Compressed air actuator device, comprising a watertight main cylinder in which are mounted, on both sides of a central thrust chamber, two pistons sliding in a leaktight manner opposite each other, joined by a joint to a rotating output shaft, and at least one recovery device comprising a compressed elastic member acting on one of the pistons by means of a pusher, characterized in that it comprises pneumatic means, in communication with the central thrust chamber, to compress the organ elastic when said chamber is under pressure. (Machine-translation by Google Translate, not legally binding)
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