EP 0297907 A1 19890104 - Plastics drainage pipe and manufacture thereof.
Title (en)
Plastics drainage pipe and manufacture thereof.
Title (de)
Drainagerohr aus Plastik und seine Herstellung.
Title (fr)
Tuyau de drainage en matière plastique et sa fabrication.
Publication
Application
Priority
FI 872958 A 19870703
Abstract (en)
The invention relates to a plastic drainage pipe with laterally corrugated wall (1). The material forming the wall (1) of the pipe is in at least one zone along the length of the pipe arranged to overlap so that the overlapping parts (9, 10) of the pipe form between them water inlet channels (8, 16), the entry apertures of which channels are orientated downwards with the pipe in its installed position. The invention additionally relates to a method for manufacture of such drainage pipe by placing the free parts (9, 10) of the pipe one on top of the other and joining them permanently together for example by glueing or welding.
IPC 1-7
IPC 8 full level
E02B 11/00 (2006.01)
CPC (source: EP)
E02B 11/005 (2013.01)
Citation (search report)
- [A] EP 0033570 A1 19810812 - WAVIN BV [NL]
- [A] DE 2642623 A1 19780323 - INTERPLANT PLANTANA HOLDING AG
- [A] DE 1180201 B 19641022 - NOBEL-BOZEL FA [FR]
- [A] US 4163619 A 19790807 - FALES DAVID E [US]
Designated contracting state (EPC)
AT BE DE FR GB NL SE
DOCDB simple family (publication)
EP 0297907 A1 19890104; FI 77076 B 19880930; FI 77076 C 19890110; FI 872958 A0 19870703
DOCDB simple family (application)
EP 88306029 A 19880701; FI 872958 A 19870703