Patent ID: 6383107
Filing Date: 2002-05-07
Classification: B62M,F16H,Y10T

Abstract:
An apparatus for changing direction of driving force for bicycles, the apparatus comprising:a pedal shaft having angular portion; a drive transferring portion composed of a carrier which is engaged with the angular portion, a forward clutch pin group and a reverse clutch pin group are formed therein, a connecting ring having inner surface which is driven by contacting with the forward clutch pin group; a drive changing portion composed of an inner gear which is driven by contacting with the reverse clutch pin group and a gear portion is formed along inner circumference therein, forward planetary gears which are engaged with the inner gear, reverse planetary gears which are engaged with the forward planetary gears and a ring gear through the connecting ring at the same time; a sprocket which is installed on the connecting ring; a shaft housing having a plurality of pin holes; fixing means for fastening above elements.