A perfected cat for the command in displacement of a rotating axis. (Machine-translation by Google Translate, not legally binding)

摘要

A jack adapted for the displacement control of a rotating shaft in which said shaft is connected in movement to the piston of a jack in which it can rotate freely, while the aforementioned piston is immobilized in rotation when completely having the possibility of sliding by the action of a motor fluid. (Machine-translation by Google Translate, not legally binding)