Patents by Inventor George P. McKelvey

George P. McKelvey 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).

  • Steerable wheelchair attachment with powered coupling means
    Patent number: 5207286
    Abstract: A steerable and self-powered attachment for wheelchairs. This attachment is free-standing and includes a powered coupling means which is adapted for simultaneous attachment while the front of a wheelchair, carried thereon, is lifted to provide three wheel contact with the surface. The attachment includes a auxiliary frame, a drive means, a steering means, and the powered coupling means. The attachment is adapted to be coupled to the wheelchair by the occupant by actuation of a switch.
    Type: Grant
    Filed: April 23, 1992
    Date of Patent: May 4, 1993
    Inventor: George P. McKelvey