Mill blade torque support
US9932793B2 · kind B2 · utility
2Cited by
8References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 28, 2014 |
| Grant date | Apr 3, 2018 |
| Priority date | — |
| Expiry date | Apr 25, 2035 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B23/01
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An example whipstock assembly includes a whipstock providing a ramped surface and a longitudinal groove defined in the ramped surface. A lead mill is coupled to the whipstock with a shear bolt and providing one or more blades, and a bearing support is arranged within the longitudinal groove and provides opposing sidewalls that define a slot configured to receive one of the one or more blades and thereby prevent the lead mill from rotating with respect to the whipstock.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.