Patents by Inventor Curt Timothy Graham

Curt Timothy Graham 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).

  • System for manually ground driving trenchers and other ground engaging machinery
    Publication number: 20030182823
    Abstract: A manual drive system is shown for moving trenchers and other small ground engaging equipment while in operation. A preferred embodiment of the system includes a pedal providing the mechanical advantage needed for an operator to apply sufficient thrust for such operations and a cleat for engaging the ground to provide the motive force in one instance or a ratchet engaging a transport wheel in another instance.
    Type: Application
    Filed: March 28, 2002
    Publication date: October 2, 2003
    Inventors: Ted Jay Sanders, Lee Allen Roose, Curt Timothy Graham