Pipe inspection system

Details Pipe inspection system Pipe inspection system

1991-03-22

1992-01-28

Peng, John K.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

738658, H04N 718

Patent

active

050847643

ABSTRACT:
A method of inspecting a water pipeline while the pipeline is full of water comprises providing a liquid-tight casing housing a video camera and lights, coupled to a cable housing both optical and electrical conductors. A drogue is attached to the casing and the camera pod and drogue are launched through the sidewall of the pipeline via a launch chamber. The camera pod and cable are neutrally buoyant and can be deployed several kilometers along the pipeline for inspecting the pipeline and recovered again into the launch chamber. The advantage of this system over conventional systems is that much longer lengths of pipeline can be inspected from a single location.

REFERENCES:
patent: 3667359 (1972-06-01), Walts et al.
patent: 4107738 (1978-08-01), Van Norman
patent: 4372658 (1983-02-01), O'Conner et al.
patent: 4651558 (1987-03-01), Martin et al.
patent: 4848168 (1989-07-01), Negishi
patent: 4953412 (1990-09-01), Rosenberg et al.

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