Electric circuit breaker comprising a plurality of vacuum interrupters simultaneously operated by a common operator

An electric circuit breaker comprising:

• (a) a plurality of vacuum-type circuit interrupters, each comprising a first contact, a second contact movable into and out of engagement with said first contact, and a movable contact rod on which said second contact is mounted extending between the interior and the exterior of said interrupter,
• (b) an operating device at substantially ground potential for said interrupters comprising a substantially linearly-movable operating member movable during a circuit-breaker opening stroke along substantially a predetermined reference axis,
• (c) means for mounting said interrupters at one side of said operating member with their movable contact rods extending in a direction generally toward said operating member,
• (d) and means for mechanically coupling said operating member to said movable contact rods comprising a plurality of operating rods primarily of insulating material, each connected at one end to said operating member and at its opposite end to one of said movable contact rods, said operating rods being of substantially equal length and having longitudinal axes that converge and intersect at substantially a common point.