Zedel

Alexandre Bronnaz

Alain Maurice

Paul Petzl

Pierre-Olivier Chabod

The pulley device comprises first and second pulleys each provided with a set of sheaves. The two pulleys are designed to be respectively fixed to a fixed point and to a person to be rescued. A rope is fixed to one of the two pulleys and arranged in such a way that the first pulley moves towards the second pulley when a pull is exerted on the rope. An enclosure connects the first pulley to the second pulley and surrounds the path of the rope between the two pulleys. One end of the rope extends outwards from the enclosure to enable a pull to be exerted on the end of the rope.

Pulley device

An ascender device for a double rope is composed of two identical ascenders, the flanges of which are reversed by pivoting through 180&#xb0; with respect to one another along a vertical axis extending parallel to the two troughs. The two grips are symmetrical with respect to the vertical axis so as to be able to be held at the same time by the user's right hand and left hand.

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Bassens, France

Alexandre Bronnaz