Nonlinear electromagnetic motion responsive device

Claim 1

AN ELECTROMAGNETIC DEVICE COMPRISING AN ANNULAR PRIMARY WINDING, A PAIR OF ANNULAR SECONDARY WINDINGS, MEANS FOR MOUNTING SAID SECONDARY WINDINGS ADJACENT EACH SIDE, RESPECTIVELY, OF SAID PRIMARY WINDING AND COAXIALLY THEREWITH, A HOLLOW CYLINDRICAL RELATIVELY STATIONARY PRIMARY CORE MEMBER, A PAIR OF HOLLOW CYLINDRICAL RELATIVELY STATIONARY, SECONDARY CORE MEMBERS, MEANS FOR MOUNTING SAID PRIMARY CORE MEMBER AND SAID SECONDARY CORE MEMBERS SUBSTANTIALLY CONCENTRICALLY WITHIN SAID PRIMARY AND SECONDARY WINDINGS, RESPECTIVELY, AND FOR SPACING SAID SECONDARY CORE MEMBERS FORM SAID PRIMARY CORE MEMBER, MEANS FOR SUPPLYING A FLUCTUATING POTENTIAL TO SAID PRIMARY WINDING, AN ARMATURE OF A LENGTH GREATER THAN THAT OF SAID PRIMARY CORE MEMBER AND LESS THAN THE DISTANCE BETWEEN SAID SECONDARY CORE MEMBERS, AND MEANS FOR MOUNTING SAID ARMATURE WITHIN SAID PRIMARY AND SECONDARY CORE MEMBERS AND FOR DISPLACING SAID ARMATURE SO AS TO VARY THE MAGNETIC RELUCTANCE BETWEEN SAID PRIMARY AND SECONDARY CORES AND THE MAGNETIC COUPLING BETWEEN SAID PRIMARY AND SECONDARY WINDINGS IN RESPONSO TO A VARYING CHARACTERISTIC.