Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Larry V. Cooper0
Date of Patent
May 15, 2007
0Patent Application Number
104161900
Date Filed
November 9, 2001
0Patent Primary Examiner
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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