Light metal feed beam for use on a drill rig
US8393790B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 23, 2006 |
| Grant date | Mar 12, 2013 |
| Priority date | — |
| Expiry date | Nov 8, 2027 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B19/086
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The invention relates to an elongated feed beam (4) for use on a drill rig (1), which feed beam comprises a profiled beam of a light metal or a light metal alloy made from a hollow extruded profile with a substantially rectangular cross section. The profiled beam comprises an upper wall (11), a lower wall (12) and two side walls (13, 14) and at least one pair of external guide beads (8, 9). The individual guide beads (8, 9) of the at least one pair of guide beads are placed on either side of either the upper wall (11) or the lower wall (12) at the locations where said upper or lower wall (11, 12) meets the opposed side walls (13, 14). The guide beads (8, 9) have a substantially prismatic cross section.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.