ELECTRIC DRIVE Russian patent published in 1997 - IPC

FIELD: electric engineering. SUBSTANCE: device is designed as joined electric motor, screw converter of rotation to movement, protection jacket 9 of working screw 7 and detector 15 for absolute position of screw 7, which has pin 8 which is located inside threaded-joint hole 12 of protection jacket 9 which is mounted in bearings 10 and 11. Protection jacket 9 has cam 13 which contacts to plunger 14 of position detector 15. When rotor 2 rotates together with hollow shaft 3 and nut 6, working screw 7 with pin moves in either direction. Axial movement of working screw 7 leads to rotation of protection jacket 9 with cam 13 by some angle. Rotation of cam 13 results in movement of adjacent plunger 14 of position detector 15. This results in alternation of its parameter. EFFECT: increased functional capabilities. 2 dwg