Disc cutters for rock working machines
US4793427A · kind A · utility
13Cited by
6References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 27, 1987 |
| Grant date | Dec 27, 1988 |
| Priority date | — |
| Expiry date | Jan 27, 2007 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B10/12
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A hardmetal ring is a size for size or low interference fit on the body of a disc cutter of a rock working machine, such as a boxhole borer. In one embodiment the ring is gable shaped and clamped between a fixed annular shoulder and a detachable annular shoulder. In another embodiment the ring is triangular in section and two annular shoulders resting on it and inclined surfaces on the body clamp the ring to the body.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.