Patents by Inventor Theodore M. Willgrubs

Theodore M. Willgrubs 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).

  • Dipper door actuated lube pumping system
    Patent number: 5839213
    Abstract: A mining shovel (10) is provided with an automatic lubricant system controlled by movement of a portion for the mining shovel (10). The automatic lubrication system includes an actuator (51, 151, 251, 351) and a lubrication supply subsystem (53, 153, 253, 353). The lubrication supply subsystem (53, 153, 253, 353) delivers lubricant to a selected site in response to movement of the actuator (51, 151, 251, 351).
    Type: Grant
    Filed: July 1, 1996
    Date of Patent: November 24, 1998
    Assignee: GPX Corp.
    Inventors: Ronald E. Abbott, Theodore M. Willgrubs