Patent ID: 8348298

Claim:
A slider for a fifth wheel arranged on a tractor vehicle, comprising: a substructure with at least two guide rails oriented in a direction of travel, the substructure connected to the tractor vehicle, a displaceable slide which carries the fifth wheel and engages with the guide rails such that the slide carrying the fifth wheel is arranged on the tractor vehicle, and clamping shoes arranged oppositely on the slide, making possible a positive locking of the slide in the guide rails, as well as an actuating element, which moves the clamping shoes into a released position and a locking position, a motor-driven drive unit, with a hydraulic cylinder connected to a hydraulic circuit and a control valve, connected to an electronic control device, which controls the travel of the hydraulic cylinder, and wherein the electronic control device beside controlling the hydraulic circuit also takes on the control of the actuating element for activating said hydraulic cylinder and said actuating element without interaction of a driver during a driving situation.