Cover assembly for an outlet box and supporting wall mat therefor

Claim 1

AN OUTLET BOX COVER ASSEMBLY COMPRISING A WALL MAT AND A COVER PLATE, SAID WALL MAT COMPRISING A FLAT FRAME HAVING A PAIR OF SPACED SIDE PORTIONS AND TOP AND BOTTOM PORTIONS, RECESSED MEANS IN SAID WALL MAT ADAPTED FOR RECEIVING THE EARS OF AN ELECTRIC FIXTURE AND FOR MOUNTING SAID WALL MAT TO AN OUTLET BOX RECCESSED IN AN OPENING IN A WALL SO THAT SAID WALL MAT WILLL LIE FLUSH AGAINST THE WALL AND SO THAT SAID ELECTRIC FIXTURE WILL EXTEND INTO SAID OUTLET BOX, A GRIPPING ELEMENT ON SAID WALL MAT, SAID GRIPPING ELEMENT COMPRISING A PLURALITY OF RESILIENT, RADIALLY INWARDLY DIRECTED FINGERS, SAID COVER PLATE COMPRISINGA FLAT PLATE HAVING A DOWNWARDLY BEVELED, WALL-ENGAGING EDGE PORTION, A TEAR-SHAPED MATING ELEMENT HAVING A RADIALLY INWARDLY SLOPING SURFACE FIXED TO SAID COVER PLATE, SAID FINGERS OF THE GRIPPING ELEMENT ENGAGING THE INWARDLY SLOPING SURFACE OF SAID MATING ELEMENT TO CONSTANTLY PULL THE COVER PLATE TOWARD THE WALL MAT AND TO PULL SAID BEVELED EDGE INTO ENGAGEMENT WITH THE WALL ADJACENT TO THE PERIPHERY OF SAID WALL MAT.