Expansion joint cover

Claim 1

AN EXPANSION JOINT COVER FOR FIRST AND SECOND STRUCTURAL BODIES WHICH CONFRONT EACH OTHER RELATIVELY MOVABLY ACROSS AN INTERMEDIATE ZONE TO BE COVERED: INCLUDING A BASE AND A COVER THEREFOR, SAID BASE COMPRISING A RIGID WEB SECURED TO ONE ONLY OF SAID STRUCTURAL BODIES AGAINST MOVEMENT RELATIVE THERETO AND HAVING A WIDTH SUFFICIENT TO BRIDGE SAID INTERMEDIATE ZONE AND EXTEND IN COVERING RELATION TO A FACE OF BOTH OF SAID BODIES, SAID BASE HAVING FIRST AND SECOND WALLS COEXTENSIVE WITH SAID WEB AND EXTENDING ANGULARLY THEREFROM TO BE BROUGHT INTO FACING RELATIONSHIP WITH THE RESPECTIVE STRUCTURAL BODIES AND THE SAID SECOND WALL BEING DISPOSED TO EXTEND INTO CONTIGUOUS RELATION WITH THE SECOND OF SAID BODIES WHILE PERMITTING SUSBSTANTIALLY UNRESTRAINED LATERAL DISPLACEMENT OF SAID BODY RELATIVE TO SAID WEB, FIRST WALL STRUCTURE EXTENDING OUTWARDLY OF SAID WEB AND FIRST WALL TO DEFINE ONE OUTERMOST LONGITUDINAL EDGE OF SAID BASE AND HAVING WALL SURFACES FORMING A LATCHING MEMBER COEXTENSIVE WITH SAID BASE, SECOND WALL STRUCTURE INTEGRAL WITH SAID SECOND WALL AND EXTENDING OUTWARDLY OF SAID WEB AND SECOND WALL TO DEFINE THE OPPOSITE OUTERMOST MARGINAL EDGE OF SAID BASE, AND WALL MEANS INTEGRAL WITH SAID BASE FOR THE SUPPORT THEREOF ON SAID ONE STRUCTURAL BODY; AND SAID COVER INCLUDING A WEB ADAPTED TO COVER SAID BASE, AND FIRST AND SECOND TRANSVERSELY OPPOSED PARALLEL EDGE WALLS COEXTENSIVE LONGITUDINALLY WITH SAID COVER, ONE OF SAID EDGE WALL HAVING SURFACES INTERFITTING WITH THE SAID SECOND WALL STRUCTURE OF THE BASE AND THE OTHER OF SAID EDGE WALLS HAVING WALL SURFACES DEFINING A LATCHING MEMBER INTERFITTING WITH SAID BASE LATCHING MEMBER.