Hewing or cutting roll
US7175237B2 · kind B2 · utility
0Cited by
6References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 10, 2005 |
| Grant date | Feb 13, 2007 |
| Priority date | — |
| Expiry date | May 10, 2025 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21C27/24
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
In a hewing or cutting roll including a central roll part and at least one lateral roll part telescopically extractable in the axial direction of the roll, wherein the central roll part and the extractable roll part have each a connection site for a hydraulic cylinder piston unit, the hydraulic cylinder piston unit is arranged to be pivotable relative to the central roll part and/or the extractable roll part about at least two axes and, in particular, universally.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.