发明授权
US08039770B2 Movable contact arm and crossbar assembly and electrical switching apparatus employing the same 有权
可移动接触臂和横梁总成以及采用其的电气开关装置

Movable contact arm and crossbar assembly and electrical switching apparatus employing the same
摘要:
A movable arm assembly is for an electrical switching apparatus including a stationary contact and an operating mechanism. The arm assembly includes a biasing member and an arm member having a first end, an opposite second end, a pivot point therebetween, and a portion having a longitudinal axis. A movable contact is disposed at or about the first end. The arm member engages a crossbar member at or about the pivot point such that the arm member can pivot from a first position to a second position. The biasing member engages the arm member at a point between the pivot point and the second end and includes a portion that engages and biases against a housings of the crossbar member. The longitudinal axis of the portion of the arm member is oriented generally parallel to the portion of the biasing member when the arm member is at the first position.
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