Motion converting device

Claim 1

A MOTION CONVERTING MECHANISM COMPRISING: (A) A HOLLOW UNTHREADED NUT HAVING A RADIAL APERTURE THEREIN, (B) A BEARING MEMBER COMPRISING A PLURALITY OF BALLS, THE CENTERS OF SAID BALLS LYING IN A CIRCLE, SAID BEARING MEMBER BEING REMOVABLY CARRIED IN SAID RADIAL APERTURE, (C) A SHAFT DISPOSED WITHIN SAID HOLLOW UNTHREADED NUT AND HAVING THEREON A HELICAL GROOVE, THE CROSS SECTION OF WHICH HAS AT LEAST TWO INTERSECTING SIDES FORMING AN ANGLE, THE BISECTOR OF WHICH PASSES THROUGH A POINT ON THE CIRCUMFERENCE OF THE CIRCLE PASSING THROUGH THE CENTERES OF THE BALLS OF SAID BEARING MEMBER, AND (D) A SPHERE ROTATABLY MOUNTED IN SAID BEARING MEMBER AND HAVING A PORTION THEREOF DISPOSED IN SAID HELICAL GROOVE ON SAID SHAFT FOR ROLLING CONTACT WITH TWO PATHS OF POINT CONTACT, EACH OF WHICH PATHS IS ON A SEPARATE ONE OF TWO ADJACENT SIDES WHEREBY, WITH SAID HOLLOW UNTHREADED NUT RESTRAINED AGAINST ROTATION AND SAID SHAFT RESTRAINED AGAINST MOVEMENT ALONG ITS LONGITUDINAL AXIS, UPON THE EXERTION OF A LONGITUDINAL THRUST FORCE TO SAID HOLLOW UNTHREADED NUT IN EITHER DIRECTION, SAID SPHERE EFFECTS ROTATION OF SAID SHAFT ABOUT ITS LONGITUDINAL AXIS, AND UPON ROTATION OF SAID SHAFT IN EITHER DIRECTION ABOUT ITS LONGITUDINAL AXIS, SAID SPHERE TRANSMITS A FORCE TO SAID HOLLOW UNTHREADED NUT TO CAUSE SAID NUT TO TRAVEL CORRESPONDINGLY AND LONGITUDINALLY ALONG SAID SHAFT.