Hydraulic and earth engineering – Subterranean or submarine pipe or cable laying – retrieving,... – Submerging – raising – or manipulating line of pipe or cable...
Patent
1978-02-22
1980-04-08
Stein, Mervin
Hydraulic and earth engineering
Subterranean or submarine pipe or cable laying, retrieving,...
Submerging, raising, or manipulating line of pipe or cable...
B63B 3502
Patent
active
041970330
ABSTRACT:
A pipeline is installed by forming a ground surface below the desired grade of the pipeline, holding a pipe length at the desired grade while injecting a hardenable fluid material into a bag positioned between the pipe length and the underlying ground surface so that after the material hardens the bag provides a temporary support for the pipe length at the proper grade and thereafter installing a permanent support by placing hard granular material between the remainder of the underside of the pipe length and the underlying ground surface.
REFERENCES:
patent: 3099911 (1963-08-01), Turzillo
patent: 3656309 (1972-04-01), Bultema
patent: 3657786 (1972-04-01), Wiswell, Jr.
patent: 4063429 (1977-12-01), Wilson
Raymond International Builders, Inc.
Stein Mervin
LandOfFree
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