US Patent 10179443 Window tinting tool

A tool for applying tint film to the rear window of an automobile has a unitary body with a concave top side and a convex bottom side, and the unitary body including a first elongate wing with front and rear edges extending to a first distal end, and an opposite second elongate wing with front and rear edges extending to a second distal end, and a central portion between the first and second elongate wings. The unitary body includes a skeletal frame member and flexible blades fitted to the skeletal frame member and extending about a periphery of the first and second elongate wings to define the front and rear edges and distal ends. The skeletal frame maintains desired curvature and prevents excessive flexing and bending of the elongate wings. The first and second wings have different degrees of curvature measured transversely between the respective front and rear edges.