DOUBLE ACTION CYLINDER (VERSIONS) Russian patent published in 2016 - IPC F04B39/12 F04B53/16 

FIELD: machine building.

SUBSTANCE: double action cylinder under first version contains casing 1, in which the connected gland cavity, work cavity 12 and valve holes 13, 14 are made. On the surface of the work cavity 12 the seating surface 20 for sleeve is made, and in the work cavity 12 the sleeve 2 is installed. On the surface of the work cavity 12 sections 19, 21 are made for output of some part of the piston beyond the sleeve, between them the seating surface 20 for sleeve is made. The first section for output of the piston part beyond the sleeve is arranged at side of gland cavity. Diameter of the first section 19 is below the diameter of the seating surface 20 for sleeve. Diameter of the second section 21 is equal to the diameter of the seating surface (20) for sleeve. The double action cylinder under the option 2 differs from the first option. The diameter of the second section 21 for output of the piston part beyond the sleeve exceeds the diameter of the seating surface 20 for the sleeve.

EFFECT: simplified design and increased reliability of the sleeve, simplified sleeve installation in the cylinder.

3 cl, 10 dwg