Patent ID: 7201245

Claim:
A controller for a hydrostatic traversing mechanism with at least one hydraulic pump, which is connected via a first and a second main duct to a first hydraulic motor unit which drives a front axle and a second hydraulic motor unit which drives a rear axle, an absorption volume of the first and the second hydraulic motor unit being adjustable via a first and a second variation device respectively, and a direction of motion being specified as a forward motion (F) or backward motion (R) by a position of driving lever, wherein the first and second variation device are controlled by a control valve, the control valve taking a first switch position in the case of forward motion (F) being defined by the position of the driving lever and a second switch position in the case of backward motion (R) being defined by the position of the driving lever, in the first switch position the first variation device being controlled so that the first hydraulic motor unit is adjusted in the direction of a smaller absorption volume, and in the second position the second variation device being controlled so that the second hydraulic motor unit is adjusted in the direction of a smaller absorption volume.