Roof drill bit, roof drill bit body and hard cutting insert for roof drill bit
US8002054B2 · kind B2 · utility
11Cited by
20References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 26, 2009 |
| Grant date | Aug 23, 2011 |
| Priority date | — |
| Expiry date | Jan 26, 2029 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23C2230/08
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A roof drill bit has an elongate roof drill bit body, which has a forward end and a rearward end. The roof drill bit body contains a slot at the forward end. The roof drill bit body contains a dust port wherein the dust port has a central longitudinal dust axis. The roof drill bit further has a hard insert received within the slot wherein the hard insert has a leading surface. The leading surface of the hard insert is rotationally forward of the central longitudinal dust axis of the dust port.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.