Patents Examined by Charles N. Hart
  • Patent number: 4431536
    Abstract: The invention provides for a hydrocarbon skimmer (10) interconnected to the floating roof (30) of a floating roof storage tank (300) wherein a liquid mixture of sour water (40) and hydrocarbons (50) are stored. The hydrocarbon skimmer (10) of the present invention is placed in a formed cavity (100) located on the underside (20) of the floating roof (30) wherein the cavity (100) extends above the surface of the floating roof (30) and is capable of collecting the hydrocarbons (50) from the liquid mixture. A funnel (40) is attached to the underside (20) of the roof (30) in the cavity (100) to extend downwardly into the liquid mixture wherein the funnel (140) has formed perforations (500) near the attachment of the funnel (140) to the underside (20) of the roof (30). A float (110) is operatively connected to the funnel (140) and selectively closes over the perforations (500) when the float (110) is in sour water (40) and opens over the perforations when the float (110) is disposed in hydrocarbons (50).
    Type: Grant
    Filed: December 15, 1982
    Date of Patent: February 14, 1984
    Assignee: Marathon Oil Company
    Inventor: Timothy J. Thompson
  • Patent number: 4431537
    Abstract: A rotating biological contactor for the treatment of waste water comprises the first and second elongate sheets of an equal width spirally wound in multiple turns on a rotatable shaft in a superimposed relation to each other to form a convolute, the first sheet being corrugated with transversely alternately arranged longitudinal rows of deep and shallow corrugations having an equal longitudinal pitch whereby the apexes of the deep corrugations are transversely in alignment with the apexes of the shallow corrugations, with the apexes of the shallow corrugations constituting transversely spaced valleys between the respective adjacent apexes of the deep corrugations, the second sheet being generally flat and provided with embossed longitudinal ridges which fit in the valleys of the first sheet.
    Type: Grant
    Filed: December 27, 1982
    Date of Patent: February 14, 1984
    Inventor: Tetsuji Hirota
  • Patent number: 4430214
    Abstract: A strainer mill mounted in the intake opening of an impeller pump in a swimming pool water circulating system, including a perforated strainer plate mounted transversely of the flow path of water into the impeller pump and a rotary cutter mounted on an extension of the impeller shaft on the intake side and in close proximity to the strainer plate for shredding leaves and other debris received from the swimming pool before entering the impeller pump. The strainer mill is also characterized by a collector receptacle having a sump and an inlet and outlet mounted in the flow path between the swimming pool and the strainer mill for collecting heavier and harder particles which cannot pass through the perforated strainer plate and which are thrown back by the rotary cutter blade.
    Type: Grant
    Filed: September 15, 1982
    Date of Patent: February 7, 1984
    Inventor: Marvin E. Baker
  • Patent number: 4428838
    Abstract: An easily removable tubular filter assembly, such as from a cylindrical array of parallel filter tubes arranged between two spaced parallel circular plates, which array is immersible in a liquid to be filtered. Each filter tube comprises a central open-ended perforated rigid tube with flanged tubular bushings for each end, and a fabric tubular sock which surrounds the perforated tube and tucks in the ends of the tube around the outer flanges of said bushings. A flanged tubular ferrule snugly fits in the bushing at one end of the fabric-covered tube to hold the tucked-in sock in place and seal its flange into an aperture in a wall of a suction chamber which may comprise one of the parallel circular plates of the array assembly.
    Type: Grant
    Filed: December 13, 1982
    Date of Patent: January 31, 1984
    Assignee: Henry Filters, Inc.
    Inventors: John L. Creps, Timothy J. Hainen, Stephen N. McEwen
  • Patent number: 4428835
    Abstract: A strainer for a liquid sucking device and adapted to be attached to the end of a flexible liquid sucking tube of the device. The strainer has an outlet tube adapted to be connected to the flexible liquid sucking tube of the device, a spherical shell integral with the outlet tube, a strainer element attached to the outer surface of the spherical shell and a weight accommodated by the internal cavity of the spherical shell.
    Type: Grant
    Filed: July 1, 1982
    Date of Patent: January 31, 1984
    Assignee: Kioritz Corporation
    Inventor: Akira Nagashima
  • Patent number: 4428833
    Abstract: A spent flake drainer-conveyor for transferring spent flakes from a solvent extraction apparatus to a desolventizer-toaster apparatus, having a closed vapor tight housing extending from the desolventizer-toaster to the solvent extraction apparatus. A drainage section is formed in the housing and contains a screen section through which the flakes are moved. A vacuum source is attached to the drainage section causing a pressure differential across the screen in order to assist in separation of solvent from the flakes as they pass through the screen. A motor torque monitoring device is associated with the drive motor of the picker in the solvent extraction apparatus to provide an indication of the level of flakes in the trough portion of the solvent extraction apparatus.
    Type: Grant
    Filed: July 6, 1982
    Date of Patent: January 31, 1984
    Assignee: The French Oil Mill Machinery Co.
    Inventor: William M. Barger
  • Patent number: 4427551
    Abstract: A unitary method and system for the continuous clarification, and if desired, purification of a liquid medium containing solid particulate matter is described which system comprises.
    Type: Grant
    Filed: September 18, 1981
    Date of Patent: January 24, 1984
    Inventor: Jean Duveau
  • Patent number: 4427545
    Abstract: A fuel filter is provided for internal combustion engines and particularly for diesel engines utilizing a dual filter zone arrangement fed by two separate fuel supply lines, each of these lines being valved to operate in an open mode in which fuel is pumped freely from the fuel tank into the filter zone, and a dump mode, wherein reverse-flow fuel delivered from the other filter zone backwashes the dumping filter zone to purge the filter elements of accumulated particulates.
    Type: Grant
    Filed: December 13, 1982
    Date of Patent: January 24, 1984
    Inventor: Arcadio C. Arguilez
  • Patent number: 4427542
    Abstract: This fuel filter device serves to eliminate the need for priming a fuel pump and bleed-air from fuel injectors, in the event that the fuel storage tank runs dry, or fuel filters are replaced on a fuel consuming device, which employs a fuel injecting system. Primarily, the device includes a housing, having a floating filter on its interior, which rides on a perforated fuel valve rod. The device also includes a floating ball valve attached to the armature of a solenoid, which is secured to a fuel output fitting in the bottom wall of the housing, and in the event of water in the fuel, the solenoid is actuated, and its armature will pull the ball valve down for positive shut-off of fuel flow.
    Type: Grant
    Filed: January 5, 1983
    Date of Patent: January 24, 1984
    Inventor: Richard E. Glover
  • Patent number: 4426289
    Abstract: A rotary screen separator is described for separating liquids and solids from a slurry. The rotary screen separator includes a cylindrical straining screen rotatably mounted for rotation about a substantially horizontal axis. The separator has a drive for rotating the straining screen at a constant low speed. The separator has a slurry feed means mounted within the interior of the straining screen for spreading the slurry into a thin curtain and directing the curtain downward against a downward moving portion of the straining screen to direct the slurry against the inner surface to enable liquid to pass through the screen to the outer surface and to push the solid materials forward along the inside surface to clean the inside surface. A compression roller is freely mounted within the straining screen for rolling with the moving screen to compress the solid material against the inner surface to remove additional liquid.
    Type: Grant
    Filed: August 3, 1981
    Date of Patent: January 17, 1984
    Inventor: Henry V. Svehaug
  • Patent number: 4425233
    Abstract: The thickness of filter plates is a parameter determining the size of the useful volume of filter presses.It is desirable to provide a filter plate which can be dimensioned substantially thinner than heretofore and which moreover can be manufactured in supersize dimensions of, for example, an edge length of 3 m.times.3 m. To provide for high stability and a certain flexibility thereby enabling in a manufacturing of very large filter press plates having relatively thin bottom portions, the bottom portions of the filter plate is divided into at least four quadrants with each of the quadrants including outwardly curved portions, and with the outwardly curved portions of adjacent quadrants being in opposite directions with respect to a center plane of the filter plate.
    Type: Grant
    Filed: June 1, 1982
    Date of Patent: January 10, 1984
    Assignee: Rittershaus & Blecher GmbH
    Inventor: Max Oelbermann
  • Patent number: 4424129
    Abstract: An apparatus for collecting, transporting and dewatering animal waste prior to its introduction into a press for separating the solids therein from the remaining liquid waste.
    Type: Grant
    Filed: June 28, 1982
    Date of Patent: January 3, 1984
    Inventor: Richard E. Bunger
  • Patent number: 4422932
    Abstract: Waste water is led into a container (1) through an inlet (4) at the top. A connection (20) between the inlet (4) and an outlet (21) having a check valve (22) comprises adjacent to the inlet (4) two inverted frusto-conical hollow bodies (24, 25) which are directly connected to each other. The connecting surface between the two hollow bodies (24, 25) is formed as a coarse screen (26). A round fine screen (30), which diverges downwardly, surrounds the hollow bodies (24, 25). Heat exchangers (31) are located in the space between the fine screen (30) and the wall (2) of the container (1). An outlet (5) terminates at the bottom of the container and connects with a riser (6) and via a bend (7) with the sewerage conduit (8). Through the coarse screen (26) the waste water reaches the container, and the heat can reach the heat exchangers (31) through the fine screen (30 ), so that practically uncontaminated water is present at the heat exchangers, and the need for cleansing is substantially diminished.
    Type: Grant
    Filed: February 10, 1982
    Date of Patent: December 27, 1983
    Inventor: Felix Kalberer
  • Patent number: 4422933
    Abstract: This invention is directed to an adjustable-flow water conditioning device. More particularly, this invention is directed to a magnetic water conditioning device which can be manually adjusted to coordinate the conditioning effects of the device with the rate of water flow through the device. The invention is directed to a magnetic water conditioner comprising externally mounted means for permitting the distance and intensity of the magnetic field created within the conditioner by permanent magnets to be adjusted, without any disassembly of the device.
    Type: Grant
    Filed: October 26, 1981
    Date of Patent: December 27, 1983
    Inventors: Severin F. Sverre, John O. Richmond
  • Patent number: 4420040
    Abstract: The present invention comprises a ball catcher having a housing which may contain a stinger, baffles, or both such features therein.
    Type: Grant
    Filed: May 7, 1982
    Date of Patent: December 13, 1983
    Assignee: Halliburton Company
    Inventors: David P. Arbasak, David L. Blake
  • Patent number: 4420404
    Abstract: A process for the dewatering of fine granular material is disclosed. During compression of the material, fluid is expressed and a small percentage of the material is intentionally permitted to escape through a self-cleaning opening in the apparatus. By maintaining the smallest dimension of the opening in the range of one to five times the diameter of the largest particle in the material, the opening remain essentially clear of any material which could cause plugging.
    Type: Grant
    Filed: December 14, 1981
    Date of Patent: December 13, 1983
    Assignee: Dravo Corporation
    Inventors: David W. Coate, Joseph G. Selmeczi
  • Patent number: 4419233
    Abstract: A chlorinator including a housing adapted to be submerged below the pool deck of a swimming pool, including a lower liquid chamber and an upper control chamber, and a chlorine container depending from the control chamber into the liquid chamber, a water inlet line extending through the pool wall below the normal water level of the pool communicating with the housing and the chlorine container, and a liquid outlet conduit connecting the lower liquid chamber to the return line on the downstream side of a Venturi orifice within the return line for discharging chlorine-treated water from the liquid chamber into the return line on the discharge side of the pump into the swimming pool.
    Type: Grant
    Filed: November 18, 1981
    Date of Patent: December 6, 1983
    Inventor: Marvin E. Baker
  • Patent number: 4419232
    Abstract: A device for use in water drains provided with an outer drain grating for preventing accidents and coarse material falling into the drain. The device is intended for separating and collecting particulate impurities, such as sand, wooden pegs and leaves, and also oil and other liquid impurities passing through the grating. To this end, the device includes a holder ring intended to be mounted under the drain grating, and carrying the combination of a coarse-filtering and protecting means and a fine-filtering means. The coarse-filtering and protecting means is cup-shaped and arranged in the holder ring, while the fine-filtering means comprises a filter bag of a flexible and water-permeable cloth or fabric material arranged around the holder ring. The holder ring is preferably funnel-shaped and provided with a mounting flange arranged to be firmly clamped beneath the drain grating, and the coarse-filtering and protecting means comprises preferably a wire basket.
    Type: Grant
    Filed: November 9, 1981
    Date of Patent: December 6, 1983
    Inventors: Oscar S. Arntyr, Thord I. Engstrom
  • Patent number: 4416776
    Abstract: This invention relates to spin-on type oil filter receptacles in general, and more specifically to an improvement to the normal external surface of the body, wherein a plurality of reinforced tapes are wound in opposite directions on either end of the receptacle to facilitate the insertion and removal of the oil filter in close tolerance situations.
    Type: Grant
    Filed: July 26, 1982
    Date of Patent: November 22, 1983
    Inventor: Larry G. Brundidge
  • Patent number: 4415462
    Abstract: A self-cleaning screen and method for screening water for hydraulic turbine intake diversions is disclosed. A check dam is established across a river on the downstream side of a side channel weir which is at a lower elevation than the dam. A fish transport trough is laterally spaced from the weir at a lower elevation and has an inlet upstream of the weir and an outlet downstream of the dam. A screen having a concave profile is connected between the weir and the trough to remove debris from water flowing over the weir. Water flowing through the screen enters a separate channel under the screen for diversion to a hydraulic turbine inlet water application. Intermittent surges of water over the weir flush debris off the edge of the screen into the trough to clean the screen.
    Type: Grant
    Filed: August 12, 1982
    Date of Patent: November 15, 1983
    Inventors: Harvey E. Finch, James J. Strong