Underwater displacement probe
US4140991A · kind A · utility
6Cited by
1References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 15, 1977 |
| Grant date | Feb 20, 1979 |
| Priority date | — |
| Expiry date | Aug 15, 1997 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B13/02
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
This device is used in an underwater environment to determine the exact ltion of an object or the displacement of an object from an equilibrium position within a relatively small confined area. An alternating electric current is transmitted through the water, thereby creating an electric field surrounding the object. A probe placed on the object and connected to a voltage amplifier measures the electric potential of the probe and the object with respect to the potential of one of the electrodes. The position or the displacement of the object is then determined from its measured electric potential.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.