Patents Represented by Law Firm Larson, Taylor and Hinds
  • Installations for the treatment of strip material in a gaseous medium
    Patent number: 4253246
    Abstract: The invention relates to installations for the treatment in a gaseous medium of a strip material passing over rollers (6).Each roller (6) is driven in rotation by an endless belt (10) serving also for the embarkment of the strip, this endless belt passing over drive pulleys (15) which drive the corresponding roller (6) by coupling means (101) ensuring a "free wheel" function and a "coupler" function.The installation is useful for the heat treatment, especially the drying of a strip material.
    Type: Grant
    Filed: July 26, 1979
    Date of Patent: March 3, 1981
    Assignee: Air Industrie
    Inventor: Paul Marchal
  • Container with cover of plastics material
    Patent number: 4252248
    Abstract: A container (1) is provided with a cover (2) which has a guarantee strip (4) which can be divided along a design tearing line. In this arrangement, the guarantee strip (4) engages under a holding bead (9) and at the same time is protected from unauthorized manipulation of the guarantee strip, by a protective bead (10). So that the container which is produced by an injection moulding process can be produced by means of axially openable moulding tools, the holding bead and the protective bead are interrupted in such a way, and are arranged offset relative to each other in gaps, in such a way, that the respective holding bead (9) only extends, on the outside wall of the container, over the length over which the protective bead (10) is interrupted. In this way there is no undercut configuration at any point, which would prevent axial retraction of the moulding tools or axial ejection of the container.
    Type: Grant
    Filed: July 25, 1979
    Date of Patent: February 24, 1981
    Assignee: Albert Obrist AG
    Inventors: Albert Obrist, Hans-Werner Breuer
  • Foldable wrist braced slingshot
    Patent number: 4250861
    Abstract: A folding slingshot having a yolk, a hand grip and elastic members connected to said yolk. A wrist brace is frictionally, detachably and pivotably mounted to the hand grip near the base thereof. Said wrist brace comprises a pair of longitudinal members diverging rearwardly from the hand grip and spaced apart to receive the wrist between them and an end member integral with said longitudinal members engageable with the user's wrist. A groove is on each side of said handle near the base thereof for receipt of end portions of said longitudinal members. A protruding stop member on said hand grip overhanges each of said grooves and prevents further rotation of said wrist brace.
    Type: Grant
    Filed: October 17, 1978
    Date of Patent: February 17, 1981
    Inventor: Howard Ellenburg
  • Gas concrete mold runner and method of use
    Patent number: 4250947
    Abstract: A method and an apparatus is provided for casting molten metallic materials through runners in the form of casting gates, flow-through tubes, feeders, rising gates and the like. The method basically comprises casting the molten metals through runners defined by bodies of porous calcium hydro-silicate such as gas concrete. A filler, such as quartz, may be used. The runner bodies are formed of gas concrete and provided with a moisture ratio of 3 to 30% so as to afford progressive evaporation of the moisture during casting to thereby produce a cooling effect on the runner walls. The runner bodies can be reinforced.
    Type: Grant
    Filed: April 20, 1978
    Date of Patent: February 17, 1981
    Assignee: Intong Aktiebolag
    Inventors: Per Jakobsson, Ingemar Larsson
  • Aircraft instrument
    Patent number: 4250746
    Abstract: A combined vertical speed and windshear indicator instrument for an aircraft has a graduated dial (2) and a conventionally driven pointer (3) for indicating the vertical speed. In addition the instrument has an independent pointer (4) which is driven so that it indicates, to the same scale as the vertical speed, the rate of change of total energy of the aircraft (energy rate) according to the formula dh/dt+(V/g)(dV/dt) where h is the height of the aircraft and V is its true air speed. Under stable flight conditions the pointers (3 and 4) will track together, but if there are any sudden changes, particularly changes due to windshear, the pointers will separate to indicate the effect of the changes so that the necessary corrective action can be taken by the pilot.
    Type: Grant
    Filed: July 9, 1979
    Date of Patent: February 17, 1981
    Assignee: British Airways Board
    Inventors: Craig D. Vassie, Alexander B. Fisher
  • Apparatus for manufacturing cages for set screws
    Patent number: 4250732
    Abstract: The invention concerns metal cages for set screw--cage systems intended to be mounted on a metal sheet accessible from only one of its faces. According to one aspect of the invention, the sidewalls 4 of the cage 3 of such a system are provided with an annular rib 16 projecting radially outwards, the external diameter of cage 3 at the rib 16 being slightly greater than the diameter of the hole 12 in which the cage is engaged, owing to which the cage is axially locked on the metal sheet. Dies are provided for the shaping of cage members. The invention finds application particularly in the fitting out of the bodies of vehicles.
    Type: Grant
    Filed: November 13, 1978
    Date of Patent: February 17, 1981
    Assignee: C.O.M.E.T. Compagnie de Materiel et d'Equipements Techniques
    Inventor: Richard Moryl
  • Fluidic devices
    Patent number: 4249575
    Abstract: A vortex diode has a cylindrical vortex chamber having an enlarged peripheral channel, one or more tangential ports communicating with the channel and two co-axially arranged axial ports on opposite end walls of the chamber. The height of the chamber is less than three quarters of the diameter of the axial ports. The channel may communicate with the vortex chamber either radially or tangentially with respect to the channel.
    Type: Grant
    Filed: April 11, 1979
    Date of Patent: February 10, 1981
    Assignee: United Kingdom Atomic Energy Authority
    Inventors: Nicholas Syred, Peter J. Roberts
  • Sector sliding plate brick having discharge ports and an improved sliding nozzle apparatus
    Patent number: 4249680
    Abstract: A sector sliding plate brick having a plurality of discharge ports for use in a sliding nozzle apparatus for casting molten metal, characterized in that the plane configuration of said sliding plate brick forms a sector shape or a shape similar to sector, each center of the discharge ports of more than two pierced on said sector plane exists at point corresponding to a definite distance from the common center of an arc passing through the center of each discharge port, and the sliding plate brick can revolve on said common center as fulcrum.
    Type: Grant
    Filed: November 9, 1978
    Date of Patent: February 10, 1981
    Assignee: Shinagawa Refractories Co., Ltd.
    Inventors: Morihiro Kimura, Kenji Yamamoto, Masahiko Nose
  • Process and apparatus for separating tar from a tar sand mixture
    Patent number: 4250017
    Abstract: A process and apparatus for separating tar from a tar sand mixture. The separating step is by a novel mechanical process avoiding the complication of heating, freezing and the use of solvents. In the process a suitable suspension liquid is added to a tar sand mixture which is then struck with a plurality of striker arms to separate tar from said particles and agglomerate tar into droplets. After the striking step, the sand particles are allowed to settle to the bottom and tar droplets rise and float, the tar droplets are skimmed off the mixture, and the tar droplets are also scraped off the striker arms. The resulting tar droplets are washed at least once to remove remaining sand particles.
    Type: Grant
    Filed: October 12, 1979
    Date of Patent: February 10, 1981
    Inventor: Lucio V. Reale
  • Purification of Factor VIII
    Patent number: 4250008
    Abstract: PCT No. PCT/GB78/00038 Sec. 371 Date June 22, 1979 Sec. 102(e) Date June 22, 1979, PCT Filed Nov. 10, 1978 PCT Pub. No. WO 79/00299 PCT Pub. Date May 31, 1979.The invention is concerned with purification of Factor VIII containing solutions, such as blood plasma, by continuous flow electrophoresis.Hitherto, purification of such solutions has been performed by methods such as cryoprecipitation which however have the disadvantages of poor recovery. In our invention, this problem is overcome by adjusting the pH of a Factor VIII containing solution to be in a range where the stability of Factor VIII is not adversely affected (e.g. 6 to 9) and then subjecting the solution to continuous flow electrophoresis to give purified Factor VIII fractions. If desired, the fractions may be further purified.
    Type: Grant
    Filed: June 22, 1979
    Date of Patent: February 10, 1981
    Assignee: United Kingdom Atomic Energy Authority
    Inventor: Patrick Mattock
  • Programmed-sequence fluid distributor for use in feed and maintenance of detergent concentration in the washing bath of a dish-washing machine or the like
    Patent number: 4249573
    Abstract: A programmed sequence fluid distributor system is provided which is particularly adapted for controlling fluid feeding and the maintenance of the detergent concentration in the washing bath of a dish-washing machine or the like. The system basically comprises a fluid source, a conduit arrangement for moving the fluid to a desired location, a pump for controlling the flow of the fluid and a programmer for controlling the pump. The programmer comprises an electronic circuit including at least two stages. These stages each comprise RC type oscillators wherein the resistive branch includes a potentiometer for setting the duration of the cycle associated with that stage. A binary pulse counter counts the pulses produced by the oscillator and ultimately controls the stopping and starting of the pump during the various operating cycles of the machine, by controlling energization of a relay in the pump circuit.
    Type: Grant
    Filed: September 20, 1978
    Date of Patent: February 10, 1981
    Assignee: Odev S.A.
    Inventor: Rene G. Chevallier
  • Adjustable orthopedic foot splint
    Patent number: 4249523
    Abstract: An adjustable orthopedic foot splint is disclosed which maintains a desired angle between the feet of the user but which otherwise allows virtually full freedom of movement of the feet. Movements of the feet which are allowed include: forwards and backwards; up and down; together and apart; and tilting of the toe upwards and downwards. Thus, the user can walk, climb steps, or crawl in an approximately normal manner.In a preferred embodiment, hinged pairs of parallelogram links pivotally interconnect the shoes of the user. In another preferred embodiment, the pivotal connection is vertically adjustable and is resiliently urged to a horizontal position.
    Type: Grant
    Filed: May 7, 1979
    Date of Patent: February 10, 1981
    Assignee: BioResearch Inc.
    Inventor: Robert E. Bidwell
  • Damper means for helicopter rotors
    Patent number: 4249862
    Abstract: A helicopter rotor includes a rotor head having, for each of a plurality of rotor blades, an elastomeric bearing and a damper that is arranged to provide controlled restraint of rotor blade movement in both the flap and lead/lag planes. The damper can be arranged to exhibit either substantially equal stiffness in both operational planes or any desired stiffness ratio. In a preferred embodiment of the latter arrangement, the desired stiffness in the respective planes are provided by separate components incorporated in the single damper. The damper may be situated either inboard or outboard of the elastomeric bearing.
    Type: Grant
    Filed: December 5, 1977
    Date of Patent: February 10, 1981
    Assignee: Westland Aircraft Limited
    Inventors: Alan Waddington, Alfred C. Martin
  • Electromechanical transducers
    Patent number: 4250415
    Abstract: The invention relates to electromechanical transducers comprising an electret 4 between two electricity conducting electrodes 1 and 2. A solid intermediate layer 7 having a different deformability from that of the electret is placed between said electret and an electrode, the material forming said layer having an electrical resistivity higher than 10.sup.15 ohms.cm (for instance a silicone elastomer) and said layer having a smooth and continuous face in intimate contact with the whole of the useful area of the charged face of the electret.
    Type: Grant
    Filed: June 29, 1978
    Date of Patent: February 10, 1981
    Inventors: Jacques Lewiner, Claude Hennion
  • Self priming devices for indirect domestic water heating systems
    Patent number: 4248378
    Abstract: This invention relates to self-priming devices for indirect domestic water heating systems which device acts as expansion and contraction chambers for primary and secondary water in the system. The device consists of a closed housing divided internally by a wall intermediate its ends to form axially disposed first and second chambers. A open ended tubular member extends from the wall into the second chamber to provide communication between the chambers and an inlet and outlet is provided in the second chamber adjacent the wall. At least one inlet is provided in the first chamber at the end remote from the wall. The first chamber is connected to a primary water circuit and the second chamber is connected to the secondary water circuit to separate the water in one circuit from the water in the other circuit. The volume of the first chamber is substantially 4 to 4.
    Type: Grant
    Filed: February 6, 1979
    Date of Patent: February 3, 1981
    Assignee: Fleming Fabrications Limited
    Inventor: Thomas R. Carruthers
  • End cutting unit for a mining machine
    Patent number: 4248483
    Abstract: An end cutting unit for a mining machine comprises a cutting unit body, a ranging arm carrying a drivable cutting device, said ranging arm being carried by the cutting unit body at a location towards a first end thereof, and a transmission for transmitting drive to the cutting device. In order that the end cutting unit may be adaptable to advance and retreat mining uses as required, transmission is provided with two drive couplings respectively at said first end and at the opposite second end of the cutting unit body to enable rotary drive to be transmitted to the cutting device from a selected one of said drive couplings, and the ranging arm is capable of being set in a position, about which the arm can be ranged, in which the arm extends generally away from the end of the cutting unit body at which is located whichever drive coupling has been selected to impart rotary drive to the cutting device.
    Type: Grant
    Filed: May 14, 1979
    Date of Patent: February 3, 1981
    Assignee: Dresser Europe SA
    Inventor: George A. Parrott
  • Barn scraper drive assembly
    Patent number: 4248406
    Abstract: The drive motor is pivotally supported axially within the frame so that it rotates slightly if the torque of the motor increases due to the scraper assembly being impeded by animals, equipment, broken slats or the like. This actuates a reversing switch thus reversing the movement of the scraper assembly. If desired, an electric shock circuit can be included which is actuated first, in case the obstruction is an animal. If the animal moves away from the scraper then the scraper proceeds as the reversing switch has not been actuated at this time.
    Type: Grant
    Filed: April 2, 1979
    Date of Patent: February 3, 1981
    Assignee: Agricultural Research & Development, Inc.
    Inventor: Frank R. Laurenz
  • Lifting and lowering device for handling goods containers
    Patent number: 4248467
    Abstract: A lifting and lowering device for attachment to the corner of an ISO goods container, comprising twist-lock devices carried at one side of a post and a sleeve which is slidable on and lockable to the post allowing adjustment of the spacing of the twist-lock devices, an extendable leg with its operating ram housed within the post, and projecting from the opposite side of the post from the twist-lock devices fixed legs or the like give to the device free-standing stability when the leg is fully retracted into the post.
    Type: Grant
    Filed: April 9, 1979
    Date of Patent: February 3, 1981
    Assignee: Modular Distribution Systems Limited
    Inventors: David Allen, Robert J. Rowley
  • Air cushion vehicle flexible skirts
    Patent number: 4248320
    Abstract: An apertured flexible sheet component for an air cushion vehicle flexible skirt, such as an apertured section of a flexible skirt bag member, comprises reinforced flexible sheet material including a reinforcing fabric having substantial spacings between groups of cords from which the fabric is formed. The reinforcing fabric is coated with elastomeric material and apertures are formed in the elastomeric material within the spacings between the groups of cords in the reinforcing fabric so that no broken cords are caused by formation of the apertures.
    Type: Grant
    Filed: June 21, 1979
    Date of Patent: February 3, 1981
    Assignee: British Hovercraft Corporation Limited
    Inventor: Raymond L. Wheeler
  • Gas burners
    Patent number: 4248586
    Abstract: A casing for supporting a radiant refractory panel for surface-combustion heating, in the form of an open-topped ceramic box providing for admission of air and combustible gas as such or as a mixture, the panel being secured by an adhesive-bound glass or other refractory fibre wrapped to cover the join between panel and casing.
    Type: Grant
    Filed: November 9, 1978
    Date of Patent: February 3, 1981
    Assignee: J. Tennant & Sons (Warrington) Limited
    Inventor: Charles F. Cooper