Patents by Inventor William Diehl

William Diehl 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).

  • Shell feed system for a cold pilger mill
    Patent number: 4037444
    Abstract: A system for incremently and continuously feeding tubes between dies during a prescribed angle of rotation of a crank assembly in a cold pilger mill. As a main motor drives the crank assembly, a servo-motor, receiving a signal from a digital control unit, which receives a signal from a pulsating encoder associated with the main drive, operates to incremently advance a carriage and shell a controlled predetermined distance between the dies. A reversal of the servo-motor returns the carriage to the initial position in preparation to advance another shell.
    Type: Grant
    Filed: January 10, 1977
    Date of Patent: July 26, 1977
    Assignee: Wean United, Inc.
    Inventors: Harry Calhoon Ledebur, Floyd William Diehl, Jr.