Bit holder block with non-rotating wear sleeve
US8061783B2 · kind B2 · utility
23Cited by
26References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 14, 2008 |
| Grant date | Nov 22, 2011 |
| Priority date | — |
| Expiry date | Apr 7, 2029 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21C35/18
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A block and non-rotating wear sleeve for holding a cutting tool used with mining and construction is disclosed. A key is used to intersect with notches in the wear sleeve and block at a rear face of the wear sleeve and block to prevent rotational movement between the wear sleeve and block. Locating the key and notches at the rear face provides an easily manufactured anti-rotation means which is also sheltered from the most of the abrasion experienced by the block and wear sleeve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.