Abstract: A folding bed base apparatus may include a central frame assembly, a head section, and a foot section. The head section and foot section may be pivotally attached to the central frame assembly such that the folding bed base apparatus may fold to a folded configuration and unfold to an unfolded configuration. The central frame assembly may include a first U-shaped foot rest and a second U-shaped foot rest. The U-shaped foot rests may allow the folding bed base apparatus to stand upright when in the folded configuration. The head section may include a first pivot bar and pivot bar stops which frictionally-obstruct the head section from unfolding past the unfolded configuration. The foot section may include a second pivot bar and pivot bar stops which frictionally-obstruct the foot section from unfolding past the unfolded configuration. Methods for unfolding a folded folding bed base apparatus are disclosed.

Abstract: A foldable mattress support has an adjustable inner frame with a ratchet support for raising the head of a mattress. Legs are incorporated into the side and end bars of the mattress support. Upper and lower bars of the support are pivotally attached to the vertical plate of a hinge. Bolts oriented along axes of rotation pass through the bars and through the vertical plate. A first upper bar pivots about a first axis; a second upper bar pivots about a second axis; a first lower bar pivots about a third axis; and a second lower bar pivots about a fourth axis. Each of the axes is orthogonal to the vertical plate, and the third axis is spaced farther apart from the fourth axis than the first axis is spaced apart from the second axis. The distal ends of the upper and lower bars are pivotally attached to end bars.

Abstract: A foldable mattress support has an adjustable inner frame with a ratchet support for raising the head of a mattress. Legs are incorporated into the side and end bars of the mattress support. Upper and lower bars of the support are pivotally attached to the vertical plate of a hinge. Bolts oriented along axes of rotation pass through the bars and through the vertical plate. A first upper bar pivots about a first axis; a second upper bar pivots about a second axis; a first lower bar pivots about a third axis; and a second lower bar pivots about a fourth axis. Each of the axes is orthogonal to the vertical plate, and the third axis is spaced farther apart from the fourth axis than the first axis is spaced apart from the second axis. The distal ends of the upper and lower bars are pivotally attached to end bars.

Abstract: A foldable mattress support is made by covering a metal frame with a fabric covering. The metal frame includes two sections that fold together at two hinges. A first section includes first upper and lower frames, and a second section includes second upper and lower frames. Each of the upper and lower frames is pivotally attached to a hinge. A bolt that is oriented along a first axis passes through the first upper frame and through a plate of the hinge. The first upper frame pivots about a first axis; the second upper frame pivots about a second axis; the first lower frame pivots about a third axis; and the second lower frame pivots about a fourth axis. Each of the axes is orthogonal to the plate, and the third axis is spaced farther apart from the fourth axis than the first axis is spaced apart from the second axis.

Abstract: A foldable mattress support with legs includes a metal frame with a fabric covering. The metal frame includes first upper and lower frames and second upper and lower frames. Each of the upper and lower frames is pivotally attached to a vertical plate of a hinge. A bolt that is oriented along a first axis passes through the first upper frame and through the vertical plate. A leg attaches through the fabric covering to a base plate of the hinge. The first upper frame pivots about a first axis; the second upper frame pivots about a second axis; the first lower frame pivots about a third axis; and the second lower frame pivots about a fourth axis. Each of the axes is orthogonal to the vertical plate, and the third axis is spaced farther apart from the fourth axis than the first axis is spaced apart from the second axis.

Abstract: A foldable mattress support is made by covering a metal frame with a fabric covering. The metal frame includes two sections that fold together at two hinges. A first section includes first upper and lower frames, and a second section includes second upper and lower frames. Each of the upper and lower frames is pivotally attached to a hinge. A bolt that is oriented along a first axis passes through the first upper frame and through a plate of the hinge. The first upper frame pivots about a first axis; the second upper frame pivots about a second axis; the first lower frame pivots about a third axis; and the second lower frame pivots about a fourth axis. Each of the axes is orthogonal to the plate, and the third axis is spaced farther apart from the fourth axis than the first axis is spaced apart from the second axis.

Abstract: A bedstead assembly includes a support frame and a top plate unit disposed on the support frame. The support frame includes a rectangular foldable frame member convertible between unfolded and folded states. The foldable frame member includes a plurality of parallel non-foldable plates and a plurality of pairs of foldable plates. Any two adjacent non-foldable plates interconnect pivotally one corresponding pair of foldable plates to define a void space when the foldable frame member is in the unfolded state. The void spaces in the foldable frame member are arranged along a direction parallel to the foldable plates. Pivotable plate portions of the foldable plates are perpendicular to the non-foldable plates when the foldable frame member is in the unfolded state, and are parallel to the non-foldable plates when the foldable frame member is in the folded state.

Abstract: An improved collapsible support structure having, in an erect position, a pair of vertical members interconnected by at least one collapsible or foldable support mechanism. The collapsible support mechanism has upper and lower substantially horizontal collapsible connecting members that are interconnected by diagonal support members forming an "X" positioned approximately halfway between the pair of vertical members. Each of the horizontal members is formed of a plurality of pivotally interconnected elements and at least one of the elements of one of the members is modified to maintain a desired angular relationship between the elements. A plurality of the collapsible support structures are combined together or interconnected to form improved collapsible or folding devices.

Abstract: This invention relates to folding beds and aims at correcting certain shortcomings of all other folding beds. The invention contains the mechanism of a Space-saving Folding Bed the legs of which at both ends automatically unfold when the bed is unfolded for use, and also automatically fold onto the frame when the bed is folded up.