Patent ID: 7556486

Claim:
A repair apparatus for use inside a pipe comprising: a) a pressurized air inlet; b) an air regulator; c) a walled housing adapted to seal against an inside surface of said pipe; d) a supply nozzle; wherein the air regulator regulates a first air pressure within the walled housing sufficiently for air pressure to stop ground water inflow, when ground water is present, as well as to force repair material into a cracked surface; and an opening, said opening surrounded by a sealing surface, wherein the supply nozzle can be manipulated up and down, in and out, and left and right within said housing while said sealing surface maintains a seal with said cracked surface, for placement of repair material pumped at a second pressure higher than said first pressure through the grout container through the supply nozzle, at least one observation window and a light in the housing, enabling an operator to observe movement of the nozzle along a crack as material flows into the crack.