Patent ID: 9518569
Filing Date: 2016-12-13
CPC Classification: F04B

Claim Text:
1. An adjustment device for an adjustable pivoting cradle of a hydraulic machine, the adjustment device comprising: an actuating piston to which pressure medium is applied via an actuating pressure space to pivot the pivoting cradle about a pivoting axis; and a control valve configured to control a feeding of the pressure medium to the actuating pressure space and a relieving of the pressure medium from the actuating pressure space, the control valve having a control piston configured to be controlled by an electric actuator, wherein an actual value of a controlled variable is fed back electrically to a control device to control the electric actuator, and wherein the control piston and the actuating piston are mechanically decoupled, such that the control piston is independently movable relative to the actuating piston by the electric actuator.