Patent ID: 8357072

Claim:
A direct drive transmission system comprising a drive shaft ( 15 ) adapted to be coupled via a coupling ( 25 ) at its inner end to a motor shaft ( 12 ), a friction element ( 22 ) which rotates with the rotation of the drive shaft and which can be actuated longitudinally, during rotation, on the primary axis of said drive shaft, characterized in that the system further comprises, a roll bearing ( 20 ) comprising at least an inner ring ( 31 ) and an outer ring ( 32 ), said roll bearing being fixedly attached around at least part of the periphery of its inner ring ( 31 ) to an end of said friction element ( 22 ) and where said inner ring ( 31 ) has an inner diameter that is larger than the outer diameter of said drive shaft ( 15 ), a stopper ( 21 ) which is fixedly attached to the outer ring ( 32 ) of said roll bearing ( 20 ), said stopper being adapted to affix a wire ( 26 ), which when pulled, moves longitudinally said friction element ( 22 ) towards the inner end of said drive shaft ( 15 ) so as to allow engagement of said friction element onto a traction surface ( 16 ) of a drive wheel ( 14 ).