Invention Grant
- Patent Title: Driven latch mechanism
- Patent Title (中): 驱动闩锁机构
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Application No.: US14341128Application Date: 2014-07-25
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Publication No.: US09328608B2Publication Date: 2016-05-03
- Inventor: Christopher L. Drenth , George Iondov , George Ibrahim
- Applicant: LONGYEAR TM, INC.
- Applicant Address: US UT Salt Lake City
- Assignee: Longyear TM, Inc.
- Current Assignee: Longyear TM, Inc.
- Current Assignee Address: US UT Salt Lake City
- Agency: Ballard Spahr LLP
- Main IPC: E21B49/02
- IPC: E21B49/02 ; E21B25/02

Abstract:
Implementations include a core barrel assembly having a driven latch mechanism. The driven latch mechanism can lock the core barrel assembly axially and rotationally relative to a drill string. The driven latch mechanism can include a plurality of wedge members positioned on a plurality of driving surfaces. Rotation of the drill string can cause the plurality of wedge members to wedge between an inner diameter of the drill string and the plurality of driving surfaces, thereby rotationally locking the core barrel assembly relative to the drill string. Implementations of the present invention also include drilling systems including such driven latch mechanisms, and methods of retrieving a core sample using such drilling systems.
Public/Granted literature
- US20140332279A1 DRIVEN LATCH MECHANISM Public/Granted day:2014-11-13
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