| 摘要 |
A driving device for driving a tubular member includes a belt slidably received in handle and has one end secured to the handle to form a loop for engaging onto the tubular member. A cam is pivotally and eccentrically secured to the handle and has one or more teeth biased to engage with the clamping belt and to secure the clamping belt to the handle. The handle further includes a pawl having one or more teeth for engaging with the clamping belt and for allowing the tubular member to be solidly driven or rotated by the driving device.
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