Roof expansion joint

Claim 1

EXPANSION JOINT STRUCTURE FOR A PAIR OF RELATIVELY SHIFTABLE ROOF SECTIONS HAVING RESPECTIVE UPPER SURFACES SEPARATED BY A JOIN THEREBETWEEN, SAID STRUCTURE COMPRISING: A PAIR OF EXPANSION MEMBERS ADAPTED TO BE SECURED TO RESPECTIVE SECTIONS ADJACENT THE MARGINS THEREOF DEFINING SAID JOINT AND TO EXTEND UPWARDLY FROM THE CORRESPONDING SURFACE; MEANS ON ONE OF SAID MEMBERS AND EXTENDING LATERALLY THEREFROM IN OVERLYING RELATIONSHIP TO THE UPPERMOST MARGIN OF THE OTHER MEMBER FOR CLOSING SAID JOINT WHEN SAID MEMBERS ARE SECURED TO THE SECTIONS AND FOR PERMITTING RELATIVE MOVEMENT OF SAID OTHER MEMBER AND SAID MEANS AS THE MEMBERS MOVE TOWARD AND AWAY FROM ONE ANOTHER UPON EXPANSION AND CONTRACTION OF SAID SECTIONS; AND A FLEXIBLE ELEMENT SECURED TO AND SPANNING THE DISTANCE BETWEEN SAID MEMBERS BELOW SAID CLOSING MEANS, SAID ELEMENT BEING DISPOSED FOR SEALING SAID JOINT WHEN SAID MEMBERS ARE SECURED TO SAID SECTIONS, SAID ELEMENT BEING PROVIDED WITH A PAIR OF OPPOSED SIDES, SAID CLOSING MEANS BEING DISPOSED FOR CLAMPING SAID SIDES TO THE UPPERMOST MARGINS OF SAID MEMBERS, SAID OTHER EXPANSION MEMBER INCLUDING A FLASHING MEMBER HAVING A FIRST PORTION OVERLYING THE CORRESPONDING SIDE OF THE ELEMENT AND SLIDABLY ENGAGING SAID CLOSING MEANS, SAID FLASHING MEMBER BEING PROVIDED WITH A SECOND PORTION EXTENDING DOWNWARDLY FROM SAID FIRST PORTION AND BEING NORMALLY SPACED FROM THE MAJOR PORTION OF SAID OTHER MEMBER TO PRESENT A REGION THEREBETWEEN FOR RECEIVING A QUANTITY OF ROOFING MATERIAL.