Invention Grant
- Patent Title: Driven latch mechanism
- Patent Title (中): 驱动闩锁机构
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Application No.: US12898878Application Date: 2010-10-06
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Publication No.: US08794355B2Publication Date: 2014-08-05
- Inventor: Christopher L. Drenth , George Iondov , George Ibrahim
- Applicant: Christopher L. Drenth , George Iondov , George Ibrahim
- Applicant Address: US UT South Jordan
- Assignee: Longyear TM, Inc.
- Current Assignee: Longyear TM, Inc.
- Current Assignee Address: US UT South Jordan
- Agency: Ballard Spahr LLP
- Main IPC: E21B10/02
- IPC: E21B10/02

Abstract:
A core barrel assembly having a driven latch mechanism that 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. Drilling systems including the driven latch mechanism and methods of using the driven latch mechanism are also described.
Public/Granted literature
- US20110079435A1 DRIVEN LATCH MECHANISM Public/Granted day:2011-04-07
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