Patent ID: 6015957
Filing Date: 2000-01-18
Classification: H01H

Abstract:
A movable contact arm assembly for air circuit breakers comprising:an electrically-conductive support having at least one slot formed therein, the at least one slot being defined in part by first and second walls;a movable contact arm having first and second sides, a first end and an opposite second end, the first end being received within the at least one slot, and wherein the movable contact arm includes a movable contact attached to the second end;a spring washer disposed on the first side of the movable contact arm proximate the first end thereof so that the spring washer loads the second side of the movable contact arm against the second wall of the electrically-conductive support to form a conducting joint; and wherein the spring washer pivotally engages the first wall of the electrically-conductive support to provide a variable pivot point.