Patent ID: 7032916

Claim:
In combination with a bicycle, a single-piece attachment member to be fitted to a rear wheel axle and a tine holding said rear wheel of said bicycle for providing lateral dynamic stability of said bicycle, a pair of such single-piece attachment members adapted to be used concurrently on opposite respective lateral sides of said rear wheel axle, each said single-piece attachment member comprising: an upper vertical portion including at least one projection and at least one through-hole for insertion on said rear wheel axle, and a lower substantially horizontal spindle portion connected to said vertical portion through a C-shaped compliant structure for allowing said spindle portion to move vertically when subjected to force, said spindle portion being substantially parallel to said rear wheel axle, said C-shaped compliant structure having a central axis parallel to the direction of motion of the bicycle and an opening located between said vertical portion and said spindle portion, said portions acting as substantially perpendicular segments and said C-shaped compliant structure acting as a vertex.