公开(公告)号：EP1861648B1

公开(公告)日：2015-12-30

申请号：EP06737855.4

申请日：2006-03-13

申请人： Advanced Drainage Systems, Inc.

发明人： GODDARD, James, B. ,  KURDZIEL, John Martin

IPC分类号： F16L57/00 ,  F16L11/15 ,  B29C47/06 ,  F16L9/00

CPC分类号： F16L57/00 ,  B29C47/0023 ,  B29C47/005 ,  B29C47/021 ,  B29C47/065 ,  B29L2009/00 ,  B29L2016/00 ,  B29L2023/003 ,  F16L9/00 ,  F16L9/06

公开(公告)号：EP1861648A2

公开(公告)日：2007-12-05

申请号：EP06737855.4

申请日：2006-03-13

申请人： Advanced Drainage Systems, Inc.

发明人： GODDARD, James, B. ,  KURDZIEL, John Martin

IPC分类号： F16L57/00

CPC分类号： F16L57/00 ,  B29C47/0023 ,  B29C47/005 ,  B29C47/021 ,  B29C47/065 ,  B29L2009/00 ,  B29L2016/00 ,  B29L2023/003 ,  F16L9/00 ,  F16L9/06

摘要： A pipe (300) having an axially extending bore is defined by a pipe wall including a corrugated outer wall (320) having axially adjac annular outwardly-extending crests separated by valleys (340). The pipe wall also includes a non-linear outer layer (350) having adjacent concave portions (360) and convex portions (370). The concave portions are aligned with the corrugation crests of the out wall so that the convex portion of the outer layer extends outwardly between at least two corrugation crests to provide improved resistance to deformation.