GAS-HYDRAULIC CYLINDER Russian patent published in 1997 - IPC

FIELD: pneumohydraulic drives; power cylinders. SUBSTANCE: floating piston in rod space of device is not provided. Check valves are installed in supply lines of hydraulic spaces. Gas-hydraulic cylinder has additional cylinder with hydraulic and gas spaces divided by floating piston. Hydraulic space of additional cylinder is connected with rod space, and gas space is connected with piston gas space of main cylinder whose maximum volume exceeds entire volume of additional cylinder. Overflow valves are installed on drain lines from piston hydraulic and rod spaces of main cylinder in parallel with check valve. Floating piston in piston space of main cylinder has one-side cavity pointed in direction of gas space. EFFECT: enlarged operating capabilities. 2 cl, 1 dwg