| 摘要 |
he invention relates to a compressed air piston cylinder usable for tightening objects. The exit of the cylinder is assisted by compressed air pressure and its return by a spring. In conjunction to the rear metal cap, the single-action piston included into the cylinder reduces the wear and tear, augments the speed performance and enhances the durability of the last. The invention has extended use not restricted, as is usual, to tightening machines. |
