Patents by Inventor Donald R. Whiteman

Donald R. Whiteman 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).

  • Spreader for lifting containers
    Patent number: 4093090
    Abstract: A spreader for lifting containers mountable upon the tines of a fork truck or the like for movement rotatably about a generally vertical axis and horizontally in a direction transversely of the tines. Container engaging devices adjacent the corners of the spreader frame are movable in unison in a direction parallel to the longitudinal tine axes.
    Type: Grant
    Filed: November 29, 1974
    Date of Patent: June 6, 1978
    Assignee: RPC Corporation
    Inventor: Donald R. Whiteman
  • Grappler spreader with overhead grappling arm storage
    Patent number: 4014447
    Abstract: A grappler spreader adapted for mounting on a fork lift or other type of cantilever-loaded carrier, and for handling cargo containers and piggyback trailers. The spreader to be described is especially designed for use on front or side-loading carriers. It is advantageously used in stacking and unstacking closely placed containers in terminal yards through provision of grappling arms which may be stored above the main frame of a spreader within a vertical projection of a cargo container handled by the spreader.
    Type: Grant
    Filed: November 20, 1974
    Date of Patent: March 29, 1977
    Assignee: RPC Corporation
    Inventors: Donald R. Whiteman, Dale H. Guthrie