EP0032486A2 - Mattress - Google Patents

Mattress Download PDF

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Publication number
EP0032486A2
EP0032486A2 EP81870003A EP81870003A EP0032486A2 EP 0032486 A2 EP0032486 A2 EP 0032486A2 EP 81870003 A EP81870003 A EP 81870003A EP 81870003 A EP81870003 A EP 81870003A EP 0032486 A2 EP0032486 A2 EP 0032486A2
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EP
European Patent Office
Prior art keywords
mattress
foam
layers
longitudinal
mattress according
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.)
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Application number
EP81870003A
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German (de)
French (fr)
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EP0032486A3 (en
Inventor
August Michiels
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Individual
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Individual
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Publication date
Application filed by Individual filed Critical Individual
Publication of EP0032486A2 publication Critical patent/EP0032486A2/en
Publication of EP0032486A3 publication Critical patent/EP0032486A3/en
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    • 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
    • A47C27/144—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas with foamed material inlays with projections, depressions or cavities inside 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
    • A47C27/142—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
    • A47C27/16—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas with foamed material inlays reinforced with sheet-like or rigid elements, e.g. profiled
    • 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
    • A47C27/20—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas with foamed material inlays with springs moulded in, or situated in cavities or openings in foamed material

Definitions

  • the present patent application relates to a mattress having improved elastic characteristics.
  • It relates more particularly to a foam mattress which, compared to the known foam mattresses based on natural rubber or synthetic material, remains non-deformable while adapting better to the body and supporting it in an excellent manner during use .
  • the mattress according to the invention consists of two layers of foam between which is disposed an intermediate layer composed of a series of cylindrical elements whose longitudinal axis is perpendicular to the length of the mattress and which are provided along the axis of a stiffening member.
  • the above-mentioned cylindrical elements are bonded by at least one longitudinal strip to one of the two layers of foam, while that another longitudinal strip is glued to the neighboring cylindrical element.
  • the cylindrical elements in question are formed from at least one layer of foam having, in longitudinal section, on both sides of the longitudinal symmetrical plane, a sinusoidal profile. .
  • Figure 1 shows a longitudinal section of an embodiment of the mattress according to the invention.
  • Figure 2 is a longitudinal section of a preferred embodiment of the mattress according to the invention.
  • the mattress of Figure 1 has two layers of foam 1 and 2 between which is a series of cylinders 3, also made of foam.
  • the cylinders 3 are obtained by winding and gluing flat foam parts. During the rolling of these flat parts, the flat edges facing each other are glued to each other along line a. In the center of each cylinder thus formed is created a hollow which is filled by a stiffening member such as a wooden stick 4 for example.
  • Each cylinder 3 is bonded with at least one flat strip 5 to one of the foam layers 1 and 2, in this case to layer 2. All the cylinders are then bonded to each other on along flat strips 6 while end pieces 7 complete the assembly.
  • FIG. 2 is also designed to allow rapid assembly of the constituent elements without giving up the characteristics of the finished product obtained according to FIG. 1.
  • the mattress according to FIG. 2 also comprises two layers of foam 8 and 9 between which there are two layers 10 and 11. These layers which have been cut from a single block of foam material, have a sinusoidal profile, at least at the level of the side which must come into contact with the layers 8 and 9.
  • the layers 10 and 11, which may or may not be cut from a single block of foam material, have on their flat sides a series of notches which after the flat sides have been glued to each other, form channels 12 which can let through the stiffening members such as wooden sticks, for example.
  • the mattress which can also be used as a sub-mattress, must still be provided with a covering or a cover as is the case for the mattress of the figure 1.
  • the mattress of Figure 2 provides a significant improvement if we compare the method used for its manufacture to that used for the embodiment according to Figure 1.
  • all the cylinders 3 must be cut from flat pieces of foam and all the cylinders thus produced must be flattened on three strips and then be glued to each other as well as to the inner side of layers 1 and 2.
  • the mattress obtained according to FIG. 2 only requires the cutting of the layers 10 and 11 according to a sinusoidal profile and the bonding between them of the two flat faces which face each other.
  • the intermediate layer, thus constituted by layers 10 and 11, can be introduced very quickly between layers 8 and 9 and be bonded thereto.
  • any difference in weight is well compensated for by the structure of the mattress. If the difference in weight exceeds 30 kgs, the density of the foam on the part of the mattress which supports the heaviest load can be increased.
  • all the cylindrical elements both for the execution according to FIG. 1 and according to that according to FIG. 2, can be cut in half in the longitudinal direction so that the movements causing deformations in part of the mattresses do not influence the other party.
  • the parts of the mattress which are produced mechanically according to the desired longitudinal profile could be produced by other methods such as, for example, that the casting or injection of these parts into suitable molds.
  • bonding all the equivalent techniques by which one piece of synthetic foam or natural rubber can be attached to another.
  • the wooden stiffening elements can be replaced by elements made of other materials provided that these do not excessively weigh down the mattress.

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  • Mattresses And Other Support Structures For Chairs And Beds (AREA)

Abstract

The mattress comprises two layers of foam(1, 2) between which is a layer of cylindrical components(3), whose axes extend across the bed and comprise wooden stiffening members(4) running in this direction. The cylindrical components can comprise one or more layers of foam material of sinusoidal profile in the lengthwise sectional view, typically comprising two layers of foam material with their flat sides towards each other and glued together.

Description

La présente demande de brevet se rapporte à un matelas présentant des caractéristiques élastiques améliorées.The present patent application relates to a mattress having improved elastic characteristics.

Elle concerne plus particulièrement un matelas en mousse qui, par rapport aux matelas connus en mousse à base de caoutchouc naturel ou de matière synthétique,reste-indéformable tout en s'adaptant mieux au corps et en le soutenant de manière excellente lors de l'usage.It relates more particularly to a foam mattress which, compared to the known foam mattresses based on natural rubber or synthetic material, remains non-deformable while adapting better to the body and supporting it in an excellent manner during use .

Pour atteindre ce résultat, le matelas conforme à l'invention est constitué de deux couches de mousse entre lesquelles est disposée une couche intercalaire composée d'une série d'éléments cylindriques dont l'axe longitudinal est perpendiculaire à la longueur du matelas et qui sont munis selon l'axe d'un organe de raidissement.To achieve this result, the mattress according to the invention consists of two layers of foam between which is disposed an intermediate layer composed of a series of cylindrical elements whose longitudinal axis is perpendicular to the length of the mattress and which are provided along the axis of a stiffening member.

Suivant une forme d'exécution de l'invention qui requiert toutefois une mise en oeuvre relativement compliquée et qui occasionne une perte de temps, les éléments cylindriques susmentionnés sont collés par au moins une bande longitudinale à l'une des deux couches en mousse, tandis qu'une autre bande longitudinale est collée à l'élément cylindrique voisin.According to an embodiment of the invention which however requires a relatively complicated implementation and which causes a loss of time, the above-mentioned cylindrical elements are bonded by at least one longitudinal strip to one of the two layers of foam, while that another longitudinal strip is glued to the neighboring cylindrical element.

Pour remédier aux inconvénients du processus de travail pour l'assemblage du matelas selon cette méthode, les éléments cylindriques en question sont formés d'au moins une couche de mousse présentant, en coupe longitudinale, des deux côtés du plan symétrique longitudinal, un profil sinusoïdal.To overcome the drawbacks of the working process for assembling the mattress according to this method, the cylindrical elements in question are formed from at least one layer of foam having, in longitudinal section, on both sides of the longitudinal symmetrical plane, a sinusoidal profile. .

D'autres avantages et d'autres détails de l'invention apparaîtront ci-après dans la description d'un matelas basé sur l'invention; cette description est donné uniquement à titre d'exemple et ne limite pas l'invention. Les repères de références renvoient aux figures annexées.Other advantages and other details of the invention will appear below in the description of a mattress based on the invention; this description is given only by way of example and does not limit the invention. The reference marks refer to the appended figures.

La figure 1 représente une coupe longitudinale d'une forme d'exécution du matelas selon l'invention.Figure 1 shows a longitudinal section of an embodiment of the mattress according to the invention.

La figure 2 est une coupe longitudinale d'une forme d'exécution préférée du matelas suivant l'invention.Figure 2 is a longitudinal section of a preferred embodiment of the mattress according to the invention.

Le matelas de la figure 1 comporte deux couches de mousse 1 et 2 entre lesquelles se trouve une série de cylindres 3, également en mousse. Les cylindres 3 sont obtenus par enroulement et collage de pièces plates en mousse. Lors de l'enroulement de ces pièces plates, les bords plats qui se font face sont collés l'un à l'autre suivant la ligne a. Au centre de chaque cylindre ainsi formé se crée un creux qui est rempli par un organe de raidissement tel qu'un bâton en bois 4 par exemple.The mattress of Figure 1 has two layers of foam 1 and 2 between which is a series of cylinders 3, also made of foam. The cylinders 3 are obtained by winding and gluing flat foam parts. During the rolling of these flat parts, the flat edges facing each other are glued to each other along line a. In the center of each cylinder thus formed is created a hollow which is filled by a stiffening member such as a wooden stick 4 for example.

Chaque cylindre 3 est collé à l'aide d'au moins une bande plate 5 à l'une des couches de mousse 1 et 2, dans ce cas-ci à la couche 2. Tous les cylindres sont ensuite collés les uns aux autres le long de bandes plates 6 tandis que des pièces d'about 7 terminent l'ensemble. On constitue ainsi un matelas qui peut également servir de matelas de complément et qui possède des caractéristiques élastiques excellentes réalisant une répartition idéale et un soutien de poids.Each cylinder 3 is bonded with at least one flat strip 5 to one of the foam layers 1 and 2, in this case to layer 2. All the cylinders are then bonded to each other on along flat strips 6 while end pieces 7 complete the assembly. This constitutes a mattress which can also be used as an additional mattress and which has excellent elastic characteristics achieving an ideal distribution and weight support.

Le procédé de fabrication d'un tel matelas est toutefois très compliqué. Aussi bien le collage des cylindres entre eux et aux couches 1 et 2, que l'enroulement des cylindres lui- même, prennent beaucoup de temps.The manufacturing process of such a mattress is however very complicated. Both bonding the rolls to each other and to layers 1 and 2, as well as winding the rolls itself, take a long time.

La forme d'exécution représentée à la figure 2 est également conçue pour permettre un montage rapide des éléments constitutifs sans renoncer aux caractéristiques du produit fini obtenu suivant la figure 1.The embodiment shown in FIG. 2 is also designed to allow rapid assembly of the constituent elements without giving up the characteristics of the finished product obtained according to FIG. 1.

Le matelas suivant la figure 2 comporte également deux couches de mousse 8 et 9 entre lesquelles se trouvent deux couches 10 et 11. Ces couches qui ont été découpées dans un seul et même bloc de matière en mousse, présentent un profil sinusoïdal, tout au moins à hauteur du côté qui doit entrer en contact avec les couches 8 et 9. Les couches 10 et 11, qui peuvent ou non être découpées dans un seul bloc de matière en mousse, présentent sur leurs côtés plats une série d'encoches quijj après que les côtés plats ont été collés les uns aux autres, forment des canaux 12 pouvant laisser passer les organes de raidissement tels que des bâtons en bois, par exemple.The mattress according to FIG. 2 also comprises two layers of foam 8 and 9 between which there are two layers 10 and 11. These layers which have been cut from a single block of foam material, have a sinusoidal profile, at least at the level of the side which must come into contact with the layers 8 and 9. The layers 10 and 11, which may or may not be cut from a single block of foam material, have on their flat sides a series of notches which after the flat sides have been glued to each other, form channels 12 which can let through the stiffening members such as wooden sticks, for example.

Grâce au découpage mécanique des couches 10 et 11 et à leur fixation mutuelle par les faces plates, on forme immédiatement entre ces couches, avec un minimum de travail manuel, une couche intermédiaire d'éléments cylindriques qui remplit la même fonction que les cylindres 3 réalisés suivant le mode d'exécution de la figure 1.Thanks to the mechanical cutting of layers 10 and 11 and to their mutual fixing by the flat faces, an intermediate layer of cylindrical elements is immediately formed between these layers, with a minimum of manual work, which fulfills the same function as the cylinders 3 produced. depending on the mode Figure 1.

Après finition de l'ensemble au moyen de pièces d'about, le matelas, également utilisable comme sous-matelas, doit encore être pourvu d'un recouvrement ou d'une housse ainsi que cela est du reste le cas pour le matelas de la figure 1.After finishing the assembly by means of end pieces, the mattress, which can also be used as a sub-mattress, must still be provided with a covering or a cover as is the case for the mattress of the figure 1.

Les caractéristiques mécaniques des matelas fabriqués suivant les deux formes d'exécution sont, en principe, les mêmes. Néanmoins, le matelas de la figure 2 procure une amélioration sensible si l'on compare le procédé utilisé pour sa fabrication à celui mis en oeuvre pour la forme de réalisation suivant la figure 1. Selon le premier procédé de réalisation, tous les cylindres 3 doivent être découpés dans des pièces plates en mousse et tous les cylindres ainsi réalisés doivent être aplatis sur trois bandes et être ensuite collés les uns aux autres ainsi qu'au côté intérieur des couches 1 et 2.The mechanical characteristics of the mattresses produced according to the two embodiments are, in principle, the same. However, the mattress of Figure 2 provides a significant improvement if we compare the method used for its manufacture to that used for the embodiment according to Figure 1. According to the first embodiment, all the cylinders 3 must be cut from flat pieces of foam and all the cylinders thus produced must be flattened on three strips and then be glued to each other as well as to the inner side of layers 1 and 2.

Le matelas obtenu suivant la figure 2 nécessite uniquement le découpage des couches lO et 11 suivant un profil sinusoïdal et le collage entre elles des deux faces plates qui se font face. La couche intermédiaire, ainsi constituée par les couches 10 et 11, peut être introduite très rapidement entre les couches 8 et 9 et être collée à celles-ci.The mattress obtained according to FIG. 2 only requires the cutting of the layers 10 and 11 according to a sinusoidal profile and the bonding between them of the two flat faces which face each other. The intermediate layer, thus constituted by layers 10 and 11, can be introduced very quickly between layers 8 and 9 and be bonded thereto.

Les extrémités de la couche intermédiaire, et celles des couches 8 et 9, sont collées aux pièces d'about 7.The ends of the intermediate layer, and those of layers 8 and 9, are glued to the end pieces 7.

En dehors des caractéristiques déjà citées du matelas faisant l'objet de la présente demande, on peut encore souligner que dans le cas d'un matelas pour lit de deux personnes une différence de poids éventuelle est bien compensée par la structure du matelas. Si la différence de poids dépasse les 30 kgs, la densité de la mousse de la partie du matelas qui supporte la charge la plus lourde peut être augmentée. Dans un lit de deux personnes, tous les éléments cylindriques, tant pour l'exécution suivant la figure 1 que selon celle suivant la figure 2, peuvent être coupés en deux dans la direction longitudinale de manière que les mouvements occasionnant des déformations dans une partie du matelas n'influencent pas l'autre partie.Apart from the characteristics already mentioned of the mattress which is the subject of the present application, it can also be emphasized that in the case of a mattress for a double bed, any difference in weight is well compensated for by the structure of the mattress. If the difference in weight exceeds 30 kgs, the density of the foam on the part of the mattress which supports the heaviest load can be increased. In a double bed, all the cylindrical elements, both for the execution according to FIG. 1 and according to that according to FIG. 2, can be cut in half in the longitudinal direction so that the movements causing deformations in part of the mattresses do not influence the other party.

L'invention n'est nullement limitée aux formes d'exécution décrites ci-avant et de nombreuses modifications peuvent y être apportées sans sortir du cadre de la demande de brevet.The invention is in no way limited to the embodiments described above and numerous modifications can be made thereto without departing from the scope of the patent application.

Il est évident par exemple que les parties du matelas qui sont réalisées mécaniquement selon le profil longitudinal désiré pourraient être réalisées selon d'autres méthodes telles, par exemple, que la coulée ou l'injection de ces parties dans des moules appropriés.It is obvious, for example, that the parts of the mattress which are produced mechanically according to the desired longitudinal profile could be produced by other methods such as, for example, that the casting or injection of these parts into suitable molds.

Par l'expression "collage", il faut comprendre toutes les techniques équivalentes par lesquelles une pièce en mousse synthétique ou en caoutchouc naturel peut être fixée à une autre.By the term "bonding" is meant all the equivalent techniques by which one piece of synthetic foam or natural rubber can be attached to another.

Quoique la mousse synthétique, à base de polyuréthane soit préférée, toutes les autres matières présentant des caractéristiques identiques ou analogues peuvent entrer en considération.Although synthetic foam, based on polyurethane is preferred, all other materials having identical or analogous characteristics may be taken into consideration.

Finalement, les éléments de rigidification en bois peuvent être remplacés par des éléments en d'autres matériaux pour autant que ceux-ci n'alourdissent pas exagérément le matelas.Finally, the wooden stiffening elements can be replaced by elements made of other materials provided that these do not excessively weigh down the mattress.

Claims (9)

l.Matelas caractérisé en ce qu'il comprend deux couches de mousse (1,2 ; 8,9) entre lesquelles est disposée une couche intercalaire composée d'une série d'éléments cylindriques (3;10,11) dont l'axe longitudinal esr perpendiculaire à la longueur du matelas et qui sont munis selon cet axe d'un organe de raidissement (4).l.Mattress characterized in that it comprises two layers of foam (1,2; 8,9) between which is disposed an intermediate layer composed of a series of cylindrical elements (3; 10,11) whose axis longitudinal esr perpendicular to the length of the mattress and which are provided along this axis with a stiffening member (4). 2.Matelas suivant la revendication 1 caractérisé en ce que les éléments cylindriques (3;10,11) sont formés d'au moins une couche de mousse présentant, en coupe longitudinale, des deux côtés du plan symétrique longitudinal, un profil sinusoïdal.2. Mattress according to claim 1 characterized in that the cylindrical elements (3; 10,11) are formed of at least one layer of foam having, in longitudinal section, on both sides of the longitudinal symmetrical plane, a sinusoidal profile. 3.Matelas suivant la revendication précédente caractérisé en ce que la couche en mousse précitée présentant en coupe longitudinale, des deux côtés du plan symétrique longitudinal un profil sinusoïdal, se compose de deux couches de mousse (10,11) dont les faces plates se font face.3. Mattress according to the preceding claim characterized in that the aforementioned foam layer having in longitudinal section, on both sides of the longitudinal symmetrical plane a sinusoidal profile, consists of two layers of foam (10,11) whose flat faces are face. 4.Matelas suivant la revendication précédente caractérisé en ce que les faces plates précitées sont collées l'une à l'autre.4. Mattress according to the preceding claim characterized in that the aforementioned flat faces are glued to one another. 5.Matelas suivant la revendication 1 caractérisé en ce que les éléments cylindriques précités sont collés par au moins une bande longitudinale à l'une des couches en mousse susdites.5. Mattress according to claim 1 characterized in that the aforementioned cylindrical elements are bonded by at least one longitudinal strip to one of the above foam layers. 6.Matelas suivant la revendication 5 caractérisé en ce que chacun des éléments cylindriques précités est collé par une autre bande longitudinale à une bande identique d'un élément cylindrique voisin.6. Mattress according to claim 5 characterized in that each of the aforementioned cylindrical elements is bonded by another longitudinal strip to an identical strip of a neighboring cylindrical element. 7.Matelas suivant l'une quelconque des revendications 1 à 6 caractérisé en ce que l'organe de raidissement (4) trouvant dans l'axe de chacun des éléments cylindriques précités est collé à la mousse.7. Mattress according to any one of claims 1 to 6 characterized in that the stiffening member (4) located in the axis of each of the above cylindrical elements is bonded to the foam. 8.Matelas suivant l'une quelconque des revendications 1 à 7 caractérisé en ce que l'organe de raidissement (4) précité est constitué par un bâton en bois.8. Mattress according to any one of claims 1 to 7 characterized in that the stiffening member (4) above is constituted by a wooden stick. 9.Matelas suivant l'une quelconque des revendications 1 à 8 caractérisé en ce que, lorsqu'il s'agit d'un matelas de deux personnes, il est coupé en deux dans la direction longitudinale.9. Mattress according to any one of claims 1 to 8 characterized in that, when it is a mattress of two people, it is cut in half in the longitudinal direction.
EP81870003A 1980-01-11 1981-01-09 Mattress Withdrawn EP0032486A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE198943 1980-01-11
BE0/198943A BE881121A (en) 1980-01-11 1980-01-11 MATTRESS.

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Publication Number Publication Date
EP0032486A2 true EP0032486A2 (en) 1981-07-22
EP0032486A3 EP0032486A3 (en) 1981-11-25

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EP81870003A Withdrawn EP0032486A3 (en) 1980-01-11 1981-01-09 Mattress

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US (1) US4407031A (en)
EP (1) EP0032486A3 (en)
BE (1) BE881121A (en)
IT (1) IT1146126B (en)
ZA (1) ZA81132B (en)

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DK146752C (en) * 1978-09-05 1984-06-12 Poly Saks Aps MADRAS OR PUMP OF FOAM PLASTIC

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* Cited by examiner, † Cited by third party
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FR709641A (en) * 1930-09-11 1931-08-11 Air permeable mattresses, cushions and the like
BE657626A (en) * 1964-12-24 1965-04-16 Jean Pankert Sa Ets Improvements to mattresses.
DE2701798A1 (en) * 1977-01-18 1978-07-20 Friedrich Breckle Well ventilated foam mattress with longitudinal flexibility - has foam tubes placed cross-wise down between foam mats with ventilation ducts inbetween
FR2403765A1 (en) * 1977-09-21 1979-04-20 Breckle Friedrich Multilayered mattress with ventilation and flexibility - has one-piece core layer with undulations providing articulated sections (OE 15.10.78)
EP0018046A2 (en) * 1979-04-20 1980-10-29 Marpal AG Upper mattress with a foam plastics interior

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2118833A (en) * 1982-04-14 1983-11-09 William David Gresham Support or cushioning arrangement
GB2246070A (en) * 1990-07-17 1992-01-22 Koichi Hirata Cushion material
GB2246070B (en) * 1990-07-17 1994-05-11 Koichi Hirata Cushion material
US6857151B2 (en) * 2002-04-25 2005-02-22 Gaymar Industries, Inc. Bead cushioning device

Also Published As

Publication number Publication date
BE881121A (en) 1980-05-02
ZA81132B (en) 1982-01-27
US4407031A (en) 1983-10-04
IT8048146A0 (en) 1980-03-13
IT1146126B (en) 1986-11-12
EP0032486A3 (en) 1981-11-25

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