Sofa-sleeper

Claim 2

A foldable sofa bed fixture adapted to be mounted upon a stationary sofa frame, said fixture comprising a plurality of pivotally interconnected head, body, intermediate and foot bed frame sections, said frame sections each including a pair of opposed side rails, said frame sections being extendable to form a bed and foldable to form a sofa seat, longitudinally and laterally stretched wire fabric means carried by at least said head, body, and intermediate bed frame sections, and the improvement which comprises crossed wires attached at their opposite ends to the side rails of said body section of said frame, said crossed wires being located beneath and partially supporting said fabric means of said body section of said frame, said crossed wires being in tension and attached to the four corners of said body section of said frame, and said Body section of said frame being rigidified by at least two laterally extending cross rails bent downwardly out of the plane of said body section of said frame.

Claim 3

The fixture of claim 1 in which said body section of said frame is rigidified by at least two laterally extending cross rails bent downwardly out of the plane of said body section of said frame.

Claim 4

A foldable sofa bed fixture adapted to be mounted upon a stationary sofa frame, said fixture comprising a plurality of pivotally interconnected head, body, intermediate and foot bed frame sections, said frame sections being extendable to form a bed and foldable to form a sofa seat, said foot frame section terminating in a circular cross section tubular end cross rail, longitudinally and laterally stretched fabric means carried by at least said head, body and intermediate bed frame sections, a plurality of legs pivotally attached to said frame, pivoted linkage means operable to automatically retract said legs into folded relation to said frame sections when the frame sections are folded into a sofa seat and operable automatically to extend said legs when the frame sections are extended into a bed position, and a front cross rail leg pivotally attached to said end cross rail, said leg being crescent shaped in cross section and adapted to be received over said end cross rail when said frame is folded into a sofa and to be extended beneath said cross rail when said frame sections are extended into a bed position.

Claim 5

A foldable sofa bed fixture adapted to be mounted upon a stationary sofa frame, said fixture comprising a plurality of pivotally interconnected head, body, intermediate and foot bed frame sections, said frame sections being extendable to form a bed and foldable to form a sofa seat, said foot frame section terminating in a circular cross section tubular end cross rail, longitudinally and laterally stretched fabric means carried by at least said head, body and intermediate bed frame sections, a plurality of legs pivotally attached to said frame, pivoted linkage means operable to automatically retract said legs into folded relation to said frame sections when the frame sections are folded into a sofa seat and operable automatically to extend said legs when the frame sections are extended into a bed position, and a front cross rail leg pivotally attached to said end cross rail, said leg being crescent shaped in cross section and adapted to be received over said end cross rail when said frame is folded into a sofa and to be extended beneath said cross rail when said frame sections are extended into a bed position.

Claim 6

The foldable sofa-bed fixture of claim 3 which further includes a removable mattress retainer mounted upon said end cross rail, said retainer having generally L-shaped slots adapted to receive means extending from said end cross rail so as to removably secure said retainer on said end cross rail.

Claim 7

The foldable sofa-bed fixture of claim 3 in which said fabric means is attached to said end cross rail by a plurality of helical springs, and a removable mattress retainer mounted upon said end cross rail, said retainer including generally L-shaped slots adapted to receive portions of said helical springs so as to removably secure said retainer on said end cross rail.

Claim 8

A foldable sofa bed fixture adapted to be mounted upon a stationary sofa frame, said fixture comprising a plurality of pivotally interconnected head, body, intermediate and foot bed frame sections, said frame sections being extendable to form a bed and foldable to form a sofa seat, a pair of fixed anchor plates adapted to be attached to said sofa frame and means for supporting said frame sections from said anchor plates, said supporting means comprising, a fixed rear post attached to each of said anchor plates, a pair of first pivoted linkage means connecting each of said posts to a rear corner of said frame, a pair of bed lock plates and means pivotally connecting each of said plates to one side of said body section of said frame, a pair of main pilot arms, each of said main pilot arms being pivotally attached at one end to one of said anchor plates and pivotally attached at the opposite end to one of said bed lock plates, a pair of second pivoted linkage means including a pilot actuating arm connecting each of said first linkage means to each of said bed lock plates, and a pair of third linkage means connecting said foot sections of said frame to said bed lock plates, each of said third linkage means including a bell crank pivotally attached to said body section of said frame, and guide means operatively associated with the bed lock plate attached end of said main pilot arms for guiding said foot section of said bed frame into a position on top of said main pilot arm when said frame sections are folded to form a sofa seat.

Claim 9

A foldable sofa bed fixture adapted to be mounted upon a stationary sofa frame, said fixture comprising a plurality of pivotally interconnected head, body, intermediate and foot bed frame sections, said frame sections being extendable to form a bed and foldable to form a sofa seat, a pair of fixed anchor plates adapted to be attached to said sofa frame and means for supporting said frame sections from said anchor plates, said supporting means comprising, a fixed rear post attached to each of said anchor plates, a pair of first pivoted linkage means connecting each of said posts to a rear corner of said frame, a pair of bed lock plates and means pivotally connecting each of said plates to one side of said body section of said frame, a pair of main pilot arms, each of said main pilot arms being pivotally attached at one end to one of said anchor plates and pivotally attached at the opposite end to one of said bed lock plates, a pair of second pivoted linkage means including a pilot actuating arm connecting each of said first linkage means to each of said bed lock plates, and a pair of third linkage means connecting said foot sections of said frame to said bed lock plates, each of said third linkage means including a bell crank pivotally attached to said body section of said frame, and guide means operatively associated with the bed lock plate attached end of said main pilot arms for guiding said foot section of said bed frame into a position on top of said main pilot arm when said frame sections are folded to form a sofa seat.

Claim 10

The fixture of claim 6 in which said guide means comprises a generally V-shaped channel defined above said main pilot arm by an upwardly and inwardly extending tab on said bed lock plate and an upwardly and outwardly eXtending tab on said pilot actuating arm.

Claim 11

A foldable sofa bed fixture adapted to be mounted upon a stationary sofa frame, said fixture comprising a plurality of pivotally interconnected head, body, intermediate and foot bed frame sections, said frame sections being extendable to form a bed and foldable to form a sofa seat, a pair of fixed anchor plates adapted to be attached to said sofa frame and means for supporting said frame sections from said anchor plates, said supporting means comprising, a fixed rear post attached to each of said anchor plates, a pair of first pivoted linkage means connecting each of said posts to a rear corner of said frame, a pair of bed lock plates and means pivotally connecting each of said plates to one side of said body section of said frame, a pair of main pilot arms, each of said main pilot arms being pivotally attached at one end to one of said anchor plates and pivotally attached at the opposite end to one of said bed lock plates, a pair of second pivoted linkage means including a pilot actuating arm connecting each of said first linkage means to each of said bed lock plates, and a pair of third linkage means connecting said foot sections of said frame to said bed lock plates, each of said third linkage means including a bell crank pivotally attached to said body section of said frame, a bell crank actuating arm extending between said bell crank and said foot section of said frame and a lost motion connection between said bell crank and said bed lock plate.

Claim 12

A foldable sofa bed fixture adapted to be mounted upon a stationary sofa frame, said fixture comprising a plurality of pivotally interconnected head, body, intermediate and foot bed frame sections, said frame sections being extendable to form a bed and foldable to form a sofa seat, a pair of fixed anchor plates adapted to be attached to said sofa frame and means for supporting said frame sections from said anchor plates, said supporting means comprising, a fixed rear post attached to each of said anchor plates, a pair of first pivoted linkage means connecting each of said posts to a rear corner of said frame, a pair of bed lock plates and means pivotally connecting each of said plates to one side of said body section of said frame, a pair of main pilot arms, each of said main pilot arms being pivotally attached at one end to one of said anchor plates and pivotally attached at the opposite end to one of said bed lock plates, a pair of second pivoted linkage means including a pilot actuating arm connecting each of said first linkage means to each of said bed lock plates, and a pair of third linkage means connecting said foot sections of said frame to said bed lock plates, each of said third linkage means including a bell crank pivotally attached to said body section of said frame, a bell crank actuating arm extending between said bell crank and said foot section of said frame and a lost motion connection between said bell crank and said bed lock plate.

Claim 13

The fixture of claim 8 which further includes a pair of center legs pivotally attached to said forward end of said body section of said frame and means including a second actuating arm connecting each of said center legs to said bed lock plate so as to cause the automatic collapse of said center legs beneath said body section of said frame when said fixture is folded into a sofa seat.

Claim 14

The fixture of claim 8 in which each of said pair of first linkage means comprises a stabilizing plate pivotally attached to said head section of said frame and extending downwardly from it when said frame is in an extended bed position and a pivot arm pivotally connected at one end to one of said rear posts and pivotally connected at the opposite end to said stabilizing plate at a point located substantially below the plane of said extended bed frame.

Claim 15

The fixture of claim 8 in which each of said second pivoted linkage means includes a pair of stabilizing bars, each of said bars being pivotally connected at one end to said pilot actuating arm and at the opposite end to said first linkage means.