ELECTROMECHANICAL DRIVE Russian patent published in 2000 - IPC

FIELD: drives for hunting antennas and the like. SUBSTANCE: drive has base-mounted working-element drive case, electric motor and position sensor with ring-shaped rotors, screw pair incorporating hub with rollers and bent lead screw. Motor and position sensor stators are rigidly fixed within drive case and their rotors are fixed on hub coupled with base through bearings. Rollers are installed inside hub in pairs at 90 C to each other; lead screw is radially bent to form sector. Center of lead-screw radius is aligned with center of revolution of working element; common pins of roller pairs are loosely arranged within hub by means of threaded bushings. EFFECT: reduced mass and size, improved precision and stiffness of drive. 2 dwg