Patent ID: 6775894
Filing Date: 2004-08-17
Classification: E21B,F16L,Y10T

Abstract:
An apparatus for repairing a pipe having a damaged section, the apparatus comprising:an elongated cylindrical barrel having an open lower end, a closed upper end and a first bore therebetween, the closed upper end including a second bore; a plunger assembly including a plunger slidably received in the first bore, the plunger assembly further including an elongated tube having a plurality of orifices in fluid communication with the interior of the tube at a lower end thereof, the lower end of the tube being connected to the plunger, the tube being slidably received in the second bore; a coiled patch having spring-like properties, the patch being loaded into the first bore via the open lower end of the barrel and being disposed proximate to the plunger; and wherein pressurized hydraulic fluid may be applied to an upper end of the elongated tube, the fluid exiting the orifices in the lower end, causing the barrel to move upwardly with respect to the plunger, thereby ejecting the patch from the barrel, wherein the patch uncoils against the wall of the pipe sealing the damaged portion thereof.