Roller blind

Details Roller blind Roller blind

E - Fixed Constructions

06

B

E06B 9/15 (2006.01) E06B 9/11 (2006.01) E06B 9/18 (2006.01) E06B 9/34 (2006.01)

Patent

CA 2254864

The invention refers to the joints of the roller blind-, roller grille-, roller shutter profiles which increase the safety standard of roller blinds because of their specific shape and therefore operate without additional locking device. According belonging to the invention, the cross sections of the joints show a spiral shape with a specific curvature belonging to the invention. Therefore the spiral shape is created by the design of the inside bends and outside bends of each analysed spiral part which enclose with certain opening widths the respective joint capsules of the profiles. Because of the specific spiral of the core- and link profiles which are liked with each other and because of the twisting of the spiral joints by an angle of 180° the unauthorized attempt of pushing up of the roller blind results in a jamming of the profile elements that leads to the locking of the roller blind.

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