Hand Manipulable Patents (Class 210/238)
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Patent number: 5580449Abstract: Sewage treatment apparatus comprising a tank, aeration means which serve to aerate a biomass contained within the tank when the apparatus is in use, and air compressor means which are connected to the aeration means to deliver air thereto, in which the air compressor means are in a housing that forms a barrier between the housing interior and the tank interior, to inhibit transfer of gas or other material from the tank interior to the housing interior.Type: GrantFiled: August 3, 1994Date of Patent: December 3, 1996Inventor: Jeremy Wickins
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Patent number: 5569377Abstract: Spray paint equipment combining a paint gun and stand. The stand serves to adjustably support a primary paint supply; filters for filtering paint; a gravity feed tank for the spray gun and the spray gun when it is not in use. To this end the stand is formed with a horizontal base dimensioned to support the paint supply. An upstanding vertical post extending from the base has adjustably mounted thereon an initial filter holder supporting a filter to filter paint as it is delivered into the paint supply. Also adjustably arranged on the vertical support post is another filter supporting holder and final filter mounted above an adjustable gravity tank support and gravity feed paint tank for the spray gun permitting selective positioning of the componets necessary to effect spray painting.Type: GrantFiled: October 21, 1994Date of Patent: October 29, 1996Assignees: Milton Hasimoto, Susumu Emoto, Masuichi Matsuura, Michael J. Tamanaha, Christopher P. McKenzieInventor: Milton Hashimoto
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Patent number: 5549828Abstract: A method and an apparatus for in situ purification by aeration and biofiltration of water from a water body. According to this method, polluted and/or oxygen deficient water is drawn through a conduit into a submerged chamber held adjacent to the surface of the water body. Water is oxygenated from three sources: air injected into the conduit to draw the water into the submerged chamber, air diffusing from the surface of the water body; and air injected in a lower portion of the chamber. The oxygenated water flows downwardly from the chamber through a submerged biofilter having a filter bed made of filtering media which may be preinoculated with beneficial microorganisms and essential nutrients. Rafted or floating vascular plants can be inserted into the chamber to enhance purification by fixing metals.Type: GrantFiled: March 23, 1994Date of Patent: August 27, 1996Inventor: Karl F. Ehrlich
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Patent number: 5549822Abstract: The water purification filter is coupled intermediate any conventional shower head feed pipe and shower head. The filtration device is toroidal with a serpentine flow path. The filtration device envelopes the feed pipe which enables the shower head to remain within substantially the same location as before the insertion of the filter. To purify the shower water, the filter contains a filter media coupled between two filter screens.Type: GrantFiled: January 13, 1995Date of Patent: August 27, 1996Inventor: George E. Ferguson
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Patent number: 5534145Abstract: A portable, manually-operated water filtration pump for purifying water. The pump includes an inexpensive, disposable filter cartridge which can be easily changed when the filter elements are no longer effective. The pump uses a lever to actuate a double-acting piston. The lever is collapsible to one side of the pump for compact storage. The filter cartridge is a tubular cylinder having an inner bore forming the pump cylinder. A cylindrical mechanical filter is concentric with and adjacent to the inner bore to filter out particulates larger than 0.3 microns. A fluidized granual activated carbon filter surrounds the mechanical filter to absorb halogen and halogen-related compounds such as herbicides and pesticides. The pump pumps filtered water into a bottle adaptor which will fit most standard water containers. A prefilter is provided to screen out large particulates from the pump to enhance the life of the filter elements.Type: GrantFiled: August 15, 1994Date of Patent: July 9, 1996Assignee: SweetWater, Inc.Inventors: Sanford Platter, Jeffrey K. Aldred, Richard J. Kraemer
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Patent number: 5503742Abstract: A shower filter assembly having an in-line reversible filter, changeable by unscrewing two portions of the housing. The housing exterior includes a plurality of gripping means to allow easy opening and closing of the housing and to prevent slippage of the hands of a user gripping the two portions, even when wet. The shower filter assembly includes a separate internal filter element that may be easily inserted into or removed from the shower filter assembly to allow the internal filter element to be easily reversed for longer use.Type: GrantFiled: October 14, 1994Date of Patent: April 2, 1996Inventor: David K. Farley
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Patent number: 5487833Abstract: A water filter including an inlet assembly which comprises a prefiltering foam tip. The inlet hose includes an adjustable float and a weight on the end of the hose which allows a given length at the end of the inlet hose to extend below the surface of the water being filtered. The water filter further includes a check valve assembly to relieve pressure buildup inside the pump. A unique lever-action handle, in combination with a rocking piston, allows efficient filtering with few moving parts. The filter components are easily replaceable. The main filter assembly is suspended resiliently at its periphery to provide shock-absorbing characteristics. The filter also includes an adaptor base which allows for a direct connect between the vessel into which water is filter. The water filter also provides a unique method of storing the inlet hose to render the water filter easy to carry and prevent foreign objects and debris from entering into the area of working parts.Type: GrantFiled: July 15, 1994Date of Patent: January 30, 1996Assignee: Mountain Safety Research (MSR)Inventors: James F. Fife, Daniel J. Vorhis, Kenneth D. Laughlen, Nancy L. Dienes
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Patent number: 5486287Abstract: A strainer device for preventing particulate matter from entering a drain system is provided. The device includes a strainer frame including a box portion and a flange portion. The box portion includes a primary outlet for liquids which is covered by a filtering device. Additionally, the box portion includes at least one secondary outlet along a side wall of the box portion, which is also covered by a filtering device. The present strainer device is designed such that when the primary outlet becomes clogged, liquid can flow through at least one of the secondary outlets. The flanged portion of the device is designed to overlap and extend beyond the sink or receptacle in which the strainer device is placed. The annular flange defines the inlet of the strainer device and includes a tapered portion and a grate recess in which a grate can be placed.Type: GrantFiled: September 26, 1994Date of Patent: January 23, 1996Assignee: Murphy Marketing, Inc.Inventors: Gary Murphy, Raymond Matthias
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Patent number: 5482624Abstract: Filter cartridge assemblies (10) comprising at least one filter cell (12) having an aperture (18) therethrough; a retainer ring (22) securably disposed on the filter cell and concentric with the aperture; and a lifting device (42, 50, 70, 80, 90) in communication with the retainer ring. A device for lifting and carrying a filter cell (12) comprising a retainer ring (22); and a lifting device (42, 50, 80, 90) in communication with the retainer ring. A method for the assembly of a cell-type filter cartridge device (10) comprising the steps of providing a filter housing (28) for at least one filter cell (12), the filter housing having a removable opening, an inlet and an outlet; providing at least one filter cell, the cell having an aperture (18) communicable with the outlet and a retainer ring (22) secured to the cell and providing a lifting device (42, 50, 80, 90); depositing the filter cell into the filter housing; and fastening the removable opening to the filter housing.Type: GrantFiled: October 4, 1994Date of Patent: January 9, 1996Assignee: Cuno IncorporatedInventors: Frank Swiatek, Richard Leavitt, Donald Chanski, Ronald V. Repetti, Drew Willoughby
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Patent number: 5473786Abstract: A tool for cleaning debris from swimming pools includes a frame, a corresponding net, and retaining means for retaining the net on the frame. The preferred retaining means is an elongated strip of resilient, flexible material, having a generally U-shaped cross-section. The web portion of the cross-section includes an exterior surface smoothly shaped between its two edges to urge debris from the pool into the net. The leg portions of the cross-section include gripping portions to assist in engaging and/or disengaging the retaining means from the frame, to permit the net to be assembled, changed or replaced. The preferred frame of the tool is fabricated from metal and includes an elongated, curved frame portion with its ends welded to a tubular attachment member, to permit attachment of the tool to a handle, pole or similar structure. A corresponding preferred method of use is also disclosed.Type: GrantFiled: August 25, 1994Date of Patent: December 12, 1995Inventor: Eric Resh
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Patent number: 5469935Abstract: A device for preventing leakage and spillage of fluids from a canister type oil filter during removal thereof from an engine block is in the form of an annular elastomeric sleeve having an upper end and a lower end. The upper end has an opening adapted to fit over the exterior of an oil filter. The bottom end of the sleeve has an opening of lesser diameter than that of the upper end and the body of the sleeve adjacent the lower end has smooth contours and is of increased thickness relative to the body of the sleeve. A plurality of protrusions extend inwardly from the inner surface of the shape positioned circumferentially around the shape and are located between the upper and lower ends thereof.Type: GrantFiled: September 1, 1994Date of Patent: November 28, 1995Inventor: Monte P. Hewuse
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Patent number: 5462659Abstract: An improved axial flow chromatography column for separations dependent upon bed depth, such as size exclusion and where changes of column volume necessitate bed height adjustments. The improvements include a snap-action lever or a collet arrangement which permits quick and easy movement of the bed adjuster; a flush seal assembly at the outlet frit and a V-shaped seal in the bed adjuster which obviates dead volume gap of conventional O-ring seals; lens-shaped frits convex on the inlet and outlet sides provide for uniform flow through the column, and the access ports eliminate the contamination problem by providing easy access for cleaning and aspiration of liquid; and a combined inlet tube and adjuster tube assembly eliminates the need for threaded components which make sanitation difficult.Type: GrantFiled: June 15, 1993Date of Patent: October 31, 1995Assignee: Sepragen CorporationInventors: Vinit Saxena, Paul Young
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Patent number: 5458772Abstract: A filter holder assembly for use with an oil filtering pan in a food fryer filtration system to filter a contaminated cooking oil is provided with an adjustable sealing ring so as to accommodate filters of different thicknesses such as filter pads and filter paper. In one self-adjusting embodiment, the sealing ring is configured for vertical movement by way of a pair of pins operatively connected to the sealing ring and that are movable vertically within a corresponding pair of slotted hinge members. When a filter pad is used with this embodiment, the pins are urged against the hinge members such that pressure is applied to the sealing ring to form a positive seal. Alternative embodiments create a positive seal when either a filter pad or filter paper is used.Type: GrantFiled: January 13, 1994Date of Patent: October 17, 1995Assignee: Filtercorp Partners L.P.Inventors: Don H. Eskes, Richard A. Bernard, Sidney A. Burklund
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Patent number: 5453187Abstract: An improved food, oil and grease accumulating apparatus and method of use is disclosed. The improved apparatus includes a pump station to discharge contaminated effluent at a higher flow rate at periodic intervals into a first food separation station for removing food particles. Effluent leaves the food separation station into a second food separation system and then an oil and grease separation station which uses an oleophillic material to attract and coalesce oil and grease particles and permit their advancement along channels to the top region of the oil and grease separation station. The oil and grease are removed through an evacuation system while the water is permitted to discharge from the oil and grease separation station into the sewer system.Type: GrantFiled: February 15, 1994Date of Patent: September 26, 1995Inventor: Arnold D. Plumb
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Patent number: 5453189Abstract: A filter insert for containers, such as tea pots, where a specific dwelling time is required for the filter pulp in the liquid held in the container, the insert consisting of a circular cylindrical filter unit, extending downwards from the top of the container at to least below the surface of the liquid in the container when being filled, and where at least one plunger shaft with a plunger sliding in a plunger guide extends axially through the upper part of the insert.Type: GrantFiled: July 30, 1993Date of Patent: September 26, 1995Inventor: Carsten Joergensen
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Patent number: 5443626Abstract: A fluid-collecting device for collecting fluid from a fuel tank having an opening leading to the inside thereof including an elongated bag which is of a size which can pass through the opening, desiccant material in the bag, an elongated cord sewn to the top of the bag, and a disc to which the outer end of the cord is attached, the disc being of a larger size than the opening so that it cannot enter the opening, to thereby provide access to the outer end of the cord which can be grasped to withdraw the bag of desiccant material from the tank.Type: GrantFiled: September 28, 1994Date of Patent: August 22, 1995Assignee: Multiform Desiccants, Inc.Inventor: M. Reza Kiyani
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Patent number: 5435916Abstract: An improved filter assembly for filtering liquid, in particular milk. The improved assembly comprises a retainer for connecting the filter assembly to a liquid supply tube, a filter sock, having a predetermined diameter and length, for filtering the liquid, and an internal support coil, having coils of varying pitch, located within and supporting the filter sock, also having a predetermined diameter and length. The internal support coil extends substantially the entire length of the filter sock. The diameter of the filter sock is slightly greater than the diameter of the internal support coil so that the filter sock fits snugly over the internal support coil. The predetermined length of the filter sock is longer than the predetermined length of the internal support coil so that a flexible tab is provided at the open end of the filter sock.Type: GrantFiled: February 4, 1994Date of Patent: July 25, 1995Inventor: Harlan A. Schwartz
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Patent number: 5433848Abstract: A portable, manually-operated water filtration pump for purifying water. The pump includes an inexpensive, disposable filter cartridge which can be easily changed when the filter elements are no longer effective. The pump uses a lever to actuate a double-acting piston. The lever is collapsible to one side of the pump for compact storage. The filter cartridge is a tubular cylinder having an inner bore forming the pump cylinder. A cylindrical mechanical filter is concentric with and adjacent to the inner bore to filter out particulates larger than 0.3 microns. A fluidized granular activated charcoal filter surrounds the mechanical filter to absorb chlorine and chlorine-related compounds such as herbicides and pesticides. The pump pumps into a bottle adaptor which will fit most standard water containers. A prefilter is provided to screen out large particulates from the pump to enhance the life of the filter elements.Type: GrantFiled: April 9, 1991Date of Patent: July 18, 1995Assignee: KPA, Inc.Inventors: Sanford Platter, Jeffrey K. Aldred, Richard J. Kreamer
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Patent number: 5427679Abstract: A filtering arrangement is provided for effluent from a septic tank prior to passage to a drain field or other disposal. The filtering arrangement makes use of an open-top, U-shaped filter into which the septic effluent is conducted from the top, preferably through a T-fitting providing an open-topped channel leading into the U-shaped filter. The filter may be formed of an outer perforated casing and an inner lining of an open-cell-type polymeric material which effects the filtering of the effluent. The U-shaped filter is preferably suspended from the T-fitting. A preferred filter includes an inner and outer casing with a fibrous filter material between. The filter also preferably has an imperforate lower portion to retain a permanent body of liquid in the bottom of the filter. The arrangement provides fail-safe filtering automatically adjustable for varying flow rates and conditions of the filter. The polymeric filter medium is changed periodically to maintain efficiency.Type: GrantFiled: March 30, 1993Date of Patent: June 27, 1995Inventor: Byron C. Daniels
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Patent number: 5422001Abstract: An enlarged pool skimmer with a buoyancy component including a frame. The frame is formed of an upper horizontal tube in an inverted U-shaped configuration with downwardly extending ends and a lower angled tube in a U-shaped configuration with upwardly extending ends and with vertically extending brackets coupling the ends of the tubes at an outboard side and an inboard side. The brackets are formed with longitudinal slots extending vertically over the majority of the central extent of the brackets. A cylindrical pipe is positionable in a horizontal orientation with supports at the opposite ends thereof for adjustably coupling the ends of the pipe to the slots of the brackets. Also included are bolts and associated nuts which extend through the brackets at the ends of the pipe to allow for vertical adjustment of the pipe with respect to the frame. A fine mesh screen is formed of a plastic material covering the space between the upper tube, the lower tube and the side brackets.Type: GrantFiled: May 4, 1994Date of Patent: June 6, 1995Inventors: Gordon B. Yagoda, Robert T. Trzeciak
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Patent number: 5417851Abstract: A portable filtering apparatus with improved canister and filter cartridge design is described for remotely filtering by continuous recycling a variety of solvents and lubricating fluids from machinery reservoirs without requiring the halting of machinery operation or need for emptying said reservoirs to replace the solvents or fluids therein, said filter cartridge being replaceably removable from the canister for complete disposal along with its trapped contaminates preferably by incineration.Type: GrantFiled: May 2, 1994Date of Patent: May 23, 1995Inventor: Skipper K. Yee
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Patent number: 5395524Abstract: A filter for a refrigeration unit having a heat exchange fluid supply conduit. The filter is a substantially cylindrical filter screen having a radial flange disposed at each end. One or more filters are disposed along the entire length of the fluid supply conduit to maximize the surface area of the filter screen. Each radial flange has a gasket disposed thereon for providing a seal that prevents the fluid from circumventing the filter screen of the one or more filters. As fluid passes through the conduit, it flows radially through the filter along the entire length of the conduit thereby reducing the adverse effect on fluid pressure in the conduit and passes through the screen, into a volume defined exterior to the filter, thereby minimizing the pressure drop experienced along the fluid supply conduit.Type: GrantFiled: December 10, 1992Date of Patent: March 7, 1995Assignee: Multistack, Inc.Inventor: William R. Sugg
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Patent number: 5385666Abstract: A skimmer assembly for swimming pools includes an arrangement to facilitate the emptying of debris from the skimmer basket. A handle is pivotally mounted along the skimmer pole near the end opposite the basket and an operating member is pivotally mounted along the pole near the basket. A flexible line interconnects the handle, the operating member and the basket such that when the skimmer assembly is rotated 180.degree. about its axis and the handle pivoted to its emptying position, the operating member is raised to extend the basket to an inverted, open position, thereby allowing collected debris to fall freely from the basket into a receptacle. The skimmer assembly allows the user to empty the basket without having to touch the basket.Type: GrantFiled: October 12, 1993Date of Patent: January 31, 1995Inventor: Leon Perlsweig
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Patent number: 5378354Abstract: An apparatus for recovering liquid from liquid contaminated small articles of manufacture has a housing which defines upper and lower chambers separated by an inclined perforated plate. A vacuum producer withdraws air from the housing causing liquid contaminated articles discharged from a production machine to be drawn into the housing through a flexible suction hose. Liquid contaminated articles entrained within the incoming airstream enter the housing, strike a target plate, and drop onto the perforated plate. Liquid drains from the articles, passes through the perforated plate, accumulates in a sump in the lower portion of the housing and is pumped to a recovery station. An access opening in the housing facilitates removal of the articles from the housing.Type: GrantFiled: November 9, 1993Date of Patent: January 3, 1995Assignee: The Spencer Turbine CompanyInventor: James C. Poor
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Patent number: 5366642Abstract: A portable, manually-operated water filtration pump for purifying water. The pump includes an inexpensive, disposable filter cartridge which can be easily changed when the filter elements are no longer effective. The pump uses a lever to actuate a double-acting piston. The lever is collapsible to one side of the pump for compact storage. The filter cartridge is a tubular cylinder having an inner bore forming the pump cylinder. A cylindrical mechanical filter is concentric with and adjacent to the inner bore to filter out particulates larger than 0.3 microns. A fluidized granular activated charcoal filter surrounds the mechanical filter to absorb chlorine and chlorine-related compounds such as herbicides and pesticides. The pump pumps filtered water into a bottle adaptor which will fit most standard water containers. A prefilter is provided to screen out large particulates from the pump to enhance the life of the filter elements.Type: GrantFiled: December 15, 1992Date of Patent: November 22, 1994Assignee: KPA, IncorporatedInventors: Sanford Platter, Jeffrey K. Aldred, Richard J. Kraemer
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Patent number: 5361801Abstract: A ball valve has a housing which rotatably carries a ball. The housing has inlet and outlet ports. The ball has two ports which may be rotated to align with the housing's ports. The ball carries a cartridge in a cartridge compartment located transverse to the ball ports. The cartridge has inlet and outlet ports between which a cartridge flow passage is defined. A strainer is located within the cartridge flow passage. The ball and cartridge may be rotated to an orientation in which the ball ports are substantially transverse to the housing ports, from which orientation the cartridge may be extracted from the ball and housing and the strainer may be removed from the cartridge.Type: GrantFiled: May 7, 1993Date of Patent: November 8, 1994Assignee: Whittaker Controls, Inc.Inventors: Stephen J. Kerpan, Gary F. McKee
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Patent number: 5352358Abstract: A tool for remotely manipulating an auxiliary cuff provided on the end of a flexible vacuum hose of a portable pool cleaner residing on the floor of a swimming pool. The tool comprises an elongated handle having its lower end pivotally held on the auxiliary cuff so that it lies against the flexible vacuum hose when in a storage position. By rotating the elongated handle so that it extends forwardly of the auxiliary cuff, the operator can insert the end of the handle into the inlet of the skimmer so that it extends out of the top opening thereof. Then, by holding the upper end of the handle the operator can remotely direct and insert the auxiliary cuff down into the suction outlet of the skimmer. The operator can then remotely remove the auxiliary cuff from the suction outlet by reversing the procedure.Type: GrantFiled: July 9, 1993Date of Patent: October 4, 1994Inventor: Wayne C. Davey
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Patent number: 5350508Abstract: The device has an elongate net with an extended, open mouth. The net forms a channel-shaped volume in which floating debris from a swimming pool can be collected. A tubular frame member extends lengthwise across the mouth of the net, and floats are provided to support the net and the tubular frame member at the surface of the pool water, with the mouth of the net orientated to receive floating debris. In operation, the tubular frame member is connected to the return flow inlet of the swimming pool so as to receive a portion of the flow returning to the pool through the inlet. Sprays on the tubular frame member are directed into the net. There is also an outlet for directing another portion of the return flow of water into the swimming pool so as to create a swirling flow of water in the pool which encourages floating debris to migrate about the pool to the net.Type: GrantFiled: July 28, 1993Date of Patent: September 27, 1994Inventor: Lourens Van der Watt
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Patent number: 5342513Abstract: A strainer basket is integrally connected to a rectangular frame that is integrally connected to an elongated handle. At the end of the handle opposite from the frame, the handle broadens into a grip and then narrows and terminates in a small hook; the small hook is designed for removing the covers of skimmer wells in swimming pools. An elongated flange projects from the rectangular frame on the frame side opposite to the handle, and forms an elongated hook that is useful for grasping skimmer basket handles; thus, the tool permits removal and cleaning of skimmer baskets from pool skimmer wells without the user having to bend over and risk contact of their hands with pool scum, dead leaves, and the occasional live snake or other undesirable live or deceased animals encountered during the cleaning of pool skimmers.Type: GrantFiled: December 10, 1992Date of Patent: August 30, 1994Assignees: Edward L. Wall, Frank Lee WallInventors: Edward L. Wall, Frank L. Wall
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Patent number: 5338446Abstract: A filter unit capable of receiving a cartridge-type filter element is provided for use in-line with a suction-type pool cleaning device. The unit has an elongated housing with intake and outlet ports at opposite ends. The intake port may be connected via a hose to a pool cleaning device and the outlet port to a suction port in the pool circulation system. The unit can use a filter cartridge with an element that offers a filtration coarseness somewhere between that of the system filter and a strainer element. The housing may be adapted to receive a strainer basket in place of the filter cartridge and thus serve as a conventional leaf-trap.Type: GrantFiled: February 12, 1993Date of Patent: August 16, 1994Assignee: Rainbow Lifegard Products, Inc.Inventors: Michael L. Schuman, Kenneth E. Price
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Patent number: 5328605Abstract: A filtering module includes a housing consisting of an upper housing section and a lower housing section and a connecting member for connecting the upper and lower housing sections. The upper housing section has a first water port in a first end thereof and a pair of substantially L-shaped recesses in a second end thereof. The lower housing section has a second water port in a first end thereof and a second pair of substantially L-shaped recesses in a second end thereof. The connecting member includes a filtering mesh and two pairs of L-shaped protrusions formed on an outer periphery thereof to be fittingly received in associated L-shaped recesses.Type: GrantFiled: July 7, 1993Date of Patent: July 12, 1994Inventor: John H. J. Lin
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Patent number: 5328606Abstract: A spin-on oil filter comprising a generally tubular body housing a filtering element and a retractable, external handle that can be manually gripped and twisted for filter installation and removal. The handle comprises a pair of spaced apart, elongated legs and an integral grip extending between the legs for grasping by a user. A pair of elongated, spaced apart sleeves diametrically extending from the body frictionally slidably captivate the legs. A stop is disposed on the distal end of each leg to limit displacement of the handle. The arched legs yieldably maintain said handle in either a semipermanent retracted state or a semipermanent deployed state, as they snappingly frictionally react with the surrounding sleeves. The distal and top portions of the legs are arched more that the intermediate portion, so that the handle may relatively easily slide between the semipermanent retracted or deployed states. The preferred embodiment employs round bar stock to form the handle.Type: GrantFiled: April 8, 1993Date of Patent: July 12, 1994Inventors: Travis Warren, John R. Byrum, Thomas A. Ramsey
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Patent number: 5322625Abstract: A filter element 28 for a gravity-flow water filter. An inlet screen 44 divides a cylinder 48 into two functionally distinct portions, an overflow chamber 24, and a filter body 26 which contains a filter medium 54. A wire half-loop 16 suspends overflow chamber 24 from an adjustable water source and positions overflow chamber 24 to catch the water outflow from the source. Wire half-loop 16 also positions overflow chamber 24 at a distance from the source so that there is a gap 22 between overflow chamber 24 and the source. The potential for water rising and spilling from overflow chamber 24 induces a user to adjust the source flow to less than a characteristic rate. When the flow is adjusted so that water level in overflow chamber 24 is not rising, the water level continues dropping until the flow of water from the source continuously enters the screened entrance of filter body 26 with no appreciable pressure head.Type: GrantFiled: August 6, 1992Date of Patent: June 21, 1994Inventor: Gerald Rise
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Patent number: 5308483Abstract: An in-line filter assembly is provided of a type having a housing divided into inlet and outlet chambers by a filter membrane having its periphery fluid-flow-sealed within the housing, the filter being readily disassemblable so that the filter membrane can be removed for identification or analysis of the material filtered from the fluid during use of the filter.Type: GrantFiled: August 27, 1992Date of Patent: May 3, 1994Assignee: Gelman Sciences Inc.Inventors: Eric Sklar, Tod Borton
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Patent number: 5304300Abstract: As filter canisters are utilized by recreational vehicles, provision of a single filter canister to the primary water input line exteriorly of the vehicle is provided. The recreational vehicle includes a filter canister mounted exteriorly of the recreational vehicle exteriorly adjacency to the vehicle's fill nozzles, wherein a first fluid supply conduit is directed to the filter canister and in turn mounts a second fluid supply conduit directed into the fill nozzle of the vehicle to effect filtering of the primary water supply of the vehicle. A flange plate is slidably received within a mounting flange for selective positioning and mounting of the canister during use permitting ease of disassembly of the canister relative to the recreational vehicle for ease of transport of the vehicle.Type: GrantFiled: August 13, 1992Date of Patent: April 19, 1994Inventor: Charles F. Parsons
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Patent number: 5292432Abstract: A fluid filter has a housing which consists of a top housing half 10 and a bottom housing half 11. Between these two housing halves a filter element is disposed. On the bottom housing half is an inlet for the raw fluid, and on the top housing half is an outlet for the clean fluid. The two housing halves are assembled with snap fasteners.Type: GrantFiled: December 15, 1992Date of Patent: March 8, 1994Assignee: Filterwerk Mann & Hummel GmbHInventors: Herbert Jainek, Michael Wolf
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Patent number: 5284580Abstract: A refuse collecting frame for a drainage sewer, particularly a frame placed beneath a cover of a sewer drainage opening to accumulate refuse and permit easy disposal of refuse accumulated therein in order to prevent blockage of the sewer. The refuse collecting frame includes a frame body and a refuse collecting basin. The frame body is preferably a rectangular or cubic frame structure having a dimension corresponding to the opening of the sewer drain. A filtering net or a porous board with a plurality of penetrating holes is incorporated at each lateral side and bottom of the frame. A plurality of right-angled hangers are formed at spaced positions along the upper edges of an open upper side of the frame for firmly hanging the frame on a sewer opening by positioning the right-angled hangers on a stepped portion formed along edges of the sewer opening beneath a separate cover.Type: GrantFiled: August 4, 1992Date of Patent: February 8, 1994Inventor: Shyh-Yuan Shyh
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Patent number: 5284582Abstract: This invention is regarding to a fast connection joint for pipe fitting, particularly for those applications where prevention of water spraying in large quantity is required. Its structural design allows connecting or disconnecting an external pipe or faucet, without the need to shut off the water automatically opens when a pipe or faucet is inserted into the connection joint and automatically closes when the pipe or faucet is withdrawn.Type: GrantFiled: April 3, 1992Date of Patent: February 8, 1994Inventor: Ming-Tung Yang
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Patent number: 5256285Abstract: A filter container includes a sheet having a base with a liquid inlet pipe and a liquid exhaust pipe and a cap that is integrally attached to the base. A disposable unit container is housed inside the sheet, and the disposable unit container contains cartridge filters. The disposable unit container has a liquid inlet port and a liquid outlet port at a bottom portion thereof, these ports being provided with shut-off valves on the inside of the disposable unit container. The shut-off valves are engagable by the inlet and exhaust pipes on the base of the sheet so that the valves are open by engaging the disposable unit container with the base with the sheet, and are closed by removing the unit container from the base. The bottom end cap supports the lower ends of the cartridge filters above the inlet and outlet ports, and defines the inlet and outlet liquid flow paths. Upper end caps are also provided for sealing the upper ends of the cartridge filters.Type: GrantFiled: December 23, 1991Date of Patent: October 26, 1993Assignee: Kanebo, Ltd.Inventors: Yoji Tomita, Eiichi Oishi, Masanori Kobayashi, Kimiyasu Onda, Hiroshi Miyaji
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Patent number: 5252203Abstract: A device for removing water from an aqueous phase at the bottom of a hydrocarbon fuel tank has an elongated tubular frame with open areas defined by longitudinal members and circumferential ribs. A pad of cotton carrying a coating of highly water-absorbent particles on its inner surface is disposed over the frame, and the pad is enclosed on the outside by one or more layers of cotton muslin. An outside cover of a plastic mesh placed over the fabric provides a limit to outward expansion of the pad upon absorption of water and forces expansion of the particles to occur in a radially inward direction. Absorption of water is enhanced by treating the pad with an aqueous solution of a surfactant and by keeping the device enclosed so as to retain its moistened condition until being placed in use. An elongated metal rod placed inside the tube along its axis serves both as a weight to retain the device in place and as a means for grounding any static electricity.Type: GrantFiled: September 25, 1992Date of Patent: October 12, 1993Inventor: Samuel J. Lyda
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Patent number: 5242588Abstract: Filter unit assembly located at an operator-designated position is provided for enabling fluid flow through a removable mesh filter and ready disconnectibility from a vacuum line with the avoidance of liquid spillage from the filter unit assembly. The filter unit has a chamber which is open at one end and closed at its other end except for an outlet conduit displaced from the longitudinal axis of the chamber, first and second outwardly extending grip means which are displaced from each other about the longitudinal axis of the chamber, first and second supports for permitting the unit to rest in different stable positions, and a cap member for which engages and closes the front end of the chamber and has an axial inlet.Type: GrantFiled: September 26, 1991Date of Patent: September 7, 1993Inventor: Ronald K. Reese
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Patent number: 5230795Abstract: An oil filter for an engine including a shell having a cap enclosed at the bottom, the cap having a housing extended upward for receiving a spring and a nut and having a number of holes located around the housing, a filter disposed in the shell, a tube disposed in the shell and having a lower end engaged with the engine, a quick release having a lower end engaged with the tube, the oil filter can be easily locked by the quick release.Type: GrantFiled: December 12, 1991Date of Patent: July 27, 1993Inventor: Wen-Chen Yang
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Patent number: 5228985Abstract: A portable cooking oil filtering unit has an outer housing completely enclosing all the filter stages and providing access to the stages for maintenance purposes via doors and removable closures. The housing has an inlet conduit for connection to a cooking vat drain outlet, and an outlet conduit for returning filtered oil to the cooking vat. A first stage filter in the housing is connected to the inlet conduit for filtering relatively large size particles from the oil, and the filtered oil is connected to at least one additional filter stage for filtering smaller particles from the oil. A pump is connected downstream of the final filter stage, between that filter stage and the outlet conduit, for drawing oil through the filter stages under vacuum rather than pumping it through the filters under positive pressure. One of the filter stages is accessible to allow oil-life enhancing chemicals to be added to the oil.Type: GrantFiled: June 13, 1991Date of Patent: July 20, 1993Assignee: LaRoche Filter Systems, Inc.Inventors: John Wells, Robert E. Lebo, Roger Ignon, Steve G. Hauser, Dan R. Haynes, Sandra Haynes, Robert L. Serber
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Patent number: 5221469Abstract: A filtration system for use in a settling tank includes a star shaped filter having equally spaced radial panels with the filter septums forming the downwardly extending sidewalls of each panel or compartment. The framework of the filter allows radial removal of the filter septums for cleaning and maintenance. A unique pressurized wet seal seals the filter to a clean liquid vacuum delivery duct and can also seal the system pump in the settling tank to the vacuum duct.Type: GrantFiled: December 9, 1991Date of Patent: June 22, 1993Assignee: Hydroflow, Inc.Inventor: Barry A. Nehls
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Patent number: 5219525Abstract: An apparatus for determining impurities in liquids has a funnel having a first end and a smaller diameter outlet having an outer periphery. A funnel holder releasably holds the funnel. A portable test film carrier, removably engageable with the funnel holder, holds the test film. The test film carrier includes a mechanism for removably securing and releasably tensioning the test film within the test film carrier. A uniform test area is provided on the test film. The apparatus provides a high degree of test result reproducibility.Type: GrantFiled: September 11, 1990Date of Patent: June 15, 1993Inventor: Phillip D. Harrison
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Patent number: 5217610Abstract: An apparatus is described for removing metal particles from a liquid by means of a bag filter containing a plurality of magnets in linearly elongated interior pockets. A liquid containing metal particles passes from the interior of the bag filter through its exterior. The magnetic force associated with the magnets contained on the inside of the bag filter attract the metal particles thereto and hold such particles there against the pockets while the liquid passes through the bag filter.Type: GrantFiled: March 18, 1992Date of Patent: June 8, 1993Assignee: Elite Commercial & Industrial, Inc.Inventors: Judith M. McClain, Virginia R. Harden
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Patent number: 5209845Abstract: A revised sealing structure for an injection molded filter canister, which is resistant to leaks despite the periodic warping of the lid. A nearly square cross-section groove is placed in the body of the filter around the perimeter of the body open end. Within the groove is placed a "lathe cut" gasket; this is an elastomeric gasket having a precision rectangular cross section. On the lid, centered so as to be positioned opposite the groove in the body, and sized to be nearly centered in the groove, is at least one raised, circular ridge. With the addition of the ridge to the lid, in combination with the lathe cut gasket and the revised groove, that the lid may be easily placed in sealing contact with the body, and that the incidence of leaks is substantially eliminated in reinforced plastic molded filters. No special care or skill is needed of the workman in placing and fastening the lid to the filter body to achieve a tight seal.Type: GrantFiled: June 11, 1991Date of Patent: May 11, 1993Inventor: Charles Sims
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Patent number: 5207903Abstract: A modular filter drain assembly for a duplex filter having two upright filter canisters each containing a plurality of replaceable cylindrical filter elements includes a sump base pan, liquid impervious, with sides walls embracing the lower portion of the filter canisters and of the entire drain assembly; a stand outboard of each of the filter canisters, each of the stands having vertical legs at corners, a top drain pan near an upper end of the legs and supported thereby, a filter element support pan intermediate the top drain pan and the sump pan, and a platform extending between the stands. The top drain pan has filter element receiving passages near the platform and a drain passage.Type: GrantFiled: October 16, 1992Date of Patent: May 4, 1993Inventor: Melbourne F. Giberson
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Patent number: 5198113Abstract: A filtering arrangement is provided for effluent from a septic tank prior to passage to a drain field or other disposal. The filtering arrangement makes use of an open-top, U-shaped filter means into which the septic effluent is conducted from the top, preferably through a T-fitting providing an open-topped channel leading into the U-shaped filter. The filter is preferably formed of an outer perforated casing and an inner lining of an open-cell-type polymeric material which effects the filtering of the effluent. The U-shaped filter is preferably suspended from the T-fitting. The arrangement provides fail-safe filtering automatically adjustable for varying flow rates and conditions of the filter. The polymeric filter medium is changed periodically to maintain efficiency.Type: GrantFiled: October 23, 1990Date of Patent: March 30, 1993Inventor: Byron C. Daniels
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Patent number: RE34274Abstract: An engagement member, which is detachably securable to the liquid outlet nipple of a filter receiving fitting, is movably carried by a filter housing which also carries an annular seal which resides against the sealing surface of the fitting. An actuating rod extending from the engagement means is received at one end of a lever which is pivotally secured to the housing. In response to movement of the lever, the housing moves relative the engagement member and the seal is separated from the sealing surface.Type: GrantFiled: July 10, 1991Date of Patent: June 8, 1993Assignee: Zipoff Oil Filter Inc.Inventor: Kenneth A. Foust