Drill tool shaft-to-housing locking device
US7234544B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 28, 2004 |
| Grant date | Jun 26, 2007 |
| Priority date | — |
| Expiry date | Jun 28, 2024 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B7/067
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
In a tool having an inner member supported within an outer member, wherein the tool defines a longitudinal axis, a device is provided for preventing relative rotation of the inner member and the outer member. The device is comprised of a locking mechanism and a locking actuator. The locking mechanism is positioned between the inner member and the outer member, wherein the locking mechanism is movable longitudinally between a first locking mechanism position in which the inner member and the outer member are disengaged and capable of relative rotation and a second locking mechanism position in which the inner member and the outer member are engaged and not capable of relative rotation. The locking actuator causes the locking mechanism to move longitudinally.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.