EP2373198A1 - Body support with non-planar top surface - Google Patents
Body support with non-planar top surfaceInfo
- Publication number
- EP2373198A1 EP2373198A1 EP09835710A EP09835710A EP2373198A1 EP 2373198 A1 EP2373198 A1 EP 2373198A1 EP 09835710 A EP09835710 A EP 09835710A EP 09835710 A EP09835710 A EP 09835710A EP 2373198 A1 EP2373198 A1 EP 2373198A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- body support
- foam
- peaks
- visco
- troughs
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
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- 239000000463 material Substances 0.000 description 18
- 229920001247 Reticulated foam Polymers 0.000 description 14
- 210000004027 cell Anatomy 0.000 description 9
- 230000006870 function Effects 0.000 description 8
- 239000006261 foam material Substances 0.000 description 5
- 230000004043 responsiveness Effects 0.000 description 4
- 239000003190 viscoelastic substance Substances 0.000 description 3
- 230000000007 visual effect Effects 0.000 description 3
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- 239000011496 polyurethane foam Substances 0.000 description 2
- 230000000284 resting effect Effects 0.000 description 2
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- 238000004088 simulation Methods 0.000 description 2
- 229920000079 Memory foam Polymers 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000036760 body temperature Effects 0.000 description 1
- DQXBYHZEEUGOBF-UHFFFAOYSA-N but-3-enoic acid;ethene Chemical compound C=C.OC(=O)CC=C DQXBYHZEEUGOBF-UHFFFAOYSA-N 0.000 description 1
- 210000001217 buttock Anatomy 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
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Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C27/00—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas
- A47C27/14—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas with foamed material inlays
- A47C27/142—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas with foamed material inlays with projections, depressions or cavities
- A47C27/146—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas with foamed material inlays with projections, depressions or cavities on the outside surface of the mattress or cushion
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C27/00—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas
- A47C27/14—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas with foamed material inlays
- A47C27/148—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas with foamed material inlays of different resilience
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C27/00—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas
- A47C27/14—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas with foamed material inlays
- A47C27/15—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas with foamed material inlays consisting of two or more layers
Definitions
- body support includes without limitation any deformable element or structure adapted to support one or more parts of (or the entire body of ) a human or animal in one or more positions.
- body supports include but are not limited to mattresses, pillows, and cushions of any type, including those for use in beds, seats, and other applications.
- Body supports are often constructed entirely or partially out of foam material.
- foam material For example, polyurethane foam is commonly used in many mattresses, pillows, and cushions, and can be used alone or in combination with other types of cushion materials.
- visco-elastic material is used, providing the body support with an increased ability to conform to a user and to thereby distribute the weight or other load of the user.
- Some visco-elastic body support materials are also temperature sensitive, thereby also enabling the body support to change firmness based at least in part upon the temperature of the body part(s) supported thereon.
- reticulated foams both visco-elastic and non- visco-elastic have also gained in popularity.
- Reticulated foams can provide added benefits of increased heat and moisture transfer due in large part to the relatively porous nature of reticulated foams. These characteristics are often highly desirable in body support applications of all types.
- Some embodiments of the present invention provide a body support having a layer of foam material adapted for use as the upper-most surface of the body support and having a top surface and a bottom surface, wherein the top surface of the body support is a non-planar surface defined at least in part by a series of waves extending across at least part of the length or width of the body support and having dimensions selected to visually communicate softness of the body support and/or to simulate a billowy user body support surface.
- the body support includes visco-elastic foam and/or comprises reticulated foam.
- the body support can itself have two or more layers, the top layer of which has the non-planar surface.
- the body support can be adapted for use alone or in combination with one or more underlying body support layers, any of which can include foam of any type (e.g., visco-elastic or non- visco-elastic, reticulated or non-reticulated, and the like), and which can be permanently or releasably attached to the body support, or which can support the body support without being attached thereto.
- foam of any type e.g., visco-elastic or non- visco-elastic, reticulated or non-reticulated, and the like
- Some embodiments of the invention provide a body support including a visco- elastic or other foam layer having a length and a non-planar top surface with peaks and troughs that define a horizontal distance between peaks and a vertical height between a peak and a trough.
- the peaks and troughs of the non-planar top surface form sinusoidal or domed waves.
- a density of the foam at the peaks is substantially the same as the density of the foam at the troughs.
- a ratio of the length to the distance can be from 10 to 50, optionally from 15 to 40.
- the ratio of length to distance can be from 20 to 30 and optionally from 20 to 25.
- Some embodiments of the invention provide a body support including a visco- elastic or other foam layer having a length and a non-planar top surface with peaks and troughs that define a horizontal distance between peaks and a vertical height between a peak and a trough.
- the peaks and troughs of the non-planar top surface form sinusoidal or domed waves.
- a ratio of the distance to the height is from 13 to 66 or optionally from 20 to 52.
- the ratio of the distance to the height can be from 26 to 40 and can optionally be from 26 to 33.
- a density of the foam at the peaks is substantially the same as the density of the foam at the troughs.
- FIG. 1 is a perspective view of a body support according to an embodiment of the present invention.
- FIG. 2 is a perspective view of a body support according to another embodiment of the present invention.
- Fig. 3 is a side view of a portion of the body support of Fig. 2.
- top and bottom are used for the purpose of description and are not intended to indicate or imply relative importance, significance, unless otherwise specified.
- the term “top” does not necessarily refer to the top most layer, and “bottom” does not necessarily refer to the bottom most layer.
- the use of "including,” “comprising,” or “having” and variations thereof herein is meant to encompass the items listed thereafter and equivalents thereof as well as additional items.
- the terms “connected,” “coupled,” and variations thereof herein are used broadly and encompass direct and indirect connections and couplings.
- the terms “connected” and “coupled” and variations thereof are not restricted to physical or mechanical connections or couplings.
- Body supports 10 according to two different embodiments of the present invention are illustrated schematically in Figs. 1-3. Both illustrated body supports 10, 1OA are defined by one or more layers of foam material adapted to be used alone (e.g., on a floor, frame, or other structure) or upon another body support (e.g., a mattress). In both applications, the body supports 10, 1OA define the top layer(s) of a body support upon which a user lies.
- each of the body supports 10, 1OA can itself define a mattress (e.g., a futon), can be part of a mattress (i.e., define the uppermost layer(s) or pillow top of a mattress that has one or more underlying layers), or can define a mattress topper or overlay intended either for releasable attachment to an existing mattress or for resting upon an existing mattress without being attached thereto, depending upon the manner in which the body support 10, 1OA is used.
- the features of the body supports 10, 1OA described and/or illustrated herein are applicable to any other type of body support having any size and shape. Accordingly, as used herein, the term "body support” is intended to refer to any and all of such structures, unless otherwise specified.
- the body support 10 illustrated in Fig. 1 includes a top surface 12 positioned to face and support a user thereon, and a bottom surface 14 adapted to either rest directly upon a floor surface, frame, foundation, or other rigid support, or upon another body support or portion of a body support.
- the top surface 12, 12A is substantially non-planar and the bottom surface 14 is substantially planar.
- either or both of the top and bottom surfaces 12, 14 can include one or more convolutions or other non-planar shapes.
- the body support 10 includes a layer of foam material defining the uppermost (non-planar) surface of the body support 10, and can have one or more additional layers (not shown) immediately beneath the layer of foam.
- the body support 10 can be manufactured of any type of foam, including without limitation visco-elastic and non-visco- elastic foam, reticulated and non-reticulated foam, polyurethane foam, latex foam, any expanded polymer (e.g., expanded ethylene vinyl acetate, polypropylene, polystyrene, or polyethylene), and the like.
- the layer(s) beneath this uppermost layer can also be manufactured of any type of foam (including those mentioned above), any other type of body support material, and any combination of these materials.
- the resulting body support of two or more layers can be a single integral unit permanently attached together in any conventional manner (e.g., by adhesive or cohesive bonding material, by being bonded together during formation of the layers, by stitches extending at least partially through the layers, or in any other suitable manner).
- the foam of the body supports 10, 1OA shown in Figs. 1- 3 is non-reticulated visco-elastic foam, sometimes referred to as "memory foam” or "low resilience foam”.
- the foam of the body support 10, 1OA can comprise reticulated visco-elastic foam, or reticulated or non-reticulated non- visco-elastic foam.
- Reticulated foam (visco-elastic or otherwise) is a cellular foam structure in which the cells of the foam are essentially skeletal. In other words, the cells of the reticulated foam are each defined by a plurality of apertured windows surrounded by cell struts.
- the cell windows of reticulated foam can be entirely gone (leaving only the cell struts) or substantially gone.
- the foam is considered "reticulated” if at least 50% of the windows of the cells are missing (i.e., windows having apertures therethrough, or windows that are completely missing and therefore leaving only the cell struts).
- Such structures can be created by destruction or other removal of cell window material, or preventing the complete formation of cell windows during the manufacturing process of the foam.
- the visco-elastic nature of the foam material of the body supports 10, 1OA illustrated in Figs. 1-3 can provide a relatively soft and comfortable substrate for a user's body or body portion (hereinafter referred to simply as "body” for ease of description). Also, by its nature, the visco-elastic foam body supports 10, 1OA at least partially conforms to the user's body to distribute force applied thereby.
- the non-planar surface of the illustrated visco-elastic body supports 10, 1OA (described in greater detail below) will not result in discomfort to a user, as the non-planar surface will conform to the user's body with minimal to no resistance. Accordingly, the top surface 12, 12A of the visco-elastic body support 10, 1OA can be made non-planar to perform the functions described below while not sacrificing the function of properly supporting the user.
- the visco-elastic foam of the body support 10, 1OA has a hardness of at least about 30 N and no greater than about 175 N for desirable softness and body-conforming qualities. In other embodiments, the visco-elastic foam of the body support 10, 1OA has a hardness of at least about 40 N and no greater than about 110 N for this purpose. In still other embodiments, the visco-elastic foam of the body support 10, 1OA has a hardness of at least about 40 N and no greater than about 75 N.
- the hardness of a material referred to herein is measured by exerting pressure from a plate against a sample of the material having length and width dimensions of 40 centimeters (cm) each (defining a surface area of the sample of material), and a thickness of 5 cm to a compression of 40% of an original thickness of the material at approximately room temperature (e.g., 21-23 Degrees Celsius), wherein the 40% compression is held for a set period of time following the International Organization of Standardization (ISO) 2439 hardness measuring standard.
- ISO International Organization of Standardization
- the visco-elastic foam of each illustrated body support 10, 1OA can also have a density providing a relatively high degree of material durability.
- the density of the visco- elastic foam of each illustrated body support 10, 1OA can also impact other characteristics of the foam, such as the manner in which the body support 10, 1OA responds to pressure and the feel of the foam.
- the foam of the body support 10, 1OA is visco- elastic, and has a density of no less than about 30 kg/m and no greater than about 175 kg/m .
- this body support foam has a density of at least about 40 kg/m 3 and no greater than about 130 kg/m 3 .
- this body support foam has a density of at least about 55 kg/m 3 and no greater than about 115 kg/m 3 .
- the visco-elastic foam of the body supports 10, 1OA can be selected for responsiveness to any range of temperatures.
- a temperature responsiveness in a range of a user's body temperatures can provide significant advantages.
- a visco-elastic foam selected for the body support 10, 1OA can be responsive to temperature changes above at least about 10 0 C.
- the visco-elastic foam selected for the body supports 10, 1OA can be responsive to temperature changes within a range of at least about 15 0 C.
- a material is considered "responsive" to temperature changes if the material exhibits a change in hardness of at least 10% measured by ISO Standard 3386 through the range of temperatures between 10 and 30 degrees Celsius.
- either body support 10, 1OA can be constructed of reticulated foam (visco-elastic or otherwise), rather than the non-reticulated visco-elastic foam just described.
- airflow characteristics of the reticulated foam can be significantly different, as can the material characteristics of the reticulated foam. More detail regarding the features and characteristics (e.g., hardness, density, and temperature sensitivity) of reticulated foam used in some embodiments of the present invention is presented below.
- body supports 10, 1OA comprising such foam are able to transfer heat away from a source of heat (e.g., a user's body) on the body support 10, 1OA, thereby helping to prevent one or more areas of the body support 10, 1OA from reaching an undesirably high temperature.
- a source of heat e.g., a user's body
- the reticulated structure of the foam enables significantly higher airflow into, out of, and through the body support 10, 1OA - a characteristic of the body support 10, 1OA that can reduce heat in the body support.
- the reticulated structure of the foam can function as a wick, drawing moisture from an exterior area of the body support 10, 1OA (e.g., adjacent the user's body thereon) to locations away from the user's body, thereby increasing user comfort.
- the body support 10, 1OA comprises reticulated visco-elastic foam
- the visco-elastic nature of the foam provides desirable tactile contact and pressure responsiveness for user comfort.
- reticulated visco-elastic foam of some embodiments can have a reduced hardness level, thereby providing a relatively soft and comfortable surface for a user's body.
- the body support 10, 1OA can also at least partially conform to the user's body, thereby distributing the force applied by the user's body upon the body support 10, 1OA.
- the body support 10, 1OA of reticulated visco-elastic foam has a hardness of at least about 20 N and no greater than about 150 N for desirable softness and pressure-responsive qualities. In other embodiments, a body support 10, 1OA having a hardness of at least about 30 N and no greater than about 100 N is utilized for this purpose. In still other embodiments, a body support 10, 1OA having a hardness of at least about 40 N and no greater than about 85 N is utilized.
- Body supports 10, 1OA manufactured from reticulated visco-elastic foam can also have a density providing a relatively high degree of material durability.
- the density of the reticulated visco-elastic foam can also impact other characteristics of the foam, such as the manner in which the body support 10, 1OA responds to pressure, and the feel of the foam.
- the reticulated visco-elastic foam of the body support 10, 1OA has a density of no less than about 30 kg/m 3 and no greater than about 175 kg/m 3 .
- the reticulated visco-elastic foam of the body support 10, 1OA has a density of at least about 45 kg/m 3 and no greater than about 130 kg/m 3 .
- the reticulated visco-elastic foam of the body support 10, 1OA has a density of at least about 50 kg/m 3 and no greater than about 120 kg/m 3 .
- the reticulated visco-elastic foam can be selected for responsiveness (as defined above) to any range of temperatures, including those described above.
- the top surface 12, 12A of both body supports 10, 1OA is non-planar, and includes a plurality of peaks 16, 16A and troughs 18, 18A defining a wave- shaped top surface 12, 12A of the body support 10, 1OA.
- the peaks 16, 16A and troughs 18, 18A are regularly spaced along the body support 10, 1OA.
- the peaks 16, 16A and troughs 18, 18A are irregularly spaced.
- the peaks 16, 16A and troughs 18, 18A of the body supports 10, 1OA can be defined by a number of different wave shapes, including the domed waves shown in Fig. 1 and the sinusoidal waves shown in Figs. 2 and 3.
- the wave shape of the body supports 10, 1OA is selected to visually communicate softness of the body support 10, 1OA and/or to simulate a billowy user body support 10, 1OA, both of which are desirable attributes for many users.
- Other wave shapes are capable of performing the same functions, and fall within the spirit and scope of the present invention.
- Factors that can be important to visually communicate softness of the body support 1OA and/or to simulate a billowy user body support 1OA can include the distance D between adjacent peaks 16A in a body support 1OA, the height of the peaks 16A (measured from trough 18A to peak 16A, or the difference between H2 and Hl in Fig. 3), and the ratio of these values (e.g., D:(H2-H1)).
- the distance D between adjacent peaks 16A is no less than about 260mm and is no greater than about 660mm to perform the visual communication and simulation functions described above. In other embodiments, this distance D is no less than about 400mm and is no greater than about 520mm to perform these functions.
- the peak height (H2-H1) is no less than about 10mm to perform the visual communication and simulation functions described above. In other embodiments, this peak height is no less than about 20 mm to perform these functions.
- a ratio of the distance D to the peak height (H2-H1) is from 13 to 66 or optionally from 20 to 52.
- the ratio of the distance to the height can be from 26 to 40 and can optionally be from 26 to 33.
- the distance D between adjacent peaks 16A may vary such that the distance D is different along one portion of the body support 1OA when compared to the distance D along another portion of the body support 1OA. This may be especially advantageous if the body support 1OA is configured to support bodies exerting different pressures at different locations on the body support 1OA.
- the peak height (H2-H1) may vary along the body support 1OA such that the peak height (H2-H1) along one portion of the body support 1OA is different when compared to the peak height (H2-H1) along another portion of the body support 1OA.
- the top surface 12, 12A of the body supports 10, 1OA are configured to visually communicate softness and to simulate a billowy body support 10, 1OA. As also described above, this is accomplished by shaping the top surface 12, 12A to have peaks 16, 16A and troughs 18, 18A.
- This shaping can be performed by directly forming the foam of the body support 10 (rather than, for example, by using quilting techniques), such as by cutting a slab of foam to have the peaks 16, 16A and troughs 18, 18A, by molding foam to have such peaks 16, 16A and troughs 18, 18A, and by other manufacturing methods.
- the density of the foam at the peaks 16, 16A and the density of the foam at the troughs 18, 18A is substantially similar, and in some embodiments is identical.
- the plurality of peaks 16, 16A and troughs 18, 18A in the illustrated embodiments of Figs. 1-3 extend across the width of the body supports 10, 1OA, and run in succession along the length of the body supports 10, 1OA.
- the non-planar surface can be formed from a plurality, and in some cases a pattern, of such projections extending orthogonally with respect to the direction shown in Figs. 1-3 (i.e., peaks 16, 16A and troughs 18, 18A extending along the length of the body support 10, 1OA, and running in succession along the width of the body support 10, 10A). Still other directions in which the peaks 16, 16A and troughs 18, 18A can run are possible, and fall within the spirit and scope of the present invention.
- the non-planar top surface 12, 12A of each body support 10, 1OA is uniform across the width and length of the body support 10, 1OA.
- the non-planar top surface 12, 12A may not extend fully across the length and/or width of the body support 10, 1OA.
- the non-planar top surface 12, 12A may not be uniform across the full width and length of the body support 10, 1OA, but can instead also include a combination of peaks, troughs, waves, bumps, and/or other projections and recesses extending across the whole width and length, or alternatively across only a portion of the width and/or length of the body support 10, 1OA. Accordingly, there may be one or more portions of the top surface of the body support 10, 1OA which are planar.
- the top surfaces 12, 12A of both embodiments are shown as having five peaks 16 and four troughs 18. However, in other embodiments, these top surfaces can have less or more than five peaks and four troughs.
- some mattress-type body supports according to the present invention utilize no fewer than two peaks and no greater than ten peaks across the length L of the body support 10. In other mattress-type body support embodiments, no fewer than four peaks and no greater than six peaks are used across the length L of the body support 10. In still other mattress-type body support embodiments, no fewer than four peaks and no greater than five peaks are used across the length L of the body support 10.
- the mattress-type body support 10 has four peaks used to convey the visual impression of proper user support in particular areas of the body support 10 (e.g., head, back, buttocks, and legs).
- a ratio of the length L of the body support 10 to the distance D between adjacent peaks 16A can be from 10 to 50, optionally from 15 to 40.
- the ratio of length to distance can be from 20 to 30 and optionally from 20 to 25.
Landscapes
- Mattresses And Other Support Structures For Chairs And Beds (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US14072108P | 2008-12-24 | 2008-12-24 | |
US14277709P | 2009-01-06 | 2009-01-06 | |
PCT/US2009/069022 WO2010075297A1 (en) | 2008-12-24 | 2009-12-21 | Body support with non-planar top surface |
Publications (3)
Publication Number | Publication Date |
---|---|
EP2373198A1 true EP2373198A1 (en) | 2011-10-12 |
EP2373198A4 EP2373198A4 (en) | 2012-06-27 |
EP2373198B1 EP2373198B1 (en) | 2013-06-26 |
Family
ID=42288113
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09835710.6A Active EP2373198B1 (en) | 2008-12-24 | 2009-12-21 | Body support with non-planar top surface |
Country Status (5)
Country | Link |
---|---|
US (1) | US20110283461A1 (en) |
EP (1) | EP2373198B1 (en) |
DK (1) | DK2373198T3 (en) |
ES (1) | ES2423320T3 (en) |
WO (1) | WO2010075297A1 (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20160316926A9 (en) * | 2005-06-24 | 2016-11-03 | Chris Collins | Reticulated material body support and method |
WO2008048743A2 (en) * | 2006-08-29 | 2008-04-24 | Ascion Llc | A foam spring mattress configured with variable firmness |
US9848711B2 (en) * | 2012-12-28 | 2017-12-26 | Tempur-Pedic Management, Llc | Mattress assembly |
US10357115B2 (en) | 2013-02-28 | 2019-07-23 | Zinus Inc. | Foam mattress with symmetrical wavy foam layers |
US10835051B2 (en) * | 2016-12-15 | 2020-11-17 | Stryker Corporation | Person support |
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US7559106B1 (en) * | 2005-12-24 | 2009-07-14 | Scott Technology Llc | Dynamic pressure relieving mattresses |
US7334280B1 (en) * | 2006-08-11 | 2008-02-26 | Swartzburg Rick T | Ventilated mattress and method |
US7426767B2 (en) * | 2006-09-12 | 2008-09-23 | Sleep Innovations, Inc. | Waffle-cut foam mattress or cushion pad |
FR2972615B1 (en) * | 2011-03-14 | 2013-03-08 | Fabienne Sportis | NEW ADAPTIVE MATTRESS AND METHOD FOR MANUFACTURING THE SAME |
-
2009
- 2009-12-21 US US13/141,534 patent/US20110283461A1/en not_active Abandoned
- 2009-12-21 WO PCT/US2009/069022 patent/WO2010075297A1/en active Application Filing
- 2009-12-21 EP EP09835710.6A patent/EP2373198B1/en active Active
- 2009-12-21 DK DK09835710.6T patent/DK2373198T3/en active
- 2009-12-21 ES ES09835710T patent/ES2423320T3/en active Active
Patent Citations (4)
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US3885258A (en) * | 1973-03-26 | 1975-05-27 | John J Regan | Multi-layered contoured mattress |
CH638090A5 (en) * | 1978-12-12 | 1983-09-15 | Karl Hofer | Foamed material sheet, in particular for mattresses or gymnastics mats |
DE10346684A1 (en) * | 2002-10-08 | 2004-04-22 | Recticel Nederland B.V. | Bed mattress has wave-shaped spring core running between wave-shaped parallel upper and lower level interfaces |
US20070234479A1 (en) * | 2006-04-06 | 2007-10-11 | Warshaver Charles M | Mattress comfort topper |
Non-Patent Citations (1)
Title |
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See also references of WO2010075297A1 * |
Also Published As
Publication number | Publication date |
---|---|
EP2373198B1 (en) | 2013-06-26 |
WO2010075297A1 (en) | 2010-07-01 |
DK2373198T3 (en) | 2013-09-30 |
US20110283461A1 (en) | 2011-11-24 |
ES2423320T3 (en) | 2013-09-19 |
EP2373198A4 (en) | 2012-06-27 |
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