Patents by Inventor Bruce N. Hershock

Bruce N. Hershock 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).

  • Pusher block for rotary forging machines and method of using same
    Patent number: 4321813
    Abstract: A conventional rotary forging machine (M) includes a chuck (C) for gripping a workpiece (W) for moving it axially and for rotating the workpiece during the upset forging operation. The chuck may tend to deform the workpiece and relative axial and rotational movement may occur between the workpiece and chuck, thus requiring a prolonged cycle time for the operation. This invention overcomes the above problems by providing a pusher block (10) having grippers (17) thereon for engaging an end of the workpiece to push it through a pair of forging dies (D) and for simultaneously gripping and rotating the workpiece to prevent relative rotation therebetween. In carrying forth the method of this invention, the pusher block engages an annular (W') of the workpiece.
    Type: Grant
    Filed: January 7, 1980
    Date of Patent: March 30, 1982
    Assignee: Caterpillar Tractor Co.
    Inventor: Bruce N. Hershock