Cutting tool having hard tip with lobes
US5324098A · kind A · utility
32Cited by
13References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 17, 1992 |
| Grant date | Jun 28, 1994 |
| Priority date | — |
| Expiry date | Dec 17, 2012 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21C35/1837
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A cutting tool for use in excavating an earth formation comprising an elongate tool body having a hard tip being affixed to the forward end thereof. The hard tip has a plurality of integral, coaxial sections including an integral ribbed section which presents a plurality of longitudinal ribs about the circumference thereof. The tip further includes an integral lobed base section which presents a plurality of radially extending lobes. An integral transition region provides a transition between the ribbed section and the base section.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.