Patents by Inventor Amiel W. Francke

Amiel W. Francke 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: 4491318
    Abstract: A variable speed balance or teeter board including a platform, a fulcrum extending downwardly from the bottom of the platform into engagement with a supporting surface. The fulcrum comprising a variety of selectively used members of different shape and height for varying the angularity of the platform tilting action, and damping means comprising a plurality of members of different compressibility selectively or collectively interposed between the platform and the supporting surface for varying the speed of the tilting action of the platform upon application of unevenly distributed weight to the top of the platform, the particular damping member employed being dependent upon the ability of the individual using the balance board.
    Type: Grant
    Filed: September 30, 1982
    Date of Patent: January 1, 1985
    Inventor: Amiel W. Francke