Method for lining pipe lines with a pressurized gas

Details Method for lining pipe lines with a pressurized gas Method for lining pipe lines with a pressurized gas

1988-08-26

1989-11-28

Ball, Michael W.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156294, 156423, B29C 6336

Patent

active

048835579

ABSTRACT:
Method and apparatus for lining pipe lines, especially those buried in the ground and having a large diameter, according to the so-called evagination-lining technique by using a compressed gas as a pressurized fluid, which is so improved as to secure complete sealing of a pressure container for inserting the lining material into a pipe line by using a specific sealing device using a liquid in place of a mechanical sealing device while preventing a binder applied onto the inner surface of the lining material from being squeezed backwards when the lining material is introduced into the pressure container.

REFERENCES:
patent: 1595473 (1926-08-01), Minton
patent: 2029985 (1936-02-01), Clark et al.
patent: 3415083 (1968-12-01), Okazaki et al.
patent: 4064211 (1977-12-01), Wood
patent: 4334943 (1982-06-01), Zenbayashi et al.
patent: 4350548 (1982-09-01), Zenbayashi et al.
patent: 4368091 (1983-01-01), Ontsuga et al.
patent: 4385885 (1983-05-01), Wood
patent: 4427480 (1984-01-01), Kamuro et al.
patent: 4668125 (1987-05-01), Long, Jr.
patent: 4685983 (1987-08-01), Long, Jr.

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