FOLDABLE MATTRESS FOR SOFA AND METHOD FOR STORAGE Russian patent published in 2017 - IPC A47C17/22 

FIELD: personal demand items.

SUBSTANCE: foldable mattress contains the first section; the second section comprising a folding snake spring and pivotably connected to the said first section; the third section comprising a folding snake spring and connected to the said second section; a transition section of the mattress comprising a support member, the said support member being laterally positioned within the said transition section; the fourth section comprising a folding snake spring located between the said third section and the said fourth section and a foot-extending section attached to the said fourth section, whereby the said folding mattress can be folded inside the sofa frame; a spacer assembly comprising a proximal member with a hook, a distal member with a hook, an intermediate member with a hook, at that, the said proximal member with a hook is attached to the said distal member with a hook, the said spacer assembly is attached to the said support member within the said transition section, and the said intermediate member with a hook is attached to the said distal member with a hook, and a plate attached to the said spacer assembly and to the said support member.

EFFECT: convenience of mattress usage.

10 cl, 7 dwg