| 摘要 |
A varialbe-speed pulley comprising two confronting pulley parts (1,3) mounted on a shaft (S), at least one of the pulley parts being mounted on the shaft to be movable in an axial direction of the shaft and to be rotatable around the shaft; and, associated with the or each movable pulley part, a respective stop member (5) fixedly mounted on the shaft, and a coil spring (4) interposed between the movable pulley part and the stop member; the or each movable pulley part and the or each stop member having a respective pin protruding from confronting sides thereof and engaging with a respective end of the or each coil spring (4).
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