A convertible couch, twin bed, and queen bed includes a U-shaped section having a first arm, a second arm, and a back section; a first end section; a second end section; and first, second and third mattress sections; the first mattress section is rotatably joined to the second mattress section, which is rotatably joined to the third mattress section, which has a first bottom edge and an opposing second bottom edge; the first mattress section has an internal first edge and an opposing internal section edge; the internal first edge has a second portion of the first zipper, and the internal second edge has a second portion of the second zipper; the first zipper releasably joins the first end section and the first mattress section, and the second zipper releasably joins the second end section and the first mattress section.

A convertible sofa bed includes a U-shaped section having a first arm and a second arm; a first end section; a second end section; and first, second and third mattress sections; the first mattress section is rotatably joined to the second mattress section, which is rotatably joined to the third mattress section, which has a first bottom edge and an opposing second bottom edge; the first mattress section has an internal first edge and an opposing internal section edge; the internal first edge has a second portion of the first closure element, and the internal second edge has a second portion of the second closure element; the first closure element releasably joins the first end section and the first mattress section, and the second closure element releasably joins the second end section and the first mattress section.

A foldable sofa-bed includes: a base having a cavity; a bed with a seat section and a subseat section, each of the seat section and the subseat section including a cushion and an underlying panel; and a bed folding mechanism attached to the base, subseat and seat. The bed folding mechanism is configured to move the bed between a folded position, in which the seat and subseat sections are generally horizontally disposed and positioned in vertically stacked relationship in the cavity of the base, with the seat and subseat cushions facing upwardly, and an unfolded position, in which the seat and subseat sections are horizontally disposed and aligned to form a sleeping surface.

An integrated chair for selectively providing seating support and sleeping support is provided. The integrated chair comprises a mobile sleeping unit and a chair shell. The chair shell comprises: a pair of spaced, opposed, side walls, each side wall having at least a bottom edge, an inner surface and an outer surface; a back wall extending between the pair of side walls; and a pair of truncated arms, one of each of the pair of arms corresponding with a respective one of the pair of side walls, each extending inwardly from the inner surface of a corresponding side wall and having a lower edge that is distal and above the bottom edge of the corresponding side wall; wherein the inner surfaces of the side walls and the lower edge of the arms of the chair shell define a storage compartment sized to accommodate the mobile sleeping unit when the mobile sleeping unit is in the closed position.

Convertible multifunctional furniture comprising at least one support base, at least one lifting device which is supported on the support base, a usage unit, a horizontal rotational axis in the longitudinal or transverse direction about which the usage unit can be rotated, and a mounting pin at each end of the rotational axis. At least one scissor mechanism is arranged between the lifting devices and each mounting pin of the rotational axis, at least one scissor limb is connected to a drive of the lifting device at one end and to a support at the other end. The other end of the scissor both is connected to a linear element for controlling purposes, said linear element having a surface which can be coupled to a surface of a wheel that is rotatably coupled to a complementary element of the mounting pin.

An integrated chair for selectively providing seating support and sleeping support is provided. The integrated chair comprises a mobile sleeping unit and a chair shell. The chair shell comprises: a pair of spaced, opposed, side walls, each side wall having at least a bottom edge, an inner surface and an outer surface; a back wall extending between the pair of side walls; and a pair of truncated arms, one of each of the pair of arms corresponding with a respective one of the pair of side walls, each extending inwardly from the inner surface of a corresponding side wall and having a lower edge that is distal and above the bottom edge of the corresponding side wall; wherein the inner surfaces of the side walls and the lower edge of the arms of the chair shell define a storage compartment sized to accommodate the mobile sleeping unit when the mobile sleeping unit is in the closed position.

A convertible couch, twin bed, and queen bed includes a U-shaped section having a first arm, a second arm, and a back section; a first end section; a second end section; and first, second and third mattress sections; the first mattress section is rotatably joined to the second mattress section, which is rotatably joined to the third mattress section, which has a first bottom edge and an opposing second bottom edge; the first mattress section has an internal first edge and an opposing internal section edge; the internal first edge has a second portion of the first zipper, and the internal second edge has a second portion of the second zipper; the first zipper releasably joins the first end section and the first mattress section, and the second zipper releasably joins the second end section and the first mattress section.

An internal spring system resiliently supports a mattress in an item of furniture. The spring system includes a system of sinuous springs arranged between upper and lower wire grids. A movable extender assembly is mounted on the grids to accommodate a longitudinal shift between the upper and lower grids during folding of the spring system between open and closed positions.

Convertible multifunctional furniture comprising at least one support base, at least one lifting device which is supported on the support base, a usage unit, a horizontal rotational axis in the longitudinal or transverse direction about which the usage unit can be rotated, and a mounting pin at each end of the rotational axis. At least one scissor mechanism is arranged between the lifting devices and each mounting pin of the rotational axis, at least one scissor limb is connected to a drive of the lifting device at one end and to a support at the other end. The other end of the scissor both is connected to a linear element for controlling purposes, said linear element having a surface which can be coupled to a surface of a wheel that is rotatably coupled to a complementary element of the mounting pin.

An internal spring system resiliently supports a mattress in an item of furniture. The spring system includes a system of sinuous springs arranged between upper and lower wire grids. A movable extender assembly is mounted on the grids to accommodate a longitudinal shift between the upper and lower grids during folding of the spring system between open and closed positions.