Release binding structure

Claim 1

IN A RELEASABLE SKI BINDING FOR A BOOT WHICH MAY BE FITTED WITH LONG THONGS FOR STRAPPING DOWN THE HEEL OF SAID BOOT TO PROVIDE IMPROVED SKI CONTROL, BUT WHICH IS NEVERTHELESS RELEASABLE IN THE EVENT OF A FALL FORWARDLY WITH RESPECT TO THE SKI, THE COMBINATION WICH COMPRISES A FORWARD ANCHORING MEMBER SECURED TO AND EXTENDING TRANSVERSELY OF THE SKI AND HAVING A REARWARDLY FACING SURFACE WHICH CONSISTS ENTIRELY OF A CURVED BEARING SURFACE THEREON, SAID CURVE HAVING AN ARC OF LESS THAN HALF A CIRCLE AND THUS FORMING AN OPEN BEARING, A BASE PLATE ARRANGED ON SAID SKI REARWARDLY OF SAID ANCHORING MEMBER, SAID BASE PLATE HAVING AT ITS FORWARD END A FORWARDLY FACING SURFACE CONSISTING ENTIRELY OF A MATING CURVED BEARING SURFACE HAVING A SWINGABLE RELATIONSHIP WITH SAID ANCHORING MEMBER BUT BEING SEPARABLE FROM THE CURVED SURFACE OF SAID ANCHORING MEMBER, WHEREBY THE REAR PORTION OF SAID BASE PLATE IS FREE TO SWING UPWARDLY AND FORWARDLY RELATIVE TO SAID SKI BY FRICTIONAL MOVEMENT BETWEEN SAID CURVED SURFACES WITH SUBSTANTIALLY PURE REVOLVING MOVEMENT ABOUT THE CENTER OF CURVATURE OF THE CURVED SURFACE OF SAID ANCHORING MEMBER AND TO SEPARATE COMPLETELY THEREFROM, SAID CURVED SURFACES MATING ABOUT A CENTER OF ROTATION WHICH IS SPACED ABOVE THE UPPER SURFACE OF THE SKI BY A DISTANCE EQUAL TO APPROXIMATELY HALF THE THICKNESS OF SAID FORWARD ANCHORING MEMBER, AND RELEASABLE RETAINING MEANS OPERATIVE AND EFFECTIVE UPON SAID BASE PLATE AT A POSITION LOCATED REARWARDLY OF SAID BEARING MEMBER, SAID RETAINING MEANS INCLUDING A YIELDABLE MEMBER WHICH IS YIELDABLE IN RESPONSE TO THE FORCES GENERATED IN A FORWARD FALL TO RELEASE SAID RETAINING MEANS.