Directional drilling machine with multiple pocket rod indexer
US6474931B1 · kind B1 · utility
48Cited by
8References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 23, 2000 |
| Grant date | Nov 5, 2002 |
| Priority date | — |
| Expiry date | Jun 23, 2020 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B19/15
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A horizontal directional drilling machine including a multi-column magazine, a feed structure for indexing rods to and from the magazine, and a lift unit for loading the magazine by lifting rods from the feed structure into the magazine. The lift unit includes a first portion that extends beneath all of the columns of the magazine, and a second portion that projects outward from beneath the magazine. A retaining structure is provided on the second portion for holding a rod on the second portion of the lift unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.