Cutting tool wear sleeves and retention apparatuses
US7300114B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Aug 15, 2006 |
| Grant date | Nov 27, 2007 |
| Priority date | — |
| Expiry date | Aug 15, 2026 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21C35/197
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Cutting tool assemblies and wear and retention sleeves. The assemblies may include a support block that has a sleeve-receiving hole therethrough and a cutting tool that has an elongated shank. Various configurations of sleeves are disclosed for supporting the elongated shank of the cutting bit in the support block. Such sleeve embodiments may be provided with a plurality of axially extending overlapping notches to establish segments of various degrees of interference fit between the sleeve and the support block when seated in the sleeve-receiving hole of the support block. Some sleeve embodiments are configured to permit the shank of a cutting bit to freely rotate therein. Other sleeve embodiments are configured to prevent rotation of the cutting bit shank when inserted therein.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.