ZEDEL

A pulley includes a securing head and a first flange. A first shaft extends from the first flange. A sheave is mounted rotatable around the first shaft in one direction of rotation only. A cam is mounted able to move away from or towards the sheave. A spring is fitted to exert a force moving the cam towards the sheave. A handle is mounted on the first flange to move the cam between the first and second positions.

The fixing buckle includes first and second securing parts provided with coupling elements one of which defines a hook. A closure system is configured to define a first position preventing extraction of the first coupling elements from the second coupling elements and a second position allowing insertion and extraction of the first coupling elements. The closure system includes first and second closure plates each having a first position obstructing the hook and a second position configured to remove the first coupling elements. The first position of the first closure plate is configured to prevent movement of the second closure plate from its first position to its second position. The second closure plate separates the first coupling elements and the first closure plate along an extraction channel defined by the hook.

The pulley comprises a securing head and a first flange. A first shaft extends from the first flange. A second flange and a sheave are mounted rotatable around the first shaft with respect to the first flange. A rod is fixed to the first flange and mounted movable between a first position and a second position with a first movement. In the first position, the rod engages with the second flange to keep the second flange in the first position. In the second position, the rod allows rotation of the second flange. A blanking plate is fixed on the second flange and mounted movable between a first position and a second position with a second movement different from the first movement. The blanking plate partially covers the rod to prevent movement of the rod from the first position to the second position.

The tandem pulley comprises a pair of sheaves mounted in line between first and second flanges. A gate is fitted rotating with respect to the first flange between closed and open positions. The gate comes into contact with the second flange in the closed position to close a housing. The clamp is movable in rotation on the gate between a locking position locking the gate in the closed position and an unlocking position. The clamp has a prong pressing on the first flange and the gate in the locking position. The clamp has an actuating area separated from the first flange by the gate. Rotation of the actuating area from the locking position to the unlocking position corresponds to a movement of the actuating area away from the second flange. Rotation of the actuating area results in pivoting of the prong.