Device for repairing pipe joints

F - Mech Eng,Light,Heat,Weapons – 16 – L

Patent

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Details

F16L 55/18 (2006.01) F16L 55/26 (2006.01) F16L 55/28 (2006.01)

Patent

CA 2111876

A device for repairing cast iron pipe joints comprises a head having a motor for actuating a tool and a body, the head being pivotally connected to the body so that it can be pivoted from an axial position to a radial position within the pipe. In a preferred embodiment, the head includes a motor driving a drill bit. A retractable foot is extended to force the head against the pipe wall to be pierced by the drill bit, following which sealant is injected into a hollow drill shaft and flows up the helical grooves of the drill bit into the pipe joint cavity. Preferably a pair of guide wings maintains the device centred in the pipe and raised off of the pipe floor, and the operator monitors progress of the device through a video monitor.

ispositif servant à réparer les joints des tuyauteries en fonte, avec tête comportant un moteur destiné à actionner un outil et un corps d'outil, la tête étant raccordée au corps du dispositif de manière à pouvoir pivoter d'une position axiale à une position radiale, à l'intérieur de la canalisation dont les joints sont à réparer. Dans une version privilégiée, la tête comporte un moteur entraînant un foret; un pied escamotable permet de forcer la tête contre la paroi à percer; une fois cette opération terminée, le produit de scellement est injecté dans la cavité du joint au moyen d'un foret creux à rainures hélicoïdales. De préférence, une paire de butées de guidage maintiennent le dispositif bien centré dans la canalisation, au-dessus du fond de cette dernière. L'opérateur contrôle la progression des travaux au moyen d'un moniteur.

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