Patents by Inventor Michael R. Grotefend

Michael R. Grotefend 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: 5806087
    Abstract: A safety apparatus for various size passengers and tandem riders on unenclosed variable speed motorized and non-motorized vehicles which includes a dual belt configuration, a primary belt worn by the driver or front passenger which girds the waist and two (2) secondary belts attached to the primary belt, each having mounted thereon a handle, the position of which is adjustable around the waist in a manner to maintain the secondary belts in equidistant positions comfortably and effectively relative to the middle of the driver or front passenger's back.
    Type: Grant
    Filed: August 6, 1997
    Date of Patent: September 15, 1998
    Inventor: Michael R. Grotefend