EP0228350A2 - Items composed of a steel frame with steel springs, behaving as elastic support, for the manufacturing of mattresses and cushions - Google Patents

Items composed of a steel frame with steel springs, behaving as elastic support, for the manufacturing of mattresses and cushions Download PDF

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Publication number
EP0228350A2
EP0228350A2 EP86830337A EP86830337A EP0228350A2 EP 0228350 A2 EP0228350 A2 EP 0228350A2 EP 86830337 A EP86830337 A EP 86830337A EP 86830337 A EP86830337 A EP 86830337A EP 0228350 A2 EP0228350 A2 EP 0228350A2
Authority
EP
European Patent Office
Prior art keywords
springs
behaving
steel
mattresses
frame
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Withdrawn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
EP86830337A
Other languages
German (de)
French (fr)
Other versions
EP0228350A3 (en
Inventor
Mario De Martino
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.)
MARTINO MARIO DE
Original Assignee
MARTINO MARIO DE
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 MARTINO MARIO DE filed Critical MARTINO MARIO DE
Publication of EP0228350A2 publication Critical patent/EP0228350A2/en
Publication of EP0228350A3 publication Critical patent/EP0228350A3/en
Withdrawn legal-status Critical Current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
    • A47C27/15—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas with foamed material inlays consisting of two or more layers
    • 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 invention regards items composed of a steel frame with steel springs, behaving as elastic support, for the manufacturing of mattresses and cushions with the peculiarity that the frame and the springs are completely embedded in a polyurethane foam.
  • Mattresses and cushions are essentially of two kinds: the first, exclusively made of synthetic foam with density, quality and elasticity depending on the use they are intended for, in which the foamed polymer acts also as carrying structure; the second one is made of a metallic frame with internal steel springs; in a variable quantity, acting as elastic support. In the second case, and sometimes also in the first one, the whole frame is subsequently covered with one or more layers of padding materials (e.g. wool, cotton, polyurethane foam).
  • padding materials e.g. wool, cotton, polyurethane foam.
  • Polyurethane foam is used as thermal insulator and stuffing material for the covering of the upper and lower surfaces only of spring mattresses. Sometimes polyurethane foam is also used as covering of side surfaces to improve lateral stuffing and as elastic support of external covering. This technique concerns the mounting of previously preformed parts on the steel frame; these parts, however, do not belong to the mattress structure.
  • This invention regards the construction of a spring mattress or spring cushions (e.g. divans, arm-chairs, saddlery for motor vehicles, etc.) with the pecularity that the frame and the springs are completely embedded in a polymeric foam, e.g. polyurethane; the polymer is foamed inside the frame which is placed in a special mould.
  • a spring mattress or spring cushions e.g. divans, arm-chairs, saddlery for motor vehicles, etc.
  • Items obtained according to the invention are characterized by uniform elasticity on the whole exposed surface and especially on the edges. Items obtained according to the invention are characterized by a good comfort together with good orthopaedic quality; in fact they show uniform stiffness and elasticity on the whole exposed surface avoiding the formation of subsidences, which can be found in traditional mattress, in correspondence with the intervals between springs belonging to the frame. These subsidences are not found in items obtained according to the invention, because the springs are completely embedded in the polymeric foam and so non axial deformation is not allowed under stress.
  • Another advantage deriving from embedding frame and springs in a polymeric resin is the fact that the presence of a polymeric foam in interstices between springs and frame, completely eliminates squeaking caused by metallic parts under stress.
  • the invention is here showed in details in fig.1, which represents a possible construction of an item according to the invention.
  • steel springs 2 are hooked to steel frame 1; the whole structure is completely embedded in a polyurethanic foam 3.
  • Items, according to the invention can be obtained by placing the frame with innersprings in an adjustable mould in which a polyurethane resin is polymerized and foamed under controlled process conditions in order to obtain a polymeric foam with the desired apparent density in relation to each application (range of apparent density: 15-60 kg/cubic meter).

Abstract

Items composed of a steel frame 1 with steel springs 2, behaving as elastic support, for manufacturing of mattresses and cushions with the peculiarity that the frame and the springs are completely embedded in a flexible polyurethane foam 3. The polymeric resin is polymerized and foamed directly in the structure placed in a special mould under controlled process conditions in order to obtain a polymeric foam with desired apparent density in relation to the applications. Eventually external coverings 4 in natural or synthetic material, can be added behaving as cover and/or padding.

Description

  • The invention regards items composed of a steel frame with steel springs, behaving as elastic support, for the manufacturing of mattresses and cushions with the peculiarity that the frame and the springs are completely embedded in a polyurethane foam.
  • Mattresses and cushions are essentially of two kinds: the first, exclusively made of synthetic foam with density, quality and elasticity depending on the use they are intended for, in which the foamed polymer acts also as carrying structure; the second one is made of a metallic frame with internal steel springs; in a variable quantity, acting as elastic support. In the second case, and sometimes also in the first one, the whole frame is subsequently covered with one or more layers of padding materials (e.g. wool, cotton, polyurethane foam). Up to now, the manufacturing of an orthopaedic mattress has been obtained by increasing the number of springs per unit area and/or increasing the diameter of the wire of which the spring is made, in order to achieve greater stiffness. It often happens that in this way it is not possible to achieve satisfying results from both the sanitary and the economic points of view, causing also higher weights and manufacturing costs. Polyurethane foam is used as thermal insulator and stuffing material for the covering of the upper and lower surfaces only of spring mattresses. Sometimes polyurethane foam is also used as covering of side surfaces to improve lateral stuffing and as elastic support of external covering. This technique concerns the mounting of previously preformed parts on the steel frame; these parts, however, do not belong to the mattress structure.
  • This invention regards the construction of a spring mattress or spring cushions (e.g. divans, arm-chairs, saddlery for motor vehicles, etc.) with the pecularity that the frame and the springs are completely embedded in a polymeric foam, e.g. polyurethane; the polymer is foamed inside the frame which is placed in a special mould.
  • Items obtained according to the invention are characterized by uniform elasticity on the whole exposed surface and especially on the edges. Items obtained according to the invention are characterized by a good comfort together with good orthopaedic quality; in fact they show uniform stiffness and elasticity on the whole exposed surface avoiding the formation of subsidences, which can be found in traditional mattress, in correspondence with the intervals between springs belonging to the frame. These subsidences are not found in items obtained according to the invention, because the springs are completely embedded in the polymeric foam and so non axial deformation is not allowed under stress. Another advantage deriving from embedding frame and springs in a polymeric resin, is the fact that the presence of a polymeric foam in interstices between springs and frame, completely eliminates squeaking caused by metallic parts under stress. It is also possible to achieve the waterproofing of one or more surfaces of items obtained according to the invention, as a non restrictive example, by depositing, for instance by spraying, or forming a suitable impermeable layer on the exposed surface or on a part of it. Items obtained according to the invention are therefore characterized by a longer life mantaining their properties as a consequence of the previously mentioned features.
  • The invention is here showed in details in fig.1, which represents a possible construction of an item according to the invention. In fig.1 steel springs 2 are hooked to steel frame 1; the whole structure is completely embedded in a polyurethanic foam 3. Eventually external coverings 4, in natural or synthetic material, can be added to behave as a cover and/or stuffing. Items, according to the invention, can be obtained by placing the frame with innersprings in an adjustable mould in which a polyurethane resin is polymerized and foamed under controlled process conditions in order to obtain a polymeric foam with the desired apparent density in relation to each application (range of apparent density: 15-60 kg/cubic meter).

Claims (6)

1. Items composed of a steel frame with steel springs, behaving as elastic support, for the manufacturing of mattresses and cushions with the peculiarity that the frame and the springs are completely embedded in polyurethane foam which is polymerized and foamed in the structure placed in a mould.
2. Items according to claim 1 in which one or more surfaces can be waterproofed by depositing or forming a suitable impermeable layer on the exposed surface or on a part of it.
3. Items according to one or more of the preceding claims in which the polymeric resin is made self-estinguishing.
4. Items according to one or more of the preceding claims in which springs are in a variable quantity and made in any dimension and shape.
5. Items according to one or more of the preceding claims in which external coverings in natural or synthetic material can be added, behaving as cover and/or stuffing.
6. Items according to one or more of the preceding claims for the construction of springs mattresses, divans, arm-chairs, saddlery for motor vehicles.
EP86830337A 1985-12-30 1986-11-10 Items composed of a steel frame with steel springs, behaving as elastic support, for the manufacturing of mattresses and cushions Withdrawn EP0228350A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT8540443A IT8540443A0 (en) 1985-12-30 1985-12-30 STEEL SPRING MATTRESS IN WHICH THE FRAME AND THE SPRINGS THEMSELVES ARE COMPLETELY DROWNED IN EXPANDED POLYURETHANE FOAM
IT4044385 1985-12-30

Publications (2)

Publication Number Publication Date
EP0228350A2 true EP0228350A2 (en) 1987-07-08
EP0228350A3 EP0228350A3 (en) 1988-01-27

Family

ID=11249744

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86830337A Withdrawn EP0228350A3 (en) 1985-12-30 1986-11-10 Items composed of a steel frame with steel springs, behaving as elastic support, for the manufacturing of mattresses and cushions

Country Status (2)

Country Link
EP (1) EP0228350A3 (en)
IT (1) IT8540443A0 (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2140305A1 (en) * 1997-05-28 2000-02-16 Betere Fab Lucia Antonio Improvements to upholstered elements of foaming material
US6425153B1 (en) * 1998-01-21 2002-07-30 James B. Reswick Support cushion
US7740321B2 (en) 2006-05-12 2010-06-22 Herman Miller, Inc. Suspended pixelated seating structure
US7931257B2 (en) 2003-10-23 2011-04-26 Herman Miller, Inc. Multilayer load bearing structure
US8128175B2 (en) 2008-06-04 2012-03-06 Herman Miller, Inc. Suspension seating
US8469454B2 (en) 2007-01-29 2013-06-25 Herman Miller, Inc. Back construction
US8691370B2 (en) 2008-07-25 2014-04-08 Herman Miller, Inc. Multi-layered support structure
WO2014105037A1 (en) * 2012-12-28 2014-07-03 Tempur-Pedic Management, Llc Mattress assembly
US8895109B2 (en) * 2011-10-04 2014-11-25 Leon Blanga Cohen Coated springs and mattress made thereof
WO2015038019A3 (en) * 2013-09-16 2015-05-07 Sebastian ŁABANOWICZ A process for producing foam mattresses with embedded spring and mattress produced by this method
WO2015088798A1 (en) * 2013-12-11 2015-06-18 Tempur-Pedic Management, Llc Mattress assembly

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2398237A (en) * 1944-01-28 1946-04-09 Marsack Patents Corp Mattress
US2994890A (en) * 1956-11-08 1961-08-08 Dayco Corp Spring reinforced mattresses
FR85189E (en) * 1964-02-04 1965-06-25 Spring frames for mattresses and upholstery, for cushions and for vehicle seats
US3393012A (en) * 1966-10-19 1968-07-16 Chancellor Chair Company Seat cushion
FR2319471A1 (en) * 1975-08-01 1977-02-25 Plasse Robert PROCESS FOR MAKING A MATTRESS WITH COATED SPRINGS, TOOLS USED AND MATTRESS OBTAINED
DE3140340A1 (en) * 1981-10-10 1983-04-28 Metzeler Schaum Gmbh, 8940 Memmingen Flameproofed mattress

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2398237A (en) * 1944-01-28 1946-04-09 Marsack Patents Corp Mattress
US2994890A (en) * 1956-11-08 1961-08-08 Dayco Corp Spring reinforced mattresses
FR85189E (en) * 1964-02-04 1965-06-25 Spring frames for mattresses and upholstery, for cushions and for vehicle seats
US3393012A (en) * 1966-10-19 1968-07-16 Chancellor Chair Company Seat cushion
FR2319471A1 (en) * 1975-08-01 1977-02-25 Plasse Robert PROCESS FOR MAKING A MATTRESS WITH COATED SPRINGS, TOOLS USED AND MATTRESS OBTAINED
DE3140340A1 (en) * 1981-10-10 1983-04-28 Metzeler Schaum Gmbh, 8940 Memmingen Flameproofed mattress

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2140305A1 (en) * 1997-05-28 2000-02-16 Betere Fab Lucia Antonio Improvements to upholstered elements of foaming material
US6425153B1 (en) * 1998-01-21 2002-07-30 James B. Reswick Support cushion
US7931257B2 (en) 2003-10-23 2011-04-26 Herman Miller, Inc. Multilayer load bearing structure
US7740321B2 (en) 2006-05-12 2010-06-22 Herman Miller, Inc. Suspended pixelated seating structure
US8186761B2 (en) 2006-05-12 2012-05-29 Herman Miller, Inc. Suspended pixelated seating structure
US8469454B2 (en) 2007-01-29 2013-06-25 Herman Miller, Inc. Back construction
US8128175B2 (en) 2008-06-04 2012-03-06 Herman Miller, Inc. Suspension seating
US8691370B2 (en) 2008-07-25 2014-04-08 Herman Miller, Inc. Multi-layered support structure
US9629467B2 (en) 2008-07-25 2017-04-25 Herman Miller, Inc. Method for manufacturing a multi-layered support structure
US9060616B2 (en) * 2011-10-04 2015-06-23 León Blanga Cohen Coated springs and mattress made thereof
US8895109B2 (en) * 2011-10-04 2014-11-25 Leon Blanga Cohen Coated springs and mattress made thereof
WO2014105037A1 (en) * 2012-12-28 2014-07-03 Tempur-Pedic Management, Llc Mattress assembly
US9848711B2 (en) 2012-12-28 2017-12-26 Tempur-Pedic Management, Llc Mattress assembly
WO2015038019A3 (en) * 2013-09-16 2015-05-07 Sebastian ŁABANOWICZ A process for producing foam mattresses with embedded spring and mattress produced by this method
WO2015088798A1 (en) * 2013-12-11 2015-06-18 Tempur-Pedic Management, Llc Mattress assembly
US9332857B2 (en) 2013-12-11 2016-05-10 Tempur-Pedic Management, Llc Mattress assembly

Also Published As

Publication number Publication date
EP0228350A3 (en) 1988-01-27
IT8540443A0 (en) 1985-12-30

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