Patent ID: 9410390
Filing Date: 2016-08-09
CPC Classification: E21B

Claim Text:
1. A device for drilling through a stratum, comprising a body ( 5 ); a suspension ( 1 ) in the form of a line of pipes, a cutting rod ( 9 ) that is accommodated in a longitudinally oriented cutout ( 15 ) of the body ( 5 ) between a control bushing ( 7 ) and a bushing ( 11 ) and supported rotatably in a ball-and-socket joint ( 8 ); a pivot point ( 2 ) in the form of a hydraulic motor; an in-feed point of the cutting rod ( 9 ), which has the ball-and-socket joint ( 8 ) in the form of a ball truncated on a side ( 17 ), that is braced on the bushing ( 11 ) and cooperates via control elements ( 13 ) with the control bushing ( 7 ); an anchor cut ( 3 ) in the form of a hydraulic anchor; a rotation transmission point in the form of a link mechanism ( 6 ); a feedback point in the form of a constricting element ( 4 ) that is located in an annular gap between the control bushing ( 7 ) and the pivot point shaft; a pressure point ( 10 ) toward the borehole wall in the form of a spring plate ( 14 ); a rotary body, which is located in the body ( 5 ) and cutout ( 16 ) of the control bushing ( 7 ) opposite the longitudinally oriented cutout ( 15 ) of the body ( 5 ), wherein, the control elements (