Patents by Inventor David M. Pinnell

David M. Pinnell 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: 5028062
    Abstract: An all purpose dolly which includes a dolly frame characterized by parallel horizontal frame members which extend downwardly and inwardly to define drop frame segments for supporting firewood, and vertical frame members upward-standing from the horizontal frame members and connected at the top to facilitate stacking the firewood upwardly on the dolly frame. A removable frame cover is seated on the vertical frame members and the dolly frame is fitted with a pivoting front axle and a fixed rear axle, with front and rear wheels mounted on the front and rear axles, respectively. A tongue extends from vertically pivotal attachment to the front axle for removably attaching the all purpose dolly to a tractor or other vehicle. A conversion panel is fitted with spaced guide rails for selectively and removably engaging the horizontal frame members and converting the all purpose dolly to a gardening and lawn dolly or the like.
    Type: Grant
    Filed: January 22, 1990
    Date of Patent: July 2, 1991
    Inventors: David M. Pinnell, Clinton D. Weaver