Method and apparatus for laying pipe on an incline

Details Method and apparatus for laying pipe on an incline Method and apparatus for laying pipe on an incline

2005-11-29

2005-11-29

Lagman, Frederick L. (Department: 3673)

Hydraulic and earth engineering

Subterranean or submarine pipe or cable laying, retrieving,...

Advancing subterranean length of pipe or cable

C405S184400, C405S154100

Reexamination Certificate

active

06969215

ABSTRACT:
A pipeline is constructed in steep terrain by digging a ditch on the incline, assembling pipe joints together adjacent a top of the incline and then lowering the assembled pipe joints down the incline through the ditch. A wheeled assembly at the lower end of the pipeline carries much of the load and rolls down the ditch as allowed by winch equipment at the top of the incline. Bearing supports are installed periodically in the ditch to support the pipeline, the supports being of a softer material than coatings on the pipe.

REFERENCES:
patent: 2991974 (1961-07-01), Bingham
patent: 3248884 (1966-05-01), Bender
patent: 3744259 (1973-07-01), Wagley
patent: 4069684 (1978-01-01), Wilson
patent: 4130925 (1978-12-01), Gibson
patent: 5197713 (1993-03-01), Strosnider
patent: 6450736 (2002-09-01), Eck
patent: 6588984 (2003-07-01), Fukui
patent: 6742964 (2004-06-01), Fukui
patent: 60-5905 (1985-01-01), None

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