Locking apparatus for earth boring cutter or stabilizer
US4046206A · kind A · utility
1Cited by
6References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 14, 1976 |
| Grant date | Sep 6, 1977 |
| Priority date | — |
| Expiry date | Apr 14, 1996 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B7/28
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The rolling cutter or stabilizer member of a rotary drill string unit is effectively locked in place by a locking device. The device allows the cutter or stabilizer member to carry radial, tangential and axial loads. A support member includes a surface positioned perpendicular to the resultant of the expected radial load and tangential load. A support shaft includes a slabbed-off surface positioned perpendicular to the resultant of said resultant loads and said axial load.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.