Variable speed transmission

Details Variable speed transmission Variable speed transmission

1974-07-11

1976-10-26

Scott, Samuel

Machine element or mechanism

Mechanical movements

Rotary to intermittent unidirectional motion

F16H 2904

Patent

active

039876829

ABSTRACT:
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.

REFERENCES:
patent: 787830 (1905-04-01), Conant
patent: 1641902 (1927-09-01), Ditter
patent: 1957196 (1934-05-01), Bonnet
patent: 3156124 (1964-11-01), Miller

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