Ski bindings

Claim 1

A SKI BINDING FOR CO-OPERATION WITH A SKI BOOT, THE BINDING COMPRISING A TOE-RETAINING DEVICE FOR ATTACHMENT TO THE UPPER SURFACE OF THE SKI, A TOE-PIECE FOR ATTACHMENT TO THE TOE OF A SKI BOOT, A FIRST MEMBER ON THE TOE-RETAINING DEVICE, A SECOND MEMBER ON THE TOE-PIECE, A FIRST RECESS IN ONE OF SAID MEMBERS, A FIRST CONVEX PROJECTION ON THE OTHER OF SAID MEMBERS FOR RELEASABLE ENGAGEMENT WITH THE RECESS, A HEEL-RETAINING DEVICE FOR ATTACHMENT TO THE UPPER SURFACE OF THE SKI, A HEEL-PIECE FOR ATTACHMENT TO THE HEEL OF THE BOOT, A THIRD MEMBER ON THE HEEL-PIECE, A FOURTH MEMBER ON THE HEEL-RETAINING DEVICE, ONE OF THE THIRD AND FOURTH MEMBERS HAVING A SECOND RECESS AND THE OTHER OF THEM HAVING A SECOND CONVEX PROJECTION FOR RELEASABLE ENGAGEMENT WITH THE SECOND RECESS, A SPRING ASSOCIATED WITH ONE OF SAID FIRST AND FOURTH MEMBERS FOR URGING IT TOWARDS THE OTHER OF SAID FIRST AND FOURTH MEMBERS, A SLIDER MEMBER CARRYING THE SPRING AND SAID MEMBER ASSOCIATED THEREWITH, A HOUSING IN WHICH THE SLIDER MEMBER IS MOUNTED, A SHOULDER ON THE SLIDER MEMBER, A CAM ROTATABLY MOUNTED ON THE HOUSING AND CO-OPERATING WITH THE SHOULDER, AN OPERATING MEMBER FOR ROTATING THE CAM TO DISPLACE THE SLIDER MEMBER FROM A REARWARD POSITION WHERE THE PROJECTIONS AND RECESSES ARE DISENGAGED TO A FORWARD POSITION WHERE THE PROJECTIONS AND RECESSES ARE ENGAGEABLE TO SECURE THE BOOT TO THE SKI, SAID OPERATING MEMBER ALSO SERVING FOR CONTROLLING DISPLACEMENT OF SAID SLIDER MEMBER REARWARDLY FROM THE FORWARD POSITION, AND MEANS FOR LOCKING THE SLIDER MEMBER WHEN DISPLACED FORWARDLY FROM THE REARWARD POSITION.