Patents by Inventor Donald C. Moulson

Donald C. Moulson 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).

  • Feller director
    Patent number: 4281693
    Abstract: A feller head for a tree felling apparatus comprises a first forward projection adjacent a tree trunk receiving recess. A chain saw is mounted within the first projection and extends away from the first projection in the direction of the recess. A motor for powering the chain saw is operatively connected to the chain saw within the first projection. There is a mechanism for slidably moving the chain saw along a curved path within the projection. The path is convex in the direction of the recess.
    Type: Grant
    Filed: July 18, 1979
    Date of Patent: August 4, 1981
    Assignee: Forest Engineering Research Institute of Canada
    Inventor: Donald C. Moulson