Plastic and nonmetallic article shaping or treating: processes – Repairing or restoring consumer used articles for reuse
Patent
1993-06-02
1995-03-14
Vargot, Mathieu D.
Plastic and nonmetallic article shaping or treating: processes
Repairing or restoring consumer used articles for reuse
138 98, 156294, 264269, B29C 6334
Patent
active
053975138
ABSTRACT:
A thin, flexible tubular membrane provides a heat containment tube for inserting into and inflation within an underground conduit to be repaired. Folded rigid thermoplastic pipe is inserted into the tube while not and flexible. The tubular membrane is pressurized to exclude unwanted fluids from within the existing conduit. Hot steam is injected into the tube to heat the pipe full-length externally and internally until flexible. The pipe is then rounded and expanded against the walls of the conduit with the tube therebetween. The rounding and expanding of the pipe is carried out progressively by moving a plug through the pipe and by injecting hot steam under pressure behind the plug.
REFERENCES:
patent: 2794758 (1954-09-01), Harper et al.
patent: 3080269 (1963-03-01), Pollock et al.
patent: 4273605 (1981-06-01), Ross
patent: 4627471 (1986-12-01), Parkes et al.
patent: 4643465 (1987-02-01), Green et al.
patent: 4744842 (1988-05-01), Webster et al.
patent: 4950446 (1990-08-01), Kinumoto et al.
patent: 4985196 (1991-01-01), LeDoux et al.
Nu-Pipe, Inc.
Vargot Mathieu D.
LandOfFree
Method for installing a length of substantially rigid thermoplas does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for installing a length of substantially rigid thermoplas, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for installing a length of substantially rigid thermoplas will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-711830