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Priority to ES1975212312UpriorityCriticalpatent/ES212312Y/en
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Publication of ES212312YpublicationCriticalpatent/ES212312Y/en
Balancºn, which being of which they are formed by a support frame, set seat-backrest, is characterized essentially because the two pairs of lateral legs of sustentation, are united through a U-shaped bar of very short lateral branches, with their kinking bridged by straight straights, from which and through two helical springs, the seat is suspended by elongated plates that diverge towards the vertices of said seat, while the backrest articulated to that, is also fixed to the lower hooks of said helical springs through two chains of rings, in which hooks operatively arranged in the upper vertices of the backrest are crimped, the inclination thereof being regulated by means of the arrangement of said hooks in suitable rings. (Machine-translation by Google Translate, not legally binding)