Circuit breaker with stored energy toggle-lock structure
AssigneeWestinghouse Electric Corp.
InventorsWalter V. Bratkowski, John A. Wafer, James P. Ellsworth
Life of this patent
Estimating the term…
Abstract
A circuit breaker characterized by a toggle lock means for holding toggle springs in a charged condition ready for closing a circuit through the circuit breaker contacts when necessary.
Claims6
A circuit breaker comprising a housing, a circuit breaker structure in the housing and having contact means operable to open and close an electric circuit, the structure also having an operating lever and a releasable trip member, a pair of toggle links connected between the contact means and the releasable trip member, a pivot pin connecting the links together, toggle spring means extending between the pivot pin and the operating lever, the operating lever being movable to charge the toggle spring means, a toggle lock lever releasably locking the pivot pin whereby the contact means are partially closed, unlock means for unlocking the toggle lock lever to enable the contact means to close, and latch means for latching the releasable trip member in position to discharge the toggle spring means and open the circuit.
Dependencies are inferred from the claim text.