Patents by Inventor Donald D. Critten

Donald D. Critten 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).

  • Slider suspension for semi-trailers
    Patent number: 5378006
    Abstract: A slider frame adapted to be slidably mounted on a semi-trailer having a pair of transversely spaced longitudinally extending body rails on the underside thereof. The slider frame includes a pair of longitudinally extending side rails of C-channel shape. Suspension hangers are fastened to the C-channel rails. A reinforcing pan is mounted in each C-channel rail above each suspension hanger. Tubular cross-members extend between the cross-rails and are attached to the reinforcing pans and the side rails. The reinforcing pans box-in and connect the C-channel rails to the suspension hangers.
    Type: Grant
    Filed: July 21, 1993
    Date of Patent: January 3, 1995
    Assignee: Reyco Industries, Inc.
    Inventors: John W. Stuart, Donald D. Critten