Patents by Inventor Richard S. Drummond

Richard S. Drummond 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: 4504071
    Abstract: A wheeled hand truck of the type having an elongated frame with a load engaging platform and a set of wheels near one end and user handles near the other end includes a stairstep engaging leg which is pivotally mounted on the frame intermediate the ends and selectively movable between a stowed position and an extended position where the leg will selectively engage a step and prevent sliding movement of the truck down a flight of steps. An auxiliary handle is also provided to aid movement of loads along staircases with that auxiliary handle being selectively movable between a retracted position where the truck may be used in a conventional manner and an operative position extending obliquely from the frame from the end opposite the platform to provide a user with a more readily accessible gripping region when moving the truck along a flight of steps.
    Type: Grant
    Filed: September 27, 1982
    Date of Patent: March 12, 1985
    Inventor: Richard S. Drummond