Patent ID: 7218192

Claim:
A circuit breaker comprising: a line conductor; a load conductor; a fixed contact being electrically conductively disposed on one of said line and load conductors; a movable contact; an operating mechanism comprising a movable arm, said movable contact being electrically conductively disposed on said movable arm; a lockable fastener, comprising: a first member including a treaded cavity formed therein, a side having opening therein, and a passageway between said side at said opening and a surface proximate said threaded cavity; a second member including a threaded shank, at least a portion of the threaded shank being threadably received in the threaded cavity of said first member, in order to axially align said first member and said second member; wherein said first member and said second member are locked by deformation of the surface of said first member to prevent loosening of said first and second members; wherein said movable arm is electrically conductively connected with and movably mounted to the other of said line and load conductors with said lockable fastener; and wherein said operating mechanism further comprises a cam carrier including a first side having an opening and a second side having an opening; wherein said first member passes through the opening of said first side; and wherein said second member passes through the opening of said second side.