US Patent 7217056 Knuckle-swivel for drilling wells
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Patent Inventor Names
Larry V. Cooper0
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Patent abstract
A knuckle-swivel (10) is used with well drilling equipment for protecting helical wound line 62, which may be wire rope, cable and/or strand, against torsional forces and also providing for angular displacement of sinker bars or other tools during wireline strip over operations to minimize interference with rig equipment (80) when pulling pipe or tools 64 from a well head.
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US Patent 07217056 Knuckle-swivel for drilling wells US Patent 7217056 Knuckle-swivel for drilling wells
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Patent Number
072170560
Patent Number
72170560
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Patent Jurisdiction
Patent Number
072170560
Date of Patent
May 15, 2007
0Patent Application Number
104161900
Date Filed
November 9, 2001
0Official Website
Patent Primary Examiner
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US Patent 07217056 Knuckle-swivel for drilling wells
Infobox
Is a
Patent jurisdiction
Patent number
07217056
Date of patent
May 15, 2007
Patent application number
10416190
Date Filed
November 9, 2001
Patent primary examiner
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