Detection of defects in protective barriers
US6204669A · kind A · utility
6Cited by
17References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 2, 1998 |
| Grant date | Mar 20, 2001 |
| Priority date | — |
| Expiry date | Jul 2, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01M3/40
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention includes apparatus and method for detecting defects in various barrier materials including surgical gloves and food packaging. Voltage is applied across electrodes and a barrier material and the voltage measured and compared with voltage control measurements for the same barrier material without a defect. Sensitivity of measurements is increased by adjusting partial pressure across the barrier material which is subjected to the passage of an ionized gas detected by suitable instrumentation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.