Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
David J. Power0
Gerhard P. Glaser0
Date of Patent
June 13, 2006
0Patent Application Number
106672960
Date Filed
September 17, 2003
0Patent Citations Received
Patent Primary Examiner
Patent abstract
An automatic drilling system is disclosed which includes an electric servo motor operatively coupled to a winch brake control, a servo controller operatively coupled to the servo motor, and a drum position encoder rotationally coupled to a winch drum. The controller is adapted to operate the servo motor in response to measurements of position made by the encoder so that a selected rate of rotation of the drum is maintained.
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