Packaging device

Claim 1

A UNITARY PACKAGING DEVICE FOR SHEETS OF FRANGIBLE MATERIAL SUCH AS AUTOMOBILE REAR WINDOWS OR THE LIKE, WHICH COMPRISES A FRANGIBLE SHEET, A SUPPORTING PANEL OVERLYING ONE FACE OF THE SHEET AND HAVING DIMENSIONS GREATER THAN SAID SHEET, A FIRST PAIR OF SPACED INTEGRAL FLAPS FORMED BY PARALLEL SLITS EXTENDING INWARDLY FROM ONE EDGE OF SAID PANEL AND FOLDED OVER AN EDGE AND ALONG THE OTHER FACE OF SAID SHEET, A PAIR OF SPACED PARALLEL SLITS EXTENDING INWARDLY FROM THE OPPOSITE EDGE OF SAID PANEL, A LONGITUDINAL FOLD LINE EXTENDING BETWEEN SAID LAST-NAMED PAIR OF SLITS AND SPACED INWARDLY FROM SAID OPPOSITE EDGE TO FORM AN EDGE SUPPORTING STRIP, A SECOND PAIR OF SPACED FLAPS FORMED INTEGRALLY WITH SAID EDGE SUPPORTING STRIP,A LONGITUDINAL FOLD LINE DEFINING THE JUNCTION BETWEEN SAID SECOND FLAPS AND SAID EDGE SUPPORTING STRIP, SAID EDGE SUPPORTING STRIP ABUTTING THE OPPOSITE EDGE OF THE SHEET WITH SAID SECOND SPACED FLAPS FOLDED ALONG SAID OTHER FACE OF THE SHEET, A COVER PANEL HAVING DIMENSIONS GREATER THAN SAID SHEET OVERLYING SAID OTHER FACE THEREOF AND ENGAGING THE FOLDED-OVER PORTIONS OF SAID FLAPS, TRANSVERSELY ALIGNED NOTCHES IN THE OPPOSITE EDGES OF SAID COVER PANEL IN REGISTRY WITH THE NOTCHES IN SAID SUPPORTING PANEL CREATED BY THE FOLDING OF SAID FLAPS, BANDING STRAPS ENCIRCLING SAID SHEET AND SAID SUPPORTING AND COVER PANELS AND RECEIVED IN SAID NOTCHES TO HOLD SAID FOLDED-OVER FLAPS AGAINST SAID OTHER FACE OF SAID SHEET, AND MEANS SECURING THE OVERLAPPING PORTIONS OF SAID SUPPORTING AND COVER PANELS TOGETHER OUTSIDE THE PERIPHERY OF THE SHEET.