Patents by Inventor Duane I. Dumond

Duane I. Dumond 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).

  • Patent number: 4226331
    Abstract: A hydraulically actuated hoist adapted for mounting on a farm tractor, the hoist including a base of generally inverted T-shaped configuration having a horizontally extending portion and a vertically extending portion, a telescopic boom having one end portion pivotally connected to the vertically extending portion of the base, the hoist also including a pair of downwardly extending support legs fixed to the horizontally extending portion of the base, and an elongate support post pivotally connected to the end portion of the boom remote from the base, the post being adapted to overlie the boom and being pivotable to a vertically extending position whereby the post and the legs cooperate to form a tripodal support for the hoist.
    Type: Grant
    Filed: August 8, 1977
    Date of Patent: October 7, 1980
    Inventor: Duane I. Dumond