Method for locating buried pipes and cables
US7825647B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 8, 2009 |
| Grant date | Nov 2, 2010 |
| Priority date | — |
| Expiry date | Jun 8, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V3/081
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method of locating a buried conductor such as a pipe uses an electronic transmitter to generate a signal having a predetermined frequency with is applied to the pipe via an alligator clip or other appropriate connector. A ground connection to the transmitter is established by connecting another alligator clip or other appropriate connector to a grounding sheet made of chain mail or metal cloth. A electrolyte solution is poured on the grounding sheet and/or around a portion of the surface region adjacent the grounding sheet. The signal that is re-radiated by the buried pipe is detected with a man portable locator which determines the location of the buried pipe and displays the same to a user.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.