Abstract: A chair in which a synchronized mechanism, fixed on a telescopic post of a base, supports and renders interdependent rigid elements and which, define respectively the backrest and the seat of the chair and are mutually hinged at a first point, i.e. along a horizontal axis perpendicular to the longitudinal centerline plane of the seating space, which is entirely defined by a single curved line obtained by joining the rigid elements and which are adapted for this purpose.
Abstract: A coupling device comprising arranged in two opposing walls of a box-like enclosure, two flexible tabs from which two raised portions which act against each other protrude inward, one of which is adapted to engage a rigid laminar element to be inserted between the two flexible tabs while the other, after the coupling, can be pushed manually in order to move the coupled raised portion and release the rigid laminar element to be removed.
Abstract: A chair in which a synchronized mechanism, fixed on a telescopic post of a base, supports and renders interdependent rigid elements and which, define respectively the backrest and the seat of the chair and are mutually hinged at a first point, i.e. along a horizontal axis perpendicular to the longitudinal centerline plane of the seating space, which is entirely defined by a single curved line obtained by joining the rigid elements and which are adapted for this purpose.
Abstract: A coupling device comprising arranged in two opposing walls of a box-like enclosure, two flexible tabs from which two raised portions which act against each other protrude inward, one of which is adapted to engage a rigid laminar element to be inserted between the two flexible tabs while the other, after the coupling, can be pushed manually in order to move the coupled raised portion and release the rigid laminar element to be removed.