FIELD OF THE INVENTION

The invention relates to an adaptable mattress. Furthermore, the invention relates to a method for use of an adaptable mattress. Furthermore, the invention relates to a kit of parts of an adaptable mattress.

BACKGROUND OF THE INVENTION

The present invention is in the field of a mattress. A mattress is a large, rectangular pad for supporting a resting body. It is designed to be used as a bed or on a bed frame, as part of a bed. Mattresses may consist of a quilted or similarly fastened case, usually of heavy cloth, that contains mate-rials such as hair, straw, cotton, foam rubber, or a framework of metal springs. Mattresses may also be filled with air or water. Mattresses are usually placed on top of a bed base. They may be supplied with a secondary mattress and a removable topper. The present invention specifically relates to a foam mattress and in particular to an all-foam mattress, as well as to a spring mattress.

All-foam mattresses use different weights and densities of foams, typically petrochemical-based, flexible polyurethane foams and viscoelastic foams or memory foam, and latex rubber foams. Clearly also biodegradable foams and biobased foams may be considered. A foam often applied is latex, which is generally a blend of natural and synthetic latex. Also so-called memory foam may be used, typically in combination. Memory foam typically softens and conforms to the sleeper in response to body temperature and body weight. Latex and memory foam mattresses each provide specific characteristics. Open-cell memory foams, pinhole cored memory foam, gel-infused memory foams, channel-cut foam cores, reticulated foam support layers and other technologies may be used to improve air circulation through all-foam beds. Further high-density foams may be used, which are more compact compared to polyurethane.

In view of costs mattresses are typically offered as a one-size-fits-all mattress. This concept clearly cannot adapt for specifics of a user, such as body-weight, body structure, length, and so on.

In addition, about 10% of sold mattresses are discarded on a yearly basis. Re-use of materials is complicated as parts of the mattresses can typically not be taken apart, resulting in incineration or waste deposit. Examples of such mattresses can be found in EP 3 698 675 Al, DE 20 2018 103007 Ul, DE 20 2007 001720 Ul, DE 202 07 912 Ul, and US 4,711,067 A. EP 3 698 675 Al recites a mattress of mattress base, comprising a foam material with a basic hardness, wherein both the first and the second opposing surface are divided into zones at both sides of a fictive centre line, perpendicular to the longitudinal direction of the mattress or mattress base, wherein the first and the second surface each comprise at least one zone with a zonal hardness lower than said basic hardness, which reduction in hardness is the result of one or more incisions and/or incision patterns in the surface layer at the level of said zones. A second and third aspect respectively relate to a mattress base of a mattress base and a mattress, which mattress comprises a foam layer with one or more cavities provided with inserts, and a method for providing this mattress base. DE 20 2018 103007 U1 recites a combination mattress , comprising: a first mattress element with a first contact surface and an oppositely arranged first outer surface which is designed as a first lying surface for a user; and a second mattress element with a second contact surface and an oppositely arranged second outer surface which is designed as a second lying surface for a user; wherein the first mattress element and the second mattress element each have at least one Head support area for supporting a head, at least one neck support area for supporting a neck, at least one shoulder support area for supporting shoulders, at least one lumbar support area for supporting at least part of a spine and at least one pelvic support area for supporting a pelvis of the user; wherein the first outer surface of the first mattress element and the second outer surface of the second mattress element each in the headrest area , the neckrest area , the Shoulder support area , the lumbar support area and the pelvic support area at least partially have mutually different profiles; wherein the first mattress element and the second mattress element are stacked on top of one another in such a way that the first contact surface of the first mattress element and the second contact surface of the second mattress element at least are partially in touch with each other; and wherein at least one of the first contact surface and the second contact surface has a corrugated profile at least in a partial area. DE 20 2007 001720 U1 recites a mattress for a bed with a lower layer, in particular made of foam material such as PU or HR foam, and an upper layer made of viscoelastic material, in particular a visco foam, which has a greater thickness in the shoulder area and / or in the hip area than in other areas, especially in the lordosis area, or in all other areas. DE 202 07 912 U1 recites a mattress with a mattress core, which is formed by at least first and second plate-shaped, flat on top of each other and fixed in this position by a mattress cover, which are made of a material of different hardness compared to each other. US 4,711,067 A recites a packaging method including the steps of inserting a single mattress into a flexible and waterproof wrapper, compressing by squeezing with compressing means to reduce the thickness of the mattress within limits compartible with the elastic structure of the actual mattress, and driving out the air from inside the wrapper; welding the wrapper to seal it and then rolling up the squeezed whole obtained to give it a stable shape. The finished item is placed in a container or case suitable for offering the item for sale.

It is observed that often not the whole mattress needs to be replaced; some parts could be re-used if parts could be separated from one and another.

There is therefore a need for an improved and adaptable mattress, which can be re-used partly, and of which parts can be recycled. It is an object of the present invention to provide such a mattress which overcomes one or more of the above disadvantages, and a method of forming a mattress, without jeopardizing functionality and advantages.

SUMMARY OF THE INVENTION

According to a first aspect of the invention, an adaptable mattress for allowing a person to lie on, comprising:

- a lower part comprising:

- a lower foam material part;

- a first surface;

- a first shoulder section arranged to the first surface, comprising first recesses, and having a first shoulder section hardness;

- a second surface arranged on an opposite site of the first surface; and

- a second shoulder section arranged to an opposite end of the first surface or the second surface, comprising second recesses, and having a second shoulder section hardness;

- an upper part arranged to a top side of the lower part, comprising;

- an upper foam material part;

- a lying surface arranged for receiving the person; and

- a third shoulder section arranged to the lying surface, comprising third recesses, and having a third shoulder section hardness; and

- a cover arranged for surrounding the lower part, and the upper part for holding the lower part and the upper part relative to each other, such as a polymeric cover, such as a PE-tricot, ; wherein the upper part and the lower part are removable in contact with each other, and as such can be exchanged, be turned, be rotated, be replaced, or a combination thereof; and wherein the first shoulder section hardness, and the second shoulder section hardness are different. The present adaptable mattress typically comprises two parts, namely the lower part and the upper part, and the cover. In the adaptable mattress, the cover comprises a chamber for arranging the lower part and the upper part inside the chamber, preferably wherein the cover comprises a zipper for closing the chamber. The zipper is typically provided at an edge of the mattress. The zipper typically is provided on most of the circumference of the mattress (the cover), such as 80-99% thereof, e.g. 90-98% thereof. It is noted that otherwise it would be more difficult to replace the upper part, or the lower part, or both. This advantageously allows to arrange the upper and lower part to each other without the use of glue or any other semi-permanent coupling means. As the upper and lower part may be easily separated, this enhances the recycling options of this adaptable mattress.

Therewith the present mattress provides detachable parts, improved hygiene, better options for recycling and thus less impact on the environment, and adaptability to weight , size, posture, and form of human beings, as well as to comfort requirements of said human being. Each part, e.g. the lower part, the upper part, and the cover, can be replaced individually. The life cycle of the present mattress is therewith increased, e.g. as only one part may need to be replaced. No adhesive or glue is used, therewith reducing the impact on the environment as well. The present mattress contributes to a sustainable planet.

The lower foam material part typically forms the main part of the lower part. The upper foam material part typically forms the main part of the upper part.

A person lying on the adaptable mattress may sleep on its side. This person typically rests his or hers head on a pillow. Further, the weight of the body and the legs are typically directly pressing on the adaptable mattress. Directly in this context does not typically mean in contact with the adaptable mattress, as e.g. bed sheets may be between the person and the adaptable mattress. Bed sheets typically do not compress and merely follow the curve of the person and/or the mattress.

The adaptable mattress typically follows the curvature of the person lying on the bed, such as lying sideways on the adaptable mattress. At some locations, such as the shoulders and/or the hips, the mattress is compressed more relative to the stomach area and/or the legs. This is due to a combination of the local weight of the person as well as the local shape of the person. The mattress is elastic, such as viscoelastic. Therefore, the mattress will locally give a higher counter force to the shoulder and/or hip area due to the large impression. This local counter force may then make the adaptable mattress locally uncomfortable or even physically unsuitable for this person. The adaptable mattress has a first shoulder section, which has a hardness suitable for a specific first type of person. And as not alle persons are alike, the adaptable mattress has a second shoulder section, which has a hardness suitable for a specific second type of person. As the first shoulder section hardness and the second shoulder section hardness are different, the first type of person and the second type of person are different. Hence, the adaptable mattress is suitable for more than one type of person. As the adaptable mattress is suitable for more than one type of person, the range of mattresses produced with different hardnesses can be reduced. This reduction in range results in less adaptable mattresses waisted and thus less material waisted. Further, this adaptable mattress may be adapted to the needs of the next person using the same adaptable mattress, such as in a hotel. Further, the adaptable mattress may be adapted to the overtime changing sleeping needs of a person. Further, the adaptable mattress may be adapted to a person for optimizing the ergonomics for that person.

In an exemplary embodiment of the adaptable mattress, the section hardness each individually is based on the depth of the recess, or the width of the recess, or the length of the recess, or the shape of the recess, or the density of the recesses in the respective section, or combination thereof. Typically, initially at production, the lower part and the upper part are made of a lower foam material part and an upper foam material part, respectively. Typically, at specific and/or predefined locations recesses are carved out or cut in the lower and upper foam material parts. The recesses locally reduce the hardness of the foam material part. Hence, the recesses determine the deviation from the hardness of the foam material part. This embodiment advantageously provides several options to adapt the hardness. The recesses are typically selected such that the recesses are not felt individually by the person lying on the adaptable mattress. Furthermore, recesses in the lower part may be may slightly larger compared to the upper part, as the upper part dampens or masks the possibility for a person lying on top of the adaptable mattress to feel individual recesses in the lower part. This advantageously provides a larger range of hardness to the lower part and thus the adaptable mattress.

The depth of a recess typically varies between a few millimetres, such as 3 mm, to several centimetres, such as 5 cm. The width of the recess typically varies between a millimetre to several centimetres. The length of the recess is typically along the whole length of the adaptable mattress. Alternatively, the length of the recess may be selected such that the recess stops just short of the edge of the upper or lower part. This allows the adaptable mattress to better maintain its shape when a person lies on the adaptable mattress. Just short of the edge may be in the range of a centimetre up to several centimetres, or even up to one or two decimetres. The shape of the recess is typically a cross-sectional shape. The shape may be of a rectangle with an opening at the top where the recess meets the surface of the lower or upper part. Alternatively, the shape may be of a triangle with one side flush with the surface of the lower or upper part. Alternatively, the shape may be of a triangle with a corner of the triangle flush with the surface of the lower or upper part. In this particular example, the comer may leave only a small opening at the surface. Alternatively, the shape may be circular or semi-circular. The shape may also vary over the length of the recess. Typically, the shape may be selected such that the middle or the middle zone of the recess is less hard compared to the end zones of the recess. The density of the recesses impacts the hardness in a particular zone of the mattress. The density parameter thus combines the resulting hardness of the previous parameters. The density parameter is measured by the spacing between recesses. Furthermore, the hardness is typically gradually changing from one section of the adaptable mattress to the other.

In an exemplary embodiment of the adaptable mattress, at least one, more preferably all of the foam material parts, is/are a viscoelastic material. A viscoelastic material advantageously adapts to the curvature of the person specifically over time due to the viscose property of the foam material. In a further exemplary embodiment, the upper and the lower part comprise different viscoelastic materials. As the upper part eases, equalizes or softens the hardness of the lower part, the section transitions in the lower part and the size of the recesses may advantageously be selected larger compared to the upper part. Further, due to that the lower part may have larger recesses and/or a higher density of the recesses, the lower foam material part may be selected harder compared to the upper foam material part, for providing a larger range of hardness variation to the lower part. The adaptable mattress may thus advantageously provide a larger range of hardnesses when the lower and upper foam material part have different hardnesses, more specific when the lower foam material part has a higher hardness compared to the upper foam material part.

In an exemplary embodiment of the adaptable mattress, the different sections of the lower part extend in depth substantially to half way, preferably 40%, more preferably 30%, more preferably 25%, more preferably 20%, most preferably 15%, of the thickness of the lower part. The thickness of the lower part typically ranges between 5 centimetre and 25 centimetres, preferably 10 centimetres and 20 centimetres.

In an exemplary embodiment of the adaptable mattress, the different sections of the upper part extend in depth substantially to half way, preferably 40%, more preferably 30%, more preferably 25%, more preferably 20%, most preferably 15%, of the thickness of the upper part. The thickness of the upper part typically ranges between 1 centimetre and 15 centimetres, preferably 2 centimetres and 10 centimetres.

In a further exemplary embodiment of the adaptable mattress, the lower part comprises a first hip section arranged to the first surface, comprising fourth recesses, and having a first hip section hardness based on the fourth recesses, wherein the first shoulder section hardness and the second shoulder section hardness are softer compared to the first hip section hardness. Typically, the shoulders extend more from the body compared to the hips and in addition typically have less weight. Hence, the adaptable mattress advantageously has to adapt more to the shoulders compared to the hips.

In an exemplary embodiment of the adaptable mattress, the upper part comprises a third hip section arranged to the lying surface, comprising fifth recesses, and having a third hip section hardness based on the fifth recesses, wherein the third shoulder section hardness is softer compared to the third hip section hardness. Typically, the shoulders extend more from the body compared to the hips. Hence, the adaptable mattress advantageously has to adapt more to the shoulders compared to the hips. Furthermore, the combination of a first hip section and a second hip section provides the advantage of making the mattress more adaptable, thus suitable for more people.

In an exemplary embodiment of the adaptable mattress, the second shoulder section is advantageously arranged to the second surface. This advantageously allows space for leg sections as well as provides a clear adaptation to the mattress by flipping the mattress over.

In an exemplary embodiment of the adaptable mattress, the lower part comprises a second hip section arranged to the second surface, comprising sixth recesses, and having a second hip section hardness based on the sixth recesses, wherein the first shoulder section hardness and the second shoulder section hardness are softer compared to the second hip section hardness. This embodiment advantageously provides further adaptation options for making the mattress suitable for more people enhancing the technical effects.

In a further exemplary embodiment of the adaptable mattress, the lower part comprises a first leg section arranged to the first surface, comprising seventh recesses, and having a first leg section hardness based on the seventh recesses, wherein the first leg section hardness is different from the first shoulder section hardness. Although the leg section may be used to place the legs on, the leg section may advantageously be used as an alternative shoulder section providing an additional adaptable option to the adaptable mattress. In a further exemplary embodiment of the adaptable mattress, the lower part comprises a second leg section arranged to the second surface, comprising eighth recesses, and having a second leg section hardness based on the eighth recesses, wherein the second leg hardness is different from the second shoulder hardness. Although the leg section may be used to place the legs on, the leg section may advantageously be used as an alternative shoulder section providing an additional adaptable option to the adaptable mattress.

In a further exemplary embodiment of the adaptable mattress, the upper part comprises a third leg section arranged to the lying surface, comprising nineth recesses, and having a third leg section hardness based on the nineth recesses, wherein the third leg section hardness is different from the third shoulder section hardness. Although the leg section may be used to place the legs on, the leg section may advantageously be used as an alternative shoulder section providing an additional adaptable option to the adaptable mattress.

In an exemplary embodiment of the adaptable mattress, the recesses of at least one, preferably multiple, most preferably all of the sections, are extending over the width of the mattress, such over the width of the respective surface advantageously providing the same hardness over the complete width of the mattress.

In an exemplary embodiment of the adaptable mattress, the first surface and the second surface are arranged for receiving the weight of the person; and/or the person lying on the adaptable mattress defines a lying or longitudinal axis; and/or the recesses of a section run perpendicular to the lying axis; and/or the adaptable mattress is adaptable to a person by rotating the mattress around an axis perpendicular to the first surface and/or a longitudinal axis of the mattress; and/or the adaptable mattress is adaptable to a person by arranging, placing and/or locating the shoulders of the person on the first shoulder section, the second shoulder section, the first leg section, or the second leg section. The options of this embodiment individually or in combination advantageously provide a further specification or detailing of the adaptable mattress.

In an exemplary embodiment of the adaptable mattress, the lower part and/or the upper part comprises transition areas arranged between the different sections and/or at the ends of one of the respective surfaces, wherein the transitions areas have a hardness which is different, preferably harder, than the adjacent shoulder section, the adjacent hip section and/or the adjacent leg section. This advantageously allows the transition areas to provide a different support, preferably more support, to parts of the body of the person not extending as far as the shoulders and/or hips.

In an exemplary embodiment of the adaptable mattress one or more of the lower foam material part, and the upper foam material part are polymeric materials, preferably wherein one or more of the polymeric materials is selected from the group of foams with a densities (DIN EN ISO 845) of 10-70 kg/m ³ , preferably 20-50 kg/m ³ , a compression load under deflection (DIN EN ISO 3386-1) of 3-7 kPa, preferably 3.5-6 kPa, such as 4.0-5.5 kPa, a tensile strength (DIN EN ISO 1798) of > 80 kPa, preferably > 100 kPa, such as 120- 220 kPa, an elongation at break (DIN EN ISO 1798) of > 100%, preferably >120%, such as 150-230%, and combinations thereof.

In an exemplary embodiment of the adaptable mattress one or more of the polymeric foams is an open-cellular foam.

In an exemplary embodiment of the adaptable mattress the foams are viscoelastic.

In an exemplary embodiment of the adaptable mattress the cover is elastic.

In an exemplary embodiment of the adaptable mattress the cover comprises fluid absorbing material.

In an exemplary embodiment of the adaptable mattress the cover comprises fluid releasing material.

In an exemplary embodiment of the adaptable mattress the lower part has a width of 70-200 cm.

In an exemplary embodiment of the adaptable mattress the lower part has a length of 150-250 cm.

In an exemplary embodiment of the adaptable mattress the lower part has a height of 10-40 cm.

In an exemplary embodiment of the adaptable mattress the cover has a height of 1-50 cm.

In an exemplary embodiment of the adaptable mattress the section each individually has a height of 5-20 cm.

In an exemplary embodiment of the adaptable mattress the section each individually has a width of 15-50 cm.

In an exemplary embodiment of the adaptable mattress each recess individually has a depth of 2-15 cm.

In an exemplary embodiment of the adaptable mattress the mattress, or at least io one part thereof, is reusable.

In an exemplary embodiment of the adaptable mattress the mattress, or at least one part thereof, is a foam mattress.

In an exemplary embodiment of the adaptable mattress one or more of the mattress, the lower part, or the upper part has the shape of a cuboid or rectangular prism.

In an exemplary embodiment of the adaptable mattress one or more of the recesses have a cross-sectional shape of a square, a rectangle, a triangle, such as a isosceles triangle, a rhombus, a trapezium, or diamond.

In an exemplary embodiment of the adaptable mattress one or more of the first surface, the second surface, or the lying surface have the shape of a rectangle.

In an exemplary embodiment of the adaptable mattress the first surface, the second surface, or the lying surface have the same shape.

According to another aspect, a kit of parts for the adaptable mattress according to any of the preceding embodiments, comprising at least two of a lower part, an upper part or a cover according to any of the embodiments preceding or following. This aspect of the invention provides the same advantages as mentioned for the embodiments of the adaptable mattress.

According to another aspect, a method of forming an adaptable mattress according to any of exemplary embodiments preceding or following, comprising:

- establishing at least one of a length of a user, a weight of a user, a hip height of a user, a shoulder height of a user, and a gender; and

- selecting at least one of a first shoulder section adapted to the user, a second shoulder section adapted to the user, and a cover adapted to the user. This aspect of the invention provides the same advantages as mentioned for the embodiments of the adaptable mattress.

In an exemplary embodiment of the method, the adaptable mattress further comprises selecting at least one section adapted to a second user, preferably the second shoulder section. This embodiment advantageously allows the adaptable mattress to be adapted to two different persons, which may be beneficial when the adaptable mattress is used by multiple persons, such as in environments using the adaptable mattress to sleep on in shifts, such as in submarines, larger ships or on oil rigs.

In an exemplary embodiment of the method, the adaptable mattress further comprises replacing at least one of the lower part with a new lower part, the upper part with a new upper part, and the cover with a new cover. This allows reuse or continued use of part of the adaptable mattress advantageously further reducing the waist from old or used up adaptable mattresses.

In an exemplary embodiment of the method, the adaptable mattress further comprises recirculating at least one of the upper part, the lower part, and the cover. The recirculated part may advantageously be reused further reducing the waste from old or used up adaptable mattresses.

In an exemplary embodiment of the method, the adaptable mattress further comprises compressing the mattress to 10-25% of its uncompressed size, and transporting the mattress to the user. This advantageously provides a smaller volume during transport of the adaptable mattress allowing more adaptable mattresses to be transported reducing transportations.

BRIEF DESCRIPTION OF THE DRAWINGS

The invention will be apparent from and elucidated further with reference to the embodiments described by way of example in the following description and with reference to the accompanying drawings, in which:

Figure 1 schematically shows a cross-sectional view of an adaptable mattress 1;

Figure 2 schematically shows a perspective view of an adaptable mattress according to figure 1 ;

Figure 3 schematically shows another cross-sectional view of the adaptable mattress; and

Figure 4 schematically shows cross-sectional views of the adaptable mattress in several use positions.

The figures are purely diagrammatic and not drawn to scale. In the figures, elements which correspond to elements already described may have the same reference numerals.

LIST OF REFERENCE NUMERALS

DETAILED DESCRIPTION OF EXEMPLARY EMBODIMENTS The following figures may detail different exemplary embodiments.

Embodiments can be combined to reach an enhanced or improved technical effect. These combined embodiments may be mentioned explicitly throughout the text, may be hint upon in the text or may be implicit.

Figure 1 schematically shows a cross-sectional view of an adaptable mattress 1. The adaptable mattress comprises a lower part 20 and an upper part 10. The lower part is typically shaped such that the outer boundaries align with the upper part when placed on top of each other. The lower part and upper part are typically not glued or coupled to each other in any way. The upper part may be typed, labelled or called a topper.

The lower part comprises a lower foam material part 20’, a first surface 26, a first shoulder section 23, a second surface 27, and a second shoulder section 23’. The lower foam material part typically forms the main part of the lower part. The lower foam material part typically has a well selected hardness. The first surface and the second surface are arranged on opposite sides of the lower part, and typically of the lower foam material part. The first surface and the second surface are the surfaces of the lower part, such as the lower foam material part, arranged to receive the weight of the person lying on the adaptable mattress, or to comfort preference. The first shoulder section is arranged to the first surface. The first shoulder section is arranged at a location where the shoulders should or are expected to be when lying on the adaptable mattress. The first shoulder section is arranged to an end of the first surface at the location for receiving the weight of the shoulders of the person lying on the adaptable mattress.

The second shoulder section may be arranged to the second surface. The second shoulder section is also arranged at a location where the shoulders should or are expected to be when lying on the adaptable mattress. The second shoulder section is arranged to an end of the second surface at the location for receiving the weight of the shoulders of the person lying on the adaptable mattress. In this case, when the first surface is facing upward during use, the person lying on the adaptable mattress will experience the hardness of the first shoulder section. And when the adaptable mattress is flipped over and the second surface is facing upward during use, the person lying on the adaptable mattress will experience the hardness of the second shoulder section. This allows the adaptable mattress to be adapted to the comfort of the person lying on the adaptable mattress.

Alternatively, the second shoulder section may be arranged to an opposite end of the first surface. The second shoulder section is arranged to an opposite end of the first surface at the location for receiving the weight of the shoulders of the person lying on the adaptable mattress.

In this case, when the person lying on the adaptable mattress has his head arranged to one end of the first surface, the person lying on the adaptable mattress will experience the hardness of the first shoulder section. And when the adaptable mattress is rotated 180 degrees around a vertical axis, the person lying on the adaptable mattress has his head arranged to an opposite end of the first surface, and the person lying on the adaptable mattress will experience the hardness of the second shoulder section. This also allows the adaptable mattress to be adapted to the comfort of the person lying on the adaptable mattress.

The lower part may comprise a first shoulder section 23 and a first leg section 25 arranged to a first surface 26. The first leg section may be reused as shoulder section, when the lower part is rotated 180 degrees around the vertical axis. This already allows the reuse of the adaptable mattress for two types of persons lying on the adaptable mattress to experience different hardness for the shoulders and/or for their legs when the first surface is facing upward.

The lower part may comprise a second shoulder section 23’ and a second leg section 25’ arranged to a second surface 27. The second leg section may be reused as shoulder section, when the lower part is rotated 180 degrees around the vertical axis. This already allows the reuse of the adaptable mattress for two types of persons lying on the adaptable mattress to experience different hardness for the shoulders and/or for their legs when the second surface is facing upward.

The combination of an adaptable mattress comprising a first shoulder section, and a first leg section arranged to a first surface, and comprising a second shoulder section, and a second leg section arranged to a second surface allows a person lying on the adaptable mattress to experience four different hardnesses to their shoulders and/or legs. These different hardnesses are provided by rotating the adaptable mattress around the vertical axis and/or flipping the mattress over.

The lower part may comprise a first hip section 22 arranged to the first surface. The first hip section is arranged at a position receiving the weight of the hips of the person lying on the adaptable mattress. The first hip section is typically arranged relative to the first shoulder section. When the adaptable mattress comprises a first leg section and the first leg section is used as shoulder section, the first hip section may be reused as hip section for this configuration or use of the adaptable mattress.

The lower part may comprise a second hip section 22’ arranged to the second surface. The second hip section is arranged at a position receiving the weight of the hips of the person lying on the adaptable mattress. The second hip section is typically arranged relative to the second shoulder section. When the adaptable mattress comprises a second leg section and the second leg section is used as shoulder section, the second hip section may be reused as hip section for this configuration or use of the adaptable mattress.

The lower part may comprise a transition area 21 arranged to the first surface, and between the first shoulder section and the first hip section. The lower part may comprise transition area 21 arranged between the first leg section and the first hip section. The lower part may comprise transition area 24 arranged between an end of the first surface and the first shoulder section. The lower part may comprise transition area 24 arranged between an end of the first surface and the first leg section.

The lower part may comprise a transition area 21 arranged to the second surface, and between the second shoulder section and the second hip section. The lower part may comprise transition area 21 arranged between the second leg section and the second hip section. The lower part may comprise transition area 24 arranged between an end of the second surface and the second shoulder section. The lower part may comprise transition area 24 arranged between an end of the second surface and the second leg section. The transition areas may have a specific or different hardnesses relative to other transitions areas, the first shoulder section, the second shoulder section, the first hip section, the second hip section, the first leg section and/or the second leg section.

The upper part may comprise an upper foam material part 10’, a lying surface 16, and a third shoulder section 13. The upper foam material part typically forms the main part of the upper part. The upper foam material part typically has a well selected hardness. The lying surface is the surface of the upper part arranged to receive the weight of the person lying on the adaptable mattress.

The third shoulder section is arranged to the lying surface. The third shoulder section is arranged at a location where the shoulders should or are expected to be when lying on the adaptable mattress. The third shoulder section is arranged to an end of the lying surface at the location for receiving the weight of the shoulders of the person lying on the adaptable mattress.

The upper part may comprise a third leg section 15 arranged to a lying surface 16. The third leg section may be reused as shoulder section, when the upper is rotated 180 degrees around the vertical axis. This already allows the reuse of the adaptable mattress for two types of persons lying on the adaptable mattress to experience different hardness for the shoulders and/or for their legs.

The upper part may comprise a transition area 11 arranged between the third shoulder section and the third hip section. The upper part may comprise transition area 11 arranged between the third leg section and the third hip section. The upper part may comprise transition area 14 arranged between an end of the third surface and the third shoulder section. The upper part may comprise transition area 14 arranged between an end of the third surface and the third leg section.

The transition areas may have a specific or different hardnesses relative to other transitions areas, the third shoulder section, the third hip section, and/or the third leg section.

The adaptable mattress comprising the first shoulder section, the second shoulder section, the first leg section, the second leg section, the third shoulder section, and/or the third leg section may provide eight different hardnesses to the shoulders and/or legs of a person lying on the adaptable mattress. This configurability allows the adaptable mattress to be acceptable and/or applicable to a wider range of people. As the adaptable mattress is applicable to a wider range of people, the number of mattress kept in stock may be reduced, and the variety of mattresses produced may be limited. The adaptable mattress has the technical effect of optimizing production and limiting waist of material. Further, the adaptable mattress may optimize the ergonomics for specific people using the adaptable mattress.

Figure 2 schematically shows a perspective view of an adaptable mattress according to figure 1. The upper part and the lower part are shown at a distance from each other, although the upper part and the lower part are in use typically in contact with each other. This elucidates the location of the first surface, the second surface, and the lying surface.

Figure 3 schematically shows another cross-sectional view of the adaptable mattress. The adaptable mattress comprises an upper part 10, and a lower part 20 arranged on top of the upper part. The adaptable mattress may comprise a cover 8 having an inner space. The cover may hold the upper part and the lower part in its inner space. The cover typically snugly fits around the upper part, and the lower part.

The cover, the upper part, and/or the lower part are typically not glued together for allowing the parts of the mattress to be easily separated for separately processing and recycling materials of the adaptable mattress.

The hardness of a mattress is typically expressed in kilograms per square meter, kg/m ^A 2. The density of a foam is typically expressed in kilograms of foam per cubic metre, kg/m ^A 3. Below is a table indicating the relation between density of the foam and the feel of the foam when lying on the foam from htt s : /7j ohnry anbyde si gn . co . uk/'under standi ng- beds/density-hardness-and-firmness-of-foams/

Foam Density (Memory, Hybrid or Latex) Feel/Tension

30kg Ultra Soft

40kg Soft

50kg Medium

60kg Medium

70kg Firm

80kg Ultra Firm

The hardness of foam is a measurement that gives a perceived firmness rating for a customer, i.e. the harder the foam is the firmer it will feel. This is where density being the only measure of support is inaccurate. You need to also know the hardness. Hardness is measured in a set range of tolerance and is not a one size fits all figure. It could be worked out by compressing a piece of foam to 40% of its original size.

This measurement is then displayed in newtons (N) so a hardness rating of 70- 100N means it takes between 70 and 100 newtons of pressure to compress it to 40%. The higher the figure the more force is needed and, therefore, the firmer the foam. This according to https://iohnryanbydesi n.co.uk/understanding-beds/density-hardness-and-firmness-of- foams/.

Figure 4 schematically shows cross-sectional views of the adaptable mattress in several use configurations. In total eight use configurations of the adaptable mattress are shown. For each use position it is assumed that the person lying on the adaptable mattress has his head on the left side and his legs on the right side.

The top left use configuration has the adaptable mattress positioned such that the shoulders of the person lying on the adaptable mattress will experience the hardness of the third shoulder section 13 in combination with the first shoulder section 23. The second shoulder section 23’ is so deep that the influence on the hardness experience of the user is neglectable.

The use configuration just below the previous use configuration has the adaptable mattress positioned such that the shoulders of the person lying on the adaptable mattress will experience the hardness of the third shoulder section 13 in combination with the first leg section 25. The second leg section 25’ is so deep that the influence on the hardness experience of the user may be neglectable.

The use configuration just below the previous use configuration has the adaptable mattress positioned such that the shoulders of the person lying on the adaptable mattress will experience the hardness of the third shoulder section 13 in combination with the second shoulder section 23’. The first shoulder section 23 is so deep that the influence on the hardness experience of the user typically may be neglectable.

The use configuration just below the previous use configuration has the adaptable mattress positioned such that the shoulders of the person lying on the adaptable mattress will experience the hardness of the third shoulder section 13 in combination with the second leg section 25’. The first leg section 25 is so deep that the influence on the hardness experience of the user typically may be neglectable.

The top right use configuration has the adaptable mattress positioned such that the shoulders of the person lying on the adaptable mattress will experience the hardness of the third leg section 15 in combination with the first shoulder section 23. The second shoulder section 23’ is so deep that the influence on the hardness experience of the user typically may be neglectable.

The use configuration just below the previous use configuration has the adaptable mattress positioned such that the shoulders of the person lying on the adaptable mattress will experience the hardness of the third leg section 15 in combination with the first leg section 25. The second leg section 25’ is so deep that the influence on the hardness experience of the user typically may be neglectable.

The use configuration just below the previous use configuration has the adaptable mattress positioned such that the shoulders of the person lying on the adaptable mattress will experience the hardness of the third leg section 15 in combination with the second shoulder section 23’. The first shoulder section 23 is so deep that the influence on the hardness experience of the user typically may be neglectable.

The use configuration just below the previous use configuration has the adaptable mattress positioned such that the shoulders of the person lying on the adaptable mattress will experience the hardness of the third leg section 15 in combination with the second leg section 25’. The first leg section 25 is so deep that the influence on the hardness experience of the user typically may be neglectable.

At least two use configurations provide a different hardness, such as a different hardness experience, to the shoulders of the user lying on the adaptable mattress. These at least two use configurations may be according to any of the claims or embodiments. Preferably, more use configurations provide a different hardness, such as a different hardness experience, to the shoulders of the user lying on the adaptable mattress. More preferably, all use configurations provide a different hardness, such as a different hardness experience, to the shoulders of the user lying on the adaptable mattress.

Examples, embodiments or optional features, whether indicated as non-limiting or not, are not to be understood as limiting the invention as claimed.

It should be noted that the figures are purely diagrammatic and not drawn to scale. In the figures, elements which correspond to elements already described may have the same reference numerals.

The term “substantially” herein, such as in “substantially all emission” or in “substantially consists”, will be understood by the person skilled in the art. The term “substantially” may also include embodiments with “entirely”, “completely”, “all”, etc. Hence, in embodiments the adjective substantially may also be removed. Where applicable, the term “substantially” may also relate to 90% or higher, such as 95% or higher, especially 99% or higher, even more especially 99.5% or higher, including 100%. The term “comprise” includes also embodiments wherein the term “comprises” means “consists of’.

The term "functionally" will be understood by, and be clear to, a person skilled in the art. The term “substantially” as well as “functionally” may also include embodiments with “entirely”, “completely”, “all”, etc. Hence, in embodiments the adjective functionally may also be removed. When used, for instance in “functionally parallel”, a skilled person will understand that the adjective “functionally” includes the term substantially as explained above. Functionally in particular is to be understood to include a configuration of features that allows these features to function as if the adjective “functionally” was not present. The term “functionally” is intended to cover variations in the feature to which it refers, and which variations are such that in the functional use of the feature, possibly in combination with other features it relates to in the invention, that combination of features is able to operate or function. For instance, if an antenna is functionally coupled or functionally connected to a communication device, received electromagnetic signals that are receives by the antenna can be used by the communication device. The word “functionally” as for instance used in “functionally parallel” is used to cover exactly parallel, but also the embodiments that are covered by the word “substantially” explained above. For instance, “functionally parallel” relates to embodiments that in operation function as if the parts are for instance parallel. This covers embodiments for which it is clear to a skilled person that it operates within its intended field of use as if it were parallel.

Furthermore, the terms first, second, third and the like in the description and in the claims, are used for distinguishing between similar elements and not necessarily for describing a sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances and that the embodiments of the invention described herein are capable of operation in other sequences than described or illustrated herein.

The devices or apparatus herein are amongst others described during operation. As will be clear to the person skilled in the art, the invention is not limited to methods of operation or devices in operation.

It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and that those skilled in the art will be able to design many alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. Use of the verb "to comprise" and its conjugations does not exclude the presence of elements or steps other than those stated in a claim. The article "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The invention may be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the device or apparatus claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The mere fact that certain measures are recited in mutually different dependent claims does not indicate that a combination of these measures cannot be used to advantage.

The invention further applies to an apparatus or device comprising one or more of the characterising features described in the description and/or shown in the attached drawings. The invention further pertains to a method or process comprising one or more of the characterising features described in the description and/or shown in the attached drawings.

The various aspects discussed in this patent can be combined in order to provide additional advantages. Furthermore, some of the features can form the basis for one or more divisional applications.