Patents by Inventor William D. Kaiser

William D. Kaiser 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: 5203755
    Abstract: In an exercise apparatus of the type in which a user is suspended in an inverted position for the purpose applying traction to his spinal column and for the purpose of performing strengthening exercises such as abdominal rotations and oblique curls, the user is provided with an unrestricted exercise space by mounting the conventional pivotable pelvic cushion and knee cushion assembly at the upper end of a single forwardly inclined post so that obstructing structure members are not used.
    Type: Grant
    Filed: January 30, 1992
    Date of Patent: April 20, 1993
    Inventor: William D. Kaiser