Patents by Inventor Robert Nestor

Robert Nestor 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).

  • Cable bolt head
    Patent number: 5829922
    Abstract: A plurality of designs for mine roof bolts is disclosed. Each mine roof bolt includes a flexible multi-strand cable having a first and second end with a drivehead formed on the first end, the drivehead having a plurality of driving faces on an exterior surface thereof. The drivehead is a separate member. A barrel and wedge assembly is attached to the cable wherein the drivehead is utilized substantially for rotating the cable.
    Type: Grant
    Filed: May 23, 1996
    Date of Patent: November 3, 1998
    Assignee: Jenmar Corporation
    Inventors: Frank Calandra, Jr., Eugene H. Stewart, Stanley Ponce, John G. Oldsen, John C. Stankus, Brian R. Castle, Robert Nestor