Patent ID: 7530434

Claim:
A hydraulic system for a suspension system, the hydraulic system comprising: a hydraulic cylinder; a conveying means that produces a filling pressure; a hydraulic tank; a control device connected to the conveying means and to the hydraulic tank; a first control pressure line that connects the control device to a first chamber of the hydraulic cylinder; a load holding device disposed in the first line, wherein the load holding device is switchable between a closed position in the direction of the control device to an open position; a first on-off valve is disposed in the first line between the load holding device and the control device, wherein the first on-off valve is switchable between an open position and a closed position in the direction of the control device; and a hydraulic accumulator connected to the first line wherein the hydraulic accumulator is connected to the first line between the load holding device and the first on-off valve, and the load holding device and the first on-off valve are controlled essentially synchronously independent of a filling pressure of the hydraulic cylinder.