Patent ID: 7726666

Claim:
An actuator for a divided stabilizer of a motor vehicle, the actuator comprising: a switchable coupling unit with an outer rotating part connected to a stabilizer part in such a way that the outer rotating part and the stabilizer part rotate in unison, and with an inner rotating part connected to another stabilizer part in such a way that the inner rotating part and the another stabilizer part rotate in unison, and with a locking piston locking said outer rotating part and said inner rotating part in a locked position in such a way that said outer rotating part and said inner rotating part rotate in unison and unlocking said outer rotating part and said inner rotating part for a predetermined radial path of twisting in an opened position; and a hydraulic absorbing unit arranged on the axle of said switchable coupling unit, said absorbing unit being connected to said stabilizer part and to said another stabilizer part, said absorbing unit forming at least one pressure chamber and a suction chamber said absorbing unit assuming a blocked position in the locked position of said switchable coupling and said absorbing unit opposing the relative twisting motion between said two stabilizer parts at a hydraulic spring rate in the opened position of said switchable coupling.