Windshield cleaners

Claim 1

A WINDSHIELD CLEANER FOR CLEANING A CURVED SURFACE AND COMPRISING A REPLACEABLE SQUEEGEE UNIT SUBSTANTIALLY FLEXIBLE THROUGHOUT ITS LENGTH AND CONFORMABLE TO A SURFACE BEING WIPED AND A PERMANENT RESILIENT BACKING MEMBER HAVING A CONCAVE FACE AND A WINDSHIELD WIPER ARM ATTACHING PART, SAID MEMBER BEING FORMED OF PLASTIC MATERIAL AND BEING OF A CURVATURE SUBSTANTIALLY EQUIVALENT TO THE MAXIMUM CURVATURE OF THE WINDSHIELD SURFACE TO BE WIPED AND CONTAINING A CHANNEL FOLLOWING THE CURVATURE OF THE BACKING MEMBER AND EXTENDING LENGTHWISE OF ITS CONCAVE FACE, SAID CHANNEL HAVING A PAIR OF OPPOSED SIDE WALLS, EACH SIDE WALL HAVING AN UNBROKEN FACE EXTENDING FROM END TO END OF THE MEMBER, THE SQUEEGEE UNIT BEING SLIDABLY INSERTABLE LENGTHWISE INTO THE CHANNEL BETWEEN ITS SIDE WALLS TO EXTEND ALONG THE ENTIRE LENGTH OF THE CHANNEL, AND WHEREIN THE CHANNEL IS OF GREATER DEPTH THAN THE DEPTH OF THE PORTION OF THE SQUEEGEE UNIT CONTAINED THEREIN, AND A PLURALITY OF FLEXIBLE INTEGRAL STRENGTHENING WEBS ARRANGED IN SPACED APART RELATION AND BRIDGING THE INNER PORTION OF THE CHANNEL INWARDLY OF THE SQUEEGEE UNIT.