Patent ID: 7004487

Claim:
A continuously variable transmission adapted to be disposed on a bicycle frame of a bicycle in a position between front and rear wheels of the bicycle in a longitudinal direction thereof and substantially upwardly of a plane which contains an axis of rotation of said front wheel and an axis of rotation of said rear wheel, the continuously variable transmission comprising: a transmission mechanism having a plurality of link units, each comprising a plurality of transmission links, for converting rotary motion of an input shaft rotated by a pedal-operated crankshaft into swinging motion; a one-way clutch coupled to each of said link units for converting the swinging motion of the link units into rotary motion of an output shaft; and a transmission control mechanism for moving an end of a transmission control link having an opposite end pivotally coupled to each of said link units thereby to continuously vary the rotational speed of said output shaft, wherein a drive link of said transmission links of each of said link units is pivotally supported on an eccentric ring coupled to said input shaft for rotation in unison therewith.