Patents by Inventor Rick Bierworth

Rick Bierworth 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: 8205561
    Abstract: A frame includes a pair of parallel arms that are transversely spaced apart from one another. A first brace interconnects the parallel arms at their respective leading ends and a second brace interconnects the parallel arms at their respective mid-lengths. A table has a first end hingedly connected to the second brace. A first and second plurality of teeth is provided along an extent of the first and second arms, respectively. First and second support struts hingedly interconnect the table to preselected teeth when the table is in a first angular position relative to the frame. First and second book supports are slideably mounted on the table and lockable into any selected position. The parallel arms are releasably attached to the armrests of a conventional wheelchair. The support struts are disengaged from the teeth to enable folding the table into a horizontal storage position where it overlies the frame.
    Type: Grant
    Filed: September 21, 2009
    Date of Patent: June 26, 2012
    Assignee: University of South Florida
    Inventor: Rick Bierworth