Patent ID: 7014221

Claim:
A joint for piping comprising: a pipe with an annular swelling wall near an end thereof; and at least one sealing member on the pipe between the end and the annular swelling wall, an annular bush between the sealing member and the annular swelling wall, a connector body having a rear end and a circumferential wall extending forward from the rear end and defining a chamber extending into the rear end of the connector body, the chamber being dimensioned for receiving portions of the pipe, the sealing member and the annular bush, and a socket body including engagement means for engaging the circumferential wall of the connector body and locking means facing inward for engaging a side of the annular swelling wall opposite the annular bush, wherein rotation preventing means is provided between the pipe and the connector body for preventing rotation between the pipe and the connector body, the rotation preventing means includes at least one recessed portion extending forwardly in the circumferential wall from the rear end of the connector body to a closed front end, and at least one projected member projecting from the pipe at the side of the annular swelling wall, the projected member being disposed and dimensioned for fitting the projected member linearly into the recessed portion and for preventing relative rotation between the pipe and the connector body.