Variable speed transmission

Details Variable speed transmission Variable speed transmission

F - Mech Eng,Light,Heat,Weapons

16

H

74/57

F16H 9/24 (2006.01) B62M 9/06 (2006.01)

Patent

CA 1045412

ABSTRACT OF THE DISCLOSURE A positive infinitely variable transmission mechanism employs sprags to transmit torque from a driving member to a driven member. By varying the extent by which the driving and driven members depart from a concentric relationship, the sprags impart additional motion, by a toppling action, thus providing different drive ratios. The invention is exemplified by a bicycle transmission arrangement wherein a chain driven input drum is mounted in selectively eccentric driving relationship with an output drum on the axial shaft of a wheel. - 1 -

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