Patent ID: 7424803
Filing Date: 2008-09-16
Classification: E02F,E21D,F15B

Abstract:
1. Method for increasing pressure in cylinders used for oil hydraulic, water hydraulic, or emulsion hydraulic systems as well as plasma or other fluid hydraulic systems, in which two part or multi-pan cylinders, which comprise a foundation and, arranged displaceably therein, a first piston with a first piston rod, are moved apart or together in a controlled fashion by means of valves and the pressure-transmitting medium which is introduced, having passed through a high pressure pump, with a specified pressure being generated and maintained in the piston surface cavity beneath the first piston, even after extension of the first piston, by means of compressing the piston surface cavity, wherein the cylinder, specifically its piston surface cavity, is initially fed a pressure-transmitting medium of a specified pressure level and the cylinder is hence moved apart, and wherein the pressure in the piston surface cavity beneath the first piston is increased by using the pressure-transmitting medium of a specified pressure level for compression of the pressure transducer in the piston surface cavity in that a different piston with an associated piston rod, which is displaceably arranged in the first piston rod, is inserted in the piston surface cavity with the help of the pressure-transmitting medium having a specified pressure level and the volume of the piston surface cavity is thereby reduced.