Boring or penetrating the earth – Automatic control – Of advance or applied tool weight
Reexamination Certificate
2006-06-13
2006-06-13
Neuder, William (Department: 3672)
Boring or penetrating the earth
Automatic control
Of advance or applied tool weight
C175S048000
Reexamination Certificate
active
07059427
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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Glaser Gerhard P.
Power David J.
Coy Nicole
Fagin Richard A.
Jobe Jonathan E.
Neuder William
Noble Drilling Services Inc.
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