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US 10,765,228 B2Granted
Body support cushion having multiple layers of phase change material
AssigneeTempur World, LLC
InventorsTom Mikkelsen, Christopher Anthony Arendoski, Stephen Watson Switzer, Kelly Wood Chandler, Mohamed F. Alzoubi
Life of this patent
Estimating the term…
Abstract
A body support cushion, e.g., mattress, has multiple foam layers, including a viscoelastic foam layer and a reticulated foam layer, and an outer cover. At least one of the foam layers and the outer cover each includes phase change material having latent heat properties that provide two intervals of dermal cooling.
Claims19
A body support cushion, comprising:
- a layered arrangement of foam comprised of an upper layer of viscoelastic comfort foam and a lower layer of viscoelastic comfort foam beneath said upper layer of viscoelastic comfort foam, wherein said upper and lower layers have a density of at least 20 kg/m3 and no more than 150 kg/m3;
- a phase change material disposed in the upper layer of viscoelastic comfort foam;
- said layered arrangement of foam further comprising a support system having a top support layer and a bottom support layer wherein said top support layer has at least one nonplanar portion;
- and,
- a mattress cover also comprising a phase change material (PCM) wherein the amount of PCM in one area is greater than a second area.
2 more elements
A body support cushion, comprising:
- a layered arrangement of foam comprised of at least one layer of viscoelastic comfort foam having a density of at least 20 kg/m3 and no more than 150 kg/m3, said at least one layer of viscoelastic comfort foam having a phase change material;
- wherein the layered arrangement of foam includes a support system having top support layer and a bottom support layer;
- one of the layers of the support system comprises one of a complex or irregular shape;
- wherein an amount of phase change material is also disposed between the at least one layer of viscoelastic comfort foam and the at least one layer of the support system to provide differing cooling capacities;
- a mattress cover on said layered arrangement of foam, said mattress cover having a second phase change material, and wherein amounts of said second phase change material vary along an upper surface of said mattress cover.
2 more elements
A mattress comprising:
- a multilayer foam arrangement comprised of a first non-reticulated viscoelastic layer, a second reticulated, viscoelastic layer, and a third non-reticulated non-viscoelastic layer;
- an outer mattress cover enclosing the multilayer foam arrangement;
- and
- phase change material, contained in the multilayer foam arrangement and the outer mattress cover;
- said phase change material in said outer mattress cover varying in amount along a surface to vary cooling capacity along the surface of said outer mattress cover.
2 more elements
Dependencies are inferred from the claim text.