Automatic transmission for multi-speed bicycle

Details Automatic transmission for multi-speed bicycle Automatic transmission for multi-speed bicycle

F - Mech Eng,Light,Heat,Weapons

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F16H 9/24 (2006.01) B62M 9/12 (2006.01)

Patent

CA 1271053

ABSTRACT OF THE DISCLOSURE An automatic transmission for a linked chain driven wheel includes a plurality of chain-engaging sprockets dis- posed coaxially with and spaced apart along the axis of rotation of the wheel. Each of the sprockets has a predeter- mined diameter which differs from that of the other sprock- ets. The sprockets are drivingly connected to the wheel. A chain guide, which is axially movable relative to the sprockets, is provided. The chain guide, when aligned with a given sprocket, will guide the drive chain into engage- ment with that given sprocket. A chain guide actuator is operatively connected to the chain guide for varying the axial position of the chain guide automatically in response to the angular speed of the wheel.

537317

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