MAIN HYDRAULIC CYLINDER Russian patent published in 2010 - IPC B60T11/16 B60T11/28 

FIELD: transport.

SUBSTANCE: invention relates to automotive industry, namely to main hydraulic cylinders of hydraulic systems. Proposed cylinder comprises casing, two pistons fitted in casing central bore to slide therein, two piston backstroke limiters fitted in cylinder central bore and crosswise bores, two valves fitted in piston axial bores to have their guide part end faces coming in contact with piston backstroke limiters. Valves incorporate sealing sleeves and springs arranged in their front section. Guide section of every valve has through radial bores coming out into guide space, namely, to guide inner surface that makes said space and has cylindrical section. Said bores come out on inner surface of said section nearby sealing sleeve. Valve guide section inner surface has cylindrical part and additional widened section with its outer edge coming onto valve guide section rear end face. There is a recess made on one of sections whereat valve through radial bores come onto guide part outer surface.

EFFECT: higher operating performances, stability of hydraulic characteristics and reliability.

8 cl, 6 dwg