Invention Grant
- Patent Title: Tubular handling device
- Patent Title (中): 管状处理装置
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Application No.: US11619946Application Date: 2007-01-04
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Publication No.: US07552764B2Publication Date: 2009-06-30
- Inventor: Craig Weems , Stanislaw Casimir Sulima , Brian Ellis
- Applicant: Craig Weems , Stanislaw Casimir Sulima , Brian Ellis
- Applicant Address: BM Hamilton
- Assignee: Nabors Global Holdings, Ltd.
- Current Assignee: Nabors Global Holdings, Ltd.
- Current Assignee Address: BM Hamilton
- Agency: Haynes and Boone, LLP
- Main IPC: E21B19/00
- IPC: E21B19/00

Abstract:
A tubular handling apparatus comprising a slotted member having a plurality of elongated slots each extending in a direction, a recessed member slidably coupled to the slotted member and having a plurality of recesses each tapered in the direction from a shallow end to a deep end, and a plurality of rolling members each retained between one of the recesses and one of the slots, wherein each rolling member partially extends through the adjacent slot when located in the shallow end of the recess, and wherein each rolling member retracts within an outer perimeter of the slotted member when located in a deep end of the recess. The apparatus may further comprise a plurality of biasing elements each biasing a corresponding one of the rolling members towards the shallow end of the corresponding recess.
Public/Granted literature
- US20080164693A1 TUBULAR HANDLING DEVICE Public/Granted day:2008-07-10
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