Portable earth boring machine with steering head
US4013134A · kind A · utility
38Cited by
12References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 20, 1974 |
| Grant date | Mar 22, 1977 |
| Priority date | — |
| Expiry date | May 20, 1994 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21D9/1093
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A portable earth boring machine for the horizontal boring of shafts and the insertion of pipeline casing sections in installations where excavation from the surface is undesirable. The machine is characterized by a steering head positioned at the front of the casings and remotely controlled by the machine operator so as to directionally control the direction of extension of the pipeline as the drilling operation progresses.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.