Hydraulic and earth engineering – Subterranean or submarine pipe or cable laying – retrieving,... – With forming or cutting of pipe or cable
Patent
1992-04-06
1993-03-09
Reese, Randolph A.
Hydraulic and earth engineering
Subterranean or submarine pipe or cable laying, retrieving,...
With forming or cutting of pipe or cable
405154, 405184, 166 553, 138 97, 138111, F16L 5518
Patent
active
051921650
ABSTRACT:
A method and apparatus for replacing an individual conduit located within a bank of individual conduits, without rendering inoperable the surrounding adjacent individual conduits of the bank. A conduit expander is pulled through the subject individual conduit to break it and push the pieces out. Knife blades may be used to split the individual conduit. A rearward flared out portion pushes the broken conduit outwardly far enough for a new conduit to be moved therethrough, but not far enough to render inoperable the surrounding adjacent individual conduits of the bank. A replacement conduit is attached to the rear end of the conduit expander and moved into the individual conduit as the conduit expander moves therethrough.
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Olsen Arlen L.
PIM Corporation
Reese Randolph A.
LandOfFree
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