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US 5,317,295 AGranted
Molded case circuit breaker trip-to-test button
AssigneeGeneral Electric Company
InventorsDavid A. Ferullo, Roger J. Morgan, James L. Rosen
Life of this patent
Estimating the term…
Abstract
An electronic trip molded case circuit breaker includes components that are designed for high speed robotic assembly. A unitary trip-to-test button is down-loaded within the circuit breaker housing for automatic alignment with the circuit breaker operating mechanism during the circuit breaker assembly process. The trip-to-test button includes an exhaust gas barrier along with a roller actuator for interacting with the circuit breaker operating mechanism during a test function.
Claims9
A circuit breaker comprising:
- a plastic circuit breaker case and a plastic circuit breaker cover;
- a pair of contacts within said circuit breaker case arranged for automatic separation by means of an operating mechanism;
- an operating handle extending through said circuit breaker cover for manually turning said contacts between open and closed conditions;
- a trip unit within said circuit breaker cover determining overcurrent conditions through a protected circuit and activating said operating mechanism to separate said contacts and interrupt circuit current;
- and
- a trip button arranged within said circuit breaker cover and extending within said circuit breaker case, said trip button including a top piece formed of an electrically-insulative material and having one end externally accessible from said circuit breaker cover and an opposite end extending within said circuit breaker cover, said trip bottom also including a bottom piece open at a top end and at a bottom end thereof, said top end receiving said opposite end of said of said top piece and said bottom end supporting a roller member to contact a trip bar associated with said operating mechanism and thereby articulate said operating mechanism for test purposes.
3 more elements
Dependencies are inferred from the claim text.