Steerable boring machine
US5924500A · kind A · utility
6Cited by
12References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 21, 1997 |
| Grant date | Jul 20, 1999 |
| Priority date | — |
| Expiry date | May 21, 2017 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B7/064
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
With a boring machine having a multistrand rod assembly (3) for producing boreholes in the ground, comprising a rotatable inner rod (29), an outer rod (19), at least one steering and digging tool (5; 33, 35, 36) driven by the inner rod and having an axis of rotation (22) inclined at an angle of for example 90.degree. to the axis of the rod (23), and a linear drive for the rod assembly (3, 19, 20), it is possible to perform both straight-ahead boring and, if only the steering and digging tool is driven, curve boring.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.