Swim pool wall panel structure

Claim 1

AN EXCAVATED SWIMMING POOL THE VERTICAL-DEFINING WALL OF WHICH COMPRISES A PLURALITY OF LATERALLY ABUTTING PANEL-STRUCTURES SURROUNDING A SUPPORTING CONCRETE BASE AND INTEGRATED AT THEIR TOP ENDS WITH A BORDERING CONCRETE WALK, EACH PANEL-STRUCTURE COMPRISING A FLAT MIDDLE PORTION TERMINATING IN SPECIALLY-FORMED TOP AND BOTTOM END PORTIONS, THE BOTTOM END PORTION BEING CURVED FORWARDLY AND THEN EXTENDING DOWNWARDLY TO FORM A CONCAVELY ROUNDED CORNER HAVING A VERTICALLY DOWNWARD EXTENSION EMBEDDED IN THE CONCRETE BASE, THE CONCAVE FACE OF SAID BOTTOM END PORTION TERMINATING FLUSH WITH THE ADJACENT UPPER FACE OF THE SAID CONCRETE BASE, THE UPPER END PORTION OF THE PANEL BEING CURVED FORWARDLY AND THEN REARWARDLY TO FORM A ROUNDED FORWARDLY PROJECTING RIM HAVING ITS UPPER EDGE FLUSH WITH THE SURFACE OF THE BORDERING WALK, THE SAID RIM FORMING A HALF-ROUND OVERHANGING COPING AROUND THE PERIMETER OF THE POOL, AND AN UPWARDLY-DISPOSED EXTENSION INTEGRATED WITH THE SAID MIDDLE PORTION OF THE PANEL AND SPACED REARWARDLY OF THE SAID RIM, THE SAID UPWARDLY DISPOSED EXTENSION BEING EMBEDDED IN THE CONCRETE OF THE SAID BORDERING WALK.