Patents by Inventor James E. Hagelthorn

James E. Hagelthorn 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).

  • Locking frictional D-ring
    Patent number: 4993746
    Abstract: A guide ring is provided for an automotive seat belt system which includes a roller mounted for free rotational movement during normal guide ring operation and for frictional engagement with one side of the seat belt upon imposition of a load by the occupant in an emergency situation.
    Type: Grant
    Filed: September 5, 1989
    Date of Patent: February 19, 1991
    Assignee: Ford Motor Company
    Inventor: James E. Hagelthorn