EP0734669A1 - Schaumstoffkissen - Google Patents

Schaumstoffkissen Download PDF

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Publication number
EP0734669A1
EP0734669A1 EP96301203A EP96301203A EP0734669A1 EP 0734669 A1 EP0734669 A1 EP 0734669A1 EP 96301203 A EP96301203 A EP 96301203A EP 96301203 A EP96301203 A EP 96301203A EP 0734669 A1 EP0734669 A1 EP 0734669A1
Authority
EP
European Patent Office
Prior art keywords
limb
limbs
foam cushion
foam
cushion 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.)
Withdrawn
Application number
EP96301203A
Other languages
English (en)
French (fr)
Inventor
James Barrie Sutton
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Recticel Ltd
Original Assignee
Recticel Ltd
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
Priority claimed from GBGB9503999.6A external-priority patent/GB9503999D0/en
Application filed by Recticel Ltd filed Critical Recticel Ltd
Publication of EP0734669A1 publication Critical patent/EP0734669A1/de
Withdrawn legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C27/00—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas
    • A47C27/14—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas with foamed material inlays
    • A47C27/142—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas with foamed material inlays with projections, depressions or cavities
    • A47C27/144—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
    • A47C27/148—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas with foamed material inlays of different resilience
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C27/00—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas
    • A47C27/14—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas with foamed material inlays
    • A47C27/15—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas with foamed material inlays consisting of two or more layers

Definitions

  • the present invention relates to foam cushions.
  • the term "cushion” shall, for the avoidance of doubt, include both upholstery seats and mattresses as well as other applications.
  • the main weight bearing part of the cushion includes a plurality of helical springs surrounded by a foam material such as a polyurethane foam.
  • foam material such as a polyurethane foam
  • a foam cushion comprising a body within which there are a plurality of cavities.
  • cavities means those gaps or spaces having dimensions substantially greater than those of the cells of the foam forming the body of the material. "Cavity” shall be construed accordingly.
  • the foam comprises a polyurethane foam.
  • the body comprises at least two limbs in which the cavities are defined between the two limbs.
  • the two limbs are connected.
  • each limb comprises proud portions and recessed portions.
  • the proud and recessed portions on one limb are substantially similar, but in an opposing orientation, to those on the at least one other limb.
  • At least some of the proud portions of two limbs abut against each other, whereby at least some of the recessed portions are adjacent one another to define cavities.
  • At least one limb is joined to another part of the body.
  • an end piece adjacent a free end of a limb to enable the limb to be joined thereto.
  • the end piece is connected to another limb.
  • limbs there are provided three limbs, a central limb, a first limb on one side of the central limb and a second limb on the other side of the central limb.
  • a seat or mattress including a foam cushion according to the first aspect of the present invention.
  • a foam cushion suitable for use as a cushion in accordance with the first aspect of the present invention comprising the steps of:
  • Figure 1 is a schematic end view of a first embodiment of a foam cushion in accordance with the present invention in its post-production configuration.
  • Figure 2 is a schematic elevation of the first embodiment shown in Figure 1 in its in use configuration.
  • Figure 3 is a schematic end elevation of a second embodiment of the present invention in its in use configuration.
  • Figure 4 is a schematic end elevation of the second embodiment of the present invention in a second, post production, configuration.
  • Figure 5 is a schematic end elevation of the second embodiment of the present invention in a third configuration between the in use and post production configuration.
  • Figure 6 is a schematic end elevation of a third embodiment of the present invention in its in use configuration.
  • Figure 7 is a schematic end elevation of the third embodiment of the present invention in its post production configuration.
  • Figure 8 is a schematic end elevation of a fourth embodiment of the present invention in its in use configuration.
  • Figure 9 is a schematic end elevation of the fourth embodiment of the present invention in its post production configuration.
  • Figure 10 is a schematic end elevation of a fifth embodiment of the present invention in its in use configuration.
  • a foam cushion 2 comprising a body 4 formed from a polyurethane foam material having elastomeric resilient properties.
  • the body 4 is shaped in cross-section, for use as a cushion.
  • the body 4 comprises two limbs, first limb 6 and second limb 8 joined at a juncture 10.
  • the limbs 6, 8 are separated by a cut line 12.
  • the cut line 12 defines a substantially castellated configuration between the two limbs 6,8.
  • the two limbs 6,8 are pulled apart, the first limb 6 is stretched away from the juncture 10 of the limbs 6, 8 to align the castellations (as shown in Figure 2).
  • the end 16 of the body 4 distant from the juncture 10 is then glued, and each of the proud portions 18 of one limb 6, 8 are glued to the opposing proud portions of the other limb 8, 6, securing the limbs 6, 8 together.
  • the slits 14 allow for the stretching of the first limb 6 without substantial deformation of the remainder of the body 4.
  • the slits 14 can be seen to be expanded by the stretching the body has undergone.
  • the cushion 2 can readily be incorporated into a seat or mattress.
  • the inclusion of the cavities (produced by recesses 20) in the cushion 2 has, surprisingly, been found to reproduce the "spring effect" of prior art cushions. In this way, the need for polyester wrapping or other wraps found to be necessary around conventional cushions is avoided.
  • the two limbs can be formed from a foam block by a single cut, typically using a computer numerically controlled cutting machine of the type well known in the art.
  • a foam cushion 22 comprising a body 24.
  • the material of the body 24 is substantially similar to that of the first embodiment of the present invention described in relation to Figures 1 and 2 of the drawings that follow.
  • the body 24 comprises a central limb 26 on one side of which is a first limb 28 and on the other side of which is a second limb 30.
  • the central limb 26 is joined to the first limb 28 at one end at juncture 29.
  • the central limb 26 is joined to the second limb 30 at the same end at juncture 31.
  • first spacing element 40 which tapers towards the juncture 29 of the first limb 28 and central limb 26.
  • a wedge-shaped second spacing element 50 which tapers towards the juncture 31 of the second limb 30 and central limb 26.
  • the central limb 26 and first limb 28 are spaced apart by first spacing element 40.
  • the central limb 26 and second limb 30 are spaced apart by second spacing element 50.
  • a T-shaped element 52 At the end of the central limb 26 distant from the junctures 29 and 31, there is provided a T-shaped element 52, the arms 54 of which extend over the ends of the first and second limbs 28, 30 respectively.
  • the limbs 28, 30 and/or spacing elements 40, 50 are adhered to the arms 54.
  • the cushion 22 can readily be incorporated into a seat or mattress.
  • the inclusion of the cavities (produced by recesses 34, 38, 44 and 48) in the cushion 22 have substantially the same effect as in relation to the first embodiment.
  • the spacing elements 40, 50 enhance the "spring effect" in particular when produced in a narrowing, wedge-shape as shown in Figures 3-5.
  • this second embodiment of the present invention could also be formed from a foam block by a single cut, typically using a computer numerically controlled cutting machine of the type well known in the art. This is set out further below.
  • the post-production configuration of the cushion 22 can be seen.
  • the line of cut used to produce the body 24 is shown. It is noted that the cushion 22 can be cut out in a single cutting action with minimal waste.
  • Figure 5 shows how the body 24 can be reconfigured from the post production configuration of Figure 4 to the in use configuration of Figure 3.
  • the first limb 28 is pulled away from the central limb 26 and the second limb 30 is also pulled away from the central limb 26.
  • the spacing elements 40 and 50 are connected to the first and second limbs 28, 30 respectively by hinged webs 54, 56 respectively.
  • the first spacing element 40 can be folded into the space between the central limb 26 and first limb 28 and, using the web 56, the second spacing element 50 can be folded into the space between central limb 26 and second limb 30.
  • the T-shaped element 50 provides an edge to which the ends of the first limb 28, second limb 30, first spacing element 40 and second spacing element 50 can be adhered. This avoids the necessity for dressing off the back edge of the cushion with a separate border of foam.
  • Figures 3-5 can be used as a reversible cushion. If a non-reversible cushion is required, only two limbs and a single spacer portion would be needed. In effect half of the cushion of the Figure 3-5 embodiment could be used.
  • a foam cushion 60 comprising a body 62.
  • the material of the body 62 is substantially similar to that of the first and second embodiments of the present invention, described in relation to Figures 1 and 2, and Figures 3-5 of the drawings that follow.
  • the body 62 comprises a central limb 64 on one side of which is a first limb 66 and on the other side of which is a second limb 68.
  • first spacing element 78 which is generally rectangular in cross section.
  • a second spacing element 88 which is generally rectangular in cross-section.
  • the central limb 64 and first limb 66 are spaced apart by first spacing element 78.
  • the central limb 64 and second limb 68 are spaced apart by second spacing element 88.
  • a T-shaped element 90 At either end of the central limb 64, there is provided a T-shaped element 90, the arms 92 of which extend over the ends of the first and second limbs 66, 68 respectively and over the ends of the first and second spacing elements 78, 88 respectively. The ends of the limbs 66, 68 and spacing elements 78, 88 are adhered to the arms 92 of the T-shaped element 90.
  • the proud portions 70 of the central limb 64 are substantially aligned with the recessed portions 76 of the first limb 66 and vice versa.
  • the proud portions 80 of the central limb 64 are substantially aligned with the recessed portions 86 of the second limb 68 and vice versa.
  • the cushion 60 can readily be incorporated into a seat or mattress.
  • the inclusion of the cavities (produced by recesses 72, 76, 82 and 86) in the cushion 60 have substantially the same effect as in relation to the first and second embodiments.
  • the post production configuration of the cushion 60 can be seen.
  • the line of cut used to produce the body 62 is shown. It is noted that in the case of this third embodiment there is substantially no waste from the cushion 60 when cut from a rectangular block. It can be cut using a single continuous cutting action.
  • the body 62 is transferred from its post production configuration of Figure 7 to its in use configuration of Figure 6 by stripping out and reversing the positions of the first limb 66 and first spacing element 78, and by doing the same with the second limb 68 and second spacing element 88.
  • the ends of the limbs 66, 68 and spacing elements 78, 88 are glued to the arms 92 as explained above.
  • the fourth embodiment can be regarded as a simplified version of the second embodiment of the present invention described in relation to Figures 3 to 5. For that reason only a brief description of the fourth embodiment will be given here.
  • Figure 8 a foam cushion 100 comprising a body 102 formed from a polyurethane foam material having elastomeric resilient properties.
  • the body 102 is shaped, in cross-section, for use as a cushion.
  • the body 102 comprises a central limb 104 on one side of which is a first castellated limb 106, and on the other side of which is a second castellated limb 108.
  • Proud portion of the first castellated limb 106 lie over recessed portions of the first castellated spacing element 110.
  • proud portions of the second castellated limb 108 lie under recessed portions of the second spacing element 112. This configuration provides, in use, the desired resilience for a comfortable cushion.
  • first and second castellated limbs 104, 108 respectively and the first and second castellated spacing elements 110, 112 respectively are adhered to a T-shaped end piece 114 of the central limb 104.
  • the fourth embodiment does not require the wedge shaped spacing element 40 of the second embodiment.
  • the fifth embodiment is, essentially, a one-sided version of the fourth embodiment of the present invention described in relation to Figures 8 and 9, and for convenience corresponding reference numerals have been used for like parts. It will be appreciated in this case that the limb 104 is not central, but serves the same purpose as for the fourth embodiment. Further, end piece 114 is not T-shaped and depends from first limb 106 as shown.
  • the fifth embodiment is manufactured as one side of the fourth embodiment.
  • fourth and fifth embodiments can be produced from one body by a single cut.
  • the third embodiment of the present invention can be used with a single set of facing castellations if a non-reversible cushion is desired, as for the second embodiment.
  • the proud and recessed portions need not be produced by castellations. Instead they could be produced by any non-linear cut in the foam, which is preferably repeating. For instance, a zig zag pattern, producing V-shaped cut out portions could be used.

Landscapes

  • Mattresses And Other Support Structures For Chairs And Beds (AREA)
EP96301203A 1995-02-28 1996-02-22 Schaumstoffkissen Withdrawn EP0734669A1 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB9503999 1995-02-28
GBGB9503999.6A GB9503999D0 (en) 1995-02-28 1995-02-28 Foam cushion
GB9508183 1995-04-21
GBGB9508183.2A GB9508183D0 (en) 1995-02-28 1995-04-21 Foam cushion

Publications (1)

Publication Number Publication Date
EP0734669A1 true EP0734669A1 (de) 1996-10-02

Family

ID=26306594

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96301203A Withdrawn EP0734669A1 (de) 1995-02-28 1996-02-22 Schaumstoffkissen

Country Status (2)

Country Link
EP (1) EP0734669A1 (de)
NO (1) NO960788L (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2731907A1 (de) * 2011-07-14 2014-05-21 Proprietect L.P. Schaumstoffsitzelement sowie verfahren und form zu seiner herstellung
WO2023224856A1 (en) * 2022-05-16 2023-11-23 Ziwi LLC Foam cushions having an orthogonal alternating structure

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3066928A (en) * 1958-10-28 1962-12-04 Reeves Bros Inc Resilient cushion structure
US5172439A (en) * 1991-06-10 1992-12-22 Farley David L Therapeutic mattress overlay and method of forming and using the same
DE9400215U1 (de) * 1993-01-08 1994-03-17 Auping Bv Stützmittel, wie eine Schaummatratze

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3066928A (en) * 1958-10-28 1962-12-04 Reeves Bros Inc Resilient cushion structure
US5172439A (en) * 1991-06-10 1992-12-22 Farley David L Therapeutic mattress overlay and method of forming and using the same
DE9400215U1 (de) * 1993-01-08 1994-03-17 Auping Bv Stützmittel, wie eine Schaummatratze

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2731907A1 (de) * 2011-07-14 2014-05-21 Proprietect L.P. Schaumstoffsitzelement sowie verfahren und form zu seiner herstellung
CN103842284A (zh) * 2011-07-14 2014-06-04 普罗普里特公司 泡沫座椅元件及其生产方法和模具
EP2731907A4 (de) * 2011-07-14 2015-03-11 Proprietect Lp Schaumstoffsitzelement sowie verfahren und form zu seiner herstellung
EP3473591A1 (de) * 2011-07-14 2019-04-24 Proprietect L.P. Schaumstoffsitzelement sowie verfahren und form zur herstellung davon
WO2023224856A1 (en) * 2022-05-16 2023-11-23 Ziwi LLC Foam cushions having an orthogonal alternating structure

Also Published As

Publication number Publication date
NO960788D0 (no) 1996-02-27
NO960788L (no) 1996-08-29

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