Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
March 2, 2010
Patent Application Number
11185281
Date Filed
July 20, 2005
Patent Citations Received
Patent Primary Examiner
Patent abstract
A top drive system for drilling with casing includes a casing feeder and a torque head. In one embodiment, the casing feeder is adapted to position a casing for engagement with the torque head. The casing feeder includes a pair of conveying arms for engagement with the casing. Each conveying arm may be raised or lowered by a cylinder. The conveying arms are equipped with a motor driven roller for engaging and lifting the casing. The casing feeder may also be equipped with a counting apparatus to determine the positioning of the casing in the torque head.
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