Construction apparatus
US7559377B2 · kind B2 · utility
1Cited by
6References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 9, 2005 |
| Grant date | Jul 14, 2009 |
| Priority date | — |
| Expiry date | Dec 9, 2025 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B15/00
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The invention relates to a construction apparatus comprising a mast, a slide guided in a longitudinally displaceable manner on a front side of the mast, at least one drive chain for the slide arranged longitudinally to the mast and at least one drive pinion supported on the slide in a rotatable and drivable manner, which is engaged with the drive chain. Provision is made for the drive chain and the drive pinion to be arranged in front of the front side of the mast.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.