Analyzing internal pressure of a sealed container using frequency spectra
US5353631A · kind A · utility
34Cited by
12References
12Claims
0Family size
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Key dates
| Filing date | May 29, 1992 |
| Grant date | Oct 11, 1994 |
| Priority date | — |
| Expiry date | May 29, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01M3/24
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The internal pressure of a sealed container is characterized by tapping to vibrate a wall of the container, and then basing the characterization of the internal pressure on a frequency spectrum of the vibration and stored data measured from vibrating other sealed containers. The stored data is generated by vibrating a series of tests controllers having different, known internal pressures.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.