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Priority to ES1977230579UpriorityCriticalpatent/ES230579Y/en
Publication of ES230579UpublicationCriticalpatent/ES230579U/en
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Publication of ES230579YpublicationCriticalpatent/ES230579Y/en
Folding sofa bed perfected, being of the type that are constituted by two tubular frames, one front and one rear, related to each other by two pieces of unión, arranging the rear frame of a support leg that is a tubular profile with the ends elbowed upwards to articulate with said frame, while the previous frame rests on a support frame obtained from angular profiles that, adopting the general form of z, join with the aforesaid previous frame, and also basin with support pieces for the latter, and which frames have, in turn, cranks that articulate on the support legs and the sides of the bed base to allow the folding and unfolding thereof; essentially it is characterized in that the rear frame adopts a general u shape, where the horizontal branch and equal portions of the parallel queens constitute an independent element that is permanently articulated to the rest of said rear frame, so that such independent element is empowered to move from the horizontal and coplanar position with respect to the repeated rear frame to other immediately superior positions. (Machine-translation by Google Translate, not legally binding)