HOLLOW HYDRAULIC CYLINDER Russian patent published in 2016 - IPC F15B15/14 F15B15/20 

FIELD: engines.

SUBSTANCE: hydraulic cylinder relates to displacement hydraulic motors designed for working fluid flow energy conversion into mechanical energy output link moving reciprocally. Hydraulic cylinder comprises body with fasteners consisting of front and rear end covers, equipped with seals and fasteners on body, hollow rod with fasteners and, mounted thereto, a hollow piston with seals, body is made in form of two hollow cylinders, coaxially inserted into each other to form a circular cavity in between and interconnected by front and rear hollow end covers, hollow rod with hollow piston is inserted into hollow annular space between cylinders of body, front cover is detachable, consisting of two end washers, end surface of hollow piston on side of rear end cover is made in form of stepped tooth crowns, fluid feed hole in piston cavity is directed at radially located tooth surface, and its longitudinal axis is tangent to axis of annular cavity.

EFFECT: technical result is high reliability of hydraulic cylinder.

1 cl, 3 dwg