Patents by Inventor Karl S. Nordlund

Karl S. Nordlund 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: 4122963
    Abstract: An automotive goods-transport vehicle has first and second wheeled chassis sections interconnected by a coupling device. A main power unit raises a forward portion of the second chassis section relative to the first chassis section and a pair of remote power units raise wheeled chassis arms of the second chassis section to in turn raise the back portion of second chassis section. The main power unit cooperates with the remote power units such that the latter are operated as slave units to the main power unit to coordinate the movements of all of the power units.
    Type: Grant
    Filed: February 24, 1977
    Date of Patent: October 31, 1978
    Inventors: Kjell W. Berglund, Karl S. Nordlund
  • Patent number: 4072086
    Abstract: A driving assembly for moving one unit with respect to another, for instance, a working unit with respect to a frame unit. Preferred practical applications for the driving assembly are lifting platforms or presses. The driving assembly includes a flat, enclosed, flexible container or bladder disposed between the two units. End wall portions of the container comprise the major surface area thereof. When pressure is introduced into the container, the walls thereof bear entirely against opposed bearing portions of the respective units and against a limiting wall. The invention allows for use of a very thin walled container for lifting large loads.
    Type: Grant
    Filed: February 10, 1976
    Date of Patent: February 7, 1978
    Inventors: Karl S. Nordlund, Kjell Berglund