Static structures (e.g. – buildings) – Machine or implement
Patent
1993-04-26
1996-09-17
Canfield, Robert J.
Static structures (e.g., buildings)
Machine or implement
527305, 527312, 527321, 52222, 52 63, E04H 1532, E04C 300
Patent
active
055556957
ABSTRACT:
A channeled extrusion for both framing and holding flexible coverings, such as in fabric covered awnings and similar framed, flexible cover structures. Such extrusions commonly contain at least one opening or channeled side, and when such extrusions are bent or arcuately formed in order to provide for curved surfaces, the channeled side may tend to close due to the opposing forces applied in the opposite walls due to the bending action. This is especially true when the channeled side is parallel to the plane of bending. The extrusions provided preclude this closing tendency of the slot and offer lateral structural stability. These provided extrusions can be formed into arcuate shapes without the need for spacers in the channel or special bending tools designed to prevent the closure of the channel. The reinforcement means provided include these elements: an inner lateral web, thickened upper walls, distension zones, stress-relieving indentations, and inner longitudinal bracing.
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Canfield Robert J.
Litman Richard C.
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