Coating thickness gauge

Details Coating thickness gauge Coating thickness gauge

1985-10-16

1988-02-02

Haroian, Harry N.

Geometrical instruments

Area integrators

Electrical

33178E, 33178F, G01B 706

Patent

active

047221429

ABSTRACT:
An apparatus for measuring the thickness of a coating on the inside wall of a metallic tubular member comprising: a housing; means for positioning the housing in a predetermined position in relation to the inside wall; a probe comprising means for following the contour of the surface of the coating, and means for sensing the distance between the contour following means and the inside wall as an indication of the thickness of the coating; and means for attaching the probe to the housing such that the probe is positioned in a predetermined position in relation to the inside wall.

REFERENCES:
patent: 2581394 (1952-01-01), Dinger
patent: 2751552 (1956-06-01), Brenner et al.
patent: 2973583 (1961-03-01), Stolle et al.
patent: 3260927 (1966-07-01), Young
patent: 3443211 (1969-05-01), Wood et al.
patent: 3496457 (1970-02-01), Proctor et al.
patent: 4005360 (1977-01-01), Ott
patent: 4330748 (1982-05-01), Holden
patent: 4349780 (1982-09-01), Zuber et al.

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