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US 5,839,252 AGranted
Metal door with continuous frame and method
AssigneeThe Stanley Works
InventorsDavid M. Berghorn, Shaojun Gao
Life of this patent
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AssigneeThe Stanley Works
InventorsDavid M. Berghorn, Shaojun Gao
Estimating the term…
A metal door has a unitary rectangular frame of generally uniform cross section providing stiles and rails, and a pair of substantially rectangular panels which are secured to the frame. The panels have opposed flanges overlying and engaged with the adjacent side margins of the stiles of the frame to secure the panels thereto. The door is fabricated by forming an elongate metal strip into a frame element of generally uniform cross section with channels between a generally planar central portion and inwardly offset marginal portions. A predetermined length of the strip is bent to form a substantially rectangular frame, the ends of which are fastened together. The panels have lips on their flanges and are assembled to the frame with the flanges inserted into the channels and the lips frictionally engaging the side walls thereof.
A metal door comprising a continuous substantially rectangular frame with stiles and rails, and a pair of substantially rectangular panels engaged with said frame, said frame comprising an integrally formed continuous, unitary metallic frame member of generally uniform cross section with marginal portions extending along the sides thereof and channels in its outer face extending along said side marginal portions, said panels having opposed flanges extending along the sides thereof overlying and adjacent said marginal portions of said stiles of said frame and engaged in said channels to secure said panels thereto.
In a method of fabricating a metal door, the steps comprising:
Dependencies are inferred from the claim text.