Patent ID: 8173927
Filing Date: 2012-05-08
Classification: H01H

Abstract:
1. A control mechanism for a high or medium voltage switch apparatus that comprises at least two interrupters, each of which has a pair of contacts that consist of a stationary contact and a contact movable in straight line motion for separation of the contacts from each other in a switching operation, wherein the control mechanism comprises: common actuator means for actuating the movable contacts and arranged to permit closing of one of the interrupters while keeping the other interrupter open and vice versa, the common actuator means comprising: two pairs of levers hinged together, one of the levers of a given pair being a fixed-end lever in that it has one end hinged at a fixed point and another end hinged to the other lever of said given pair, said other lever being hinged to one of the movable contacts, with a spigot being disposed between said two ends of each fixed end lever, said spigot being engaged in one of the cam grooves so as to constitute a follower; the geometry, length, and disposition of said two pairs of levers of the mechanism, and the profiles of the cam grooves, affording a ratio between the disk cam or cams and each associated movable contact compared to a direct link between said disk cam or cams and said each associated movable contact.