Patents by Inventor Douglas K. Hansen

Douglas K. Hansen 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).

  • Screw action grip with adjustable stiffness and alignment guides
    Patent number: 6526837
    Abstract: A test specimen holder for holding a test specimen in a material testing machine includes screw operated actuators with removable blocks of material. Preferably, a plurality of blocks of material is provided with a varying degree of compliance. Alignment guides indicating the relative position of jaw plates are also provided.
    Type: Grant
    Filed: February 24, 2000
    Date of Patent: March 4, 2003
    Assignee: MTS Systems Corporation
    Inventors: Vogel P. Grote, Douglas K. Hansen, Michael E. Bloom