| 摘要 |
<p>PULLOUT RESISTANT PIPE COUPLING An improved construction for resisting pipe pullout in a pipe coupling of a type subject to being inwardly swaged in the course of forming a coupled joint. A circumferentially extending lock ring having a plurality of axially spaced chisel shaped teeth on its inward face is inwardly dished about its periphery. The ring is axially located within the coupling shell by an annular inwardly extending protuberance on the inner face of shell interfitting within the dished section of the ring periphery. In response to an imposed swaging force, the coupling shell is constricted inwardly to compress a gasket into sealing engagement with a contained pipe section, while the lock ring is concomitantly constricted inwardly into a gripping interlock therewith.</p> |
