Patents by Inventor Fred J. Ringer

Fred J. Ringer 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).

  • Combination wheelchair desk and storage area
    Patent number: 5454581
    Abstract: A desk pivotally mounted to a wheelchair frame having a storage compartment. Through hinges, the desk cover pivots, opening and closing the storage compartment, and the desk cover can be completely removed to open the storage area. Further, the desk cover can be held open by a support latch or locked closed. Associated with the desk is a rod on which the desk pivots. The rod is then attached to the wheelchair frame with clamps. The height of the desk relative to the wheelchair is adjustable by multiple methods.
    Type: Grant
    Filed: December 7, 1993
    Date of Patent: October 3, 1995
    Assignee: Ringer & Adams, P.D.
    Inventor: Fred J. Ringer