Method for repairing a transport pipe

Details Method for repairing a transport pipe Method for repairing a transport pipe

1993-10-21

1994-11-15

Briggs, William

Metal working

Method of mechanical manufacture

Gas and water specific plumbing component making

2940211, 138 97, 285 21, F16L 5516, B23P 600

Patent

active

053635418

ABSTRACT:
This describes a method and apparatus for repairing a plastic transport pipe with a defective section while the pipe is under pressure. A pressure vessel encloses the defection section and seals with the pipe. The defective section is cut in two and the defective section drops out into the lower space of the vessel. A repair nipple is then moved into the space between the two cut ends of the pipe. Electrofusion collars are placed over the joint between the insert nipple and the cut ends of the transport pipe. The electrofusion collars are then energized to effect a leakproof joint between the insert nipple and the two ends of the transport pipe. The insert nipple may be any replacement section desired, such as a section with a Tee in it.

REFERENCES:
patent: 3171419 (1965-03-01), Black
patent: 3796233 (1974-03-01), Lacey
patent: 4014180 (1977-03-01), Kelly et al.
patent: 4049480 (1977-09-01), Kutschke
patent: 4516593 (1985-05-01), Muto
patent: 4756338 (1988-07-01), Guyatt et al.
patent: 4986698 (1991-01-01), Chin
patent: 5062207 (1991-11-01), Martin et al.

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