Patents by Inventor Thomas J. Feltman

Thomas J. Feltman 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).

  • Freefall winch system and method of operation
    Patent number: 4398698
    Abstract: One or more freefall systems for a crane or the like is disclosed, which system includes a protective circuit that includes three separate switches that must be closed before the winch can be placed in its freefall mode. A mode switch in the cab must first be closed, a brake pedal must be depressed to close a second switch, and a third switch must be held closed by the operator during freefall.
    Type: Grant
    Filed: May 29, 1981
    Date of Patent: August 16, 1983
    Assignee: FMC Corporation
    Inventors: Steven C. Crawford, Thomas J. Feltman, Roger A. Steuck