Removeable and interchangeable ski binding

Claim 1

A BINDING FOR SECURING A SKIER''S BOOT TO A SKI COMPRISING: A GUIDE TRACK ADAPTED TO BE MOUNTED ON A SKI, SAID GUIDE TRACK COMPRISING A CHANNEL MEMBER HAVING LATERALLY EXTENDING FLANGES SPACED FROM THE UPPER SURFACE OF THE SKI; AN ELONGATED SLIDE PLATE MOUNTED FOR SLIDING MOVEMENT ALONG SAID CHANNEL MEMBER WITHIN THE SPACE BETWEEN SAID FLANGES TO DIFFERENT ADJUSTED POSITIONS LENGTHWISE OF THE SKI; A HEEL PLATE SLIDEABLY MOUNTED ON SAID TRACK, SAID HEEL PLATE HAVING FLANGE ENGAGING PORTIONS SHAPED TO PREVENT SEPARATION OF THE HEEL PLATE FROM THE TRACK; MEANS FOR LOCKING SAID HEEL PLATE TO SAID ELONGATED SLIDE PLATE IN DIFFERENT ADJUSTED POSITIONS LENGTHWISE THEREOF; AND MEANS FOR LOCKING SAID ELONGATED SLIDE PLATE TO SAID GUIDE TRACK INCLUDING A LOCK PLATE SLIDEABLY MOUNTED ON SAID CHANNEL MEMBER, SAID LOCK PLATE HAVING FLANGE ENGAGING PORTIONS SHAPED TO PREVENT SEPARATION OF THE LOCK PLATE FROM THE GUIDE TRACK.