US 4,189,880 AGranted

Combination mounting frame and film for a window

OwnerGene Ballininventor

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Abstract

The within improvements are applicable for window construction kits of the type used for providing storm, screen, sun-block, and/or tinted window coverings wherein, as understood, an appropriate film, such as plastic or the like, is attached by a so-called spline about its peripheral edges within a supporting frame. Among other improvements, the disclosure contemplates an optimum T-shape in the spline which provides an attached, conveniently gripped flat surface to the spline to facilitate its film-stretching entrance into said frame, to more readily place the spline into and remove it from its attached connection to said frame, as well as contributing to an enhanced appearance in the window and providing a dust cover thereto. The within disclosure also contemplates an adhesive system to facilitate attachment of the frame to a variety of surfaces.

Claims6

Dependent claims

Improvements for a frame attached about a window for holding a plastic sheet in a taut condition in covering relation over said window of the type employing mounting strip means in surrounding relation to said window consisting of spaced apart walls bounding a sheet-engaging channel therebetween and having a sheet-engaging member sized to be inserted into said channel incident to frictionally engaging said sheet against said walls, the improvements to said frame comprising a cooperating pair of interfitting projection and groove means for stretching said plastic sheet free of wrinkles during said insertion of said sheet-engaging member into said channel, said projection being centrally located in upstanding relation along said channel and said groove being formed in said sheet-engaging member in facing relation thereto, whereby the initial movement of said member into said channel frictionally engages said sheet against said walls thereof to provide a corresponding initially taut condition in said sheet and subsequent insertion movement thereof thereafter forces said projection into said groove with said sheet in an interposed position therebetween to cause the further stretching out of any wrinkles in said sheet.

Dependencies are inferred from the claim text.