Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Matthew Brown0
William G. Carr0
Date of Patent
September 18, 2007
0Patent Application Number
109836680
Date Filed
November 9, 2004
0Patent Citations Received
Patent Primary Examiner
Patent abstract
A top drive assembly for wellsite operations may include a quill, a swivel including a swivel housing and a swivel bearing therein in which the quill is supported, a drive system for applying torque to the quill, and link arm hangers extending from the swivel housing and formed to accept and retain link arms.
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