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Priority to ES1970160148UpriorityCriticalpatent/ES160148Y/en
Publication of ES160148UpublicationCriticalpatent/ES160148U/en
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Publication of ES160148YpublicationCriticalpatent/ES160148Y/en
Improved roller shutter, essentially characterized in that its slats are constituted by sections of semirigid strips of synthetic material, obtained by extrusion and provided with longitudinal ribs on their edges, of tubular configuration, advantageously having on their faces fluted symmetrical bands of very small width and height, the coupling between the different slats being carried out by means of transversal strips of synthetic material that contain inside them, completely surrounding them, threads made of a synthetic material of very high resistance, the coupling of these articulation bands with the slats being carried out by direct welding of the interested parties, the slats being in parallel and adjacent arrangement and the transversal bands regularly separated, obtaining their coupling by means of electronic welding, which produces a local fusion of the parts in contact, determining the connections extremely resistant. (Machine-translation by Google Translate, not legally binding)
Device for clamping two parts lying coaxially one inside the other, with at least one ring-shaped clamping element of essentially Z-shaped or Y-shaped cross-section, which consists of resilient-elastic material