Third-party detection around pipelines
US4953144A · kind A · utility
11Cited by
6References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 11, 1989 |
| Grant date | Aug 28, 1990 |
| Priority date | — |
| Expiry date | Sep 11, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B13/1663
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Geophones are placed around pipelines to detect third parties, e.g., heavy construction vehicles. Associated computer equipment acquires data from the geophones and discriminates for the frequencies associated with heavy construction vehicles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.