BRANCH PIPE CONNECTION PORT AND STREET INLET HAVING ITS BRANCH PIPE CONNECTION PORT

摘要

PROBLEM TO BE SOLVED: To provide a branch pipe connection port and a street inlet having its branch pipe connection port for preventing water leakage from a connection port installing part, even when post-installing the connection port in an opening provided in a circular pipe.;SOLUTION: The present invention provides a branch pipe connection port in which the branch pipe connection port is composed of a spigot having a spigot for inserting an opening part of a circular pipe and a spigot flange fixed to a spigot outer peripheral part and curved so as to run along a sidewall on one side of the circular pipe, and a socket having a socket fitted to the spigot of the spigot and a socket flange fixed to a socket outer peripheral part and curved so as to run along a sidewall on the other side of the circular pipe, and an area in the root vicinity of the spigot flange of the spigot outer peripheral part comprises a stepped part of expanding a diameter more than an outer diameter of an area except for the root vicinity of the spigot flange.;SELECTED DRAWING: Figure 5;COPYRIGHT: (C)2017,JPO&INPIT