Reaming tool
US4618009A · kind A · utility
99Cited by
15References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 8, 1984 |
| Grant date | Oct 21, 1986 |
| Priority date | — |
| Expiry date | Aug 8, 2004 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B10/322
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A narrow diameter reaming tool can ream a hole which is up to ten times the diameter of the tool. The cutting arms of the tool are of a type such that if there is an excessive load on an arm, the arm will fracture rather than bend.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.