Patents by Inventor Samuel A. Gray

Samuel A. Gray 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).

  • Arc prevention and detection electrical discharge machine servo control system
    Patent number: 4338504
    Abstract: A method and apparatus for controlling a servo system for removing an electrical discharge machining system electrode from the vicinity of a workpiece for preventing arcing or short circuit conditions, by sensing radio frequency energy created by the resonance's in the EDM system and generating a withdrawal signal in response to the absence or to a predetermined low level or radio frequency energy, which withdrawal signal causes the electrode to rapidly withdraw, and dampening this withdrawal signal to cause the electrode to slowly return to the working distance from the workpiece.
    Type: Grant
    Filed: August 28, 1979
    Date of Patent: July 6, 1982
    Assignee: Pacific Controls Incorporated
    Inventor: Samuel A. Gray