Coated vehicle glazing closures

Claim 1

A WINDOW CLOSURE COMPRISING AN ELONGATED SHEET OF GLASS PROVIDED WITH A MAIN PORTION CURVING ADJACENT EACH LONGITUDINAL EXTREMITY ABOUT AN AXIS EXTENDING TRANSVERSELY OF SAID SHEET TO FORM WING PORTIONS EXTENDING IN ONE DIRECTION FROM THE LONGITUDINAL EXTREMITIES OF SAID MAIN PORTION AND CURVING ADJACENT ONE SIDE ABOUT AN AXIS EXTENDING LONGITUDINALLY OF SAID SHEET TO FORM AN UPPER PORTION EXTENDING IN SAID ONE DIRECTION FROM THE MAIN PORTION IN A PLANE ANGULARLY DISPOSED TO SAID WING PORTIONS, A LIGHT AND HEAT-SCREEING COATING OF NONUNIFORM THICKNESS INTEGRALLY UNITED DIRECTLY WITH THE GLASS SURFACE BUT NOT INTERMINGLED WITH THE GLASS, SAID COATING CONSISTING ESSENTIALLY OF A METAL OXIDE SUFFICIENTLY TRANSPARENT TO LIGHT TO PERMIT VISION THERETHROUGH THROUGHOUT IT EXTENT AND HAVING RELATIVELY LOW TRANSPARENCY TO LIGHT AND HEAT IN SAID UPPER PORTION AND DECREASING IN THICKNESS DOWNWARDLY FROM A SECTION OF SAID UPPER PORTION TO PROVIDE A HEAT SCREEN OF GRADUALLY INCREASING TRANSPARENCY TO LIGHT AND HEAT ALONG AN AXIS TRANSVERSE TO THE LONGITUDINAL AXIS OF SAID SHEET IN THE PLANE OF THE COATED SURFACE EXTENDING BETWEEN THE WING PORTIONS, BUT OF SUBSTANTIALLY UNIFORM THICKNESS ALONG ANY LONGITUDINAL AXIS, AND A PORTION BELOW SAID COATED UPPER PORTION ESSENTIALLY FREE FROM SAID COATING TO PERMIT CLEAR VISION THERETHROUGH AND HAVING ITS SAID SURFACE IN ESSENCE ELECTRICALLY NONCONDUCTIVE.