Patent ID: 7155328

Claim:
A device for determining gearbox positions in an automatic gearbox comprising: a notched disk arranged on a selector-range shaft, said notched disk mapping the position of a selector lever by means of a gate track consisting of elevations and depressions, wherein said notched disk has a first end position and a second end position and at least one intermediate position wherein a rotation beyond the first and second end position is prohibited, a pretensioned roller fixing the gearbox position, an adjustment device for rotating the notched disk about an axis of rotation of the selector-range shaft, a first sensor for determining the torque applicable by the adjustment device for rotating the notched disk when the adjustment device rotates the notched disk, a second sensor for determining the position of the notched disk, and a regulating device for detecting the gearbox positions of the automatic gearbox based on the values determined by the first and second sensors.