Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
August 31, 2010
Patent Application Number
12077602
Date Filed
April 22, 2008
Patent Primary Examiner
Patent abstract
A drive assembly for powering a rotating rod string (14) passing through a surface wellhead (18) includes a torque conveying housing (32) containing a radially outer member supporting a plurality of outer member magnets and rotated by a motor. A radially inner member (48) supports a plurality of inner member magnets and is rotatable within the outer member, with magnetic forces between the plurality of outer member magnets and the plurality of inner member magnets rotating the inner member magnets and thus the radially inner member.
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