Sinuous wire seat section sofa sleeper

A foldable sofa sleeper sofa bed assembly capable of extending from a folded sofa position to an extended bed position, said assembly having a generally rectangular frame comprising pivotally interconnected head, body, intermediate and foot frame sections each including a pair of opposed side rails, end rails connecting said opposed side rails of said head and foot frame sections, respectively, and a cross rail extending between said opposed side rails of said intermediate frame section, the improvement comprising:

• a floating cross tube having two ends spaced from and parallel said cross rail, said ends of said cross tube being attached to said cross rail with wire hooks of a fixed length, each hook passing through a hole in an end of said floating cross tube and a hole in said cross rail,
• a plurality of transversely spaced, longitudinally extending sinuous wire springs secured to and extending between said floating tube and said end rail of said foot frame section.

A sofa sleeper foldable sofa bed assembly having pivotally interconnected head, body, intermediate and foot frame sections each including a pair of opposed side rails, said foot and head frame sections having end rails connecting said side rails, a cross rail extending between said opposed side rails of said intermediate frame section, said frame sections being extendable to form a bed and foldable to form a sofa seat,

• a plurality of transversely spaced, longitudinally extending sinuous wire springs extending between said cross rail and said end rail of said foot frame section, each sinuous wire spring having a first substantially planar hook at one end of said sinuous wire spring engaged with said cross rail and a second substantially planar hook at the other end of said sinuous wire spring engaged with said end rail of said foot frame section, said planar hooks of each sinuous spring being located in mutually perpendicular planes such that when said frame sections are extended said first hook is substantially vertically oriented and inserted through a hole in the top of the cross rail and said second hook is substantially horizontally oriented and inserted through a hole in a sidewall of the end rail.