Patents by Inventor Thomas E. Cleaves

Thomas E. Cleaves 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: 4307876
    Abstract: Energy-absorption apparatus for truck docks constructed and arranged to withstand impact of semi-trailers backing into a truck dock without damage to the dock over a long period of time. The apparatus of the invention includes a plurality of spring steel leaves disposed in dependent relation from a point above the level of the dock to a point below the dock level so as to accommodate truck trailers of varying heights.
    Type: Grant
    Filed: May 14, 1979
    Date of Patent: December 29, 1981
    Inventor: Thomas E. Cleaves