Single solenoid guide system
US7219749B2 · kind B2 · utility
22Cited by
18References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 28, 2004 |
| Grant date | May 22, 2007 |
| Priority date | — |
| Expiry date | Jun 11, 2025 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B47/024
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Measurement of the location and direction of a drill head in a borehole extending beneath an obstacle such as a body of water utilizes a single AC solenoid at a known location but having an unknown orientation. The measurements are used to direct the path of the borehole.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.