Patent ID: 6776080
Filing Date: 2004-08-17
Classification: F04B,F15B

Abstract:
A hydraulic pressure intensifier comprising a supply connection, a return connection, and a high-pressure connection,an intensifier piston assembly comprising a high-pressure cylinder and a high-pressure piston displaceable in the high-pressure cylinder, a low-pressure cylinder having a greater cross-section than the high-pressure cylinder and a low-pressure piston displaceable in the low-pressure cylinder, wherein the low-pressure piston is connected to the high-pressure piston and divides the low-pressure cylinder into a first low-pressure chamber on a side of the high-pressure piston and a second low-pressure chamber, a switching valve configured to act on the second low-pressure chamber with pressure from a pressure source or for relieving the second low-pressure chamber of pressure, wherein the switching valve comprises a valve element which in one direction of movement is subjected to a pressure in a first control pressure chamber having a pressure application area and in an opposite direction of movement is subjected to a pressure in a second control pressure chamber having a pressure application area which is larger than the pressure application area of the first control pressure chamber, wherein the low-pressure piston is configured to control pressure in the second control pressure chamber.