Patent ID: 6312355
Filing Date: 2001-11-06
Classification: B62M

Abstract:
A bicycle shifting device comprising:a driver;a slave;a power transmission mechanism coupled between the driver and the slave for communicating rotational power from the driver to the slave through a plurality of power transmission paths;a clutch for selecting an individual transmission path from the plurality of power transmission paths in the power transmission mechanism by moving from a first clutch position to a second clutch position; anda clutch actuating mechanism for causing the clutch to move from the first clutch position to the second clutch position when the clutch is in the first clutch position only when the driver is at a predetermined subset of rotational positions less than all of the possible rotational positions of the driver and for preventing the clutch from moving from the first clutch position to the second clutch position when the clutch is in the first clutch position and the driver is at rotational positions other than the predetermined subset of rotational positions.