Electromagnetic transducer device

Claim 1

A COMBINED PICK-OFF AND TORQUING DEVICE COMPRISING PICK-OFF MEANS HAVING AN I-SHAPED CORE OF MAGNETIC MATERIAL, A.C. EXCITATION COILS WOUND ON SAID CORE, AND FIRST AND SECOND OUTPUT COILS COOPERATIVE WITH FIRST AND SECOND EXTREMITIES RESPECTIVELY OF SAID CORE, TORQUING MEANS HAVING FIRST AND SECOND ARCUATE-SHAPED PERMANENT MAGNETS AND FIRST AND SECOND D.C. EXCITATION INPUT COILS COOPERATIVE WITH THE EXTREMITIES OF SAID FIRST AND SECOND MAGNETS RESPECTIVELY, THE EXTREMITIES OF SAID CORE AND SAID MAGNETS BEING SYMMETRICALLY DISPOSED AND CURVED TO THEREBY DEFINE A CIRCLE, A COMMON STATIONARY NON-MAGNETIC SUPPORT MEMBER FOR SUPPORTING SAID CORE AND SAID MAGNETS, SAID SUPPORT MEMBER HAVING A LONGITUDINAL AXIS, A COMMON CIRCULAR MAGNETIC FLUX RETURN PATH MEMBER FOR PROVIDING A MAGNETIC FLUX RETURN PATH FOR SAID PICK-OFF MEANS AND SAID TORQUING MEANS, SAID FLUX RETURN PATH MEMBER BEING IN SPACED RELATION WITH RESPECT TO SAID CORE AND SAID MAGNETS THEREBY DEFINING A CIRCULAR AIR GAP THEREBETWEEN, AND A COMMON CIRCULAR ROTATABLE ELEMENT DISPOSED WITHIN SAID AIR GAP SUPPORTING SAID PICK-OFF OUTPUT COILS AND SAID TORQUER INPUT COILS FOR ROTATION RELATIVE TO SAID CORE AND SAID MAGNETS AROUND SAID LONGITUDINAL AXIS, SAID ROTATABLE MAGNETIC ELEMENT AND SAID FLUX RETURN PATH MEMBER BEING COAXIALLY DISPOSED WITH RESPECT TO SAID LONGITUDINAL AXIS.