Patents by Inventor George A. Boyum

George A. Boyum 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).

  • Tree-trimming apparatus
    Patent number: 4411070
    Abstract: A tree-trimming apparatus mounted on a mobile support vehicle. The apparatus includes a telescoping boom pivotally mounted on a pedestal. The pedestal is pivotally mounted to a turntable which is rotatably mounted on the support vehicle. An operator's station is mounted on the pedestal to provide control of the apparatus. A large diameter circular saw is mounted at the end of the boom and is powered by a high speed hydraulic motor to provide high cutting efficiency. A fiberglass boom and electrically non-conductive hoses provide maximum safety for the operator.
    Type: Grant
    Filed: September 23, 1981
    Date of Patent: October 25, 1983
    Assignee: Jarraff Industries, Inc.
    Inventors: George A. Boyum, Robert A. Renner, Ralph Lovelace