Infinitely variable speed ratio changing device

Claim 1

A VARIABLE SPEED RATIO CHANGING DEVICE COMPRISING, IN COMBINATION, A DRIVING MEMBER, A DRIVEN MEMBER, SAID DRIVING AND DRIVEN MEMBERS BEING ROTATABLE ABOUT RESPECTIVE AXES OF ROTATION OCCUPYING A FIXED RELATION TO EACH OTHER, AN IDLER MEMBER OPERABLY DISPOSED BETWEEN AND HAVING FRICTIONAL ROLLING CONTACT WITH SAID DRIVING AND DRIVEN MEMBERS FOR TRANSMITTING DRIVING TORQUE FROM THE DRIVING MEMBER TO THE DRIVEN MEMBER, SAID IDLER MEMBER BEING ROTATABLE ABOUT AN AXIS OF ROTATION SELECTIVELY SHIFTABLE TO DIFFERENT POSITIONS RELATIVE TO AT LEAST ONE OF SAID AXES OF ROTATION OF THE DRIVING AND DRIVEN MEMBERS FOR CORRESPONDING VARYING THE ROTATIVE SPEED RATIO THEREBETWEEN, AND AN ANNULAR PERMANENT MAGNET COAXIALLY CARRIED BY AND ROTATABLE WITH SAID IDLER MEMBER FOR EXERTING A MAGNETIC FORCE OF CONSTANT PRESELECTED MAGNITUDE AND THEREBY MAINTAINING SAID FRICTIONAL ROLLING CONTACT BETWEEN THE IDLER MEMBER AND THE DRIVING AND DRIVEN MEMBERS, RESPECTIVELY.