VALVE-TYPE ELECTRIC MOTOR Russian patent published in 1995 - IPC

FIELD: electrical engineering. SUBSTANCE: electric motor has frame built up of post and end brackets arranged perpendicular to the former. Each bracket has cylindrical space whose axis is perpendicular to post. Space accommodates self-aligning spherical bearing, pusher, and compression spring. Pusher surface mates with bearing surface. Shaft is mounted in bearings and carries pulley and rotor built up of two toroidal magnets mounted on magnetic circuits. Stator board with stator winding coils is placed in gap between magnets. Board has cut from its one end to central hole. Ends of plates formed by cut are secured on base and opposite end of board is fixed in screen slots. Electric motor may be furnished with tachogenerator made in the form of two toroidal coils placed on board and spaced 180 el. deg. apart; fastening screws made of nonretentive material function as their magnetic circuits. EFFECT: simplified design, reduced size of motor. 2 cl, 2 dwg