Patent ID: 7341263

Claim:
A hydropneumatic suspension, comprising: at least one suspension cylinder; at least one hydraulic accumulator configured as a suspension accumulator; a pilot actuated valve for opening and blocking a fluid carrying connection extending between said suspension cylinder and said suspension accumulator, said pilot-actuated valve being movable between an open position and a blocked position and having first and second operating sides; and a hydraulic actuating assembly connected to and moving said pilot-actuated valve from the open position to the blocked position, and tapping fluid pressure at a tapping point between said suspension accumulator and said suspension cylinder, said actuating assembly including a switching valve connected by at a first pilot-actuated line to said first operating side of said pilot-actuated valve for conveying fluid pressure from said tapping point to said first operating side, a second pilot-actuated line extending between said switching valve and said second operating side, and a proportional valve being one of connected to and switched to one of said pilot-actuated lines between said switching valve and said pilot-actuated valve.