Miner cutting bit holding apparatus
US4944560A · kind A · utility
30Cited by
3References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 15, 1989 |
| Grant date | Jul 31, 1990 |
| Priority date | — |
| Expiry date | Jun 15, 2009 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21C35/197
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A bit shoulder for attachment of a mining cutting bit to a driven element is provided. The bit holder includes a base member which may be attached to the driven element. The bit holder is provided with a forward body member having forward and rearward surfaces and a bore for receiving therethrough the extended shank of a cutting bit. A rearward member is also attached to the base member and includes an anvil portion having an anvil surface spaced from and facing the rearward surface. A reinforcement member is provided between the rearward member and the rearward surface to rigidify the bit holder.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.