Westinghouse Electric Corporation

John P Majcher

James O Rexroad

Jere L McKee

Albert R Cellerini

Donald E Schlosser

William E Smith

A circuit breaker characterized by a movable contact carrying arm movable about a pivot and a helical torsion spring movable on the arm to and from the pivot for applying a varying force as the arm moves from closed to open positions.

Circuit breaker contact arm with variable force pivot

A drawout switchgear with blow-out prevention means characterized by a circuit breaker movable into and out of a cell, and detachable blockage means for holding the circuit breaker in place.

Drawout switchgear with blow-out prevention device

Drawout switchgear characterized by a circuit interrupter unit movable into and out of a cell between disconnected and connected positions of separable terminals supported in the cell and on said unit, a levering-on mechanism for moving said unit between disconnected and connected positions of the terminals, the levering-in mechanism comprising a pair of cams on a cam shaft which shaft comprises telescoping shaft segments to facilitate assembly of the operating mechanism.

Drawout switchgear with telescoping cam shaft

A contact structure characterized by a plurality of pairs of oppositely disposed contact fingers for engaging a terminal stab, biasing means comprising leaf springs at the outer sides of the contact fingers, and bracket means for holding the assembly of the contact finger and biasing means together.

Contact structure for drawout switchgear

A circuit breaker characterized by a stored energy mechanism and an improved resettable latch means which latch means include an adjustable thermal trip unit.

Growing community of inventors

Chippewa Township, Beaver County, PA, United States of America

John P Majcher