Patent ID: 8302879

Claim:
A rail expansion device ( 10 ) with stock rail and tongue rail ( 12 , 20 , 21 , 22 ), which are longitudinally movable and are in contact under an application of force acting transversely relative to a longitudinal direction of the rail, characterized in that the tongue rail ( 20 , 21 , 22 ), at some distance from the tongue rail section that is in contact with the stock rail ( 12 , 14 ), is detachably accommodated by a holding device ( 24 ), and that the tongue rail in the holding device is connected form-fittingly and force-fittingly to a control rail ( 16 , 18 ) merging into the holding device, or to a section of the control rail, or to a section of the holding device ( 24 ) with a profile that merges into the control rail.