Patents by Inventor Gunnar Andersson

Gunnar Andersson has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 5017218
    Abstract: Method and apparatus for the production of metal granules from a molten metal are disclosed. A molten metal stream is directed against an impact element located above the surface of water in a water tank. The impact of the molten metal upon the impact element causes the molten metal to disintegrate into drops which spread out radially from the impact element. The drops fall down into the water below the impact element in an annular region a certain radial distance from the impact element. The radial distance is varied by varying the velocity of the molten metal stream relative to the impact element at the instant of impact, and/or by varying the height of the impact element above the water surface, in order to substantially continuously vary the radius of the annular region in which the molten metal drops hit the water surface.By using the method and apparatus of the present invention it is possible to granulate metals and metal alloys having a low sinking rate in water and a high enthalpy.
    Type: Grant
    Filed: June 12, 1989
    Date of Patent: May 21, 1991
    Assignee: Uddholm Tooling Aktiebolag
    Inventors: Per-.ANG.ke Lundstrom, Gunnar A. Andersson, .ANG.ke West, Juhan Magi
  • Patent number: 4838663
    Abstract: A new liquid crystal electro-optic device similar to the SSFLC device is described. It uses the same kind of polar chiral smectics and the same geometry as the SSFLC device (thin sample in the "book-shelf" layer arrangement) but instead of using a tilted smectic phase like the C* phase, it utilizes the above-lying, essentially non-ferroelectric A phase. The achievable optical intensity modulation is considerably lower than for the SSFLC device, but the device is about one hundred times faster. It is thus appropriate for modulator rather than for display applications. Sample fabrication is simpler and, finally, the device is insensitive to polarization compensation from external charges. The electro-optic switching at moderate applied voltages can be detected through the full range of the A phase.
    Type: Grant
    Filed: October 7, 1987
    Date of Patent: June 13, 1989
    Assignee: S.A.R.L. S.T. Lagerwall
    Inventors: Sven T. Lagerwall, Gunnar Andersson, Ingolf Dahl, Wojciech Kuczynski, Kent Sharp, Bengt Stebler
  • Patent number: 4445166
    Abstract: A high voltage converter converts an incoming high frequency pulse voltage to a direct voltage at a level which can be varied by varying the pulse width. The converter contains a transformer (T) with its primary side (p) connected to a pulse source (U) and to a controllable switch (K). The secondary side of the transformer is divided into two sections (s.sub.1, s.sub.2). One section (s.sub.1) is connected to a rectifier in the form of a conventional voltage doubler circuit (D1, D2, Cd1, Cd2) with capacitors in parallel with the secondary winding sections (s.sub.1, s.sub.2). The other section (s.sub.2) is connected to a rectifier bridge (D3-D6) and a smoothing filer (L.sub.f, C.sub.f). The converter output is the doubler circuit output in series with the smoothing filter output.
    Type: Grant
    Filed: April 8, 1982
    Date of Patent: April 24, 1984
    Assignee: Telefonaktiebolaget L M Ericsson
    Inventors: Lars-Ake Berglund, Carl-Gunnar Andersson
  • Patent number: 4401342
    Abstract: This invention relates to a device for eliminating vibrations of a driver's chair.The device according to the invention is characterized in that it comprises a carrying frame, a cradle located within the carrying frame and carrying the driver's chair. The cradle is provided with a number of rotatably supported pulleys and is carried relative to the carrying frame in that the pulleys contact at least two wires or ropes supported by the carrying frame. One end of the wires is secured resiliently in the carrying frame, and the wires extend transversely to the driving direction for the vehicle, in which the device is to be mounted. A damping arrangement is also provided between the cradle and carrying frame.
    Type: Grant
    Filed: October 27, 1981
    Date of Patent: August 30, 1983
    Inventor: Karl-Gunnar Andersson
  • Patent number: 4259141
    Abstract: In apparatus for application of a tape of insulating material provided with a heat fixing binder to a substantially elongated rectangular electrical conductor in the longitudinal direction thereof, the conductor is heated, a portion of the tape is contacted with the first side of the conductor and other portions of the tape are successively contacted with other respective sides of the conductor. The successive contacting stations after the first contacting station each include apparatus for folding a portion of the tape about an edge of the conductor and then contacting a portion of the tape with a side of the conductor including that edge. The conductor may be additionally heated after several folding and contacting operations, and pressure may be applied to the conductor and tape after the tape has been completely fixed to the conductor.
    Type: Grant
    Filed: August 28, 1978
    Date of Patent: March 31, 1981
    Assignee: ASEA Aktiebolag
    Inventors: Gunnar Andersson, Gunnar Borgstrom
  • Patent number: 4159920
    Abstract: In method for application of a tape of insulating material provided with a heat fixing binder to a substantially elongated rectangular electrical conductor in the longitudinal direction thereof, the conductor is heated, a portion of the tape is contacted with the first side of the conductor and other portions of the tape are successively contacted with other respective sides of the conductor. The successive steps of contacting after the first contacting step each include a first step of folding a portion of the tape about an edge of the conductor and then contacting a portion of the tape with a side of the conductor including that edge. The conductor may be additionally heated after several steps of folding and contacting, and pressure may be applied to the conductor and tape after the tape has been completely fixed to the conductor.
    Type: Grant
    Filed: April 22, 1977
    Date of Patent: July 3, 1979
    Assignee: ASEA Aktiebolag
    Inventors: Gunnar Andersson, Gunnar Borgstrom
  • Patent number: 4111611
    Abstract: An automatic locking system is provided for securing a submersible pump to vertical guide wires. The pump is automatically locked to the wires upon lowering of the pump and released upon raising the pump. Stationary cams in the pumping station actuate the locking system. The system assures locking when the pump is lowered and eliminates the need for manual unlocking by the serviceman when raised.
    Type: Grant
    Filed: July 29, 1977
    Date of Patent: September 5, 1978
    Assignee: ITT Industries, Incorporated
    Inventors: Karl-Gunnar Andersson, Karl Evert Sjostrand
  • Patent number: 4075466
    Abstract: A method and an arrangement is provided for detecting a faulty memory element among a plurality of memory elements. Two element categories are introduced. If a memory element belongs to the first category normal writing and reading processes are carried out. If a memory element belongs to the second category the writing processes as well as the reading processes are combined with an inversion a (binary complementing) of the actual transferred binary information. The category of an element is shifted at times, for example, before each writing process.
    Type: Grant
    Filed: August 30, 1976
    Date of Patent: February 21, 1978
    Assignee: Telefonaktiebolaget L M Ericsson
    Inventors: Bjorn Erik Rutger Jonsson, Ulf Ivan Gunnar Andersson, Gustav Ruben Bergman
  • Patent number: 4068816
    Abstract: Assembly for mounting a cross bar by compression between two opposite walls including two end parts each having a U-shaped yoke to embrace the associated end of the cross bar. One of the end parts has fixed pegs to engage the associated wall, and the other end part has threaded clamping bolts to be screwed against the other wall to clamp the support assembly to the walls by axial compression forces through the cross bar.
    Type: Grant
    Filed: December 2, 1976
    Date of Patent: January 17, 1978
    Assignee: Friktions-Stamp AB
    Inventor: Karl Gunnar Andersson