Patents by Inventor Edward Rifkin

Edward Rifkin 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).

  • Solid state overcurrent protection system for circuit breakers
    Patent number: 5204797
    Abstract: A device for detecting a primary fault current at a three phase current system and converting the detected fault current into mechanical action for breaking the circuit includes circuitry for breaking the circuit in response to a selected secondary current substantially instantaneously rising to a predetermined level and a device for adjusting the predetermined level.
    Type: Grant
    Filed: April 25, 1991
    Date of Patent: April 20, 1993
    Assignee: SPD Technologies, Inc.
    Inventors: Edward R. O'Brien, III, Edward Rifkin