Patents by Inventor Dale A. Hawks

Dale A. Hawks 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: 4124097
    Abstract: A wheelchair lift device including a platform located in the stepwell of a motorcoach for raising and lowering a wheelchair between a first position wherein the platform is in horizontal alignment with an elevated floor formed with the motorcoach and a second position wherein the platform is at ground level. The device includes foldable hinged sections that are positioned through a linkage to form steps for use by able-bodied persons and are extendible laterally outwardly relative to the stepwell so as to align the hinged sections along a horizontal plane and thereby form the platform for supporting the wheelchair.
    Type: Grant
    Filed: October 4, 1977
    Date of Patent: November 7, 1978
    Assignee: General Motors Corporation
    Inventors: Dale A. Hawks, Daniel L. Kline, James T. Hogan
  • Patent number: 4124100
    Abstract: A wheelchair lift device including a platform located in the stepwell of a motorcoach for raising and lowering a wheelchair and including foldable hinged sections that are movable through a linkage to a first position to form steps for use by able-bodied persons and are extendible laterally outwardly relative to the stepwell to a second position to align the hinged sections along a horizontal plane and thereby form a vertically movable platform for supporting the wheelchair. A locking arrangement including first and second latch means is associated with the hinged sections for locking the latter in the first and second positions.
    Type: Grant
    Filed: February 13, 1978
    Date of Patent: November 7, 1978
    Assignee: General Motors Corporation
    Inventor: Dale A. Hawks