Patents by Inventor Theodore Brassard

Theodore Brassard 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).

  • Current inrush limiter
    Patent number: 3935511
    Abstract: Single or multi phase A.C. power is rectified to yield a D.C. voltage which is adapted to operate an electrical load. At "turn-on" a resistive device is inserted in series with the load until a voltage sensitive relay is energized to close its contacts or an SCR is energized to shunt the resistive device out of the circuit. The resistive device is preferably a PTC element. Several versions include circuitry for reinserting the PTC when the D.C. voltage drops excessively, an indication of impending current surge.
    Type: Grant
    Filed: December 26, 1973
    Date of Patent: January 27, 1976
    Assignee: Texas Instruments Incorporated
    Inventors: Henry J. Boulanger, Theodore Brassard