WO2000065962A1 - Matelas en mousse composite presentant des stratifications multiples - Google Patents

Matelas en mousse composite presentant des stratifications multiples Download PDF

Info

Publication number
WO2000065962A1
WO2000065962A1 PCT/US2000/012411 US0012411W WO0065962A1 WO 2000065962 A1 WO2000065962 A1 WO 2000065962A1 US 0012411 W US0012411 W US 0012411W WO 0065962 A1 WO0065962 A1 WO 0065962A1
Authority
WO
WIPO (PCT)
Prior art keywords
outer layer
inflatable body
layer
resilient material
type
Prior art date
Application number
PCT/US2000/012411
Other languages
English (en)
Other versions
WO2000065962A9 (fr
Inventor
Peter O. Frickland
James E. Marson
Original Assignee
Cascade Designs, Inc.
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Cascade Designs, Inc. filed Critical Cascade Designs, Inc.
Priority to AU49907/00A priority Critical patent/AU4990700A/en
Publication of WO2000065962A1 publication Critical patent/WO2000065962A1/fr
Publication of WO2000065962A9 publication Critical patent/WO2000065962A9/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/18—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by features of a layer of foamed material
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C17/00—Sofas; Couches; Beds
    • A47C17/64—Travelling or camp beds
    • 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
    • A47C27/08—Fluid mattresses or cushions
    • A47C27/081—Fluid mattresses or cushions of pneumatic type
    • A47C27/084—Fluid mattresses or cushions of pneumatic type self inflating
    • 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
    • A47C27/08—Fluid mattresses or cushions
    • A47C27/088—Fluid mattresses or cushions incorporating elastic bodies, e.g. foam
    • 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
    • A47C27/18—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas with foamed material inlays in combination with inflatable bodies
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B32B3/28—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by a layer comprising a deformed thin sheet, i.e. the layer having its entire thickness deformed out of the plane, e.g. corrugated, crumpled
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/32—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed at least two layers being foamed and next to each other
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2266/00—Composition of foam
    • B32B2266/06—Open cell foam
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2266/00—Composition of foam
    • B32B2266/08—Closed cell foam
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2471/00—Floor coverings
    • B32B2471/04—Mats

Definitions

  • the present invention pertains to the field of self-inflating ground pads, and more particularly to those having a multiple laminate foam construction.
  • closed cell foam pads are highly durable in that they are not easily torn and if punctured, have no noticeable decrease in performance, stow easily, and are light in weight; self-inflating pads as described above are very comfortable, easily compressible and stow easily.
  • closed cell foam pads are not inherently comfortable and self-inflating pads are not highly durable and are often noticeably more expensive to manufacture than closed cell foam pads.
  • pads are also used, although their use in the field of outdoor recreation has been more limited. These pads utilize one or more foam slabs surrounded by, but not bonded to, a fabric shell. In this respect, these pads resemble certain traditional household mattresses. While these pads are rather inexpensive to manufacture and are considered to be comfortable, they provide little resistance to water absorption, do not stay compressed for storage without an auxiliary compression strap system, and are not durable when compared to other technologies such as closed cell foam products. Water absorption in particular can make the pads cold and noninsulating while making them heavier to carry. Both are highly undesirable features in a ground pad used for hiking and mountaineering.
  • the present invention combines the desirable qualities of traditional closed cell foam pads with the advantages inherent in a self-inflating pad.
  • a pad according to the invention comprises a first outer layer constructed from a first type of resilient material which defines an outer surface, an inner surface, and a perimeter portion; a second outer layer constructed from a second type of resilient material which defines an outer surface, an inner surface, and a perimeter portion; and an inner layer constructed from a third type of resilient material which defines a first major surface, a second major surface, and a perimeter portion wherein the inner layer is disposed between and permanently bonded at least in part to the inner surface of the first outer layer and the inner surface of the second outer layer.
  • the perimeter portions of the first and second outer layers are bonded to one another to form a substantially fluid tight seal, thereby shielding the inner layer from exposure to the elements.
  • the invention may be fitted with a valve closable at user discretion, or one or more apertures may be formed in either outer layer to permit passive ingress and egress of fluid into and out of the chamber.
  • the inner layer is constructed of a foamed thermoset polymeric material having a stiffness of between about 10 and 45 lb 25% IFD and a density of between about 0.7 and 2.5 lbs/ft 3 , and preferably having a stiffness of between about 30 and 40 lb 25% IFD and a density of between about 1.0 and 1.7 lbs/ft 3 .
  • Sectional thickness of the inner layer can range between about 0.25" to 4", and preferably between about 1.0" and 1.75". Best results have been achieved using an open cell, flexible, slabstock polyurethane foam.
  • the nature of the core is not essential to the invention insofar as any compliant or resilient material of homogenous or heterogeneous composition that provides a desirable level of stiffness, resilience, compressibility, and insulative characteristics will suffice.
  • the core can be comprised of discrete portions having differing 25% IFD values such as is described in United States Patent number 5,282,286, which is incorporated herein by reference; it can be contoured prior to any thermoforming or subsequent fabrication steps as detailed below; it can be modified as described in United States Patent number 5,705,252, which is also incorporated herein by reference.
  • the first outer layer (for convention purposes the upper layer which contacts a user) is constructed of a closed cell foamed thermoplastic polymeric material having a density of between about 0.5 and 20 lbs/ft 3 , and preferably having a density of about 2 lbs/ft 3 .
  • Sectional thickness of the first outer layer can range between about 0.005" to 0.75", and preferably about 0.25".
  • the second outer layer (for convention purposes the lower layer which contacts the ground) is constructed of a closed cell foamed thermoplastic polymeric material having a density of between about 0.5 and 20 lbs/ft 3 , and preferably having a density of about 3 lbs/ft 3 .
  • Sectional thickness of the first outer layer can range between about 0.005" to 0.5", and preferably about 0.125". Best results for both the first and the second outer layers have been achieved using a closed cell, flexible, polyolefin foam.
  • the foam consists of polyethylene and ethylene vinyl acetate (EVA) wherein the EVA content is between about nominal to 20% by weight.
  • selection of material for use as the inner or core layer is not limited to varieties of closed cell foam used with a preferred embodiment. Those persons skilled in the art will realize the broad scope of materials having the requisite level of stiffness, resilience, compressibility, and insulative characteristics. While use of closed cell foam material for the second or bottom layer is preferred, it is within the scope of the invention to use sheet material such as solid polyethylene to form either or both of the top and bottom iayers.
  • Bonding between the inner layer and the two outer layers can be achieved by any traditional means for bonding the resilient materials selected to construct the invention. Thus, direct thermal bonding, flame laminating, or chemical adhering are within the scope of possibilities for bonding the layers.
  • latex based adhesive PO9050 manufactured by Bostik, Inc., or Fastbond 100 neoprene-based adhesive by 3M provide a suitable bond between the several layers when used according to the manufacturers recommendations.
  • the bonding process referenced above is preferably enhanced by using thermoforming. In such a process, the laminate set up is subjected to heat and compression to ensure that the bond at the layer interfaces is complete and coextensive.
  • thermoforming the pad not only enhances the bond, but can also be used to establish any perimeter bond and outer surface details.
  • Fig. 1 is a perspective view of the invention shown in a rolled or stowed state
  • Fig. 2 is an end elevation view of the invention shown in Fig. 1 ;
  • FIG. 3 is a perspective view of the invention shown in an unrolled or ready to use state
  • Fig. 4 is a perspective detail of a portion of the invention shown in Fig. 3;
  • Fig. 5 is a cross section elevation taken substantially along the line 5 - 5 in Fig. 4 detailing the contours of the various foam materials used to construct the invention
  • Fig. 5a is a perspective view in partial cross section of an alternative embodiment wherein the upper surface contours or features are transverse ribs;
  • Fig. 6 is a partial perspective view of the lower side of the invention.
  • Fig. 7 is a partial perspective view of the upper side of the invention wherein the several foam laminates are partially peeled away;
  • Fig. 8 is a plot of pad deflection versus a10 inch 2 surface load comparing a non-contoured pad and a pad having features molded in the upper surface thereof;
  • Fig. 9 is a plot of maximum fill height versus contour diameter (dimensionless) illustrating certain permissible ratios between these two values when creating contours that must be filled by a foam core during manufacture and having a schematic inset showing the testing apparatus.
  • Pad 10 comprises upper shell portion 20, lower shell portion 30, and core 40, alternatively referred to as first layer 20, second layer 30, and third layer 40.
  • Upper shell portion 20 has outer surface 22, inner surface 24, and perimeter portion 26; similarly lower shell portion 30 has outer surface 32, inner surface 34, and perimeter portion 36.
  • Core 40 has first major surface 42 and second major surface 44 in addition to peripheral surface 46. Both shell inner surfaces 24 and 34 are wholly bonded to, respectively, major surfaces 42 and 44 of core 40.
  • Upper shell portion 20 is bonded at its perimeter portion 26 to perimeter portion 36 of lower shell, thereby encasing core 40 and defining an enclosed volume . It should be noted, however, that a perimeter portion of core 40 may be disposed between inner surfaces 24 and 34 only to the extent that such interposition does not negatively affect the bonding of the two portions.
  • the straps 50a and 50b and their attachment mechanism 60 are removable and optional.
  • Upper shell portion 20 is preferably formed from a 24" wide and 72" long slab of closed cell polyethylene and ethylene vinyl acetate foam material having a maximum EVA content from about nominal to 10%. Those persons skilled in the art will appreciate the effect that the addition of EVA will provide, namely enhanced flexibility. Thus, while durability of upper shell portion 20 is desirable, the overall comfort of this layer should not be sacrificed in favor of durability as compared to lower shell portion 30 described in detail below.
  • Final sectional thickness is preferably about 0.25" based upon the overall dimensions of pad 10 described herein, although the acceptable range is from about 0.005" to 0.5".
  • Upper shell portion 20 preferably has a density of about 2 lbs/ft 3 , although the range can be from 0.5 to about 20 lbs/ft 3 .
  • a beneficial feature of upper shell portion 20 is that the chosen material is inherently hydrophobic. Consequently, water and water based solvents are not drawn towards shell portion 20. Thus, core 40 tends to remain dry as will be described in more detail below.
  • Lower shell portion 30 is also preferably formed from a 24" wide and 72" long slab of closed cell polyethylene and ethylene vinyl acetate foam having a maximum EVA content of about from nominal to 2% depending upon the degree of toughness desired. Sectional thickness is preferably about 0.125" based upon the overall dimensions of pad 10 described herein, although the acceptable range is from about 0.005" to 0.5". Upper shell portion 20 preferably has a density of about 3 lbs/ft 3 , although the range can be from 0.5 to about 20 lbs/ft 3 . As with upper shell portion 20, the selected material is inherently hydrophobic. The densities for both lower and upper sections are defined by The American Society for Testing Materials (ASTM) in method D-3575.
  • ASTM American Society for Testing Materials
  • core 40 is preferably formed from a 24" wide and 72" long slab of open cell polyurethane foam having a sectional thickness of about 1.25" based upon the overall dimensions of pad 10 described herein, although the acceptable range is from about 0.25" to 4".
  • Core 40 preferably has a density of about 1.45 lbs/ft 3 and a stiffness 25%IFD value of 36 lbs., although the density range can be from 0.5 to about 20 lbs/ft 3 and the 25% IFD stiffness value range can be from 10 to 45 lbs.
  • the values of density and IFD are defined by the American Society for Testing and Materials (ASTM) in Method 3574.
  • the width and length dimensions of core 40 are slightly less than the overall pad dimensions since it is wholly surrounded by upper shell portion 20 and lower shell portion 30. In this manner, when perimeter portions 26 and 36 are joined as described below, no portion of core 40 is exposed directly to the environment. Consequently, the hydrophilic nature of core 40 will not degrade from the performance of pad 10 by contact leaching of moisture from the environment.
  • core 40 has a relatively high stiffness for the given density.
  • a high stiffness value would otherwise provide less comfort to a user.
  • upper shell portion 20 is constructed from a foam having a relatively high density, localized compression loading of this surface is distributed across a greater area of core 40 than would be possible using a flexible fabric shell.
  • a greater self-inflation biased foam can be used, which also provides for enhanced support features without sacrificing user comfort.
  • a very low density core can be used without sacrificing performance of pad 10. Because the instant invention is vented to atmosphere, a higher IFD foam is used to provide adequate support to prevent the user from "bottoming out" onto the ground.
  • the deflection or compliance characteristics of a given upper shell portion material can be varied by forming certain details therein. As best shown in Fig. 8, greater deflection or compliance of pad 10 can be achieved when certain modifications in the form of features are formed in upper shell portion 20 as compared to a similar pad not having features formed therein. It is also beneficial to note the relatively smooth deflection curve produced by pad 10 when incorporating upper shell features.
  • conventional self-inflating pads have a desirable compliance curve until the portion of the core subject to loading is fully compressed, where after the compliance values sharply level off.
  • the contours or details noted above preferably take the form of a series of convex dome protrusions 12 that are formed in upper shell portion 20.
  • the second factor related to user perception of comfort included whether the contours would enhance or degrade use or storage of a pad, deleteriously affect the insulation properties of a pad, and withstand being rolled and compressed for long periods without being permanently deformed.
  • contours or details having sharp edges or deep profiles would likely decrease the ability of inner surface 24 of upper shell portion 20 to bond with major surface 42 of core 40.
  • the nature of any given detail should not include radical areas of surface transition or nook and crannies that would be difficult for the core material to occupy.
  • the inventors formed holes of various diameters in a compression die and subjected core 40, consisting of a 36 lb. 25% IFD, 1.45 Ib./ft 3 density slab of polyurethane foam, to various compression loads.
  • core 40 consisting of a 36 lb. 25% IFD, 1.45 Ib./ft 3 density slab of polyurethane foam
  • the results of these tests, shown in Fig. 9, assisted the inventors in determining the permissible physical parameters for any potential detail: because the core material would only extend to a limited degree during manufacturing compression based upon a given hole dimension, the selected detail would have to have a volume equal to or less than the observed core volume extending beyond the compression die, and have complimentary physical parameters.
  • selection of a detail that would retain sufficient contact with the core material would ensure that there would be sufficient bonding between the core and the upper shell portion.
  • protrusions 12 are aligned in rows wherein outer surface 22 of upper shell portion 20 has transverse unadultered portions 14 (see Fig. 4) so that pad 10 will accept transverse creases when rolled for storage.
  • every other row of protrusions 12 are longitudinally aligned, with every row being laterally offset from the adjacent rows by a factor of about ⁇ protrusion. This offset prevents longitudinally adjacent protrusions 12 from directly interfering with each other when pad 10 is rolled for storage purposes.
  • FIG. 5a An alternative embodiment to that shown in Figs. 1-5 is shown in Fig. 5a.
  • a series of transverse lands 14a are formed in outer surface 22 of upper shell portion 20.
  • Protrusions 12a take the form of ribs as opposed to the domed convex protrusions 12 shown in Figs. 4 and 5. Similar parameters are used to evaluate the physical dimensions of protrusions 12a as were considered with respect to protrusions 12.
  • transverse lands 16 are formed in lower shell portion 30. These lands correspond sectionally with transverse unadulterd portions 14 in upper shell portion 20 as best shown in Fig. 5, thereby creating transverse portions of pad 10 that naturally accept a folding bias. Consequently, by segmenting pad 10 in such a manner, it more readily rolls for storage as demonstrated in Fig. 2, and more readily accepts a planar shape after initial inflation. In addition, these lands impart transverse beam strength to the pad, which mitigates against pad distortion during rolling. Beam rigidity during rolling aids in the compression of inner core 40 resulting in a smaller stowed volume.
  • a higher density closed cell foam is chosen for the lower shell 30.
  • a higher density foam generally will have superior tensile, tear and abrasion resistance as will be needed on a shell contacting the ground.
  • lands 18a and 18b are also formed in lower shell portion 30 .
  • These features are intended to provide a convenient means for locating compression straps 50a and 50b (see Figs. 1 and 3).
  • the higher density material present at lands 18a and 18b will increase durability of pad 10 in these areas that will be subject to repeated abrasion from strap use and high compression loads. While lands 18a and 18b need not extend the entire length of pad 10, for convenience they do so.
  • the present invention may provide for active or passive inflation and deflation.
  • Active inflation and deflation is defined as involving user intervention, usually by way of operation of a valve that is in fluid communication with the interior chamber defined by upper shell portion 20 and lower shell portion 30.
  • Passive inflation and deflation is defined as not involving user intervention, except for compressing and expanding the volume of pad 10 such as when stowing or using the same.
  • the chamber defined thereby is capable of maintaining a constant volume of fluid or air.
  • core 40 is wholly bonded at its major surfaces 42 and 44 to the outer shells, core 40 is caused to act as a tension member.
  • pad 10 can also be, and is preferably, used in the passive mode.
  • a plurality of slits 28 are formed in outer surface 22 of upper shell portion 20. It is desirable to place slits 20 at the top of protrusions 12 so that water is less likely to accumulate over them.
  • These slits have a normal closure bias as a function of material selection so that only when an above nominal pressure differential exists between the environment and the chamber will pad 10 passively inflate or deflate.
  • upper shell portion 20 is constructed from inherently hydrophobic material, contact moisture migration is all but eliminated, thus preserving the integrity of core 40, which is noticeably hydrophilic.

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Nursing (AREA)
  • Mattresses And Other Support Structures For Chairs And Beds (AREA)

Abstract

Matelas compressible possédant une partie centrale élastique (40) totalement entourée par une couche supérieure (20) et une couche inférieure (30), et adhérant à ces couches, en matériau moins élastique, lesdites couches adhérant l'une à l'autre au niveau de leur périmètre commun afin de constituer un élément circonscrit. Dans un mode de réalisation, une couche comporte une pluralité de fentes (28) permettant, de façon passive, à l'air de rentrer dans la partie centrale occupée par du vide et d'en sortir. Dans un autre mode de réalisation, une valve est située entre le milieu ambiant et la partie centrale afin de laisser l'air entrer et sortir. L'invention est caractérisée par le fait que la surface supérieure et/ou inférieure du matelas comporte des profils (12) permettant de modifier ses propriétés de pliage et/ou de faciliter son rangement ou son gonflage. Les couches supérieure et inférieure sont, de préférence, constituées par de la mousse à alvéoles fermées et la partie centrale est constituée par de la mousse à alvéoles ouvertes.
PCT/US2000/012411 1999-05-05 2000-05-05 Matelas en mousse composite presentant des stratifications multiples WO2000065962A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU49907/00A AU4990700A (en) 1999-05-05 2000-05-05 Composite foam mattress having multiple laminate construction

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US13266999P 1999-05-05 1999-05-05
US60/132,669 1999-05-05

Publications (2)

Publication Number Publication Date
WO2000065962A1 true WO2000065962A1 (fr) 2000-11-09
WO2000065962A9 WO2000065962A9 (fr) 2002-01-03

Family

ID=22455064

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2000/012411 WO2000065962A1 (fr) 1999-05-05 2000-05-05 Matelas en mousse composite presentant des stratifications multiples

Country Status (2)

Country Link
AU (1) AU4990700A (fr)
WO (1) WO2000065962A1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003037145A1 (fr) * 2001-10-30 2003-05-08 Gualtiero Giori Dispositif de support de mousse reglable par pression
WO2004084157A1 (fr) * 2003-03-17 2004-09-30 James Peter Mason Amelioration concernant les modeles de terrain
CH703433A1 (de) * 2010-07-01 2012-01-13 Mammut Sports Group Ag Sprungpolster.
EP2517608A1 (fr) * 2011-04-26 2012-10-31 Nightgear LLC Accessoire de coussin de siège
US8584287B2 (en) 2009-12-24 2013-11-19 Johnson Outdoors Inc. Air mattresses
WO2014085182A1 (fr) * 2012-11-28 2014-06-05 Corning Incorporated Tampons, procédés de formation de marque de rainurage, et procédés de découpe d'une feuille de verre
GB2486246B (en) * 2010-12-09 2016-01-27 Gillian Frettsome Self-inflatable outdoor furniture cushion
IT202000016345A1 (it) * 2020-07-07 2022-01-07 Leva S P A Pannello multistrato termoplastico, in particolare per componenti interni di autoveicoli, e processo di produzione.

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3872525A (en) * 1972-01-10 1975-03-25 James M Lea Inflatable foam pad
US4357725A (en) * 1979-01-10 1982-11-09 Ab Wilh. Becker Body-support devices
US4624877A (en) * 1983-11-04 1986-11-25 Cascade Designs, Inc. Inflatable mattress and method of making the same
US5274846A (en) * 1990-06-12 1994-01-04 Hpi Health Protection, Inc. Cushion having multilayer closed cell structure

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3872525A (en) * 1972-01-10 1975-03-25 James M Lea Inflatable foam pad
US4357725A (en) * 1979-01-10 1982-11-09 Ab Wilh. Becker Body-support devices
US4624877A (en) * 1983-11-04 1986-11-25 Cascade Designs, Inc. Inflatable mattress and method of making the same
US5274846A (en) * 1990-06-12 1994-01-04 Hpi Health Protection, Inc. Cushion having multilayer closed cell structure

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003037145A1 (fr) * 2001-10-30 2003-05-08 Gualtiero Giori Dispositif de support de mousse reglable par pression
WO2004084157A1 (fr) * 2003-03-17 2004-09-30 James Peter Mason Amelioration concernant les modeles de terrain
US7520748B2 (en) 2003-03-17 2009-04-21 James Peter Mason Modelling terrain improvements
US8584287B2 (en) 2009-12-24 2013-11-19 Johnson Outdoors Inc. Air mattresses
CH703433A1 (de) * 2010-07-01 2012-01-13 Mammut Sports Group Ag Sprungpolster.
GB2486246B (en) * 2010-12-09 2016-01-27 Gillian Frettsome Self-inflatable outdoor furniture cushion
EP2517608A1 (fr) * 2011-04-26 2012-10-31 Nightgear LLC Accessoire de coussin de siège
WO2014085182A1 (fr) * 2012-11-28 2014-06-05 Corning Incorporated Tampons, procédés de formation de marque de rainurage, et procédés de découpe d'une feuille de verre
IT202000016345A1 (it) * 2020-07-07 2022-01-07 Leva S P A Pannello multistrato termoplastico, in particolare per componenti interni di autoveicoli, e processo di produzione.

Also Published As

Publication number Publication date
AU4990700A (en) 2000-11-17
WO2000065962A9 (fr) 2002-01-03

Similar Documents

Publication Publication Date Title
US6108835A (en) Camping mat arrangement
US4149919A (en) Method of making a self-inflating air mattress
US6651277B1 (en) Multiple chamber self-inflatable body
US5152018A (en) Batting filled self inflatable body
US5452487A (en) Insulated puncture resistant inflatable mattress
US4642912A (en) Shoe insole
EP3095490B1 (fr) Vessie de ballon de sport
US5117517A (en) Self inflating camping mattress
US5675855A (en) Self-inflating air mattress
US6128837A (en) Three dimensional shoe vamp air cushion
US6745420B2 (en) Adjustable foam and coil spring mattress combination
US7165283B2 (en) Increased height inflatable support system
EP0963165B1 (fr) Ballonnets elastiques a contours complexes
US6484340B2 (en) Ventilated mattress core
US5902660A (en) Double buffered air cushion assembly
US5974608A (en) Camping mattress with cradling cushions
WO1994019990A1 (fr) Poignee a coussin d'air munie d'une pompe
US5322730A (en) Elastic permeable material and method of making same
WO1999034967A3 (fr) Vessie elastique destinee a etre utilisee dans des chaussures et son procede de fabrication
WO1995022922A1 (fr) Coussin, matelas ou analogue et elements elastiques associes
WO2008079641A1 (fr) Chambre de renfort gonflable
US20110154574A1 (en) Air mattresses
WO2000065962A1 (fr) Matelas en mousse composite presentant des stratifications multiples
EP1924171A1 (fr) Systeme pneumatique de support constitue de polyurethanne thermoplastique
CA2057563C (fr) Systeme de soutien a deplacement d'air amorti

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AU CA JP US

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE

121 Ep: the epo has been informed by wipo that ep was designated in this application
DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
AK Designated states

Kind code of ref document: C2

Designated state(s): AU CA JP US

AL Designated countries for regional patents

Kind code of ref document: C2

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE

COP Corrected version of pamphlet

Free format text: PAGES 1/6-6/6, DRAWINGS, REPLACED BY NEW PAGES 1/6-6/6; DUE TO LATE TRANSMITTAL BY THE RECEIVING OFFICE

122 Ep: pct application non-entry in european phase
NENP Non-entry into the national phase

Ref country code: JP