Patent ID: 7251936
Filing Date: 2007-08-07
Classification: B60G,F15B,F16F

Abstract:
1. A suspension device, comprising: at least one working cylinder having a piston space and a rod space; at least one hydraulic accumulator; a first valve unit connecting said working cylinder and said hydraulic accumulator in fluid communication, having an input connected in fluid communication to said piston space and having an output connected in fluid communication to said hydraulic accumulator; a second valve unit connecting said working cylinder to a tank connection in fluid communication, having an input connected in fluid communication to said rod space and having an output connected in fluid communication to said tank connection; and a pressure compensator actuatable to equalize fluid pressure between said working cylinder and said hydraulic accumulator and to produce a common pressure level, said compensator having first and second control inputs connected in fluid communication with said input and said output of said first valve unit, respectively, said first control input being connected in fluid communication to said input of said first valve unit through a choke.