Patents Represented by Law Firm Dennison, Dennison, Meserole & Pollack
  • Production of hydraulic cements and cement-forming materials
    Patent number: 4152169
    Abstract: Material for the production of hydraulic cements or for pozzolanic materials which develop cementatious characteristics after blending with an activator, is treated in an expanded precessive plasma in a plasma reactor of the type in which at least one plasma gun orbits about a vertical axis and is directed obliquely to said axis towards a counter electrode. The material preferably includes at least a proportion of a naturally occurring carbonaceous material of low calorific value, such as colliery spoil, oil shale or oil sand. In such case, as the material emerges from the plasma it is preferably contacted with air to effect combustion of the combustible material. The thermal energy thus released is recovered by suitable instrumentalities and is preferably converted to electrical energy to power the plasma reactor.
    Type: Grant
    Filed: November 3, 1977
    Date of Patent: May 1, 1979
    Assignee: Tetronics Research and Development Co. Ltd.
    Inventor: Jozef K. Tylko
  • Method of applying electrodes to high temperature heating elements for use in resistance furnaces
    Patent number: 4152572
    Abstract: An electric resistance furnace adapted for operation at about 1,800.degree. C. or higher temperatures even in an oxidizing or neutral atmosphere is disclosed. The furnace has a cylindrical heating chamber defined by a generally cylindrical heating element made of ceramic material, such as zirconium oxide and lanthanum chromide. The heating element has a wall thickness which is very small at its middle section and gradually increases toward each end. The middle section of the heating element defines the useful part of the heating chamber into which the heat generated by the heating element is effectively concentrated. An electrode comprising an annular foil of platinum is provided at each end of the heating element to pass electric current therethrough.
    Type: Grant
    Filed: August 16, 1976
    Date of Patent: May 1, 1979
    Assignee: Daido Steel Co., Ltd.
    Inventors: Takaaki Noda, Anne M. Anthony
  • Message registration pulse generator
    Patent number: 4151372
    Abstract: An apparatus for generating message unit pulses for message rate billing which includes means responsive to answer pulse recognition signals and electronic answer supervision from a central office for providing separate and variable numbers of pulses per event based on duration, time of day and distance of call.
    Type: Grant
    Filed: February 16, 1978
    Date of Patent: April 24, 1979
    Assignee: DND Teletronics, Inc.
    Inventors: Fred E. Fitts, III, J. D. Batteas
  • Process for treatment of sewage in a gravity sewer
    Patent number: 4148726
    Abstract: Pure oxygen or a gas containing more oxygen than air is injected under pressure into sewage held in or flowing through a sewer. This injection can be used to prevent the concentration of dissolved oxygen in the sewer falling to a level at which there occurs bacterial reduction to hydrogen sulfide of sulfate present in the sewage. The injection can also be used to oxidize to sulfur any sulfide dissolved in the sewage.The pure oxygen or the gas containing more oxygen than air may be injected into sewage flowing through a sewage pipe forming part of a gravity sewer, into a pump used to transfer the sewage through the sewer, or into a part of the sewer where sewage is collected before being transferred through the sewer.
    Type: Grant
    Filed: June 22, 1976
    Date of Patent: April 10, 1979
    Inventor: Kenneth C. Smith
  • U-bolt clamp
    Patent number: 4147384
    Abstract: A clamp for securing together in locked relationship a pair of telescoped pipes or tubes. The clamp consists of a novel U-bolt having a swaged flat rim on the inner portion of its bight which reduces the radius of the bight portion, and a novel saddle member having a semicircular cut-out and being further chamfered adjacent the ends of the semicircular cut-out to define a greater diameter. The assembly when in its loading position will accept a pipe joint of greater outside diameter than the inner diameter of the tightened clamp; and wherein tightening of the clamp initially deforms the pipe joint into an ovaled configuration and subsequently returns it to a circular configuration and impresses a bead thereabout for 360.degree..
    Type: Grant
    Filed: January 12, 1978
    Date of Patent: April 3, 1979
    Assignee: Heckethorn Manufacturing Co.
    Inventor: John E. Heckethorn
  • Pump impeller
    Patent number: 4146353
    Abstract: The present invention relates to a pump impeller for moving a fluid, comprising a hub on which at least one blade is fixed, wherein a support connects each blade to the hub and extends radially, winding helically with respect to the axis of said hub, while each blade extends in a direction substantially perpendicular to the radial direction of each support. One application of the present invention is the production of a pump impeller with high speed of rotation and high yield.
    Type: Grant
    Filed: July 19, 1977
    Date of Patent: March 27, 1979
    Inventor: Pierre Carrouset
  • Revolving anode for an X-ray tube filled with liquid metal
    Patent number: 4146815
    Abstract: A revolving anode for an X-ray tube comprising a hollow rotating shell including a support composed of molybdenum or molybdenum-based alloy and a thin layer of tungsten, the shell being filled with liquid metal or alloy such as sodium. The zone of impact of the electrons on the shell essentially comprises the layer of tungsten or tungsten alloy in direct contact with the liquid metal.
    Type: Grant
    Filed: December 22, 1977
    Date of Patent: March 27, 1979
    Assignee: Eurotungstene
    Inventor: Bruno Childeric
  • Gas separation
    Patent number: 4144038
    Abstract: A process for increasing the proportion of a gas in a gaseous mixture comprising such gas and at least two other constituents. The gaseous mixture in a substantially unpressurized condition is drawn successively through two beds of absorbent which adsorbs the two other constituents respectively by the action of a reduced pressure applied to an outlet of the second adsorbent bed in the series. The beds are then regenerated prior to a further admission of gaseous mixture thereto.
    Type: Grant
    Filed: February 25, 1977
    Date of Patent: March 13, 1979
    Assignee: BOC Limited
    Inventor: John W. Armond
  • Valve for continuously and automatically supplying furnaces with molten metal
    Patent number: 4143674
    Abstract: A valve for use in an apparatus for supplying molten metal by means of a siphon to a furnace. A valve formed by a tube provided with two flanges is placed at the upper part of the siphon, this tube extending by a certain length below the level of the flanges, so as to form an annular space with each of the branches of the siphon in which the gas is trapped during decanting, which prevents the gaskets from being in contact with the molten metal.
    Type: Grant
    Filed: April 12, 1977
    Date of Patent: March 13, 1979
    Assignee: Societe de Vente de l'Aluminium Pechiney
    Inventor: Robert Portalier
  • Gas separation
    Patent number: 4144037
    Abstract: A process for increasing the proportion of a gas in a gaseous mixture of which it is a component. The gaseous mixture is allowed to be drawn through an adsorbent bed in a substantially unpressurized condition by the action of a reduced pressure applied to an outlet of the bed. The bed is then regenerated prior to a further admission of the gaseous mixture thereto.
    Type: Grant
    Filed: February 25, 1977
    Date of Patent: March 13, 1979
    Assignee: Boc Limited
    Inventors: John W. Armond, Martyn S. Ray
  • Archer's bow sight
    Patent number: 4142297
    Abstract: In archery bow sights having spaced apart front and rear sighting elements provided with rigid attachment to the bow and extending either forwardly or rearwardly from the bow riser section rapid, easily-made fine adjustments about the vertical and lateral axes of the bow, and basic rough general technique adjustments about the vertical, lateral (two adjustments of differing sensitivity provided) and longitudinal axes are provided, in addition to a multiple-sighting line hunting sight having the same structure for the basic rough and fine adjustments.
    Type: Grant
    Filed: December 27, 1977
    Date of Patent: March 6, 1979
    Inventor: Anthony L. Altier
  • Treatment of waste water
    Patent number: 4141823
    Abstract: A process for treating aqueous waste material having a biochemical oxygen demand, which process comprises passing the aqueous waste material along an elongate treatment tank or other elongate container for containing a volume of such material, having a transverse support structure or structures extending along the length of the tank or container and supporting aerobic micro-organisms, and dissolving an oxygenating gas in aqueous waste material at a plurality of positions spaced along the tank.
    Type: Grant
    Filed: August 3, 1976
    Date of Patent: February 27, 1979
    Assignee: The British Oxygen Company Limited
    Inventors: Kenneth C. Smith, Michael E. Garrett
  • Method and composition for therapy and control of bovine mastitis
    Patent number: 4140766
    Abstract: A method is disclosed for the therapy and control of subclinical and clinical mastitis by the oral or parenteral administration of a composition having as active constituents iodine, potassium iodide and an aqueous solution of acetic acid made from the alcoholic and subsequent acetous fermentations of the juice of apples, in an aqueous carrier.
    Type: Grant
    Filed: October 25, 1977
    Date of Patent: February 20, 1979
    Inventor: Theodore P. Kalogris
  • Method of arc welding under water
    Patent number: 4139758
    Abstract: In a method of arc welding under water or at superatmospheric pressure (or both) the weld is made in a chamber containing a gaseous atmosphere. The weld metal is deposited from flux-cored welding wire whose core contains strong deoxidant(s) such as aluminium, magnesium, titanium, zirconium, lithium and calcium. A shielding gas containing a selected proportion of oxygen or oxygen-containing gas but consisting mainly of an inert gas such as argon or helium is employed to surround the arc. The shielding gas is constituted by the atmosphere in the chamber.
    Type: Grant
    Filed: January 12, 1977
    Date of Patent: February 13, 1979
    Inventor: Brian E. Pinfold
  • Electrolyzer for industrial production of fluorine
    Patent number: 4139447
    Abstract: A new electrolyzer for the industrial production of fluorine gas which uses bipolar and monopolar electrodes within a tank containing an electrolyte of an anhydrous mixture of mineral fluorides and hydrogen fluoride. A compact construction is achieved which requires only two current connections.
    Type: Grant
    Filed: March 12, 1976
    Date of Patent: February 13, 1979
    Assignee: Produits Chimiques Ugine Kuhlmann
    Inventors: Robert Faron, Annie Cathala
  • Dewrinkling and permanent crease reforming of garments
    Patent number: 4139661
    Abstract: A composition and process for dewrinkling garments and more particularly for the process of reforming permanent creased garments wherein an undesired crease may be removed and a new permanent crease made in the fabric.
    Type: Grant
    Filed: March 9, 1977
    Date of Patent: February 13, 1979
    Inventors: Demetrius B. Anagnostis, Wilfred N. Lariviere
  • Ladder assembly
    Patent number: 4139078
    Abstract: A ladder assembly, primarily for use on trucks and other vehicles, has a ladder slidable between a retracted, stored position in a ladder storage assembly, and an extended, operative position in which the ladder projects from an extrance of the storage assembly. First and second retainers are provided for retaining the ladder relative to the storage assembly in the stored and operative positions, respectively, and the ladder has opposed lateral projections slidable along guides formed by parallel side members having U-shaped cross-sections the side members being spaced apart to receive the ladder therebetween and forming opposite sides of the storage assembly.
    Type: Grant
    Filed: October 28, 1977
    Date of Patent: February 13, 1979
    Inventor: John R. Keller
  • Apparatus for preparation of blood samples
    Patent number: 4137866
    Abstract: Forming a blood trace of predetermined length and width on a flexible supporting strip by depositing a blood sample on the strip, contacting the sample with a trace tip carried by an adjacent strip and moving the sample relative to the tip through a predetermined course to control the width and length of said trace.
    Type: Grant
    Filed: April 6, 1977
    Date of Patent: February 6, 1979
    Inventors: Charles P. Heanley, Jozef K. Tylko, David G. S. Page
  • Liquid treatment
    Patent number: 4138330
    Abstract: Apparatus and method for dissolving gas in a body of liquid comprising a gas/liquid contactor device having a plurality of discrete conduit sections of different cross-sectional area connected in series or in parallel.A stream of liquid is passed through the device and gas is introduced into the stream upstream of the device to establish a turbulent gas/liquid contact zone in at least one of the conduit sections.The liquid stream with gas dissolved in it is introduced into the main body of liquid.
    Type: Grant
    Filed: March 21, 1977
    Date of Patent: February 6, 1979
    Assignee: Boc Limited
    Inventor: Michael E. Garrett
  • Film material for forming blackboards
    Patent number: 4138523
    Abstract: Disclosed is a plastics film material for forming blackboards, which comprises a film of polyethylene or polypropylene covered on one surface with a layer of paint. The layer of paint is made of polyurethane resin composed of polyol and polyisocyanate and containing a coloring pigment, a bulking agent, such as powdered alumina and powdered calcium carbonate, and in some cases, silicone oil or polyethylene wax. The film material is attached to a base board with the layer of paint exposed on the outside to form a blackboard.
    Type: Grant
    Filed: December 16, 1977
    Date of Patent: February 6, 1979
    Assignee: Suzuka Paint Manufacturing Company, Limited
    Inventors: Tadashi Katsurayama, Yoshio Nakamuro