Patent ID: 8061231

Claim:
A transmission shift device ( 30 ) for a transmission ( 6 ), the transmission shift device ( 30 ) comprising: a range group transmission ( 14 ); a shift lever ( 16 ) with a superimposed H-shaped shift pattern ( 28 ); a shift and selector shaft ( 32 ) being operatively connected at a first end ( 34 ) to the shift lever ( 16 ) and, at a second end, to a shift mechanism; a pressure actuated blocking device for one of detecting and preventing unintended activation of transmission gears during a range group change; the shift and selector shaft ( 32 ), during the range group change, being independently displaced from a first shift gate (G 5 -G 6 ) to a second shift gate (G 3 -G 4 ) of a next two lower gears (G 3 , G 4 ); the shift and selector shaft ( 32 ) being displaceable from the first shift gate (G 5 -G 6 ) with a force (F 1 to F 2 ) which changes, via a regulated distance, to the second shift gate (G 3 -G 4 ) of the next two lower gears (G 3 , G 4 ); and the changeable force (F 1 to F 2 ) upon the shift and selector shaft ( 32 ) comprises a static basic force (F K ), produced by a piston-cylinder arrangement ( 48 , 50 ) and changed by a lever system with regard to a magnitude and an operative direction, is transmitted to the shift and selector shaft ( 32 ).