Apparatus for making tunnels in the ground and for laying supply lines
US4904116A · kind A · utility
4Cited by
4References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 23, 1989 |
| Grant date | Feb 27, 1990 |
| Priority date | — |
| Expiry date | Feb 23, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S37/904
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An apparatus for making tunnels and for laying supply lines in the ground comprises an earth displacing machine which is guided by a sword projecting out of the ground to allow the attachment of a power drive engaging the free end of the sword, and makes it possible to lay the supply lines accurately over long stretches, in particular along walls or the line of roadways or paths or the like.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.