Patents by Inventor Frederick Leslie Hart

Frederick Leslie Hart 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: 4100247
    Abstract: A method of manufacturing a disc wheel which is of generally Y-shape in cross sections radial of the rotary axis of the wheel, the stem of the Y providing the central disc of the wheel and having holes for the normal wheel bolts or studs, and the bifurcations of the Y providing the wheel rim. The wheel has an annular metal reinforcement having parts located in the stem and in one of the bifurcations of the Y, the reinforcement including holes corresponding to the holes in the finished wheel for the bolts or studs. A covering of plastics material is moulded over the reinforcement, the covering having an integral extension which provides the other bifurcation of the Y. The plastics covering is moulded onto the reinforcement in a mould cavity defined between first and second mould portions which are movable towards and away from one another in directions parallel to the rotary axis of the wheel between open and closed positions.
    Type: Grant
    Filed: March 4, 1976
    Date of Patent: July 11, 1978
    Assignee: GKN Sankey Limited
    Inventors: Terence Humphrey Charles Shead, Frederick Leslie Hart, Herbert John Sharp
  • Patent number: 4076268
    Abstract: The combination of an invalid's wheelchair and a vehicle for conveying the wheelchair from place to place in which the wheelchair is releasably held in position on the floor of the vehicle by cooperating hooks and cross bars and a releasable latch. Means being provided for holding the wheelchair against lateral movement and guides being provided for guiding into inter-engagement the hooks and cross bars on the one hand and the elements of the latch on the other hand as the wheel chair is moved into a predetermined position on the floor.
    Type: Grant
    Filed: September 15, 1976
    Date of Patent: February 28, 1978
    Assignee: GKN Sankey Limited
    Inventor: Frederick Leslie Hart
  • Patent number: D246849
    Type: Grant
    Filed: March 4, 1977
    Date of Patent: January 3, 1978
    Assignee: GKN Sankey Limited
    Inventor: Frederick Leslie Hart