Coating thickness gauge
US4722142A · kind A · utility
22Cited by
9References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 16, 1985 |
| Grant date | Feb 2, 1988 |
| Priority date | — |
| Expiry date | Oct 16, 2005 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01B7/34
- WIPO fieldMeasurement
- WIPO sectorInstruments
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.