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Aplicaciones de Sistemas Industriales SA
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Aplicaciones de Sistemas Industriales SA
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Application filed by Aplicaciones de Sistemas Industriales SAfiledCriticalAplicaciones de Sistemas Industriales SA
Priority to ES1968135926UpriorityCriticalpatent/ES135926Y/en
Publication of ES135926UpublicationCriticalpatent/ES135926U/en
Application grantedgrantedCritical
Publication of ES135926YpublicationCriticalpatent/ES135926Y/en
Folding ladder, characterized by the fact of being constituted by a succession of steps formed by a flat laminar footprint with a front rim in its central part, curved downwards, and a riser composed of two flat laminar pieces that cover each of the frontal marginal zones, with upper flange curved in the incoming direction, in which both flanges wrap a transverse bar as axis of rotation of the type of a hinge, so that the lateral edges of the tracks and risers are integral to a series of plates successively hinged at their ends with a staggering that intersects with another analogous staggering, the two staggered stages being related to each other by one pin applied to the points of mutual crossing, with free articulation, all in such a way that in the extended position operating the various strips of those referred to series are in perpendicularity, both for those of a to the same series as between one series and another, determining a square contours related diagonally, while in the retracted position said series of plates is. They are attached in mutual parallelism, so that the risers are lowered below the respective tracks, forming a compact block of minimum height. (Machine-translation by Google Translate, not legally binding)
Improvements in the manufacture of metal interfaces for platforms, gangways, stairs and analogue elements. (Machine-translation by Google Translate, not legally binding)
Improvements introduced in the construction of total superior opening files, partially folding laterally. (Machine-translation by Google Translate, not legally binding)