Patents by Inventor Adolfo Del Marmol

Adolfo Del Marmol 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: 7500682
    Abstract: A handcart having two wheel assemblies rotably mounted to a fixed axle and two adjustable secondary wheel assemblies rotably mounted to the distal ends of two parallel and spaced apart legs pivotally mounted at their other ends to the handcart frame members. The plate is mounted to a fixed location on the frame and the pivoting legs include elongated slots that receive inwardly extending pivoting axles perpendicularly mounted to the pivoting legs. The pivoting legs are releasably adjusted at one of a plurality of angular positions with a positioning mechanism on each of the pivoting legs that includes a curved plate with indentations.
    Type: Grant
    Filed: February 13, 2006
    Date of Patent: March 10, 2009
    Inventor: Adolfo Del Marmol