Patent ID: 7777149

Claim:
An interrupting chamber for a high-voltage or medium-voltage circuit-breaker, said interrupting chamber extending longitudinally along an axis, and containing at least: first and second contacts mounted to move along the axis and moving in opposite directions relative to each other, between a closed position in which they are in mutual contact and an open position in which they are separated; and drive means making it possible to move the two contacts; connection means between each of the contacts and the drive means; in which: the drive means comprise a hollow cylinder mounted to move in rotation around the axis of the chamber; in its wall, the cylinder presents at least a first slot and a second slot, each of which has a portion inclined at an angle of opposite sign relative to the axis; the connection means of the first contact comprise a first slidably mounted element co-operating with said first slot, and the connection means of the second contact comprise a second slidably mounted element cooperating with said second slot; so that, when the cylinder moves in rotation around the axis, the first and second slidably mounted elements move in their respective slots in translation and in opposite directions along the axis of rotation of the cylinder.