A gearing device consisting of axle 10, input disc 9 with an inner convex friction surface, intermediate rollers with ends 12, and output disc 17 with an inner concave friction surface. The gear ratio is altered by the radial displacement of the intermediate rollers under urging from a gearshift means. The radius of curvature of the output disc may be three times that of the input disc and rollers. The gearing device may be for a bicycle or other pedal cycle and the gearshift means may be a gearshift cable operated by the rider.
A gearing device
2023-12-20
Patent
Elektronische Ressource
Englisch
Online Contents | 1994
Bearings for gearing - roller gearing technology
Kraftfahrwesen | 2015
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