Patent ID: 7075027

Claim:
A circuit interrupter comprising: first and second terminals; a vacuum housing comprising separable contacts including a stationary contact and a moveable contact, said first terminal being electrically connected to the stationary contact and said second terminal being electrically connected to the moveable contact; an operating mechanism comprising a drive rod, said operating mechanism being structured to move the drive rod in a general first direction to close the separable contacts, and to move the drive rod in a general opposite second direction to initiate opening of the separable contacts; and a mechanism assembly cooperating with the drive rod to open and close the separable contacts, said mechanism assembly comprising: a housing including a pair of first longitudinal openings and a pair of second longitudinal openings, said first longitudinal openings defining a first plane, said second longitudinal openings defining a different second plane, a first trunnion member pivotally and movably mounted with respect to the first longitudinal openings of said housing, said first trunnion member being coupled to said moveable contact, a second trunnion member pivotally and movably mounted with respect to the second longitudinal openings of said housing, said drive rod being pivotally connected to said second trunnion member, and at least one spring biased between said first trunnion member and said second trunnion member.