Patents Assigned to Double D Development Co. L.L.C.
  • 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