| 摘要 |
A variable ratio chain sprocket is disclosed wherein a plurality of chain engaging segments are slidingly affixed between a first pair of disks and are constrained to move in a radial direction with respect thereto. A second pair of disks, rigidly attached to a shaft, are disposed adjacent the first pair of disks and engage a projection on the segments in spiral slots. The torque applied to the sprocket controls the relative rotation between the first and second pair of disks and causes the chain engaging segments to move in a radial direction. The chain engaging segments have teeth movably attached thereto. The teeth are depressed radially inwardly when contacted on the top by a chain roller.
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