F - Mech Eng,Light,Heat,Weapons – 16 – L
Patent
F - Mech Eng,Light,Heat,Weapons
16
L
F16L 55/18 (2006.01) F16L 55/162 (2006.01) F16L 55/163 (2006.01)
Patent
CA 2132701
2132701 9319322 PCTABS00025 Apparatus is disclosed for the in situ repair of an inner wall of a conduit or pipe by pressing a repair material in the form of a sheet or sleeve (24) with settable repair substance against a repair zone (12) of the conduit or pipe, the apparatus having a central tube (17) allowing liquid flow therethrough during a repair operation, an inflation zone (20) surrounding the tube (17) defined by a flexible inelastic material tube (19) sealed at opposed ends to the central tube (17), said flexible inelastic material tube forms a control means to prevent radial expansion beyond a predetermined limit and generally has an inflated diameter approximating the diameter of the conduit or pipe to be repaired, means (21) for introducing an inflation medium into said inflation zone (20), and elastic band means (25) surrounding the flexible inelastic material tube (19) to contract same upon said inflation medium being withdrawn from the inflation zone (20).
Barry Bros. Specialised Services Pty. Ltd.
Bereskin & Parr
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