| 摘要 |
A pipe cutter includes a slide slidably engaged in the housing of the pipe cutter, a shaft rotatably supported in the housing, a handle having an upper portion fixed to the shaft, a gear wheel engaged on the shaft and engaged with the slide, and a ratchet gearing engaged between the shaft and the gear wheel for driving the gear wheel to rotate in an active direction. The gear wheel can be prevented from rotating in a reverse direction by a pawl.
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