Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
May 25, 2021
Patent Application Number
16416052
Date Filed
May 17, 2019
Patent Citations Received
Patent Primary Examiner
Patent abstract
A machine for rotary driving screw anchors into underlying ground and related. The machine has a mast with a rotary driver and a mandrel driver oriented on a common axis. The mandrel driver passes a mandrel through the rotary driver and the screw anchor to allow the mandrel to be actuated ahead of the screw anchor while the rotary driver drives the screw anchor into the ground. Alternatively, the mandrel driver may also drive a hammering drill through the screw anchor to clear a path ahead of it through subsurface rocks.
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