(57) A mechanism for sofa-beds and the like comprising at least a back (32) and a seat
(39), said mechanism comprising a bedspring capable of supporting at least a mattress
(8), is divided into several sections (7, 21, 22, 41 and 42) hinged to one another
and is foldable under the seat (39), and a plurality of lever systems (A, B and C)
capable of lifting and extending such a bedspring, as well as folding the seat (39)
and the back (32) under at least one of said sections (22) of the bedspring. The present
invention further relates to a chair-bed and a sofa-bed comprising such a mechanism.
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