WO2022074249A1

WO2022074249A1 - A multilayer adjustable pillow

Info

Publication number: WO2022074249A1
Application number: PCT/EP2021/077965
Authority: WO
Inventors: Anna Grigoryevna Polupanova
Original assignee: Anna Grigoryevna Polupanova
Priority date: 2020-10-08
Filing date: 2021-10-08
Publication date: 2022-04-14
Also published as: DE212021000481U1

Abstract

An adjustable multilayer pillow that enables adjustment of the thickness and rigidity of the pillow depending on the number of layers, their qualities and combination. The adjustable multilayer pillow comprises, at least, two outer split layers of various rigidities. At least one surface of each layer has raised parts and hollows that coincide with relevant hollows and raised parts of the other layer. It is characterized by at least one detachable inner layer whose rigidity is higher than that of each outer layer and which is designed to be reliably fixed between the outer layers. The pillow design enables expanding the functionality of the pillow by using layers of various variety and rigidity and by the stability of the layers due to their shape. The shape of the layers helps to fix them properly to each other and prevent the pillow from disassembling when it is used.

Description

A multilayer adjustable pillow

The present invention relates to an adjustable multilayer pillow, which enables the adjusting of thickness and rigidity of the pillow depending on the number of layers, their qualities and combination.

A previously proposed adjustable pillow is described in USA-5953777 (published on 21.09.1999) . This includes a main upper layer and additional layers that can be combined according to their thickness and rigidity and enabling adjustment of the thickness and rigidity of the pillow. The disadvantage of this pillow is the absence of fixing elements. The layers are fixed with a stretchable cover without which the pillow cannot be used .

A previously proposed multilayer composite pillow is described in CN210144372U (published on 17.03.2020) which contains an upper layer with hollows, at least one composite intermediate layer with bumps on its upper surface and on its under surface with hollows. The upper surface of the bottom layer has bumps that fit into the hollows in the intermediate layer. The drawback of this pillow is the inability to adjust rigidity levels. Another previously proposed pillow with adj ustable rigidness and thickness is described in EP 2130461 (published on 09 . 12 . 2009 ) . This is characterised by three detachable layers of di f ferent rigidity (A, B and C ) connected with the help of bumps and hollows . The drawback is the absence of rigidity distribution between outer and inner layers , which puts limitations on the rigidity ad ustability of the whole pillow .

The present invention aims to provide a simple , comfortable and user- friendly multilayer adj ustable pillow enabling adj ustment of the thickness and rigidity in accordance with the personal preferences of the user whilst keeping a stable position when the user is asleep .

The present invention aims to expand the current choice of adj ustable pillows and to enable the user to adj ust the rigidity of the pillow thus avoiding the high rigidity in the upper layer coming into contact with the head and neck . Thus enabling a comfortable anatomical and physiological position for the neck and head of the user .

Accordingly the present invention is directed to an adj ustable multilayer pillow comprising at least two split outer layers of varied rigidity, at least one surface of each layer has raised parts and hollows that coincide with relevant hollows and raised parts of the other layer . Preferably the pillow has at least one detachable inner layer whose rigidity is different to, preferably higher than, each outer layer and which is designed to be reliably fixed between the outer layers. The pillow is preferable made from polyurethane foam.

Preferably the additional inner layer or layers can be added or removed by the user to adjust the pillow's thickness and rigidity.

Advantageously the pillow may comprise two outer split layers and two additional detachable layers closely joined with each other. In this case, each layer may have its own rigidity which is different from the rigidity of other layers.

In a preferred embodiment the rigidity of an additional detachable inner layer may be lower than that of either outer layer .

Preferably to identify and combine the layers easily, each layer had a different colour indicating the rigidity and/or the place of the layer in the structure of the pillow.

Advantageously at least one additional detachable layer may differ from other layers, including outer layers, in thickness. Advantageously a level of rigidity can be achieved either through using a relevant material or through the thickness of the layer . Preferably the rigidity of each layer can adj usted by increasing or decreasing the density of the foam . In a preferred embodiment the rigidity level can be further adj usted either by adding or removing a layer or, in some cases , by reshuf fling the layers or choosing the upper level by turning the pillow .

Advantageously the raised parts and hollows of each layer form a wave-like or castellated surface for interconnection . Preferable the interconnectable surface has at least one raised part and one lower part . In a preferred embodiment the raised and lower parts are j oined to the other parts of the surface by sloping parts . Advantageously the di f ferent layers of the pillow can be held together by a pillowcase or slip .

Advantageously the intended upper outer layer may be shaped for additional head or lumbar support .

An example of a pillow made in accordance with the present invention will now be described hereinbelow with reference to the accompanying drawings in which :

Figure 1 shows a perspective view of a three layer pillow according to the present invention; Figure 2 shows a perspective view of a two layer pillow according to the present invention;

Figure 3 shows a perspective view of a four layer pillow according to the present invention; and

Figure 4 shows a perspective view of a three layer pillow according to the present invention .

The Figures illustrate how a pillow according the present invention can be assembled from four layers of various thickness and rigidities . The following labelling is followed through out : a a thin inner layer, yellow, the softest ; b a thick outer layer, white , soft ; c a thick outer layer, black, rigid; and d a thin inner layer, pink, the most rigid .

The rigidity of a layer can be achieved by any known way - selecting a relevant material , thickness (height ) of the layer etc . at the same time , colours , the rigidity gradation and their combination, described in the separate case above and can be changed within the scope of the present invention .

Suitable polyurethane foams to make the layers from are produced by Vita Baltic International , UAB under their VITA® range . Suitable foams are as follows in Table 1 . Table 1 Foam Layer Hardness

Figure 1 shows a combination of two outer layers - the soft b and the rigid c , as well as one inner layer d, the most rigid . Placing the most rigid layer between two outer layers provides the physiologically optimal rigidity a d thickness as well as the comfortable position of the head and the neck on the pillow by reducing the rigidity of outer layers . I f the inner layer is detachable , it is possible to vary the rigidity, temporarily reducing it by j oining only the outer layers .

Figure 2 shows a combination of two outer layers b, the soft , and c, the rigid, with the inner layer removed . The thickness will be minimal , whereas the pillow rigidity will be optimally combined . The pillow in this configuration can be turned in accordance with the user ' s preferences .

Figure 3 shows a combination of four layers - b, the soft , c, the rigid, a, the softest inner layer, and d - the most rigid inner layer . This combination is the thickest and has a balanced rigidity. The inner and outer layers can be reshuffled in accordance with the user's preferences.

Figure 4 shows a combination of two outer layers - b, the soft, and c - the rigid, plus the softest interlayer, i.e. the option in which the most rigid layer is removed. This makes the pillow thicker, but softer. The pillow can be turned in accordance with the user's preferences. Each layer has the same-relief, wave-like surface, fitting the wave relief of another layer. These surfaces each comprise parallel to ground the surface end parts 10 with raised and lowered parallel surface parts 12, 14 in the middle. The castellation surfaces 12, 14 are joined to the outer parts 10 and each other by sloped surfaces 16. This design does not need additional fixing devices and the pillow is not disassembled in use .

Claims

1 . An adj ustable multilayer pillow comprising, at least , two split outer layers of varied rigidity, at least one surface of each layer has raised parts and hollows that coincide with relevant hollows and raised parts of the other layer .

2 . A pillow according to Claim 1 , characterized by at least one detachable inner layer whose rigidity is di f ferent to , preferably higher than, each outer layer and which is designed to be reliably fixed between the outer layers .

3 . A pillow according to Claim 1 or Claim 2 , characterised by having four layers , including two outer split layers and two additional detachable inner layers .

4 . A pillow according to any preceding Claim, characterised in that the individual layers each have a various levels of rigidity level .

5 . A pillow according to any one of Claim 2 or Claims 3 or 4 read appendant to Claim 2 , characterised by a lower rigidity of each detachable inner layer in comparison with the outer layers .

6 . A pillow according to any preceding Claim, characterised by each layer having various colours , each colour indicating a

RECTIFIED SHEET (RULE 91) ISA/EP 9 rigidity level and/or place of the layer in the general design of the pillow .

7 . A pillow according to any preceding Claim, characterised by a di f ferent thickness of at least one of the additional detachable layers .

8 . A pillow according to any preceding Claim, characterised in that pillow is made from polyurethane foam .

9 . A pillow according to any preceding Claim, characterised in that rigidity of each layer is adj usted by the altering the density of the polyurethane foam .

10 . A pillow according to any preceding Claim, characterised in that the raised parts and hollows of each layer form a wavelike or castellated surface for interconnection .

11 . A pillow according to any preceding Claim, characterised in that the interconnectable surface has at least one raised part and one lower part .

12 . A pillow according to Claim 11 , characterised in that the raised and lower parts are j oined to the other parts of the surface by sloping parts .

RECTIFIED SHEET (RULE 91) ISA/EP - 10 -

13 . A pillow according to any preceding Claim, characterised in that the di fferent layers of the pillow are held together by a pillowcase or slip .

RECTIFIED SHEET (RULE 91) ISA/EP