Levitation devices are disclosed for use with beds. In one embodiment, the levitation device is configured to facilitate rotation of a mattress with respect to a box spring. In another embodiment, the levitation device is configured to facilitate making a bed which allows sheets and blankets to be tucked between the mattress and the box spring without the need to lift the mattress. In a third embodiment, the levitation device functions as a hybrid device and can be used for making a bed or rotating a mattress.

A system can include a zipper that connects a mattress to a bed foundation. For example, the zipper can extend from a head end to a foot end of an adjustable foundation. For another example, a zipper can connect to a mattress along a seam of the mattress and/or to a foundation along a seam of a foundation. For another example, a first zipper can connect the mattress core to a second zipper and the second zipper can connect a foundation to the first zipper. For another example, first and second zippers can be substantially vertically aligned.

Body support cushions, such as mattresses, are disclosed. The cushions comprise a plurality of separate and distinct consecutive layers overlying over each other in a depth direction. Each layer includes thermal effusivity enhancing material with a thermal effusivity greater than or equal to 2,500 Ws.sup.0.5/(m.sup.2K) and a solid-to-liquid phase change material (PCM) with a phase change temperature within the range of about 6 to about 45 degrees Celsius. The total thermal effusivity of each of the cooling layers increases with respect to each other in the depth direction, and the total mass of the PCM of each of the cooling layers increases with respect to each other along the depth direction. At least one layer of the cooling layers includes a gradient distribution of the mass of the PCM and the amount of the thermal effusivity enhancing material thereof that increases in the depth direction.

Body support cushions, such as mattresses, are disclosed. The cushions comprise a plurality of separate and distinct consecutive layers overlying over each other in a depth direction. Each layer includes thermal effusivity enhancing material with a thermal effusivity greater than or equal to 2,500 Ws.sup.0.5/(m.sup.2K) and a solid-to-liquid phase change material (PCM) with a phase change temperature within the range of about 6 to about 45 degrees Celsius. The total thermal effusivity of each of the cooling layers increases with respect to each other in the depth direction, and the total mass of the PCM of each of the cooling layers increases with respect to each other along the depth direction. At least one layer of the cooling layers includes a gradient distribution of the mass of the PCM and the amount of the thermal effusivity enhancing material thereof that increases in the depth direction.

A mattress rotating system for lifting and rotating a mattress includes a box spring that has a top side, a bottom side and a perimeter wall that is attached to and extends between the top side and the bottom side. The perimeter wall includes a front side, a back side, a first lateral side and a second lateral side. The box spring has an opening that extends through the top side. A lifting unit is mounted in the box spring and is extendable upwardly from the box spring. The lifting unit is rotatable relative to the box spring. A mattress is positioned on the lifting unit and the lifting unit is actuated to lift the mattress upwardly from the box spring such that the mattress is rotatable with respect to the box spring.

A mattress rotating system for lifting and rotating a mattress includes a box spring that has a top side, a bottom side and a perimeter wall that is attached to and extends between the top side and the bottom side. The perimeter wall includes a front side, a back side, a first lateral side and a second lateral side. The box spring has an opening that extends through the top side. A lifting unit is mounted in the box spring and is extendable upwardly from the box spring. The lifting unit is rotatable relative to the box spring. A mattress is positioned on the lifting unit and the lifting unit is actuated to lift the mattress upwardly from the box spring such that the mattress is rotatable with respect to the box spring.

A product upon which a person may lie down that includes a mattress whose underside has a peripheral flange that bounds a recessed cavity into which is placed an adjustable mechanism that can be actuated to raise or lower the head and foot portions of the mattress. The adjustable mechanism in its flattened state is hidden from view from the sides of the mattress by the peripheral flange.

A product upon which a person may lie down that includes a mattress whose underside has a peripheral flange that bounds a recessed cavity into which is placed an adjustable mechanism that can be actuated to raise or lower the head and foot portions of the mattress. The adjustable mechanism in its flattened state is hidden from view from the sides of the mattress by the peripheral flange.

Mattress assemblies including at least one encapsulated panel including a layer of fibers and/or foam saturated with a heat absorbing material. The layer is completely encapsulated with a liquid impermeable and flexible material. The heat absorbing material is not microencapsulated.

Mattress assemblies including at least one encapsulated panel including a layer of fibers and/or foam saturated with a heat absorbing material. The layer is completely encapsulated with a liquid impermeable and flexible material. The heat absorbing material is not microencapsulated.