Roller shutter slat of the so-called mini-size made from a...

Details Roller shutter slat of the so-called mini-size made from a... Roller shutter slat of the so-called mini-size made from a...

E - Fixed Constructions

06

B

160/11

E06B 7/16 (2006.01) E06B 9/165 (2006.01)

Patent

CA 1255206

ABSTRACT A roller shutter slat comprises a hollow chamber profile of the so-called mini-size cut from a plastic- foamed aluminium strip to the width of the roller shutter. The said hollow chamber profile includes two unidirectionally curved main sections being of an outer-sided convex and outer-sided concave configuration, respectively, which, at the one end thereof, are bent with respect to one another first inwardly and then, in abutting relationship, outwardly by subsequently forming a double-walled hook, and at the other ends thereof are interconnected by forming a pocket open toward the profiled end and semi-circularly rounded at the bottom for receiving the hook of the next roller shutter bar. According to the invention, particular dimensions are provided for the thickness of the aluminium strip and the characteristic measures of the profile to allow substantially lower cost of production and reduced winding diameter with no substantial loss in strength and rigidity.

486199

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