Rotary actuator having associated clutch means

Claim 1

IN A MAGNETICALLY OPERATED DEVICE, THE COMBINATION INCLUDING AN ELECTROMAGNET HAVING A FERROMAGNETIC CORE, A SHAFT JOURNALLED FOR ROTATION IN SAID CORE AND PROJECTING OUTWARDLY THEREFROM, A CASING ENCIRCLING SAID ELECTROMAGNET AND SECURED FIXEDLY THERETO, SAID CASING SUPPORTING AN ANNULAR FLANGE AT ONE END THEREOF CONCENTRIC WITH SAID SHAFT, AN ARMATURE MOUNTED FOR ROTATION AND AXIAL MOVEMENT UPON SAID SHAFT, A FIRST APERTURED DISC ENCIRCLING SAID ARMATURE AND HAVING ONE SIDE THEREOF IN PARALLEL OPPOSING RELATION TO SAID ANNULAR FLANGE, SAID FLANGE AND SAID FIRST DISC BEING PROVIDED WITH A PLURALITY OF PAIRS OF OPPOSING INCLINED RECESSES, A PLURALITY OF ANTI-FRICTION ELEMENTS, THERE BEING ONE SAID ELEMENT DISPOSED BETWEEN EACH PAIR OF OPPOSING INCLINED RECESSES, SAID RECESSES BEING SO ARRANGED THAT AN AXIAL MOVEMENT OF SAID FIRST DISC TOWARD SAID FLANGE WILL IMPART A ROTARY MOVEMENT TO SAID FIRST DISC, YIELDING MEANS ENGAGING SAID FIRST DISC AND OPPOSING THE AFORESAID ROTARY MOVEMENT, A SECOND APERTURED DISC MOUNTED UPON SAID ARMATURE IN PARALLEL RELATION TO SAID