Patents by Inventor Donald J. Barchok

Donald J. Barchok 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).

  • Over voltage protection circuit
    Patent number: 3931548
    Abstract: An over voltage protection circuit for preventing excessive high voltages which exceed the X-ray isodose limits for human beings when the high voltage primary winding, the tuning coil, or the high voltage primary driving winding opens. The B+ voltage for the driving oscillator or horizontal driver is derived at a point in the circuit such that when circuit elements fail, the B+ voltage is removed thus turning off the drive to the high voltage circuit.
    Type: Grant
    Filed: April 26, 1974
    Date of Patent: January 6, 1976
    Assignee: Admiral Corporation
    Inventor: Donald J. Barchok