Hydraulic and earth engineering – Subterranean or submarine pipe or cable laying – retrieving,...
Patent
1996-01-22
1997-12-23
Graysay, Tamara L.
Hydraulic and earth engineering
Subterranean or submarine pipe or cable laying, retrieving,...
138 97, 156287, F16L 5516
Patent
active
057001103
ABSTRACT:
A bent pipe lining method which can get rid of bulky creases of the liner commonly formed at the bends of the pipe, and the method is characterized by a use of a flat belt that is hitched to the sewn-end of the liner bag, which pulls the flat belt inside itself as it is everted into the bent pipe; when the liner bag is hardened the flat belt is kept stretched so as to keep the bulky creases compressed and bent flatly.
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Kamiyama Takao
Yokoshima Yasuhiro
Graysay Tamara L.
Lagman Frederick L.
Shonan Gosei-jushi Seisakusho K.K.
Yokoshima & Company
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