Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
December 30, 2008
Patent Application Number
11985713
Date Filed
November 15, 2007
Patent Citations Received
Patent Primary Examiner
Patent abstract
A rig for drilling wells or holes at virtually any angle, from nearly horizontal to vertical, has a trailer mounted derrick which can be tilted to a desired angle, a top drive unit slidably mounted within such derrick and a hydraulic jacking apparatus. An automated pipe handling apparatus permits efficient transfer of pipe sections from the derrick to a truck, pipe rack or other storage facility.
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