| 摘要 |
A torque transmission system for effecting a driving connection between laterally spaced driving, and driven shafts. A fist wheel is mounted on the driving shaft and a second wheel is mounted on the driven shaft. Each of the wheels have substantially identical pitch diameters. An endless flexible torque transmitter operatively connects the first and second wheels. A traveling insert band circumscribes and operatively engages one of the wheels at a time, and when the traveling insert band engages one of the wheels, the insert band is located radially inwardly of the endless flexible torque transmitter. The traveling insert band has leading and trailing ends located in substantially circumferentially opposed juxtaposition when the traveling insert band operatively engages one of the wheels. Mechanisms are also provided selectively to derail the leading end of the traveling insert band from that wheel operatively engaged thereby. The traveling insert band is adapted, when its leading end is derailed from one of the wheels to travel to the other of the wheels and to circumscribe and operatively engage the other wheel radially inwardly of the endless torque transmitter thereby providing a different speed ratio between said driving and driven shafts.
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