Patent ID: 8225905

Claim:
An ascender device for belaying on a fixed rope, comprising: a body with a trough for the rope to pass through, an actuating lever having a pivot, a cam for clamping the rope, and a hole for attaching a safety means, a connecting part arranged between the pivot and the body to move the actuating lever between an inactive position in which the rope is inserted in the trough and an active position in which the ends of the pivot are housed in aligned recesses of the body acting as bearings, a lock to perform securing of the pivot in the recesses in said active position or to allow it to escape when moving to the inactive position of said actuating lever, wherein the lock is a double lock comprising a first lock and a second lock to secure the two opposite ends of the pivot in the recesses, each lock being associated with an unlocking tab to unlock the latter, the connecting part is formed by a rigid connecting arm articulated on the pivot and body, and the first lock is mounted pivoting on a first pin that passes through a button-hole of the connecting arm.