Lined pipe wherein the liner comprises a one-way valve

Details Lined pipe wherein the liner comprises a one-way valve Lined pipe wherein the liner comprises a one-way valve

2006-01-10

2006-01-10

Hook, James (Department: 3754)

Pipes and tubular conduits

Repairing

Patches

C138S104000, C138S112000, C138S114000

Reexamination Certificate

active

06983766

ABSTRACT:
A pipe for the transport of fluids, which pipe is internally provided with a liner, wherein the liner is provided with at least one non-return valve arranged in the liner wall, wherein the non-return valve has an inlet end arranged near the outer surface of the liner wall and an outlet end arranged near the inner surface of the liner wall.

REFERENCES:
patent: 4934654 (1990-06-01), Linnemann
patent: 5520484 (1996-05-01), Kamiyama et al.
patent: 6056016 (2000-05-01), Rogers
patent: 6634387 (2003-10-01), Glejbol
patent: 2004/0074551 (2004-04-01), McIntyre
patent: 2115103 (1983-09-01), None
patent: WO 00/08368 (2000-02-01), None
patent: WO 00/17479 (2000-03-01), None
patent: WO 02/33298 (2002-04-01), None
patent: WO/0233298 (2002-04-01), None
International Search Report for Appln No.: PCT/EP01/15138 dated Oct. 21, 2002.

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