Apparatus for measuring excess pore water pressure
US4150578A · kind A · utility
7Cited by
3References
9Claims
0Family size
Inventor
Key dates
| Filing date | Jun 28, 1978 |
| Grant date | Apr 24, 1979 |
| Priority date | — |
| Expiry date | Jun 28, 1998 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N33/24
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An elongated tubular housing has differential pressure transducers at spaced points therealong and electrically insulated therefrom by a mounting means. Each mounting means has a diaphragm exposed to pore water pressure and a diaphragm exposed to hydrostatic pressure at its location. The opposite sides of a third diaphragm are responsive to the pore water pressure and hydrostatic pressure. Conductors are provided on opposite sides of the third diaphragm to measure differential conductance which is analogous to excess pore water pressure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.