B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
B62L—BRAKES SPECIALLY ADAPTED FOR CYCLES
B62L5/00—Brakes, or actuating mechanisms therefor, controlled by back-pedalling
B62L5/02—Brakes, or actuating mechanisms therefor, controlled by back-pedalling the brakes being actuated through coacting coaxial cones located in the rear wheel hub
B62L5/04—Brakes, or actuating mechanisms therefor, controlled by back-pedalling the brakes being actuated through coacting coaxial cones located in the rear wheel hub the brakes being of expanding brake-bushing type
Convertisseur de mouvement rotatif en mouvement lineaire comportant des billes en roulement et mecanisme d'avance a deux vitesses contenant un tel convertisseur