The use of pneumatic actuator cylinder piston and crank conversion structure, output torque, small size fine.

The utility model provides a pneumatic conveying device, which includes a cylinder body, a piston rod, a piston seal, air storage Chambers on two sides, a reverser, and each inside passage.

In this article it is shown that the position of a piston in the pneumatic Cylinder can be controlled by using modulated pulses.