Apparatus for seeking out and repairing leaks in pipes

Details Apparatus for seeking out and repairing leaks in pipes Apparatus for seeking out and repairing leaks in pipes

1982-09-23

1984-02-07

Shepperd, John W.

Pipes and tubular conduits

Repairing

F16L 5518

Patent

active

044297203

ABSTRACT:
An elongated, flexible body member has leading and trailing end portions and is expandable by air pressure. The body member includes conduits and fittings for allowing such expansion and also has conduits and fittings capable of air testing an area of pipe sealed off by ends of the body member and also capable of discharging grout in such sealed off area. An expandable propelling head is connected to the body member by a fluid operated double acting cylinder whereby upon selected inflation and deflation of the head and operation of the cylinder the body member can be propelled in a pipe. The connection between the propelling head and the body member is flexible to allow the assembly to negotiate bends in a pipe. The body member includes a mixing chamber for mixing a grout and a catalyst therefor prior to discharge into the pipe.

REFERENCES:
patent: 3750711 (1973-08-01), Conklin
patent: 3834422 (1974-09-01), Larson
patent: 3958607 (1976-05-01), Gray
patent: 4203473 (1980-05-01), Roberson

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