Method and apparatus for sealing pipe joints from the interior t

Details Method and apparatus for sealing pipe joints from the interior t Method and apparatus for sealing pipe joints from the interior t

1989-10-13

1991-12-31

Arola, Dave W.

Pipe joints or couplings

Packed

Sleeve

285910, 138 97, F16L 2102

Patent

active

050766180

ABSTRACT:
A pipe coupling and method for sealing pipe joints or leaks from the interior of the pipe line are disclosed. A continuous gasket member is positioned against the inside surface of the pipe line on each side of the leak location, a coupling member including at least one axial joint within the line is positioned to span the continuous gasket members, an axial gasket is positioned at the axial joint, and the coupling member is expanded to compress the continuous gasket members and the axial gasket member to prevent leakage of fluid from within the pipe line. The invention provides a convenient apparatus and method for repairing leaks in pipe lines when the exterior of the pipes cannot be conveniently exposed and the interior of the pipe line is accessible.

REFERENCES:
patent: 1607943 (1926-11-01), Carson et al.
patent: 2913262 (1959-11-01), Cenzo et al.
patent: 3153550 (1964-10-01), Hollett
patent: 3700265 (1972-10-01), Dufour et al.
patent: 3915197 (1975-10-01), Piccirilli
patent: 3960395 (1976-06-01), Cirule et al.
patent: 4347018 (1982-08-01), Wrightson et al.
patent: 4360227 (1982-11-01), Bridges
patent: 4664428 (1987-05-01), Bridges
patent: 4927189 (1990-05-01), Burkit
Brochure of Miller Pipeline Corp. "WEKO-SEAL Internal Joint System for Water and Wastewater Piping," (Rev. 3/88) (4 pages).
Brochure of Amex Gesellschaft Fur Rohrleitungsbauteile und Anlagentechnik mbH, "AMEX-10-Reconstruction and Sealing System for Accessible Pipelines; AMEX 32-400 Foil Relining for Non-accessible Pipelines" (20 pages).
Brochure of Brico Industries, Inc., "DEPEND-O-LOK" Mechanical Coupling Systems, catalog 202 (10 pages).

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