Patents by Inventor Alan Ravenhall

Alan Ravenhall 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).

  • Manufacture of vehicle disc wheels
    Patent number: 3951563
    Abstract: A method of truing a spigot located disc wheel comprising clamping the wheel between two adaptors, rotating the wheel, measuring the radial displacements at each bead seat, and operating a borer in response to the displacements to bore a central spigot hole in the true center of the wheel.
    Type: Grant
    Filed: August 29, 1973
    Date of Patent: April 20, 1976
    Assignee: Dunlop Limited
    Inventor: Alan Ravenhall