gases are released from the housing into the atmosphere.Type: GrantFiled: November 4, 1982Date of Patent: August 21, 1984Inventor: George A. Felker
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Patent number: 4463474Abstract: A vacuum cleaner is provided which includes an easily removable recovery tank mounted on a support structure and having a cover on the tank forming a vacuum chamber in the tank, the cover being hinged to the support structure by a hollow hinge. A vacuum fan is mounted on the support structure and draws air from the vacuum chamber through the cover and through the hollow hinge.Type: GrantFiled: June 7, 1982Date of Patent: August 7, 1984Inventor: Paul G. Jacobs
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Patent number: 4462722Abstract: Apparatus for removing trim from a conveying fluid medium including a conduit defining a generally rectangular shaped exit opening. A fluid flow attachment plate leads from the opening for redirecting movement of the fluid medium. A screen for interrupting movement of the trim and separating it from the fluid medium is attached to the fluid flow attachment plate.Type: GrantFiled: November 24, 1982Date of Patent: July 31, 1984Assignee: Crown Zellerbach CorporationInventor: Imants Reba
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Patent number: 4455814Abstract: A seed harvester is provided for harvesting seeds from a standing crop without cutting the crop. The harvester is particularly designed for harvesting grass seed. The harvester includes a header assembly for stripping from the crop, and a seed separator for drawing the seeds from the header assembly in an air stream and for separating the seeds from the air stream. The header assembly includes a frame assembly having a transverse inlet which communicates with the seed separator. An endless revolving stripping surface is mounted across this transverse opening to contact the seed heads of the crop and strip the mature seeds from the crop. A rotating reel is mounted to rotate parallel to, and above and forwardly of, the seed stripping surface. On rotation, the reel guides the crop into contact with the seed stripping surface and holds it there for a time to permit the seed stripping surface to remove mature seeds from the crop. The seed separator includes a duct, curved between its ends.Type: GrantFiled: January 18, 1982Date of Patent: June 26, 1984Assignee: Her Majesty The Queen in right of Alberta as Represented by The Minister of AgricultureInventor: John C. Kienholz
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Patent number: 4443235Abstract: A compact, self-cleaning, cabinet, dust collector is provided. The collector housing is a single-piece, molded unit having recessed areas and a molded air inlet. Entering dust-laden air is directed into two flows in a passageway surrounding a suspended, flexible, pleated filter element. An inner wall of the passageway contains a precleaner upstream from the filter element. A collector ramp, at the bottom of the passageway, directs pre-cleaned matter to a removable hopper. A fan, supported above the open upper end of the filter element draws air through the collector. A fan motor is isolated from the housing interior in one of the recessed areas of the housing. To gain access to the filter element the fan is rotated upwardly and away from the filter element. To prevent the pleats of the element from collapsing, hot-melt spacers are provided on the pleat surfaces. The element is flex-cleaned by a rotatable mechanism located beneath and adjacent the bottom closed end of the element.Type: GrantFiled: October 1, 1982Date of Patent: April 17, 1984Assignee: Donaldson Company, Inc.Inventors: David L. Brenholt, Daniel T. Risch
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Patent number: 4434564Abstract: A heat recovery device is adapted for placement in the heat exhaust vent pipe of a conventional clothes dryer. The device includes a scrubber for primary removal of lint from the dryer exhaust and a final filter means for removing small particles of lint remaining prior to allowing the warm, humid dryer exhaust air to pass into the atmosphere of the interior environment of a home. The scrubber includes a series of ducts opening into an enlarged plenum and a baffle plate in the plenum to inhibit streamlined flow of air allowing the lint to settle to the bottom of the plenum, and the final filter includes a series of expanded aluminum screens or mesh for positively prohibiting passage of lint into the atmosphere. A clean-out tray is provided at the bottom of the plenum to facilitate removal of lint from the plenum for disposal.Type: GrantFiled: February 15, 1977Date of Patent: March 6, 1984Inventor: John C. Braggins, Jr.
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Patent number: 4433987Abstract: Apparatus for filtering air laden with dust or other particulate matter including: a filtering area, an air velocity dissipation zone above the filtering area, a lower tube sheet mounted above the dissipation zone and forming a partial boundary therewith, an air plenum mounted above the lower tube sheet, the air plenum including an air inlet for receiving dust laden air, an upper tube sheet forming an upper boundary of the air plenum, the lower tube sheet including a plurality of holes, the upper tube sheet including a plurality of holes vertically aligned with the holes in the lower tube sheet, a plurality of clean air outlet tubes having upper end, main body and lower end portions, the upper end portions being mounted within the holes in the upper tube sheet, the main body portions extending through the holes in the lower tube sheet, the lower end portions extending beneath the lower tube sheet and ending in a horizontal plane at the interface between the dissipation zone and the filtering area, a pluralityType: GrantFiled: November 20, 1981Date of Patent: February 28, 1984Inventor: Arthur Lenox
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Patent number: 4396407Abstract: The invention provides an air cleaner assembly in combination with an engine having a blower housing with airflow circulating therethrough and a carburetor having an intake. The assembly comprises a duct having an inlet and an outlet with the inlet angularly disposed through the blower housing, an air cleaner housing having side walls and a bottom wall, and an outlet chamber having an inlet and an outlet in communication with the carburetor inlet. Within the air cleaner housing, a first interior wall is upstanding from the bottom wall and defines with certain side walls an intake chamber having an inlet communicating with the duct outlet, and a second interior wall upstanding from the bottom wall so that a filter chamber is formed between the interior walls having an outlet in its bottom wall so that the filter chamber and outlet chamber communicate through the filter chamber outlet and the outlet chamber inlet.Type: GrantFiled: March 11, 1982Date of Patent: August 2, 1983Assignee: Tecumseh Products CompanyInventor: Paul T. Reese
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Patent number: 4395269Abstract: An air filter assembly (10) is disclosed which includes a dirty air chamber (22) having an air inlet (20) and a plurality of clean air outlets (34). In fluid communication with each air outlet (34) in the dirty air chamber (22) is a pleated media filter element (32) positioned so as to be suspended in a cantilever manner at an acute angle with respect to a horizontal plane. A distribution space (33) for reducing entering air velocities is created by the inclined uppermost filter elements (32) and the horizontal plane of the top surface panel (16). The lowermost portion (25) of the dirty air chamber (22) provides a collection area for particulate matter removed from the filter elements. The lowermost portion (25) includes a sloping surface (24) constructed of a material which flexes in response to pressure increases within the chamber (22).Type: GrantFiled: September 30, 1981Date of Patent: July 26, 1983Assignee: Donaldson Company, Inc.Inventor: Frederick E. Schuler
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Patent number: 4394143Abstract: A protective spark eliminating system for removing burning particulates from flue gases prior to introducing the gases into a filter baghouse. The protective system includes a housing enclosing a separating chamber having a gas inlet in the side of the housing for directing a stream of flue gases into the housing, and a gas outlet in the top of the housing for conducting the flue gas stream out of the chamber. To effect separation and removal of the burning particulates from the gas stream, the housing is provided with a secondary gas system which is adapted to maintain a downwardly flowing curtain of gas across the width of the flue gas inlet to direct the burning particulates in the flue gases downwardly into a hopper at the base of the housing as the flue gases enter the chamber.Type: GrantFiled: July 2, 1982Date of Patent: July 19, 1983Assignee: Allis-Chalmers CorporationInventor: Leonard J. O'Dell
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Patent number: 4372762Abstract: A modular dust collection and filtration apparatus including a housing forming a primary inertial and gravitational separation chamber and including first and second dust collection hoppers. A vertically extending duct is disposed in the housing and extends through a partition separating one of the hoppers from the primary separation chamber. A porous media filter element is disposed in the duct at the upper end thereof. A removable tower section of the housing is disposed around the duct to form flow passages leading to swirl vanes which introduce the flow stream into the duct. A reverse jet cleaning system includes repeat cycle timer controls for periodic reverse jet cleaning of the filter elements at different times to reduce impedance to air flow through the apparatus.Type: GrantFiled: February 9, 1981Date of Patent: February 8, 1983Inventor: Claude S. Cooley
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Patent number: 4369049Abstract: A system for preventing freezing of liquids during separation of liquids from natural gas at a natural gas well head comprising an elongated tank mounted in a vertical attitude with a lowermost portion buried in the ground below the frost line and an uppermost portion extending above the ground. A divider plate separates the tank into an upper compartment and a lower compartment. Each compartment has a liquid reservoir at the bottom thereof. An underground natural gas supply line is connected to a mid-portion of the lower compartment whereby material gas including liquids such as water and hydrocarbons flows into the lower compartment.Type: GrantFiled: January 11, 1982Date of Patent: January 18, 1983Inventor: Rodney T. Heath
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Patent number: 4361423Abstract: A combination acoustical muffler and exhaust converter for use with internal combustion engines, comprising an elongated hollow cylinder adapted to be connected to a source of exhaust gas, screen means positioned at a plurality of longitudinally spaced locations within said cylinder for partitioning the cylinder into a plurality of chambers arranged in series flow relation with each other and with respect to the flow of exhaust gas through said cylinder, the screens having a silencing action on said exhaust gas, magnet means in one of said chambers for exerting a magnetic pressure on the gas passing therethrough to serve to separate ferrous particles from the exhaust gas stream, a packing material of mineral material, such as mineral wool, in another of said chambers for condensing moisture in said exhaust gas and for removing hydrocarbon therefrom, and a material such as a ceramic material of an extremely fine porous nature, in still another of said chambers for removing carbon monoxide from said exhaust gasType: GrantFiled: November 3, 1980Date of Patent: November 30, 1982Assignee: NKNInventor: Albert E. Nitz
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Patent number: 4350499Abstract: Methods and apparatus for separating vapor from refined cellulosic material are disclosed. The method includes discharging the refined cellulosic material downwardly through an inlet opening into a discharge chamber maintained at substantially the same pressure as the refiner, deflecting the vapor laterally with respect to that cellulosic material, passing the vapor through the discharge chamber at a flow rate of less than 15 meters/sec. so that the cellulosic material carried by the vapor is separated from the vapor by sedimentation, and discharging the cellulosic material from the discharge chamber.Type: GrantFiled: February 20, 1981Date of Patent: September 21, 1982Assignee: Sunds Defibrator AktiebolagInventor: Rolf B. Lundgren
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Patent number: 4347068Abstract: An air admission device for an inlet manifold of an internal combustion engine in order to obtain improved fuel economy and reduced toxic exhaust emission comprises a closed container or capsule which provides an air expansion chamber and has a fine metering air inlet orifice for entry of atmosphere air into the chamber so as to be cooled therein prior to passage to and along an elongate air outlet tube communicating with the air chamber and adapted in use to be fitted in and through a hole provided therefor in an inlet manifold of an internal combustion engine whereby the container is exteriorly mounted on the manifold and the air outlet tube extends into the manifold in order to admit cool air from the chamber into the manifold for creating turbulence in the flow of a fuel/air mixture through the manifold into the engine.Type: GrantFiled: January 30, 1980Date of Patent: August 31, 1982Inventor: Walter R. Cooper
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Patent number: 4341086Abstract: A refrigeration system comprised of a compressor, a condenser, an expansion valve and an evaporator, wherein the expansion valve includes a means for separating a gaseous phase refrigerant generated within the valve from a liquid phase refrigerant so as to feed the liquid phase refrigerant to an inlet of the evaporator and the gaseous phase refrigerant to an outlet of the evaporator.Type: GrantFiled: October 6, 1980Date of Patent: July 27, 1982Assignee: Clarion Co., Ltd.Inventor: Heiichiro Ishii
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Patent number: 4328014Abstract: A sweeper hopper with a filter assembly is provided. The filter assembly separates the hopper into a dirt and debris-receiving chamber and an exhaust chamber. Air-borne dirt carried through the dirt and debris chamber is trapped by the filter assembly and the air enters the exhaust chamber from which it is exhausted through a blower. A holding frame holds the filter in place against a supporting frame or flanges. The frame has a shaker motor which is periodically operated to clean the filter by vibration. When the filter is to be replaced, the holding frame is readily separable therefrom for rapid replacement, yet the holding frame securely holds the filter in place when the sweeper is in operation.Type: GrantFiled: April 22, 1981Date of Patent: May 4, 1982Assignee: The Scott & Fetzer CompanyInventors: Jack L. Burgoon, Christopher M. Knowlton
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Patent number: 4305738Abstract: Micronized coal is removed from coal-bearing steam by spraying stabilized petroleum oil into the steam and directing the resultant stream at a separation surface on which a coal-oil slurry is deposited and collected. Apparatus includes conduits which direct the resultant stream downward into a housing and normal to a surface on which the slurry is deposited by impact forces. In additional apparatus disclosed, the resultant stream is directed from a horizontal conduit circumferentially along the interior wall of a horizontally disposed cylindrical chamber at the top of the chamber and the coal-oil slurry deposited on the wall by centrifugal force is collected in a trough situated below a longitudinal slot at the bottom of the chamber. In both types of apparatus, after separation of the slurry the velocity of the steam is reduced to settle out remaining oil droplets and is then discharged to the atmosphere.Type: GrantFiled: January 30, 1980Date of Patent: December 15, 1981Assignee: Dravo CorporationInventor: Joseph Vlnaty
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Patent number: 4305548Abstract: An energy loss detection system includes an apparatus for measuring loss of the vapor phase of a bi-phase fluid. Such apparatus is interposable in an energy transfer circuit downstream of an energy consumer device, intended to take energy from the bi-phase fluid by converting the vapor phase to liquid, and upstream of a potential energy loss device. The apparatus includes a separator for separating the vapor and liquid phases of the bi-phase fluid into separate flow paths. A probe senses the flow rate of the vapor phase through the separator and produces a signal related thereto. An output apparatus includes a read-out device responsive to the probe signal for producing a display indicative of vapor flow rate and hence of energy loss downstream of the separator.Type: GrantFiled: January 21, 1980Date of Patent: December 15, 1981Assignee: Armstrong Machine WorksInventors: David W. Miner, Mark D. Driscoll, John E. Sorenson, Robert T. Kirchner, David A. Keech