Patents by Inventor Edward J. Mroczka

Edward J. Mroczka 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).

  • Collapsible wheelbarrow/stretcher
    Patent number: 5806878
    Abstract: A collapsible wheelbarrow has a wheel assembly. The wheel assembly has a collapsible rim and a tire mounted to the rim. The tire comprises a flexible woven fabric and an inner tube for expanding the tire. The wheel assembly rotatably mounts to an axle. A plurality of spaced apart handles extend from the axle and cargo are mounted between the handles for supporting cargo on the wheelbarrow.
    Type: Grant
    Filed: September 17, 1996
    Date of Patent: September 15, 1998
    Assignee: Double D Development Co. L.L.C.
    Inventors: David E. Mroczka, Edward J. Mroczka