Lining of passageways

Details Lining of passageways Lining of passageways

1975-11-05

1977-12-20

Van Horn, Charles E.

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

Composite article making

61 727, 156287, B29C 1700

Patent

active

040642119

ABSTRACT:
A method wherein a tubular liner is applied to the surface of a passageway such as a tunnel or pipeline bore. The liner may be in the form of a flattened tube of absorbent material such as felt or foam such is impregnated with synthetic resin. The liner is anchored at one end of the passageway and is fed into the passageway being turned inside out as it is so fed in. In order to eliminate friction, the liner, before being turned inside out, is supported buoyantly by liquid which serves to carry the liner.

REFERENCES:
patent: 2770950 (1956-11-01), Collins
patent: 2794758 (1957-06-01), Harper et al.
patent: 3132062 (1964-05-01), Lang et al.
patent: 3230129 (1966-01-01), Kelly
patent: 3511734 (1970-05-01), Darrow
patent: 3583169 (1971-06-01), Morgan
patent: 3778878 (1973-12-01), Bindari
patent: 3927164 (1975-12-01), Shimabukuao
patent: 3940942 (1976-03-01), Gower

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