Automatic drilling system

Boring or penetrating the earth – Automatic control – Of advance or applied tool weight

Reexamination Certificate

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Details

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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