Implements or apparatus for applying pushing or pulling force – Method or apparatus for placement of conductive wire – By fluid pressure differential in conduit
Patent
1986-08-11
1988-07-12
Corbin, David H.
Implements or apparatus for applying pushing or pulling force
Method or apparatus for placement of conductive wire
By fluid pressure differential in conduit
405154, B65H 5900
Patent
active
047565101
ABSTRACT:
Fiber optic cables and similar signal conductors are installed in fluid transmission pipelines by cutting the pipeline at spaced apart points to form a section of pipeline for receiving the cable, installing pipeline pig launching and receiving fittings on the section of pipeline to receive the cable, and pumping a pipeline pig from the launching fitting to the receiving fitting while connected to one end of the cable by pumping liquid or gas into the pipeline behind the pig. Pressure responsive seals are provided for engagement with the cable at the launching fitting to prevent leakage of pumped fluid from the pipeline section into which the cable is being installed. The seals may be used to seal cable entry and exit points on inactive pipelines. Active pipelines are restored to service by the installation of a cable seal assembly having a split stuffing box and packing gland arrangement for sealing the entry and exit point of the cable with respect to the pipeline.
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Klamm Kenneth G.
Yaege Margaret A.
Atlantic Richfield Company
Corbin David H.
Martin Michael E.
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