Boring technique using locate point measurements for boring tool depth determination
US5933008A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 15, 1997 |
| Grant date | Aug 3, 1999 |
| Priority date | — |
| Expiry date | Dec 15, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V3/26
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method is disclosed as part of an overall process in which a boring tool is moved through the ground within a given region along a particular path in an orientation which includes pitch. A locating signal is transmitted from the boring tool which exhibits negative locate points at the surface of the ground. The method establishes the depth of the boring tool at a particular position by identifying a negative locate point corresponding to the particular position of the boring tool along the particular path. Thereafter, a signal strength of the locating signal is measured at the negative locate point. The pitch of the boring tool is then determined at the particular position of the boring tool. Using the measured signal strength and the determined pitch, the depth of the boring tool beneath the surface of the ground is established at the particular point.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.