| 摘要 |
<p>Pipe wrench with two shanks each with a toothed jaw at an angle to the shank, the shanks connected at a joint and one shank translatable relative to the joint to adjust the distance between the jaws, with the tooth tips on each jaw located in a plane, and the height and pitch distance between teeth monotonously increasing from a small value for teeth nearest to the shank up to a larger value for teeth farthest from the shank, the increase being at least 25 %.</p> |
