Patents by Inventor George F. Charette

George F. Charette 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).

  • Patent number: 4292585
    Abstract: A three wire leakage current testing circuit for determining the operational performance of ground fault circuit interrupter devices has parallel tripping leads connected to the output of a potentiometer adjustable to line voltage. One lead includes resistors, a potentiometer adjustable within a selected milliampere range and a milliammeter. The other lead has a timer the readout of which is digital and in terms of milliseconds. The leads are switch controlled so that one lead may be closed independently of the other or both leads may be closed simultaneously. The testing circuit may be plugged into or connected to an energized ground fault interrupter receptacle or circuit breaker and it includes switch controlled leads in which an external ground fault circuit interrupter device may be incorporated, the testing circuit then plugged into a conventional three wire outlet.
    Type: Grant
    Filed: January 17, 1979
    Date of Patent: September 29, 1981
    Inventor: George F. Charette