Patents by Inventor Robert L. Stack, Jr.

Robert L. Stack, Jr. 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).

  • Sliding fifth wheel rack stop block
    Patent number: 5265900
    Abstract: Stop blocks are mounted on racks supporting a sliding fifth wheel assembly on a truck/tractor for stopping forward or rearward adjusting movement of the fifth wheel relative to the racks at a selected position for distributing weight between the forward and rearward axles of the truck/tractor.The stop blocks each contain a pawl vertically biased downwardly by a spring for engagement with notches between adjacent teeth of the sliding fifth wheel racks. The pawl is moved vertically by a lever projecting out of the respective stop block for moving the block to a selected position longitudinally of the rack.
    Type: Grant
    Filed: October 19, 1992
    Date of Patent: November 30, 1993
    Inventors: Robert L. Stack, Jr., Daniel L. Riddles, William W. Riddles