Patents by Inventor John R. McGregor

John R. McGregor 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).

  • Electronic depth controller for EDM apparatus
    Patent number: 4495394
    Abstract: An electronic depth controller is associated with EDM apparatus for controlling the depth of holes which are machined in workpieces by the EDM apparatus. The electronic depth controller comprises its own microprocessor which acts upon selectable input data from a control panel to provide signals relating to hole depth control to the main control system of the EDM apparatus. The electronic depth controller is selectively operable to one or the other or both of two operating modes. Data relating to each mode is input to the system via switches on the control panel.
    Type: Grant
    Filed: June 5, 1984
    Date of Patent: January 22, 1985
    Assignee: Raycon Corporation
    Inventors: John R. McGregor, Gary F. Rupert, Thomas M. Kennedy