Gammanetric thickness measuring apparatus

Details Gammanetric thickness measuring apparatus Gammanetric thickness measuring apparatus

1982-01-21

1984-03-06

Smith, Alfred E.

Radiant energy

Invisible radiant energy responsive electric signalling

With means to inspect passive solid objects

G01M 2300

Patent

active

044356439

ABSTRACT:
An apparatus for the nondestructive determination of the thickness of an article, e.g. a rolled steel product such as a beam, comprises a plurality of radiation sources mounted in a sectoral body rotatable about an axis such that the center of gravity of the body is offset from this axis. The body is received within a massive shielding structure so that it can be swung into a trough-like recess formed in the latter when not in use and can be swung out of this recess to bring the respective radiation sources into registry with a window formed in a cover overlying the trough-shaped body and defining a space which is filled with a cooling and absorbing fluid. The device is provided between conveyor rollers of a rolling mill line.

REFERENCES:
patent: 2772361 (1956-11-01), Hiestand
patent: 3808437 (1974-04-01), Miyagawa et al.
patent: 4370555 (1983-01-01), Brethon et al.

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