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CORPORACION ESPANOLA DE COMERCIO EXTERIOR SA
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CORPORACION ESPANOLA DE COMERCIO EXTERIOR SA
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Application filed by CORPORACION ESPANOLA DE COMERCIO EXTERIOR SAfiledCriticalCORPORACION ESPANOLA DE COMERCIO EXTERIOR SA
Priority to ES1982269425UpriorityCriticalpatent/ES269425Y/en
Publication of ES269425UpublicationCriticalpatent/ES269425U/en
Application grantedgrantedCritical
Publication of ES269425YpublicationCriticalpatent/ES269425Y/en
Multipurpose staircase, essentially characterized by being constituted by two frames hingedly joined by one of its ends, with the particularity that each of said frames is constituted by two frames, an upper one based on rectangular profiles joined by tubular crosspieces acting as rungs, and another lower one based on U-shaped profiles, with their concavities facing each other and related to each other through pairs of tubes, associated to the external face of their lateral branches and in functions each pair of such tubes, of rungs for this second sector, so that the lower frame, by its special structuring, allows the telescopic sliding inside its corresponding upper frame, locking means being provided for both frames in different relative positions thereof. (Machine-translation by Google Translate, not legally binding)