Patents by Inventor David L Caraffa

David L Caraffa 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: 8235401
    Abstract: The lever assist device which is attached to the axle of a transport dolly has a foot pedal which is spring biased to a first, vertical inactive position, may be engaged by the foot of a user to reduce the draw force required to rotate the loaded dolly onto its wheels for displacement.
    Type: Grant
    Filed: June 15, 2010
    Date of Patent: August 7, 2012
    Inventors: Rick Scriven, David L Caraffa