Patent ID: 8079215
Filing Date: 2011-12-20
Classification: F15B

Abstract:
1. A system for uncoupling hydraulic plants comprising: a bidirectional pump; a hydraulic actuator, wherein the pump and the actuator are connected by a device that, only on a basis of measures on circulating fluid between the pump and the actuator, controls a motion of the actuator, causing the actuator to follow a movement of the pump; wherein the actuator and the pump are connected with a symmetrical hydraulic circuit, the symmetrical hydraulic circuit comprising a first branch and a second branch, wherein the first branch comprises, wherein the second branch comprises, a first cursor controlling flow of the first controlled flow valve and a second cursor controlling flow of the third controlled flow valve; a first and a second pistons providing the measure points in the first and respectively in the second branches; and a first and a second springs coupled to the first and the second pistons, the first and the second springs causing the first and the second pistons to move proportionally with a difference between the pressures in opposing chambers of the actuator and the pressures in the first and the second branches.