| 摘要 |
A chain-drive transmission including two sets of a plurality of sprockets, each set rotatably mounted on a rotatable shaft. Sprockets on each shaft are paired with a corresponding sprocket on the other shaft and are joined by the drive chain. The diameters of each pair of sprockets are selectively predetermined so as to provide a desired speed range for the chain-drive transmission. A selector and interlock mechanism is also provided so as to suitably select and interlock each preselected sprocket with its respective shaft thereby transmitting torque between the two rotatable shafts through the chain.
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