Patents by Inventor Robert Marvin Beekman

Robert Marvin Beekman 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).

  • Trencher guidance via GPS
    Patent number: 6954999
    Abstract: A guidance control system is configured to control the positioning and spatial orientation of a digging implement mounted on a frame of an trenching machine for working a subsurface of earth to a desired trench profile. The position of a dynamic cutting edge of the digging implement is monitored and then controlled so that the sensed dynamic cutting edge position is equal substantially to the calculated dynamic cutting edge position. The guidance control system includes sensors, a processor, and accessible memory providing digital design information regarding the desired trench profile.
    Type: Grant
    Filed: December 13, 2004
    Date of Patent: October 18, 2005
    Assignee: Trimble Navigation Limited
    Inventors: Christopher D. Richardson, Vincent Lansing Lasher, Robert Marvin Beekman