Power piston apparatus

Details Power piston apparatus Power piston apparatus

F - Mech Eng,Light,Heat,Weapons

15

B

138/69.1

F15B 21/00 (2006.01) F15B 11/22 (2006.01)

Patent

CA 1058058

ABSTRACT OF THE DISCLOSURE The present invention relates to a power piston apparatus, comprising two or more double acting hydraulic piston drive means in which the cross-sectional areas of the pistons are identical and the cylinder spaces or chambers of which are hydraulically interconnected in crossed fashion above and below the pistons in the case of two cylinders, while being connected in series in the case of more than two cylinders having separately closed oil spaces of identical volumes, with each such oil space being connected to a positive- pressure oil supply through check valves for replenishing the leakage oil, and wherein said piston drive means have associated therewith metering cylinders with a coaxial and/or parallel direction of stroke, i.e. with mechanical connections between the ends of the piston rods.

282652

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