B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
B29C 63/36 (2006.01) F16L 55/165 (2006.01)
Patent
CA 2597348
A process for porting air inflated flexible resin impregnated cured in place liner by pulling without loss of pressure is provided. A selectively openable bulkhead fitting is installed at the pull-in end. The filling may be installed in the end of a pull- in liner; on a porting sleeve or secured to an inflated pulled in or inverted liner. A port is formed through the bulkhead fitting by cutting a hole through the valve assembly. A steam fitting with an exhaust hose is coupled to the bulkhead fitting while maintaining pressure in the inflation bladder. Steam for curing the resin is then introduced into the inversion apparatus to cure the resin and is exhausted through the exhaust hose.
L'invention porte sur un procédé de mise en place d'un doublage souple gonflable imprégné de résine durcissant sur place consistant à tirer ledit doublage sans perte de pression. Une cloison étanche ouvrable est installée à l'extrémité d'où s'exerce la traction et à l'extrémité du doublage à tirer, et disposé sur une gaine de mise en place où fixé à un doublage gonflé tiré ou inversé. Par ailleurs, on ménage une ouverture dans la cloison étanche en perçant un trou dans la soupape, et on pose sur la cloison étanche un dispositif d'introduction de vapeur tout en maintenant la pression dans le ballon gonflable. Pour faire prendre la résine, on introduit ensuite dans l'appareil d'inversion de la vapeur qui s'échappe par le tube d'échappement.
Baxter Richard P.
Coyne Joseph M.
Driver Franklin Thomas
Driver Paul L.
Blake Cassels & Graydon Llp
Ina Acquisition Corp
Insituform (netherlands) B.v.
LandOfFree
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