Patents by Inventor Kjell Mattsson

Kjell Mattsson 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: 4487130
    Abstract: A hollow charge for causing a primary effect by making a hole in a target (1) and a secondary effect by charge material emanating into the target via this hole (1a) and causing a sudden pressure rise, fire, fragmentation, poison or a corresponding damaging effect within the target. The charge comprises a cavity (9) expanding in the burst direction and covered with a metal layer (10). At the initiation of the charge a forward directed penetrating jet (2) having a high velocity (v.sub.1, v.sub.2) is generated and also a slug (3) with a comparatively low velocity (v.sub.3). The charge further comprises an additional body (11) in front of or integrated with the metal layer for generating a separate jet part (4) at the initiation of the charge, which part (4) follows behind the penetrating jet (2) and is included in the charge material causing the secondary effect.
    Type: Grant
    Filed: January 10, 1983
    Date of Patent: December 11, 1984
    Assignee: AB Bofors
    Inventors: Leif Brattstr/o/ m, Stig Hallstr/o/ m, Bo Gustavsson, Kjell Mattsson
  • Patent number: 4481886
    Abstract: This invention relates to a hollow charge for a missile, projectile, shell or the like. The invention is particularly intended to be used on a missile which is arranged to pass a target and the hollow charge initiated when the missile is over, at the side of or under the target which means that the hollow charge is inclined with respect to the longitudinal axis (13) of the missile. The hollow charge comprises an inner, jet-forming, trumpet-shaped cone member (3) and an outer casing (2) having a substantially straight cylindrical part (8) connected to a conical tapered part (9, 10) to give the hollow charge jet an extremely high front tip velocity as well as a low velocity gradient.
    Type: Grant
    Filed: January 14, 1983
    Date of Patent: November 13, 1984
    Assignee: Aktiebolaget Bofors
    Inventors: Leif Brattstrom, Kjell Mattsson, Bertil Arvidsson
  • Patent number: 4267567
    Abstract: An electric igniter is disclosed which comprises two elements made of electrically conducting material, a body separating the elements and made of electrically insulating material, such as glass or material containing glass, at least one further electrically conducting element arranged on a surface common to the two elements and the body for connecting the two elements electrically, and also a pyrotechnical composition in contact with the surface and the further element. Burning of the composition can be initiated by means of heat developed in the further, initiating element.
    Type: Grant
    Filed: April 10, 1978
    Date of Patent: May 12, 1981
    Assignee: Aktiebolaget Bofors
    Inventors: Kurt Nygaard, Kjell Mattsson, Sven-Erik Bratt
  • Patent number: D277597
    Type: Grant
    Filed: March 18, 1982
    Date of Patent: February 12, 1985
    Assignee: Aktiebolaget Bofors
    Inventors: Torsten Wik, Christer Lagerstam, Kurt Pettersson, Kjell Mattsson