Electromechanical disc oscillation means for a photoelectric sun sensor device

Claim 1

IN A SUN SENSOR DEVICE, THE COMBINATION COMPRISING A CASING, A PLURALITY OF PHOTODETECTOR ELEMENTS MOUNTED THEREIN SO AS TO RESPOND TO LIGHT RAYS FROM THE SUN, A DISC OSCILLATABLY MOUNTED IN THE CASING WITH SAID OSCILLATABLE DISC INCLUDING A PLURALITY OF LIGHT PASSAGE MEANS, AND THE IMPROVEMENT COMPRISING A PAIR OF BAR MAGNETS CARRIED IN BALANCED RELATION BY THE DISC AT POINTS ONE HUNDRED AND EIGHTY DEGREES APART, A MOTOR COIL ANGULARLY ACTUATING ONE OF SAID PAIR OF BAR MAGNETS CAUSING OSCILLATION OF THE DISC, A TACHOMETER COIL, SAID TACHOMETER COIL RESPONDING TO MOVEMENT OF SAID OTHER BAR MAGNET RELATIVE TO SAID TACHOMETER COIL, SAID OTHER BAR MAGNET BEING EFFECTIVE UPON ACTUATION OF THE DISC BY THE MOTOR COIL TO INDUCE A PULSATING ALTERNATING CURRENT SIGNAL IN THE TACHOMETER COIL, ELECTRICAL CIRCUIT MEANS FOR ENERGIZING THE MOTOR COIL, AND MEANS FOR ELECTRICALLY COUPLING THE PULSATING ALTERNATING CURRENT SIGNAL INTO THE CIRCUIT MEANS TO CONTROL THE ENERGIZATION OF THE MOTOR COIL AND THEREBY EFFECTIVELY CONTROLLING THE OSCILLATION OF THE DISC BY THE MOTOR COIL.