Electricity: measuring and testing – Electromechanical switching device – Circuit breaker
Reexamination Certificate
2008-10-08
2010-11-30
Natalini, Jeff (Department: 2831)
Electricity: measuring and testing
Electromechanical switching device
Circuit breaker
C324S509000, C361S042000
Reexamination Certificate
active
07843197
ABSTRACT:
The present invention is directed to an electrical wiring device that includes an automatic self-test assembly coupled to the plurality of line terminals or the plurality of load terminals, the detection circuit, the fault detection circuit and the circuit interrupter assembly. The automatic self-test assembly is configured to cause the detection circuit to generate a simulated sensor fault signal during a predetermined half-cycle of an AC line cycle in accordance with a predetermined periodic testing schedule, monitor the fault detection signal corresponding to the simulated sensor fault signal, and generate a test result signal based on monitoring the fault detection signal. The automatic self-test assembly also includes a noise immunized decision circuit configured to evaluate a plurality of test results to thereby provide a noise immunized end-of-life signal. One of the conductive paths that connects the plurality of line terminals and the plurality of load terminals being interrupted in response to the noise immunized end-of-life signal.
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Finlay, Sr. David A.
Macbeth Bruce F.
Packard Thomas N.
Bond Schoeneck & King , PLLC
Malley Daniel P.
Natalini Jeff
Pass & Seymour, Inc.
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