Patents by Inventor Kim D. Christensen

Kim D. Christensen 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).

  • Neck exercising apparatus
    Patent number: 5135445
    Abstract: A neck exercising apparatus (10) including an elongated support member (14) adapted to be suspended from a door (100) and operatively connected to a generally U-shaped leaf spring member (20) having a head rest member (30) movably attached to the outboard leg (22) of the spring member (20); wherein, the position of the head rest member (30) on the spring member (20) determines the amount of resistance provided by the spring member (20).
    Type: Grant
    Filed: April 29, 1991
    Date of Patent: August 4, 1992
    Inventors: Kim D. Christensen, Kent S. Greenawalt, C. F. Sunny Sporer, J. Forrest Moore