Air-pack type contact pressure measuring method
US5922966A · kind A · utility
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2References
16Claims
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Inventor
Key dates
| Filing date | Jan 20, 1998 |
| Grant date | Jul 13, 1999 |
| Priority date | — |
| Expiry date | Jan 20, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01L27/002
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
While a bag (1) made of a thin, soft, and less elastic material is packed with air and is positioned between contacts of soft materials, a thin tube (2) from the bag (1) is lead to the outside of the contacts, and the pressure difference with respect to atmosphere is measured, whereby the contact pressure of an elastic body can be measured. As water depth (A) (mmH.sub.2 O) is measured while the bag (1) is horizontally sank into the water, and as water temperature is changed while the water temperature is measured, the measured level can be calibrated together with thermal influence.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.