发明授权
- 专利标题： Underdrain pipe
- 专利标题（中）： 暗渠
-
申请号： US838535申请日： 1997-04-09
-
公开(公告)号： US6076992A公开(公告)日： 2000-06-20
- 发明人: Kouki Fukui , Yasuhiro Kikumori
- 申请人： Kouki Fukui , Yasuhiro Kikumori
- 申请人地址： JPX Tokyo
- 专利权人： Totaku Industries, Inc.
- 当前专利权人： Totaku Industries, Inc.
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX8-114172 19960410
- 主分类号： E02B11/00
- IPC分类号： E02B11/00 ; E02B13/00 ; F16L11/00
摘要：
An underdrain pipe has a pipe wall in which wall portions rectangular in section and wall portions circular in section are disposed alternately in a longitudinal direction of the pipe, in which a number of water collecting small holes are formed in portions of the pipe wall, and in which the whole of the pipe wall is formed of material of synthetic resin or rubber.