Stakedown assembly for a horizontal directional drill
US6814161B1 · kind B1 · utility
4Cited by
4References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 10, 2000 |
| Grant date | Nov 9, 2004 |
| Priority date | — |
| Expiry date | Feb 10, 2020 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B7/046
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A stakedown assembly for a horizontal directional drill that multiplies the travel of a hydraulic cylinder so that the drive head travels twice the distance of the hydraulic cylinder travel. A gear pinion is pivotally attached to a top end of the hydraulic cylinder. A first gear rack is fixedly attached to a tower, and a second gear rack is fixedly attached to a drive head. The gear pinion floats between the two gear racks, thus, producing multiplication when the hydraulic cylinder is actuated. This allows the use of a shorter hydraulic cylinder and results in a smaller overall stakedown assembly height.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.