Patent ID: 6400244
Filing Date: 2002-06-04
Classification: H01H

Abstract:
Control apparatus for controlling electrical switchgear, comprising:a control shaft that is rotated clockwise or counter-clockwise in order to effect the controlling of the electrical switchgear; a drive shaft rotated by a drive mechanism that is one of electrically and manually controlled, said drive shaft disposed parallel to said control shaft; a Maltese cross having a plurality of arms radially extending from its center and provided with two drive slots disposed substantially at right angles to each other on ones of said plurality of arms, said Maltese cross being secured to said control shaft so that said arms rotate with said control shaft, said Maltese cross being rotated from a first determined angular position to a second angular position that is one of two other determined angular positions, said Maltese cross being rotated in this way by abutment of one or the other of two studs fixed to said drive shaft; a fixed stop abutment disposed in the vicinity of said drive shaft and operative to stop the rotation of said drive shaft in each of the clockwise and counter-clockwise rotation directions at starting and finishing rotation positions of said drive shaft; and a shaft-stopping mechanism that is one of electrically and manually controlled and operative to prevent the control and drive shafts from rotating in each of the clockwise and counter-clockwise rotation directions after said control shaft reaches a determined intermediate position between said first and second angular positions when said rotating has not been authorized, by interposing a stop element in a rotation path followed by a projecting element carried by one of the control and drive shafts as said one shaft rotates.