Bit arrangement for a cutting tool
US4247150A · kind A · utility
89Cited by
4References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 17, 1979 |
| Grant date | Jan 27, 1981 |
| Priority date | — |
| Expiry date | Apr 17, 1999 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21C35/188
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The rotary-shaft bit (7) inserted in a bushing (3) fixedly mounted, encloses by means of a hollow-cylindrical extension (9) an annular extension (5) of the bushing (3) and projecting in axial direction of said bushing (3), and in this manner is supported closer to the tip of the bit (8) in order to absorb transverse forces, noting that the front surface (14) of the hollow-cylindrical extension (9) of the bit (7) can be supported on the flange (4) of the bushing (3) (FIG. 1).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.