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Machine translation
1. (WO1981001579) AN ARRANGEMENT RELATING TO A DRAINAGE PIPE
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1981/001579    International Application No.:    PCT/NO1980/000039
Publication Date: 11.06.1981 International Filing Date: 28.11.1980
IPC:
E02B 11/00 (2006.01)
Applicants:
Inventors:
Priority Data:
793873 28.11.1979 NO
Title (EN) AN ARRANGEMENT RELATING TO A DRAINAGE PIPE
(FR) DISPOSITION RELATIVE A UNE CONDUITE DE DRAINAGE
Abstract: front page image
(EN)An arrangement relating to a drainage pipe (1) having inlet holes (2) for water and a separation wall (3) between an inlet and an outlet section of the pipe, the inlet section of the pipe having an array of said holes (2) in one half of the lower portion of the pipe. A portion of the separation wall has also an array of holes (4), said portion being horizontal or vertical. The drainage pipe can be made from a single folded and joined plate with said holes made in the plate before the pipe forming process. Alternatively the pipe is made through a process of extrusion, said holes being made thereafter by a rectilinear work operation.
(FR)Disposition relative a une conduite de drainage (1) possedant des trous (2) d"admission pour l"eau et une paroi (3) de separation entre une partie d"admission et une partie de sortie de la conduite, la partie d"admission de la conduite etant pourvue d"une rangee desdits trous (2) sur une moitie de la partie inferieure de la conduite. Une partie de la paroi de separation est aussi pourvue d"une rangee de trous (4), ladite partie etant horizontale ou verticale. La conduite de drainage peut etre faite d"une plaque simple pliee et soudee, lesdits trous etant perces dans la plaque avant le procede de formage de la conduite. D"une maniere alternative la conduite est fabriquee par un procede d"extrusion, lesdits trous etant perces consecutivement par une operation de faconnage rectiligne.
Designated States:
Publication Language: English (EN)
Filing Language: Norwegian (NO)