Rock cutting head
US6158818A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 5, 1997 |
| Grant date | Dec 12, 2000 |
| Priority date | — |
| Expiry date | Nov 5, 2017 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21D9/1086
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Rock cutting head comprising a one-part steel housing attachable to a working machine lug, an electric or hydro motor being attached to the rear portion of the housing and two uni-axial similar cutting drums being provided at its front portion, the rear housing portion, in which a drive pinion directly or indirectly connected to the motor is provided, being terminated toward the lug with a widened connection plate, its front portion supporting outer bearing hubs, in which the shafts of the two cutting drums uniformly connected to a middle drive spur-toothed wheel are provided and wherein a larger intermediate wheel is provided in the housing between drive pinion and drive spur-toothed wheel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.