Patents by Inventor Brian H. Witty

Brian H. Witty 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).

  • Mechanical digger
    Patent number: 4408949
    Abstract: A mechanical digger comprises a wheel-supported frame, an hydraulically operated digging device mounted on the frame, an engine mounted on the frame and arranged to operate the digging device and a seat arranged on the frame to allow the operator to view and to control the operation of the digging device; the frame is also provided with two wheel mounting locations at either of which a set of wheels can be replaceably mounted. Preferably, the frame is provided with an intermediate mounting location which is capable of mounting replaceably a rear set of ground engaging feet and the front location is capable of mounting replaceably a set of ground engaging feet or the wheel set.
    Type: Grant
    Filed: August 11, 1982
    Date of Patent: October 11, 1983
    Assignee: Mantis Excavators, Ltd.
    Inventor: Brian H. Witty