Patent ID: 7441621

Claim:
A member ( 1 ) for fixing a device for driving a bicycle wheel by friction, comprising a fastener ( 7 ) connected to an element of the bicycle frame, the friction drive device ( 3 ) being arranged so as to be able to pivot freely about a first pivot pin ( 4 ), characterised in that the fixing member also comprises a first part ( 2 ), to which the drive device is connected so as to be able to pivot freely about the said first pivot pin ( 4 ), a second part ( 5 ), which is connected to the first part ( 2 ) so as to allow mutual pivoting between the first part ( 2 ) and the second part ( 5 ) about a second pivot pin ( 6 ) before clamping and keeping them integral with each other, and the second part ( 5 ) comprises the said fastener ( 7 ), at a distance from the said second pivot pin, adjustment means ( 17 - 19 : 26 - 27 ) capable of detachably fixing the first part ( 2 ) with respect to the second part ( 5 ) in an angular position adjustable by the said mutual pivoting so that after the adjustment the first part ( 2 ) is fixed with respect to the second part ( 5 ), and means ( 22 - 25 ) of modifying the separation between the first pivot pin ( 4 ) and the second pivot pin ( 6 ), and therefore adjusting the length between the fastener and the drive device so as to place the drive wheel on the bicycle tyre according to the bicycle configuration.