Patents Examined by W. L. Walker
  • Patent number: 6139737
    Abstract: A transmission filter (10) includes a ring-shaped magnetic body (18) positioned therein in surrounding relationship with the filter media (14) to attract and retain magnetically susceptible particles in transmission fluid flowing through the filter (10). The preferred magnetic body (18) is integrally formed of ferrite-filled nylon, ultrasonically welded to the housing (12), and magnetically polarized only on the inboard surface (66) thereof.
    Type: Grant
    Filed: September 4, 1998
    Date of Patent: October 31, 2000
    Assignee: SPX Corporation
    Inventor: John W. Gizowski
  • Patent number: 6139736
    Abstract: A U-shaped side of a yoke is mounted on the confronting sides of two rotating plates attached to the inside of a magnetically agglomerating and treating tank, and a plurality of magnets, each having a magnetic force of not less than 12,000 gausses, are mounted on the confronting sides of the yoke, respectively, and the gap between the faces of the confronting magnets is set at 300 mm to form a magnetic field. Liquid containing impurities, such as magnetic and non-magnetic suspensions is caused to flow into this magnetic field for contact with the magnets for a predetermined period of time, so that the non-magnetic suspension is magnetically agglomerated together with the magnetic suspension, so as to be attracted to the magnets, and the magnetically agglomerated matter adhering to the surfaces of the magnets is separated.
    Type: Grant
    Filed: October 6, 1998
    Date of Patent: October 31, 2000
    Inventor: Mitsuru Inaba
  • Patent number: 6139747
    Abstract: A process for cleaning up the wastewaters which originate from the preparation of alcohols. The alcohol preparation includes an aldolization reaction followed by hydrogenation and then alcohol distillation. The resulting wastewaters include 3 wastewater fractions from respective steps in the alcohol preparation. The process for cleaning up these wastewaters include the steps of (a) combining two of the three fractions and adjusting the pH of the combination, (b) bringing at least one of the fractions into contact with a coalescing filter, and (c) extracting a mixture of all three fractions.
    Type: Grant
    Filed: December 16, 1998
    Date of Patent: October 31, 2000
    Assignee: Celanese GmbH
    Inventors: Mariola Rotzheim, Wolfgang Zgorzelski
  • Patent number: 6139729
    Abstract: An apparatus for reclaiming gray water includes a drainage conduit (41), a main drainage conduit (35), a gray water conduit (26), a filter apparatus (27), and a storage vessel (28). The drainage conduit is coupled to the drain (40) of a source of gray water (21) and to the main drainage conduit. The gray water conduit extends from the drain into and through the drainage conduit and then into and through a predetermined length of the main drainage conduit to the filtering apparatus. The vessel is provided for receiving and storing filtered gray water from the filtering apparatus. Preferably, the gray water conduit includes a funnel (45) for conducting gray water from the drain and into the proximal end of the gray water conduit. The funnel includes a grating (50) and at least one opening (51) for permitting the gray water to flow into the drainage conduit, bypassing the gray water conduit, in case the gray water conduit becomes obstructed.
    Type: Grant
    Filed: August 28, 1998
    Date of Patent: October 31, 2000
    Inventor: Ismael Gonzalez, Jr.
  • Patent number: 6139741
    Abstract: A filter system (50) includes first and second filter heads each including a housing receptacle and a filter receptacle. The second filter head (10) includes an inlet (42) providing fluid communication to the housing receptacle; an unfiltered-fluid outlet (44) connected to the inlet of the first filter head (9) via an unfiltered-fluid line (64); and a filtered-fluid outlet (46) providing fluid communication to the filter receptacle and connected to the filtered-fluid opening (32) of the first head via a filter-fluid line (62). A filtered-fluid outlet (47) is provided in the first head for filtered fluid to leave the system. A plug (34) is also included to prevent fluid communication between the filtered- and unfiltered-fluid outlets within the bore (24) of the second filter head.
    Type: Grant
    Filed: June 19, 1998
    Date of Patent: October 31, 2000
    Assignee: Cuno Incorporated
    Inventor: Donald McGibbon
  • Patent number: 6139725
    Abstract: An oil reclamation device includes a full flow filter (10) fitted around a partial flow filter (12) within an open-ended casing (8). The open end of the casing is capped by a housing defining a vaporization chamber (6). In normal operation, oil flows from oil passage (14) through the full flow filter (10) to a branched leg (22). A metering jet (34) provided in the branched leg allows a minor portion of the oil to flow through the partial flow filter and then into the vaporization chamber. The full flow filter extracts solid contaminants having a particle size of 15 microns or greater. The partial flow filter extracts solid contaminants of 1 micron or greater. The filter element of the partial flow filter is composed of compressed cotton fibers and preferably has a higher density in an upper end adjacent the vaporization chamber. In the vaporization chamber, liquid contaminants are removed from the minor portion by a heating element (72).
    Type: Grant
    Filed: September 22, 1998
    Date of Patent: October 31, 2000
    Assignee: Purdayn Filter Technologies Inc
    Inventors: Richard Henry Howard Barr, Albert Neal Davies
  • Patent number: 6136192
    Abstract: A sealing ring for use in connection with a filter bag assembly of a filter is disclosed. The sealing ring includes an annular body having an outer annular wall projecting from the body. The outer wall is flexible such that it can engage an adjacent surface of the filter in a liquid-tight manner for forming a seal between the surface and the sealing ring.
    Type: Grant
    Filed: February 12, 1999
    Date of Patent: October 24, 2000
    Assignee: H-Tech, Inc.
    Inventors: Walter Booth, Moshe Gershenson, Leonard Falcone
  • Patent number: 6136191
    Abstract: Disclosed is a separator that extracts solids from a manure slurry. The separator includes a powered rotating drive cylinder, a plurality of fins radially extending from the drive cylinder, and a flexible conveyor belt driven by the drive cylinder. The conveyor belt has a plurality of grooves positioned so that at least one of the fins contacts a substantial portion of one of the grooves as the drive cylinder drives the flexible conveyor belt.
    Type: Grant
    Filed: October 5, 1998
    Date of Patent: October 24, 2000
    Inventors: Donald L. Gribble, Ted A. Gribble
  • Patent number: 6135631
    Abstract: A mixer for a multi-component dispensing cartridge having at least two storage cylinders. The mixer includes an inlet section (4) and a mixer housing (2) having a mixer element group (3). The inlet section includes side by side separate inlets (4A, 4B) that terminate at an end plate (20) and which are adapted to connect with the storage cylinders. The mixer housing includes an internal face (21) that is parallel with the top surface (19) of the end plate to define a merging chamber (23) therebetween. The components flow from the inlets in a direction parallel to the top surface of the end plate forcing them to premix within the merging chamber before reaching the dividing edge (8) of the first mixer element. The merging chamber can also include a separating ridge (17) dividing the inlet openings (20A, 20B) and a U-shaped baffle (16).
    Type: Grant
    Filed: June 18, 1998
    Date of Patent: October 24, 2000
    Inventor: Wilhelm A. Keller
  • Patent number: 6132608
    Abstract: A filter sheet positioned between plates (14) of a filter press has a fluid-impermeable wax layer (11) sealing the sheet's perimeter. The wax preferably comprises ethylene bis stearamide and has a durometer reading of about 75 to about 100 Shore A hardness at 25.degree. C. and 85.degree. C., a melt point of about 110.degree. C. to about 180.degree. C., and a viscosity of less than about 100 cp at 155.degree. C. The wax layer increases the useful life of the filter sheet while providing a sheet which is easily released from a filter press and which retains integrity along the seal during repeated hot water sanitations.
    Type: Grant
    Filed: September 29, 1998
    Date of Patent: October 17, 2000
    Assignee: Cuno Incorporated
    Inventors: Richard D. Sale, Mark W. Schimmel, Richard A. Prince, Norbert Roessler
  • Patent number: 6132613
    Abstract: This invention relates to an apparatus for separating an original feed solution such as seawater into a product solution of decreased concentration (relatively fresh water) and an exhaust solution of increased concentration. The apparatus includes an annular reverse osmosis membrane means, contained in an annular pressure vessel that is housed in a rotor assembly. The rotor is arranged to spin on an axle and is located within an evacuated shroud.
    Type: Grant
    Filed: May 19, 1997
    Date of Patent: October 17, 2000
    Assignee: Her Majesty the Queen in right of Canada, as represented by the Minister of National Defence
    Inventors: David A. Hopkin, Peter M. Wild, Goeffrey W. Vickers, Antony Moilliet
  • Patent number: 6132599
    Abstract: A wastewater treatment unit (10) includes a recirculation chamber (32), a dosing chamber (34) having no direct fluid connection to the recirculation chamber, and at least two filter layers (28,30) in a single tank (12). Each filter layer contains filter media (56) and is located atop the recirculation and dosing chambers. The wastewater treatment unit also includes an influent pipe (50) connected to the recirculation chamber, a recirculation pump (72), a recirculation valve (74), and an effluent discharge pipe (88) connected to the dosing chamber. In operation, the influent pipe directs wastewater entering the unit into the recirculation chamber. The recirculation pump feeds wastewater from the recirculation chamber onto the filter layers. The recirculation valve then directs the filtrate back to the recirculation and dosing chambers. The filtrate is then discharged from the unit via the effluent discharge pipe.
    Type: Grant
    Filed: May 10, 1999
    Date of Patent: October 17, 2000
    Assignee: Earthtek Enviromental Systems, Inc.
    Inventor: Kevin R. Chaffee
  • Patent number: 6132600
    Abstract: A materials treatment system which initially separates liquid and solid components with a separator. The system can be advantageously utilized for household sewage handling, however various components have other applications. Once the separator separates the solids and liquids, a fire tube combusts the solids with microwaves. The liquids exiting the separator are treated in a liquid treatment system which includes additional particle filtration/separation, treatment of the liquids with an oxidant liquid, and an ultraviolet treatment. An advantageous microwave cavity assembly is also provided for dehydration/combustion of solids exiting the separator and/or for solids filtered from liquids in the liquid treatment system.
    Type: Grant
    Filed: July 20, 1998
    Date of Patent: October 17, 2000
    Assignee: Wastech International, Inc.
    Inventors: Guy Marchesseault, John M. Rummler, Heinz Sauk-Schubert, Thomas Beal
  • Patent number: 6129846
    Abstract: An activated carbon-crystalline titanium and/or tin silicate composite for purifying waste streams and method of making. The method involves providing a combination of a synthetic carbon precursor, and titanium and/or tin silicate, followed by curing, carbonizing, and activating the carbon precursor. The composite is used to purify fluid streams such as water, of pollutants such as VOC's, heavy metals such as lead, and chlorine.
    Type: Grant
    Filed: November 2, 1998
    Date of Patent: October 10, 2000
    Assignee: Corning Incorporated
    Inventor: Kishor P. Gadkaree
  • Patent number: 6129451
    Abstract: The invention discloses an apparatus and method for mixing liquid carbon dioxide with an additive or surfactant and then forcibly dispersing the mixture into a cleaning chamber full of liquid carbon dioxide. Valving controls the process of admitting a liquid additive into a two liter reservoir and then admitting liquid carbon dioxide into the two liter reservoir under pressure thus filling the reservoir. The mixture is then admitted to the cleaning chamber under pressure. A nozzle, a plurality of nozzles, or a pipe having apertures therein is used to disperse the mixture inside the cleaning chamber.
    Type: Grant
    Filed: January 12, 1998
    Date of Patent: October 10, 2000
    Assignee: Snap-Tite Technologies, Inc.
    Inventors: Larry R. Rosio, Ed D Fulton
  • Patent number: 6129837
    Abstract: A filtration device for a waste water treatment tank is provided with a level alert device positioned within the filter to provide a warning or alarm when the filter becomes plugged. The level alarm device is positioned so that as the waste water level gets beyond a certain preselected limit an alarm will actuate a micro-switch which is in actuating relation with an alarm device outside the waste water treatment tank.
    Type: Grant
    Filed: November 6, 1998
    Date of Patent: October 10, 2000
    Inventor: Harry L. Nurse, Jr.
  • Patent number: 6123447
    Abstract: The invention relates to a method and a device for feeding layers of tobacco to an intermediate reservoir, including feeding a continual falling, horizontal shifting stream of tobacco to the intermediate reservoir, the falling stream of tobacco being deflected by web-type separators below, which predetermined break points form in the tobacco mass in the intermediate reservoir resulting in vertical columns of tobacco separable from each other, the columns of tobacco separating individually from the tobacco mass and dropping onto a dispensing conveyor.
    Type: Grant
    Filed: November 5, 1998
    Date of Patent: September 26, 2000
    Assignee: Brown & Williamson Tobacco Corporation
    Inventor: Fritz Schelhorn
  • Patent number: 6123848
    Abstract: A process and apparatus for purifying water-insoluble particles is disclosed. The process comprises the steps of continuously recirculating a fluid aqueous suspension of the water-insoluble particles between a filtration system and a suspension reservoir; continuously conducting ultrafiltration of the recirculating suspension at the filtration system to separate an aqueous permeate containing the water-soluble impurities from the recirculating fluid aqueous suspension; continuously discharging the permeate generated by ultrafiltration; adding water to the recirculating fluid aqueous suspension undergoing ultrafiltration at approximately the same volumetric rate per hour as permeate is being discharged; monitoring the purity of the recirculating fluid aqueous suspension; and recovering the purified fluid aqueous suspension after the recirculating fluid aqueous suspension has reached a predetermined purity condition. An apparatus is also disclosed for carrying out the above process.
    Type: Grant
    Filed: February 12, 1998
    Date of Patent: September 26, 2000
    Assignee: Warner-Jenkinson Company, Inc.
    Inventors: Rosa Isabel Quepons Dominguez, Lance Eugene Solter, Danny Thomas Lauff, John David Mitchell, Edward Charles Jantosik, Jr., David Carl Woodward
  • Patent number: 6123696
    Abstract: A method and apparatus for the sequestration of components of a fluid by forcing heavier fractions of the fluid to pass beyond a yieldable partition integrally formed within a bag. Fluid fractions remain sequestered within bag compartments when forces driving the heavier fraction have been removed.
    Type: Grant
    Filed: July 16, 1998
    Date of Patent: September 26, 2000
    Assignee: ThermoGenesis Corp.
    Inventors: Philip Henry Coelho, Pablo Rubinstein
  • Patent number: 6120682
    Abstract: A portable pump-type reverse osmosis apparatus includes a portable cart having a tub-like housing (12). A pair of elongated cylindrically-shaped R.O. units (36 and 37) sandwiched between a support means (25) and a cover means (45) are positioned within the housing. Both the support and the cover means include a contoured surface having recesses (29, 30, 46, and 47) that snugly engage a substantial portion of the R.O. units. A pump (55) enclosed by a spacer (65) is positioned above the cover means. A water container (75) is positioned above the pump to receive, hold, and dispense purified water from the R.O. units. To protect the unit from an inadequate water supply, a pressure switch (120) is included to permit operation of the R.O. units only when the incoming line pressure is within a preselected range.
    Type: Grant
    Filed: October 2, 1998
    Date of Patent: September 19, 2000
    Inventor: James E. Cook