Method and apparatus for defect inspection of liquid-filled insulating container
US4125805A · kind A · utility
18Cited by
9References
35Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 7, 1977 |
| Grant date | Nov 14, 1978 |
| Priority date | — |
| Expiry date | Apr 7, 1997 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N27/205
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present invention is a defect inspection method and apparatus for electrically inspecting for the presence of defects in sealed containers of insulating material containing electrically conductive electrolyte or nonelectrolyte fluids, in which the container to be inspected is charged by a high DC voltage to detect the charging current developed and the current neutralizing the charging current for detecting the presence of faults in the container through the magnitudes and the shapes of these currents which are compared with reference values.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.