Glass surface coating detector
US5132631A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 21, 1990 |
| Grant date | Jul 21, 1992 |
| Priority date | — |
| Expiry date | Mar 21, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01B7/085
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Apparatus and method for detecting the presence and surface location of or the absence of an electrically conductive solar coating on a pane of glass. A capacitor is formed by placing a probe against one surface of the glass. The value of the capacitor is determined by the presence or absence of a conductive coating on the glass and by the location of any coating relative to the probe. Variations in the value of the capacitor are detected to selectively illuminate lights which indicate either the absence of a surface coating, the presence of a surface coating on a near surface or pane of the glass or the presence of a surface coating on a far surface or pane of the glass.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.