Patents by Inventor Willis E. Dahlman

Willis E. Dahlman 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).

  • Method and apparatus for measuring the isometric muscle strength of multiple muscle groups in the human body
    Patent number: 4702108
    Abstract: An apparatus and method for isometric muscle strength testing using a chair apparatus (40) having a support frame structure (42), a seat assembly (46), a foot rest assembly (60) and load cells (100) interconnected to the support frame structure (42) for measuring the isometric force exerted by any of a plurality of muscle groups in a human subject's body. The load cells (100) are possibly positioned on six track systems; a posterior track (80a), left and right lateral tracks (80b,c) an anterior track (80d), a forward upper track (80e) and a forward lower track (80f) to enable alignment with the muscle group selected for testing.
    Type: Grant
    Filed: February 4, 1986
    Date of Patent: October 27, 1987
    Assignees: Regents of the Univ. of Minnesota, Twin City Surgical, Inc.
    Inventors: Louis R. Amundsen, Robert P. Patterson, Tanya L. Baxter, Glenn N. Scudder, Wayne O. Duescher, Willis E. Dahlman, Gary W. Schukar, Clarence I. Steinback