Importance

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Abstract

The self-blocking descender-belay device (1) according to the invention comprises:

a first lateral guide flange (6) for the rope, comprising a braking nose (4e),a second lateral guide flange (7) for the rope, which is separated from the first flange (6) by a transverse gap (8) for passage of the rope, and can be displaced between a spaced position for putting into place and removal of a rope, and a closed position in which the rope is trapped in the transverse gap (8) for passage of the rope,a cam (4d) which is engaged between the first and second flanges (6, 7) and is mobile towards and away from the braking nose (4e), and is thrust towards the braking nose (4e) by a cam return spring,the transverse gap (8) for passage of the rope extending between a rope input in the vicinity of the braking nose (4e), and a rope output opposite,the rope output having a large opening such as to permit free orientation of the rope output end between a blocking orientation in which the rope surrounds the cam (4d), and a release orientation in which the rope passes through the transverse gap (8) for passage of the rope directly, and without thrusting the cam (4d) towards the braking nose (4e).

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First Claim