Patent ID: 9446455
Filing Date: 2016-09-20
CPC Classification: B23B,E03F,E21B,F16L,Y10T

Claim Text:
1. A drilling apparatus for drilling from inside a conduit having at least one service entrance, the apparatus comprising: a robot having an extendible arm; a motor mounted onto the extendible arm of the robot an elongated flexible shaft having a first end and a second end, the first end of the elongated flexible shaft connected to the motor; a rotatable drill head connected to the second end of the elongated flexible shaft; the elongated flexible shaft driven by the motor to impart rotational motion to the drill head; the extendible arm of the robot extending out of the robot to move the motor away from the robot thereby pushing the elongated flexible shaft and extending the rotatable drill head inside the at least one service entrance and the extendible arm of the robot retracting back into the robot to move the motor back towards the robot thereby pulling the elongated flexible shaft to retract the rotatable drill head out of the at least one service entrance.