Method for inserting a communication wire through a pipeline by

Details Method for inserting a communication wire through a pipeline by Method for inserting a communication wire through a pipeline by

1994-04-08

1996-03-19

Watson, Robert C.

Implements or apparatus for applying pushing or pulling force

Method or apparatus for placement of conductive wire

By fluid pressure differential in conduit

B65H 5900

Patent

active

054997976

ABSTRACT:
A method and an apparatus are provided for inserting and removing a communication wire in and out of a pipeline by air flow, in which static electricity can be prevented from being generated, and a long communication wire can be inserted and removed. The communication wire is fed from a reel, and inserted into a pipeline through a blowing head. Compressed air is also sent from a compressor to the pipeline through the blowing head. A drop cylinder is attached to a T-branch on the way of the pipeline, conductive material stored therein is supplied into the pipeline at a controlled rate. A recovery bottle is attached to the outlet side of the pipeline so that the air flow blowing out of the outlet side is passed through a filter 11, and at the same time the conductive material is recovered. By making the conductive material pass through the pipeline together with the air flow, generated static electricity can be eliminated, and the communication wire can be prevented from contacting tightly with the pipeline because of the static electricity.

REFERENCES:
patent: 4232981 (1980-11-01), Lee
patent: 4412673 (1983-11-01), Ramsden et al.
patent: 4952021 (1990-08-01), Aoki et al.

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