Patents by Inventor Charles H. Pollard

Charles H. Pollard 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).

  • Device for digging a trench
    Patent number: 5355597
    Abstract: A device for digging a trench having a vertical face and a sloping face. The device includes a rotor configured to rotate about an axis of rotation and means for moving the device in a direction of travel substantially perpendicular to the axis of rotation. The rotor includes a longitudinal rotor member and angled end portions coupled to the longitudinal rotor member. The rotor may also include a plurality of teeth-like elements coupled to the angled end portions.
    Type: Grant
    Filed: April 16, 1993
    Date of Patent: October 18, 1994
    Assignee: Brown Manufacturing Corporation
    Inventor: Charles H. Pollard
  • Trencher
    Patent number: 5226248
    Abstract: A trencher for digging a trench having a vertical face and a sloping face. The trencher includes a frame and means for moving the trencher over the surface of the ground. A rotor is connected to drive means which rotate the rotor, thereby digging the trench. The rotor includes a longitudinal rotor member coupled to a transverse rotor member. The rotor may also include a plurality of teeth-like elements coupled to the transverse rotor member.
    Type: Grant
    Filed: June 26, 1992
    Date of Patent: July 13, 1993
    Assignee: Brown Manufacturing Corporation
    Inventor: Charles H. Pollard