公开(公告)号：US06367849B1

公开(公告)日：2002-04-09

申请号：US09576025

申请日：2000-05-23

申请人： Yoshiaki Tatsuta ,  Kazuya Yamashita ,  Takeshi Mochiduki ,  Kentaro Takenaka

发明人： Yoshiaki Tatsuta ,  Kazuya Yamashita ,  Takeshi Mochiduki ,  Kentaro Takenaka

IPC分类号： F16L17035

CPC分类号： F16L25/0063 ,  F16L21/06 ,  F16L23/22 ,  Y10S285/903

摘要： A joint (and method) connects synthetic resin corrugated pipes, each of the corrugated pipes including a pipe wall having sectionally rectangular wall portions and sectionally circular wall portions disposed alternately in a longitudinal direction of the corrugated pipe. The sectionally circular wall portions each include an annular-shaped protrusion projecting outwardly from the sectionally circular wall portions disposed substantially at a center of the sectionally circular wall portion between adjacent sectionally rectangular wall portions in the longitudinal direction. The joint includes a pair of semicircular-shaped joint main bodies coupled with each other by bolts, each having a recessed groove defined by both of its side edge portions in a width direction thereof and also having tightening bolt holes respectively formed at both peripheral end portions in a peripheral direction thereof, and a pair of watertight packings respectively formed of elastic material and respectively received in the recessed grooves of the semicircular-shaped joint main bodies, each of the watertight packings having a semicircular portion which includes two edge portions disposed at two end portions in a width direction thereof, and a projecting portion disposed between the two edge portions in the width direction and inwardly projected in a radial direction of the pipe.

摘要翻译： 接合（和方法）连接合成树脂波纹管，每个波纹管包括管壁，其具有沿波纹管的纵向方向交替布置的截面矩形壁部分和截面圆形壁部分。 截面圆形壁部分每个都包括一个环形突起，该圆形突起从基本上位于相邻截面矩形壁部分之间的截面圆形壁部分的中心处的截面圆形壁部分沿纵向方向突出。 该接头包括一对通过螺栓彼此连接的半圆形接头主体，每一个具有由其两个侧边缘部分沿其宽度方向限定的凹槽，并且还具有分别形成在两个外周端部处的紧固螺栓孔 并且分别容纳在半圆形接头主体的凹槽中的每一个水密性填料均具有半圆形部分，该半圆形部分包括设置在两个第二部分的两个边缘部分 在宽度方向上的端部，以及设置在两个边缘部分之间的沿宽度方向并沿管的径向向内突出的突出部分。