Patent ID: 9580144
Date: 2017-02-28
CPC Classifications: B62M

Claim:
1. A bicycle sprocket assembly, comprising: a plurality of sprockets of decreasing diameter configured to be mounted on a freewheel body of a bicycle hub, said plurality of sprockets including a first sprocket of larger diameter and a last sprocket of smaller diameter, wherein said last sprocket comprises a plurality of teeth and a plurality of throats, each throat being arranged between two consecutive teeth, said throats comprising respective bottom surfaces substantially tangent to a first circumference having a first diameter; and, a plurality of spacers arranged between said first sprocket and said last sprocket, said plurality of spacers including a last spacer arranged between said last sprocket and a second-last sprocket of said plurality of sprockets and having a radially inner surface configured to be fitted onto a free end portion of said freewheel body; wherein said last spacer comprises a radially outer surface having a second diameter greater than said first diameter and including a plurality of recessed areas, each recessed area being positioned at a respective throat of said plurality of throats, wherein said recessed areas comprise respective base surfaces substantially tangent to a second circumference having a third diameter smaller than or equal to said first diameter.