| 摘要 |
A pipe coupling wherein a one-piece or composite tubular housing has at least one axially parallel slot and its end portions confine annuli of teeth which must penetrate into the ends of the respective pipes to hold the pipes against axial movement relative to each other. In order to ensure that all teeth of each annulus of teeth will penetrate into the peripheral surfaces of the respective pipes when the width of the slot or slots in the housing is reduced, at least those teeth which are adjacent the slot or slots have longer flanks which are nearer to and shorter flanks which are more distant from the respective slot or slots. This reduces the likelihood that teeth which are adjacent the slot or slots would plush the material of the pipes toward the coresponding slot or slots during a narrowing of the slot or slots for the purpose of applying the coupling around the ends of pipes. |
