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US RE49,685 E1Granted
Medical mattress with firmness adjustment
AssigneeDirect Supply, Inc.
InventorsJustin Taylor Morgan, Anthony J. Patrick, Joshua James Jakubowski
Life of this patent
Estimating the term…
Abstract
A mattress for institutional use provides upper and lower surfaces offering different levels of firmness through the use of gradiated firmness in multiple polymer foam layers.
Claims32
A reversible, dual-firmness mattress comprising:
- a mattress body having opposed first and second supporting surfaces each sized and adapted to receive and support a supine individual extending along a mattress length when either of the first and second supporting surfaces is upwardly facing and horizontal, the mattress body including at least three polymer foam layers each having a different firmness and extending along substantial portions of the mattress length, a firmness of the polymer foam layers selected to present presenting a lesser firmness to a supported individual lying on the first supporting surface than to the supported individual lying on the second supporting surface;
- and
- a cover fitting around the mattress body to retain the mattress body therein;
- wherein a first polymer foam layer adjacent to the first supporting surface has a lesser indentation force deflection (IFD) than the polymer foam layer adjacent to the second supporting surface and a third polymer foam layer positioned between the first and second polymer foam layers and having an IFD greater than the IFD of the first polymer foam layer and the second polymer foam layer
- wherein a first polymer foam layer that defines a core layer as positioned between a second and third polymer foam layers has an indentation force deflection (IFD) greater than either of the second and third polymer foam layers and wherein the at least three polymer foam layers are adhered together so that the mattress body is unitary;
- and
- wherein the second polymer foam layer has a lesser IFD than the third polymer foam layer.
4 more elements
A reversible, dual-firmness mattress comprising:
- a mattress body having opposed a first supporting surface generally disposed in a first plane and an opposed second supporting surfaces surface generally disposed in a second plane different than the first plane, one of the first or second supporting surfaces overlying the opposed first or second supporting surface when either of the first or second supporting surfaces is upwardly facing and horizontal, each of the first and second supporting surfaces sized and adapted to receive and support a supine individual extending along a mattress length when either of the first and second supporting surfaces is upwardly facing and horizontal, the first supporting surface comprising a first plurality of outer edges generally disposed within the first plane and the second supporting surface comprising a second plurality of outer edges generally disposed within the second plane that are each individually coplanar with at least one of the outer edges in the first plurality of outer edges, the mattress body including at least three polymer foam layers each having a different firmness and extending along substantial portions of the mattress length, a firmness of the polymer foam layers selected to present a lesser firmness to a supported individual lying on the first supporting surface than to the supported individual lying on the second supporting surface;
- and
- a cover fitting around the mattress body to retain the mattress body therein;
- the mattress further including a bottom cover adjustable to be positioned over at least a portion of the bottom of the mattress when the mattress is in either of two orientations with the opposed first or second supporting surface uppermost, the bottom cover including outwardly exposed anti-slip material.
1 more element
A reversible, dual-firmness mattress comprising:
- a mattress body having opposed a first supporting surface generally disposed in a first plane and an opposed second supporting surfaces surface generally disposed in a second plane different than the first plane, each of the first and second supporting surfaces sized and adapted to receive and support a supine individual extending along a mattress length when either of the first and second supporting surfaces is upwardly facing and horizontal, one of the first or second supporting surfaces vertically overlying the opposed first or second supporting surface when either of the first or second supporting surfaces is upwardly facing and horizontal, the mattress body including at least three polymer foam layers each having a different firmness and extending along substantial portions of the mattress length, a firmness of the polymer foam layers selected to present a lesser firmness to a supported individual lying on the first supporting surface than to the supported individual lying on the second supporting surface;
- and
- a cover fitting around the mattress body to retain the mattress body therein;
- the mattress further including a top cover adjustable to be positioned over at least a portion of the top of the mattress body when the mattress body is in either of two orientations with the opposed first or second supporting surface uppermost, the top cover providing upwardly extending bolsters positionable at opposed left and right edges of the mattress body.
1 more element
A reversible, dual-firmness mattress comprising:
- a mattress body having at least three layers of polymer foam material of different indentation force deflection (IFD) values and adhered together so that the mattress body is unitary, the layers of polymer foam material extending generally parallel to opposed first and second support surfaces of the mattress and presenting a lesser firmness to a supported individual lying on the first support surface that is generally disposed in a first plane than to the supported individual lying on the second support surface that is generally disposed in a second plane different than the first plane, wherein one of the first or second supporting surfaces overlies the opposed first or second supporting surface when either of the first or second supporting surfaces is upwardly facing and horizontal, the volume weighted IFD values in a half of the mattress closest to the first support surface being lower than volume weighted IFD values in a half of the mattress closest to the second support surface;
- wherein the first supporting surface comprises a first plurality of outer edges generally disposed within the first plane and the second supporting surface comprises a second plurality of outer edges generally disposed within the second plane that are each individually coplanar with at least one of the outer edges in the first plurality of outer edges;
- and
- a fabric cover surrounding the mattress body.
1 more element
A reversible, dual-firmness mattress comprising:
- a mattress body having an opposed first supporting surface generally disposed in a first plane and an opposed second supporting surfaces surface generally disposed in a second plane different than the first plane, each of the first and second supporting surface sized and adapted to receive and support a supine individual when the surface is upwardly facing and horizontal, an wherein one of the first or second supporting surfaces overlies the opposed first or second supporting surface when either of the first and second supporting surfaces is upwardly facing and horizontal, wherein the first supporting surface comprises a first plurality of outer edges generally disposed within the first plane and the second supporting surface comprises a second plurality of outer edges generally disposed within the second plane that are each individually coplanar with at least one of the outer edges in the first plurality of outer edges, and a firmness of the first and second supporting surfaces selected to present a greater firmness to a supported individual lying on the first supporting surface than to the supported individual lying on the second supporting surface;
- an inner cover fitting around the mattress body to retain the mattress body therein;
- and
- an outer cover removably positionable over the inner cover to present a slip resistant surface at a bottom of the mattress body and not at a top of the mattress body;
- and
- wherein the inner cover and outer cover the a substantial entirety of the polymer foam layers mattress body.
3 more elements
A reversible, dual-firmness mattress comprising:
- a mattress body having at least three layers of polymer foam material adhered together so that the mattress body is unitary, the at least three layers extending generally parallel to opposed and overlying first and second support surfaces of the mattress when either of the first and second supporting surfaces is upwardly facing and horizontal, the first supporting surface generally disposed within a first plane and comprising a plurality of first supporting surface sides disposed within the first plane, and the second supporting surface generally disposed within a second plane different than the first plane and comprising a plurality of second supporting surface sides disposed within the second plane that are each individually coplanar with a corresponding first supporting surface side, the layers presenting a lesser firmness to a supported individual lying on the first support surface than to the supported individual lying on the second support surface, each of the layers having an indention force deflection (IFD) value such that the total of the IFD values of each given layer or portion thereof located in a first half of the mattress nearest the first support surface times a thickness of the respective given layer or portion thereof located in the first half of the mattress is less than a total of the IFD values of each given layer or portion thereof located in a second half of the mattress nearest the second support surface times a thickness of the respective given layer or portion thereof located in the second half of the mattress;
- a cover surrounding the mattress body;
- and
- wherein a first layer positioned between a second and third layer of the at least three layers has an IFD value greater than the other two layers.
1 more element
A reversible, dual-firmness mattress comprising:
- a mattress body having at least three layers of polymer foam material adhered together so that the mattress body is unitary, the at least three layers extending generally parallel to opposed first and second support surfaces of the mattress, the layers presenting a lesser firmness to a supported individual lying on the first support surface than to the supported individual lying on the second support surface, each of the layers having an indention force deflection (IFD) value such that the total of the IFD values of each given layer or portion thereof located in a first half of the mattress nearest the first support surface times a thickness of the respective given layer or portion thereof located in the first half of the mattress is less than a total of the IFD values of each given layer or portion thereof located in a second half of the mattress nearest the second support surface times a thickness of the respective given layer or portion thereof located in the second half of the mattress;
- a cover surrounding the mattress body;
- and
- wherein a first layer positioned between a second and third layer of the at least three layers has an IFD value greater than the other two layers, and
- wherein IFD values of each layer decrease progressively without increasing from a center of the mattress halfway between the first and second support surfaces to the first and second support surfaces.
2 more elements
A reversible, dual-firmness mattress comprising:
- a mattress body having at least three layers of polymer foam material adhered together so that the mattress body is unitary, the at least three layers extending generally parallel to opposed first and second support surfaces of the mattress, the layers presenting a lesser firmness to a supported individual lying on the first support surface than to the supported individual lying on the second support surface, each of the layers having an indention force deflection (IFD) value such that the total of the IFD values of each given layer or portion thereof located in a first half of the mattress nearest the first support surface times a thickness of the respective given layer or portion thereof located in the first half of the mattress is less than a total of the IFD values of each given layer or portion thereof located in a second half of the mattress nearest the second support surface times a thickness of the respective given layer or portion thereof located in the second half of the mattress;
- a cover surrounding the mattress body,
- wherein a first layer positioned between a second and third layer of the at least three layers has an IFD value greater than the other two layers, and,
- wherein each of the layers has an IFD value such that the total of the IFD values of each given layer or portion thereof located in a first half of the mattress nearest the first support surface times a thickness of the respective given layer or portion thereof located in the first half of the mattress is at least 50% less than the total of the IFD values of each given layer or portion thereof located in a second half of the mattress nearest the second support surface times a thickness of the respective given layer or portion thereof located in the second half of the mattress.
1 more element
A reversible, dual-firmness mattress comprising:
- a mattress body having at least three layers of polymer foam material adhered together so that the mattress body is unitary and adapted to flex along its length, the at least three layers extending generally parallel to opposed first and second support surfaces of the mattress, the layers adapted to present a lesser firmness to a supported individual lying on the first support surface than to the supported individual lying on the second support surface, each of the layers having an indention force deflection (IFD) value such that the total of the IFD values of each given layer or portion thereof located in a first half of the mattress nearest the first support surface times a thickness of the respective given layer or portion thereof located in the first half of the mattress is less than a total of the IFD values of each given layer or portion thereof located in a second half of the mattress nearest the second support surface times a thickness of the respective given layer or portion thereof located in the second half of the mattress;
- and
- a cover surrounding the mattress body;
- wherein a first layer positioned between other two layers has an IFD value greater than the other two layer;
- and
- further including indicia indicating relative firmness of the first and second support surfaces attached to the reversible, dual firmness mattress.
3 more elements
Dependencies are inferred from the claim text.