Sealing device for doors

Claim 1

A SEALING DEVICE FOR DOORS, ADAPTED TO REPLACE A FIXED FLOOR SILL, COMPRISING A DOOR FRAME, A DOOR HAVING A DOWNWARDLY FACING GROOVE IN ITS LOWER EDGE PORTION, A SEALING LEDGE SUBSTANTIALLY IN SAID GROOVE FOR VERTICAL MOVEAMENT TO AN UPPER POSITION CLEARING THE FLOOR AND A LOWER POSITION ENGAGING AND SEALING AGAINSY THE FLOOR, SAID SEALING LEDGE COMPRISING A PAIR OF SPACED APART, ELONGATED STRIPS OF SHEET MATERIAL EXTENDING SUBSTANTIALLY THE LENGTH OF SAID LEDGE, AND A PAIR OF SPACING STRIPS OF ELASTIC MATERIAL ONE ABOVE THE OTHER, THE LOWER OF SAID SPACING STRIPS EXTENDING BELOW SAID STRIPS OF SHEET MATERIAL AND SERVING AS THE SEAL WHEN ENGAGING THE FLOOR, THE UPPER ONE OF SAID ELASTIC STRIPS BEING SHORTER THAN SAID LOWER ELASTIC STRIP AND BEING SPACED THEREFROM FORMING A TUNNEL BELOW ITSELF; ACTUATING MEANS FOR SAID SEALING LEDGE COMPRISING AN ELONGATED SPRING ROD LOCATED IN SAID GROOVE, ARTICULATED MEANS CONNECTING ONE END OF SAID SPRING ROD TO SAID DOOR AND SAID SPRING ROD EXTENDING THROUGH SAID TUNNEL ABOVE SAID LOWER ELASTIC STRIP AND BELOW SAID UPPER ELASTIC STRIP, THE OTHER END OF SAID SPRING ROD EXTENDING OUT OF SAID GROOVE TO ENGAGE SAID DOOR FRAME WHEN THE DOOR IS CLOSED TO PRESS ON THE SAID OTHER END OF SAID SPRING ROD TO CAUSE SAID SPRING ROD TO BEND DOWNWARDLY IN ITS CENTRAL PORTION TO FORCE SAID SEALING DEVICE INTO SEALING ENGAGEMENT WITH THE FLOOR, AND SAID SPRING ROD BEING DISENGAGED FROM SAID DOOR FRAME WHEN THE DOOR IS OPENED WHEREBY SAID SPRING ROD STRAIGHTENS AND RAISED SAID SEALING DEVICE BY ENGAGEMENT BENEATH SAID UPPER ELASTIC STRIP.