Magnetic servosystem

Claim 1

A MAGNETIC LEVITATION SYSTEM COMPRISING: A MAGNETIC MEMBER POSITIONED IN AN EQUILIBRIUM CONDITION BUT DISPLACEABLE THEREFROM AT LEAST IN A FIRST DIRECTION, MEANS FOR PRODUCING MAGNETIC FLUX, STATIONARY MAGNETIC CIRCUIT MEANS INCORPORATING SAID FLUX PRODUCING MEANS AND SAID MAGNETIC MEMBER AND DEFINING THEREWITH FOR SAID FLUX A FIRST FLUX PATH INCLUDING AT LEAST FIRST AND SECOND SERIALLY CONNECTED AIR GAPS, THE GAP SUM OF WHICH IS MAINTAINED SUBSTANTIALLY CONSTANT REGARDLESS OF DISPLACEMENT OF SAID MAGNETIC MEMBER, AND SERVOMAGNETIC SHUNT CIRCUIT MEANS INTEGRALLY CONNECTED TO SAID MAGNETIC MEMBER AND FORMING FOR SAID FLUX AND WITH SAID STATIONARY MAGNETIC CIRCUIT MEANS A SECOND FLUX PATH THROUGH AT LEAST THIRD AND FOURTH SERIALLY CONNECTED AIR GAPS SO THAT AT LEAST THE SAID THIRD GAP HAS A VARIABLE WIDTH EXTENDING IN SAID FIRST DIRECTION FOR MODIFYING THE DISTRIBUTION OF FLUX BETWEEN SAID FIRST AND SECOND PATHS WHEN SAID MAGNETIC MEMBER IS DISPLACED IN SAID FIRST DIRECTION FROM SAID EQUILIBRIUM CONDITION AND CHANGES SAID THIRD AIR GAP WHILE THE SUM OF SAID FIRST AND SECOND AIR GAPS REMAINS CONSTANT AS AFORESAID, TO CAUSE THE SAID DISPLACEMENT OF SAID MAGNETIC MEMBER TO BE ELIMINATED.