Foldable bed bottom frame assembly for use in sofa beds and the like

Claim 2

A foldable bed bottom frame assembly for use in a sofa bed having a main frame, said frame assembly comprising an articulated mattress support frame having a straight head section, a center section and a foot section, a pivoted link assembly connected to said head section and adapted to be mounted on said main frame so as to support said head section for up and down movement in an inclined direction between an upper sleep position and a lower storage position, hinge means connecting said head and center sections, leg means connected to said hinge means and to said link assembly and operable to support said head and center sections in said sleep position of said head section, said link assembly being operable to move said leg means to a position folded against said head section in response to folding of said center section on top of said head section, means pivotally connecting said center and foot sections, and a foldable leg assembly connected to said center and foot sections.

Claim 3

Apparatus according to claim 1 further including mattress support means on said support frame, a mattress disposed on top of said support means in unfolded positions of said frame sections, said sections being foldable to positions in which said foot section is on top of said center and head sections and a portion of said mattress is on top of said foot section.

Claim 4

Apparatus according to claim 2 wherein said center and foot sections are of substantially equal length and said head section is of a substantially greater length.

Claim 5

Apparatus according to claim 3 wherein a major portion of said mattress is disposed between said head and center sections in said folded positions of said sections.

Claim 6

A sofa bed comprising a hollow sofa frame having a front panel, a rear wall and a seat back located forwardly of said rear wall, a foldable mattress support frame having a head section, a center section and a foot section and movable between a generally horizontal sleep position and a folded position, a mattress located on top of said bed frame in said sleep position thereof, said bed frame being foldable to a position in which said center section is on top of said head section and said foot section is on top of said center section, a portion of said mattress being on top of said foot section in said folded position of the frame, a pivoted link assembly connected to and extending between said sofa frame and said head section and supporting said head section for up and down movement in an inclined direction between said sleep position and a storage position within said sofa frame, said head section being of a predetermined length slightly less than the distance between said front panel and said rear wall and said center and foot sections being of lengths less than said predetermined length and slightly less than the distance between said front panel and said seat back, said head section in said storage position being between said front panel and said rear wall with said center and foot sections and said mattress stacked on top.

Claim 7

A sofa bed comprising a hollow sofa frame having a front panel, a rear wall and a seat back located forwardly of said rear wall, a foldable mattress support frame having a head section, a center section and a foot section and movable between a generally horizontal sleep position and a folded position, a mattress located on top of said bed frame in said sleep position thereof, said bed frame being foldable to a position in which said center section is on top of said head section and said foot section is on top of said center section, a portion of said mattress being on top of said foot section in said folded position of the frame, a pivoted link assembly connected to and extending between said sofa frame and said head section and supporting said head section for up and down movement in an inclined direction between said sleep position and a storage position within said sofa frame, said head section being of a predetermined length slightly less than the distance between said front panel and said rear wall and said center and foot sections being of lengths less than said predetermined length and slightly less than the distance between said front panel and said seat back, said head section in said storage position being between said front panel and said rear wall with said center and foot sections and said mattress stacked on top.

Claim 8

A sofa bed according to claim 5 wherein said front panel is of predetermined height, said mattress portion on top of said foot section having the top surface thereof located substantially at said height in the storage position of said support frame and mattress.

Claim 9

A sofa bed according to claim 5 wherein said pivoted link assembly includes a pair of links pivotally connected to each side of said head section at longitudinally spaced points thereon, said links being pivotally mounted on said hollow sofa frame and disposed therein.

Claim 10

A sofa bed according to claim 7 further including hinge means connecting said head and center sections, floor supportable leg means connected to said hinge means and operable to support said head and center sections, said link assembly further including lever means pivotally connected to and extending between one of said links and said leg means for folding said leg means against said head section in response to folding of said center section about said hinge means and onto said head section.

Claim 11

A sofa bed according to claim 8 further including additional floor supportable leg means supporting said center and foot sections at the juncture thereof.