DOUBLE-ACTING COMBINED HYDRAULIC CYLINDER Russian patent published in 2003 - IPC

FIELD: hydraulic cylinders designed for reciprocation of output member. SUBSTANCE: hydraulic cylinder has cylindrical body, two-sided rod with parts of different diameters, piston installed in body for reciprocation with contact with body internal surface. Body is made with bottom to which one part of said rod is fastened. Piston is installed for rod embracing and has cavity with necks for engagement with parts of piston parts of different diameters. Pistons length is not less than value of hydraulic cylinder stroke for sealed contact with rod external surface and body internal surface. EFFECT: simplified manufacture of device. 4 cl, 4 dwg