Patent ID: 6564547
Filing Date: 2003-05-20
Classification: F01L,F02B,F15B

Abstract:
A system comprising a hydraulic reservoir and a hydraulic machine, said hydraulic reservoir and said hydraulic machine being connected with each other by means of a fluid connection line, and a switching device used for intermittent flow regulation between said hydraulic reservoir and said hydraulic machine, said switching device being arranged in the connection line, wherein said switching device comprises a first valve and a second valve, said first and said second valve being two position valves, said first valve being operable to be switched between a first position in which the first valve is closed and a second position in which it is open, and said second valve being operable after the first valve has been operated, to be switched between a first position in which the second valve is opened and a second position in which it is closed, said connection line being open when both said first and said second valve are in their open positions.