MOTOR Russian patent published in 2000 - IPC

FIELD: drilling of directional holes. SUBSTANCE: motor has hollow frame housing multistart mechanism that includes stator placed coaxially and rotor located inside stator, spindle linked with the aid of driving shaft to rotor and located inside spindle case. Frame of motor and spindle case are interjoined by bent piece with thread over its edges. Special feature of invention lies in joining of frame of motor and spindle case to bent piece with the use of threaded enclosures. Rotor and spindle are linked to driving shaft by means of threaded adapters. Internal space of one of threaded enclosures has circular bead in which ring is put, internal diameter of ring has clearance relative to driving shaft that does not exceed external diameter of adapter. Axes of threads on edges of bent piece cross and maximum distance between axes of crossing threads is equal to eccentricity of rotor with reference to stator. EFFECT: simplified separation and installation of bent piece with crossing axes of threads on its edges, enhanced precision of driving holes by way of compensation of side force of drill bit by reactive moment across bent piece, motor and spindle of bent string of hole pipes. 7 dwg