Method of checking the coating of a metal surface and device for

Details Method of checking the coating of a metal surface and device for Method of checking the coating of a metal surface and device for

1982-07-23

1985-09-17

Smith, Alfred E.

Radiant energy

Invisible radiant energy responsive electric signalling

With means to inspect passive solid objects

250372, 356237, 356448, G01J 142, G01N 2190

Patent

active

045422966

ABSTRACT:
The invention relates to a method of checking the coating of a metal surface, in which the surface to be checked is exposed to electro-magnetic radiation and the amount of reflected radiation is measured and compared with the amount incident to the surface exposed.
The invention also relates to a device for carrying out such method.

REFERENCES:
patent: 2185690 (1940-01-01), Lane
patent: 2781477 (1957-02-01), Jenner, Jr.
patent: 3128879 (1964-04-01), Birchall
patent: 3395278 (1968-07-01), McDivitt
patent: 3656856 (1972-04-01), Katz et al.
patent: 4017194 (1977-04-01), Conroy et al.
patent: 4029958 (1977-06-01), Wright
patent: 4040750 (1977-08-01), Zwiener
patent: 4266878 (1981-05-01), Auer

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