Borescope drill pipe and light guide sleeve

Details Borescope drill pipe and light guide sleeve Borescope drill pipe and light guide sleeve

1994-02-08

1995-09-12

Fields, Carolyn E.

Radiant energy

Luminophor irradiation

With ultraviolet source

2504581, 356241, G01N 2164

Patent

active

054499194

ABSTRACT:
A borescope for inspecting the inside of bores such as drill pipe bores includes an elongate shaft to extend into the pipe. The shaft has an optical eye for directing incident light from a light source toward an inside surface of the bore and a receptor to receive emitted light therefrom. The shaft may be rotated eccentrically about the bore axis so that the distance of the optical eye from a sector of the interior surface to be inspected is always less than the radius of the bore.

REFERENCES:
patent: 3294085 (1966-12-01), Wallace
patent: 4241729 (1980-12-01), Aoshiro
patent: 4273110 (1981-06-01), Groux
patent: 4657387 (1987-04-01), Heising
patent: 4732474 (1988-03-01), Chikama
patent: 4967092 (1990-10-01), Fraignier
patent: 5088819 (1992-02-01), Storz
patent: 5133035 (1992-07-01), Hicks
patent: 5202758 (1993-04-01), Tamburrino

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