Patents by Inventor Roland W. Friestad

Roland W. Friestad 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).

  • Force-resisting structure
    Patent number: 5027638
    Abstract: A force-resisting structure, such as a press frame, is composed of a plurality of substantially planar loops each made from a single piece of metal plate. The loops are connected together in spaced, parallel relation by bolts which perform essentially no force-resisting function. The structure contains no welds. All components requiring machining are machined before assembly, and there are no machining operations thereafter.
    Type: Grant
    Filed: June 22, 1990
    Date of Patent: July 2, 1991
    Inventor: Roland W. Friestad