A frame includes a middle unit, a first unit and a second unit. Each of the middle, first and second units includes pivotally connected longitudinal members. Each of the first and second units also includes lateral members pivotally connected to its longitudinal members and the middle unit. The lateral and longitudinal members of the middle, first and second units are foldable onto each other, making the frame very compact when folded. The lateral members of at least one of the first and second units are adjustable in length, allowing the frame to adjust its dimension in a lateral direction when unfolded. Additionally or optionally, at least one longitudinal member of the first unit and at least one longitudinal member of the second unit are adjustable in length, allowing the frame to adjust its dimension in a longitudinal direction when unfolded.

An expandable and collapsible support device for multiple use enables attaining an expanded open state for use or return to a compact closed state in mere seconds. The device includes an accordion-style frame that expands laterally from a compact closed state to an expanded open state for use, and a material support cover forming the top of the device and attachable to the frame to provide a support surface above ground level for the device.

A bed frame includes a frame, bed legs, and a bed plank support frame. The frame includes two side boards, a head board, and a tail board. Respective bottoms of opposing sides of the two side boards are provided with a plurality of U-shaped connecting members, respectively. The bed plank support frame includes a plurality of support members. Two ends of each support member are connected to U-shaped connecting grooves of the corresponding U-shaped connecting members of the two side boards, respectively. The bed plank support frame is sunk when in use. After a bed plank is placed, there is a certain distance between the bed plank and the top of the frame, so that the frame can form four stop sides. After a mattress is placed on the bed frame, the mattress is restrained in the frame, not sliding.

Partially assembled mattress foundations, assembled mattress foundation and methods of manufacture generally include laminating a single piece fabric covering to a foundation frame including a planar support, side fame members, and transverse frame members. During assembly, the laminated fabric covering functions as a hinge such that the operator can fold the various side frame members and transverse frame members about a peripheral edge of the planar support to perpendicular orient the frame members relative to the planar support and form a rectangular shaped fabric covered foundation frame. Corner guards are attached to respective ends of the side frame members and the transverse frame members to form the corners of the foundation frame, wherein the respective ends are at 90 degrees relative to one another, and wherein the corner guard can include an arcuate exterior face.

Disclosed are foldable bed frames and beds. A foldable bed frame includes longitudinal bars, supporting assemblies to support the longitudinal bars, and links to couple one or more supporting assemblies with the longitudinal bars. Each supporting assembly includes vertical and crossed bars. When the beds are unfolded and in use, the vertical bars support the longitudinal bars and bear majority of the load. As such, the bed frames and beds are stable and safe to use.

An automatic vertically-movable foldable bed includes a body frame; a leg frame connected to one side of the body frame; a plurality of foldable legs having upper ends pivotably connected to the leg frame; an actuator connected to the upper ends of the foldable legs; a vertical movement guide provided at one side of the body frame and extending in a vertical direction; a first guide roller provided at a position of the leg frame corresponding to a position of the vertical movement guide; a sliding guide rail provided at each of both opposing sides of a bottom portion of the body frame; and a second guide roller provided at one end of the leg frame at a position thereof corresponding to a position of the sliding guide rail.

A foldable supporting device includes first and second supporting frames, first and second movable elements, a first foldable structure, and first and second rotatable elements. The first supporting frame includes a first upper part and a first lower part. The second supporting frame includes a second upper part and a second lower part. The first movable element and the second movable elements are respectively movable along the first lower part and the second lower part. The first foldable structure connects to the first movable element and the second movable element. The first rotatable element is connected to the first supporting frame and the first foldable structure. The second rotatable element is connected to the second supporting frame and the first foldable structure. The first rotatable element and the second rotatable element are respectively rotatable with respect to the first supporting frame and the second supporting frame.

Systems and methods are provided for grounding a person lying on a mattress. Such grounding may connect a user's body to the earth and enable electrical discharge off the human body. The systems and methods may include a mattress pad having conductive inner and outer layers. The mattress pad may also include an insulating interior layer having a flame-retardant layer, a first foam layer, and a second foam layer. The mattress pad may also include a conductive edge ribbon configured to electrically couple the inner and outer layers, as well as a grounding terminal. A grounding cable may be realized to ground the inner layer, outer layer, and conductive edge ribbon. The grounded mattress then grounds the human body, allowing it to get closer to a natural electrical potential. This can reduce static electricity, static shocks and enhance quality sleep. The mattress will also improve shielding from electromagnetic fields (EMFs).

An automatic vertically-movable foldable bed includes a body frame; a leg frame connected to one side of the body frame; a plurality of foldable legs having upper ends pivotably connected to the leg frame; an actuator connected to the upper ends of the foldable legs; a vertical movement guide provided at one side of the body frame and extending in a vertical direction; a first guide roller provided at a position of the leg frame corresponding to a position of the vertical movement guide; a sliding guide rail provided at each of both opposing sides of a bottom portion of the body frame; and a second guide roller provided at one end of the leg frame at a position thereof corresponding to a position of the sliding guide rail.

A foldable stand includes first and second supports, each having first and second portions. The foldable stand also includes first and second leg assemblies, each having a pair of crossed bars. The pair of crossed bars of the first leg assembly is pivotally connected to the first portions of the first and second supports. The pair of crossed bars of the second leg assembly is pivotally connected to the second portions of the first and second supports. The foldable stand further includes at least one locking assembly to selectively lock the pair of crossed bars of the first or second leg assembly to prevent the foldable stand from accidental folding.