Excavating machine
US4005905A · kind A · utility
26Cited by
7References
50Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 21, 1974 |
| Grant date | Feb 1, 1977 |
| Priority date | — |
| Expiry date | Aug 21, 1994 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21D9/106
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A machine for excavating underground galleries, comprising a frame displaceable within a gallery, an arm pivotally connected to said frame, means for adjusting the orientation of said arm in a plurality of directions, said arm having a rotary tool carrier provided with cutting tools distributed over the periphery thereof located to operate in a plane perpendicular to the direction of the arm, the machine having means enabling the pivotal connection between the arm and the frame to occupy two distinct alternative positions, in each of which positions the means supporting said pivotal connection can be immobilized.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.