Patents by Inventor Richard G. Hamel

Richard G. Hamel 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: 4604674
    Abstract: A reclosing relay for reclosing a circuit breaker in an electrical power system. The reclosing relay is a multi-shot reclosing relay (i.e., providing more than one reclosure command to the circuit breaker) and includes primary and redundant lockout circuits for each reclose circuit. The primary lockout scheme employs a flip-flop, with a reset timer for resetting if the breaker remains closed after the first reclosure. The flip-flop is set when the circuit breaker recloses to lockout the first reclosure circuit. The redundant lockout circuit locks out the first reclosure circuit after a trip, reclose, and retrip sequence. The second reclose circuit includes similar primary and redundant lockout circuits.
    Type: Grant
    Filed: March 13, 1985
    Date of Patent: August 5, 1986
    Assignee: Westinghouse Electric Corp.
    Inventor: Richard G. Hamel