Boring or penetrating the earth – Processes
Patent
1983-02-25
1985-01-15
Novosad, Stephen J.
Boring or penetrating the earth
Processes
175 53, 175 67, 2541343FT, 2541346, E21B 700
Patent
active
044933797
ABSTRACT:
The technique for replacing an existing underground cable and a specific apparatus for doing so are disclosed herein. The apparatus includes a main body or cable follower which is interconnected with the cable to be replaced for slidable movement along the latter. At the same time, the apparatus provides means for reaming around the cable, preferrably by means of one or more fluid jets. Once the soil surrounding the cable has been loosened using this apparatus, the cable can be easily pulled out of the ground. At the same time, the replacement cable can be attached to the existing cable and pulled into its place.
REFERENCES:
patent: 2349033 (1944-05-01), Elliott
patent: 3451491 (1969-06-01), Clelland
patent: 3465834 (1969-09-01), Southworth, Jr.
patent: 3550698 (1970-12-01), Pauley
patent: 4249620 (1981-02-01), Schmidt
Kendrew Thomas J.
O'Hanlon Thomas A.
Reichman James M.
Bui Thuy M.
Electric Power Research Institute Inc.
Novosad Stephen J.
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