Technique for providing an underground tunnel utilizing a powered boring device
US4821815A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 22, 1986 |
| Grant date | Apr 18, 1989 |
| Priority date | — |
| Expiry date | May 22, 2006 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02G1/08
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A technique for providing a continuous underground tunnel between first and second spaced-apart points and for installing new cable, pipe or conduit is disclosed herein. This technique utilizes a boring device including means for boring through soil and a thrust conduit which pushes the boring device through the soil from a first starting point to a second end point as the device bores through the soil, whereby to form a tunnel between the two points. Thereafter, the cable to be installed within the tunnel is attached to the front end of the boring device and the latter is pulled back through the tunnel to its starting point by means of the thrust cable, thereby automatically pulling the new cable in place.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.