Underground horizontal boring apparatus
US6736219B1 · kind B1 · utility
Inventor
Key dates
| Filing date | Dec 10, 2002 |
| Grant date | May 18, 2004 |
| Priority date | — |
| Expiry date | Dec 10, 2022 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B7/046
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An underground horizontal boring apparatus includes a framework having a pair of guide tracks and a carriage connected to the framework for movement along the tracks. The apparatus includes a mechanism for moving the carriage in forward or backward directions along the guide tracks. A drill assembly is mounted to the carriage having a drill motor for rotation of a drill rod releasably coupled thereto. A clamp assembly is mounted to one end of the framework and includes a clamp for selectively gripping the drill rod so as to rotatably release the drill rod from the drill motor when the drill motor is operated in a reverse direction. Upon release, the carriage may be moved to a start position, another drill rod may be attached to the drill motor and first rod, and boring resumed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.