Excavating tool cutting insert
US4938538A · kind A · utility
23Cited by
22References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 6, 1984 |
| Grant date | Jul 3, 1990 |
| Priority date | — |
| Expiry date | Mar 6, 2004 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21C35/1837
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The invention relates to a tool for breaking or excavating hard material, such as asphalt. The tool comprises a cutting insert (11) secured to a tool body (10). For purposes of maintaining the required cutting force low while ensuring that the risk is low that the cutting insert (11) will get loose the cutting insert (11) is provided with a concave portion (17.sup.1) between the tip portion (12) of the cutting insert and a rear shoulder (13) thereon.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.