초록 ▼

A conduit repair system and method are disclosed for repairing ruptures in underground conduits. One embodiment of the system comprises a repair liner including fusible link twine segments and hook and loop fasteners to allow the tautly wrapping of the repair liner around the inflatable bladder of a

A conduit repair system and method are disclosed for repairing ruptures in underground conduits. One embodiment of the system comprises a repair liner including fusible link twine segments and hook and loop fasteners to allow the tautly wrapping of the repair liner around the inflatable bladder of a carrier and to secure the repair liner in place by attaching fusible link twine segments to the leading and trailing edges of a carrier. Another embodiment of the system includes a hook and loop fastener to directly engage the repair liner to the bladder, in combination with a water base releasing agent coated on the bladder, with or without the use of the fusible link twine segments. The methods disclosed as contemplated by the present invention utilizes the above-described conduit repair systems in combination with an inflatable bladder carrier, a water base releasing agent coated on the bladder or a releasing material such as a plastic sleeve or sheeting attached to the carrier and wrapped between the repair liner and bladder or a combination of a water base releasing agent and a releasing material, a thermosetting resin impregnating the repair liner, and the process of the resin impregnated repair liner cocuring and bonding to the conduit inner wall surface. The fusible link segments melt during the exothermic reaction, thereby disconnecting the repair liner from the carrier.

대표청구항 ▼

[ What is claimed is:] [1.] A conduit repair system comprising:a repair liner sufficiently large to cover a rupture in a conduit;a plurality of fusible link twine segments attached to a leading edge and a trailing edge of the repair liner, means for attaching the leading edge of the repair liner to

[ What is claimed is:] [1.] A conduit repair system comprising:a repair liner sufficiently large to cover a rupture in a conduit;a plurality of fusible link twine segments attached to a leading edge and a trailing edge of the repair liner, means for attaching the leading edge of the repair liner to a first carrier end and means for attaching the trailing edge of the repair liner to a second carrier end, the fusible link twine segments being capable of melting from an exothermic reaction of a thermosetting resin formulation so as to disconnect the repair liner from the carrier; anda plurality of hook and loop fasteners, means for uniformly engaging a first end and an opposite second end of the repair liner, the means extending from the leading edge to the trailing edge of the repair liner when the repair liner is wrapped around a bladder of the carrier, and means for tautly wrapping the repair liner around the bladder.