Patent ID: 7275373
Filing Date: 2007-10-02
Classification: F15B

Abstract:
1. A reciprocating piston device for the closure of a vessel and consisting of at least one base element and one closure element, said system encompassing at least one movable piston ( 1 ) each of the at least one movable pistons with one hydraulic cylinder ( 7 ), and at least one movable intensifier piston ( 2 ) each of the at least one intensifier pistons with one intensifier cylinder ( 8 ), all of which are rotationally symmetrical, each hydraulic piston ( 1 ) and its hydraulic cylinder ( 7 ) and each intensifier piston ( 2 ) and its intensifier cylinder ( 8 ) being arranged along an axis of rotation, each hydraulic piston ( 1 ) featuring on the piston end located in the hydraulic cylinder ( 7 ) at least one circumferential reinforcement running radially on its outer surface, with an internal space between the hydraulic cylinder ( 7 ) and the hydraulic piston ( 1 ) divided into not less than two subsidiary spaces ( 3 and 5 ) not less than one bore ( 10 and 11 ) in each hydraulic cylinder ( 7 ) leading to each of these subsidiary spaces, the cylinder ( 1 ) being driven water-hydraulically and the intensifier piston ( 2 ) pneumatically, wherein the hydraulic piston ( the upper face of hydraulic piston ( the closure part essentially moves along the axis of rotation in relation to the hydraulic piston ( at least one sliding surfaces ( the reciprocating piston system is open with regard to the feed and discharge of the operating fluid.