Device for detecting inclination of boring head of boring tool
US5363926A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 3, 1994 |
| Grant date | Nov 15, 1994 |
| Priority date | — |
| Expiry date | Jan 3, 2014 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B47/0232
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A boring head of a boring tool for boring the ground includes a device for detecting inclination of the boring head therein. The device includes a roll angle sensor and a pitch angle sensor. The roll angle sensor detects an angular position of the boring head in a roll direction and outputs a roll angle detecting signal. The pitch angle sensor detects an angular position of the boring head in a pitch direction outputs a pitch angle detecting signal. A signal modulating circuit converts the roll angle detecting signal and the pitch angle detecting signal into a serial signal and modulates the serial signal. An output circuit receives the modulated serial signal and outputs a magnetic field which is receivable by a receiver located on the ground and which permits determination of the roll angle and the pitch angle of the boring head.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.