BOREHOLE HYDRAULIC MOTOR ANGULARITY REGULATOR Russian patent published in 2012 - IPC E21B4/02 

FIELD: mining.

SUBSTANCE: invention relates to trilling equipment, particularly, to hydraulic motors at drill string bottom that define design motor angularity angle in inclined and horizontal oil wells. Regulator toothed coupling with internal lengthwise spline slots and teeth on face side directed toward curved tube adapter features inclined face on teeth side. Point in intersection between toothed coupling teeth central lengthwise axis with central lengthwise axis of its internal spline slots is located in coupling face on teeth side. Point of intersection between hollow curved shaft thread lengthwise axis and central lengthwise axis of said hollow tube adapter is located in face plane of toothed coupling on teeth side. Curved tube adapter has bearing segment site in cross-section of which located is the plane with point of intersection between central lengthwise axis of curved tube adapter connecting it with thread of hollow curved shaft and lengthwise central axis of curved hollow adapter thread for joint with spindle section body thread.

EFFECT: higher transmitted torque, longer life, higher reliability.

5 cl, 5 dwg