Patent ID: 7992459

Claim:
A shifting claw transmission ( 19 ) for a motor vehicle, comprising a main shaft ( 29 ) and a counter shaft ( 22 ), an electric motor (M) operatively connected to the countershaft ( 22 ), said countershaft ( 22 ) being fitted with countershaft gearwheels ( 20 b , 21 b , 23 , 24 , 25 ) which mesh with main shaft gearwheels ( 20 c , 21 c , 26 , 27 , 28 ) of the main shaft ( 29 ), said gearwheels ( 20 b , 21 b , 23 , 24 , 25 , 20 c , 21 c , 26 , 27 , 28 ) being one of fixed gear wheels and freely rotating gear wheels, the freely rotating gear wheels being provided with shifting claw structures for coupling them in a rotationally fixed fashion to the respective shaft ( 22 or 29 ) on which the respective freely rotating gear wheels are disposed, and control means ( 49 ) for controlling operation of the electric motor (M) for rotating the countershaft ( 22 ) so as to establish relative movement between the countershaft ( 22 ) and a gear wheel to be engaged in order to avoid a tooth-on-tooth position of the shifting claws which would prevent engagement of the respective shifting claw structure.