Apparatus and a method for lining an underground pipe

Details Apparatus and a method for lining an underground pipe Apparatus and a method for lining an underground pipe

1996-12-17

1998-12-08

Graysay, Tamara L.

Hydraulic and earth engineering

Subterranean or submarine pipe or cable laying, retrieving,...

138 97, 156287, 156293, F16L 5518

Patent

active

058460250

ABSTRACT:
An apparatus and a method for lining an underground pipe are proposed: the pipe is plugged at a location upstream to a manhole; a three-pronged passage is installed whose first end penetrates the plug and opens in the interior of the pipe upstream to the plug and whose second end opens in the manhole at the level of the pipe, and whose third end opens in the atmosphere at a substantially high level; then the second end of the three-pronged passage is closed to cause the drain water to rise and go toward the third end of the three-pronged passage; the drain water is let to fall from the down-looking third end of the three-pronged passage into an upper end of a vertical eversion conduit provided in the manhole, thereby effecting eversion of a tubular liner into the vertical eversion conduit means; the tubular liner everting in the vertical eversion conduit is guided by a guide device such that at the lower end of the vertical eversion conduit the eversion head of the tubular liner is caused to turn orthogonally into the downstream direction; and the tubular liner is constricted at a location downstream to the repair portion of the pipe so that the tubular liner is inflated.

REFERENCES:
patent: 5520484 (1996-05-01), Kamiyama et al.
patent: 5653555 (1997-08-01), Catallo
patent: 5706861 (1998-01-01), Wood et al.
patent: 5725328 (1998-03-01), Schmager

Affiliated with

Also associated with

Rating

Apparatus and a method for lining an underground pipe does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Apparatus and a method for lining an underground pipe, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus and a method for lining an underground pipe will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-170764