Patent ID: 7280018
Filing Date: 2007-10-09
Classification: H01H

Abstract:
1. A circuit breaker comprising: a base; a cover, with at least one of said base and said cover being a molded member including a first end wall, a second end wall, a pair of side walls, and an opening between said side walls; a strengthening member engaging said at least one of said base and said cover between said side walls at said opening, said strengthening member engaging at least one of said side walls and being an internal wall of said molded member, with said at least one of said base and said cover being made of a first material, and with said strengthening member being made of a second dissimilar material, which has greater strength than said first material; separable contacts; an operating mechanism coupled to said separable contacts, said operating mechanism being structured to move said separable contacts between an open position and a closed position; a trip mechanism coupled to said operating mechanism, said trip mechanism being structured to actuate said operating mechanism to open said separable contacts; and wherein said opening includes at least one dovetailed recess; and wherein said strengthening member includes at least one dovetailed protrusion, which engages said at least one of said base and said cover at said at least one dovetailed recess.