Rotatable cutting bit for a mining machine
US4765686A · kind A · utility
104Cited by
12References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 1, 1987 |
| Grant date | Aug 23, 1988 |
| Priority date | — |
| Expiry date | Oct 1, 2007 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21C35/187
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
In a rotatable cutting bit of the type for delivering water under pressure to the work area being cut, the head portion includes an annular recess including a plurality of outlet ports facing forwardly and protected from the rearward flow of material being cut.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.