Patents by Inventor James A. Dumbrell

James A. Dumbrell 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).

  • Safety flap for power-operated lawnmower
    Patent number: 5133175
    Abstract: A safety device for mowing equipment is disclosed which, when used in combination with a mower housing that controls the random direction of propelled objects, will further control the direction and distance over which the objects are propelled, while not restricting the efficient discharge of grass clippings from the mower housing. More specifically, the invention provides a safety device that is adjustable, without presenting an inconvenience or hazard to the equipment operator, in the degree to which it will restrict the direction and distance of propelled objects.
    Type: Grant
    Filed: May 1, 1991
    Date of Patent: July 28, 1992
    Inventor: James A. Dumbrell