Patents by Inventor Lars-Birger Lundstrom

Lars-Birger Lundstrom 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: 6145568
    Abstract: A door maneuvering arrangement for opening and closing a door. The arrangement includes a line loop connected to a part of the door, a drive wheel, a motor for reversibly rotating the drive wheel and a plurality of guide pulleys for guiding the line loop. First guide pulleys are mounted in the vicinity of the drive wheel and cause a first line section of the line loop to bear on and extend in an omega-shape path around a first portion of the circumference of the drive wheel. Second guide pulleys are mounted in the vicinity of the drive wheel and caused a second line section of the line loop to bear on and extend in an omega-shape path around a second portion of the circumference of the drive wheel.
    Type: Grant
    Filed: November 6, 1998
    Date of Patent: November 14, 2000
    Assignee: Megadoor AB
    Inventor: Lars Birger Lundstrom
  • Patent number: D291832
    Type: Grant
    Filed: August 21, 1984
    Date of Patent: September 8, 1987
    Assignee: HB Megaron
    Inventor: Lars-Birger Lundstrom
  • Patent number: D292025
    Type: Grant
    Filed: August 21, 1984
    Date of Patent: September 22, 1987
    Assignee: H. B. Megaron
    Inventor: Lars-Birger Lundstrom