Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Brett Gregory Wallihan0
Lawrence E. Wells0
Date of Patent
August 31, 2010
0Patent Application Number
118234630
Date Filed
June 27, 2007
0Patent Citations Received
Patent Primary Examiner
Patent abstract
A bail support and a top drive system for an oilfield drill rig. The top drive system includes a drive apparatus, and the bails have bodies with upper head portions and two spaced-apart legs. Each leg includes an upper leg portion and a lower leg portion. The upper leg portions are non-parallel to each other and extend from the head portion at an angle to a centerline of the bail. Each lower leg portion extends down from its corresponding upper leg portion in a reverse bend.
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