WO2008145185A1 - Tube à ressort et ensemble de ressorts pour matelas à ressort - Google Patents

Tube à ressort et ensemble de ressorts pour matelas à ressort Download PDF

Info

Publication number
WO2008145185A1
WO2008145185A1 PCT/EP2007/055268 EP2007055268W WO2008145185A1 WO 2008145185 A1 WO2008145185 A1 WO 2008145185A1 EP 2007055268 W EP2007055268 W EP 2007055268W WO 2008145185 A1 WO2008145185 A1 WO 2008145185A1
Authority
WO
WIPO (PCT)
Prior art keywords
spring
tube
spring tube
cuts
springs
Prior art date
Application number
PCT/EP2007/055268
Other languages
English (en)
Inventor
Cesare Petrolati
Doriano Rossi
Tom Wells
Original Assignee
Cesare Petrolati
Doriano Rossi
Tom Wells
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 Cesare Petrolati, Doriano Rossi, Tom Wells filed Critical Cesare Petrolati
Priority to US12/601,215 priority Critical patent/US20100180385A1/en
Priority to PCT/EP2007/055268 priority patent/WO2008145185A1/fr
Priority to EP07729681.2A priority patent/EP2150155B1/fr
Publication of WO2008145185A1 publication Critical patent/WO2008145185A1/fr

Links

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
    • A47C27/04—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas with spring inlays
    • A47C27/06—Spring inlays
    • A47C27/063—Spring inlays wrapped or otherwise protected
    • A47C27/064—Pocketed springs

Definitions

  • the invention relates to the technical field concerning the production of spring mattresses.
  • the present invention relates to a spring tube and a spring pack obtained from the spring tube.
  • the spring packs obtained from the spring tube are used to manufacture spring mattresses.
  • the springs use to manufacture spring mattresses are enclosed in a plastic tube, which keep them firmly side by side at a prefixed reciprocal distance. This is obtained by welding the facing parts of the tube walls comprised between adjacent springs to each other, for example by ultrasonic welding, so that each spring is contained in a portion of tube, closed and separated from the adjacent portions.
  • the tube with the springs is cut into pieces to form spring packs having a selected length, and the spring packs are joined, side by side, so as to obtain an assembly formed by longitudinal and transversal rows of springs.
  • the joint between one spring pack and another is obtained, e.g. by a plurality of glue-spots, applied centered with respect to the spring height, in the touching areas between one spring pack and another.
  • the assembly of spring packs has length and width corresponding to the dimensions of the mattress to be manufactured.
  • the tube distributes part of the load to the adjacent springs, while no load is transferred to the springs adjacent in transversal direction, since they belong to different spring packs, joined to each other, as already said, only in the central area.
  • the object of the present invention is to propose a spring tube and a spring pack for mattresses shaped in such a way, as to avoid the above mentioned disadvantage, thus obtaining a homogeneous reaction of the springs independently from the load orientation and distribution.
  • Another object of the present invention is to propose a spring tube and a spring pack obtained by technologies and apparatuses analogous to the ones used for known spring packs, so as to keep the production costs at the same level.
  • a spring tube for spring mattresses including a continuous tube and a plurality of springs enclosed into the tube and arranged side by side, at a selected distance, with facing parts of the tube walls between one spring and a subsequent one, joined by welding lines, so that each spring is contained in a respective portion of said tube, closed and separated from the adjacent portions, with said spring tube characterized in that longitudinal cuts are made along said welding lines starting from at least one side of the spring tube and extending inwards, to form at least one tubular segment for each portion of said portions.
  • Figures 1 a and 1 b show partial, lateral views of the proposed spring tube and spring pack in a first and a second embodiments respectively;
  • Figure 2 is a partial, top view of a spring assembly obtained by a plurality of packs of Figure 1 ;
  • Figures 3a and 3b show section views taken along the section lines Ill-Ill of Figure 2, with an exemplification stress acting on a single spring of the first and second embodiments respectively;
  • Figure 4 is a section view taken along the section line IV-IV of Figure 2, with the stress of a single spring being pointed out.
  • reference numeral 1 indicates the spring tube from which the spring pack for mattresses proposed by the invention is obtained.
  • the spring tube 1 like the known ones, includes a tube 10 of floppy plastic material, within which the springs 2 are enclosed and kept arranged side by side, at a selected distance.
  • the parts of the tube wall between one spring 2 and the subsequent one are joined by welding lines 12, crossing the whole tube side to side, obtained e.g. by ultrasound welding.
  • the welding lines are parallel to the axes A of the springs 2, so that each spring is contained within a closed portion 13 of the tube 10, separated from adjacent portions 13 ( Figure 1 a and 1 b).
  • the welding lines 12 have a width L sufficient to assure the sealing of the portions 13 even after having done longitudinal cuts 120 along a center line of each portion 13.
  • the cuts 120 are made starting from one side only of the tube and extend inwards.
  • the continuity of the tube 10, between one portion 13 and another, is maintained by the central part 12A of the welding line 12, and the remainder of the welding line, extending from the central part up to the side of the tube opposite to the one having the cut.
  • the cuts 120 define in each portion 13 a tubular segment 130 which is separated from the tubular segment 130 of the adjacent portions 13.
  • Each tubular separated segment 130 permits independent axial compression of the relevant spring 2, which do not interfere with the axial extension of the adjacent springs of the same spring pack.
  • the cuts 120 start from both the sides of the tube 10 and extend inwards along the welded portions 13 for a predetermined depth H (see Figure 1 b).
  • the continuity of the tube 10, between one portion 13 and another, is maintained in this case only by the central part 12A of the welding line 12, which is not reached by the cuts 120; according to the shown non-limiting example, the extension of the central part 12A is about one third of the total.
  • the cuts 120 define at both sides of the tube, in each portion 13, two tubular, opposite segments 130, each of which has axial extension as the cuts 120.
  • each portion 13 The tubular segments 130 of each portion 13 are separated from the adjacent ones and permit independent axial compression of the spring 2, which do not interfere with the axial extension of the adjacent springs.
  • this feature is maintained unchanged also after the preparation of an assembly P (partially seen in Figure 2), formed by spring packs S obtained from prefixed lengths of the spring tube 1 , joined side by side to one another, until the length and width dimensions of the mattress to be produced are obtained.
  • Joining one pack S to another is obtained, e.g. by glue-spots C, applied from centered positions, with respect to the spring 2 height, up to the side of the tube without the cuts, for the first embodiment, as can be seen in figure 3a, and only in centered positions with respect to the spring 2 height for the second embodiment, as it can be seen in figure 3b.
  • the glue spots C are applied along the touching areas between one spring pack and another.
  • the first embodiment the one with the cuts 120 along only one side of the tube 1 , permits application of more glue spots C for each portion 13, for example there are three glue spots C visible in figure 3a, thus keeping the assembly joined with more strength.
  • the assembly P comprises longitudinal rows FL and transversal rows FT formed by the springs 2; according to the shown example, the spring packs S are arranged to form the longitudinal rows FL, however the resulting softness is exactly the same both in the longitudinal extension and in the transversal extension.
  • a single spring 2 of each longitudinal row FL, or of transversal row FT can be compressed independently without transferring parts of the load to the adjacent springs, unlike the spring packs of the prior art, mentioned in the introductory note.
  • the assembly P of spring packs S containing the springs 2 is covered with usual coverings (not shown), which form the mattress facings and sides.
  • the advantageous functional aspect of the so obtained mattress lies in the fact that it offers a homogeneous softness, and consequently improved comfort, independently from orientation of the body lying thereon.
  • the proposed spring pack S obtained from the spring tube 1 allows, if desired, to use springs 2 of different elastic reaction to obtain orthopedic mattresses with differentiated softness areas with different softness degrees, as there are no effects due to the spring interconnections caused by the tube 10, which are present instead in the spring packs of known type.
  • the proposed spring tube can be produced with the same technologies and apparatuses already used for known spring tubes, with obvious advantages.
  • the cuts along the welded strips can be easily made in the same welding station or in a subsequent one.
  • the proposed spring tube and spring pack offer important functional advantages, which improve the mattresses characteristics, with practically no cost increase.

Landscapes

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

Abstract

La présente invention concerne un tube à ressort (1) qui contient de façon connue une pluralité de ressorts (2) disposés côte à côte et dont les parties en vis-à-vis de la paroi (13) du tube (10) sont jointes entre un ressort (2) et le ressort postérieur par des lignes de soudure (12) de sorte que chaque ressort (2) se trouve dans une portion (13) de tube (10) fermée et séparée des portions adjacentes (13). Les lignes de soudure (12) ont une largeur (L) minimum prédéterminée et sont coupées sur la partie interne de l'un des côtés du tube de sorte que chacune des portions (13) fermées contenant un ressort (2) peut être comprimée sans conséquence sur les portions (13) adjacentes. Ceci améliore le confort lors de l'utilisation d'un matelas fabriqué avec des ensembles (S) de ressorts groupés obtenus à partir du tube à ressort (1). Selon un deuxième mode de réalisation préféré le tube à ressort (1) est coupé de chaque côté le long des lignes de soudure.
PCT/EP2007/055268 2007-05-30 2007-05-30 Tube à ressort et ensemble de ressorts pour matelas à ressort WO2008145185A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US12/601,215 US20100180385A1 (en) 2007-05-30 2007-05-30 Spring Tube And A Spring Pack For Spring Mattresses
PCT/EP2007/055268 WO2008145185A1 (fr) 2007-05-30 2007-05-30 Tube à ressort et ensemble de ressorts pour matelas à ressort
EP07729681.2A EP2150155B1 (fr) 2007-05-30 2007-05-30 Matelas à ressort

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2007/055268 WO2008145185A1 (fr) 2007-05-30 2007-05-30 Tube à ressort et ensemble de ressorts pour matelas à ressort

Publications (1)

Publication Number Publication Date
WO2008145185A1 true WO2008145185A1 (fr) 2008-12-04

Family

ID=39592851

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2007/055268 WO2008145185A1 (fr) 2007-05-30 2007-05-30 Tube à ressort et ensemble de ressorts pour matelas à ressort

Country Status (3)

Country Link
US (1) US20100180385A1 (fr)
EP (1) EP2150155B1 (fr)
WO (1) WO2008145185A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITBO20080788A1 (it) * 2008-12-30 2010-06-30 Teknomac S R L Complesso di confezioni di molle per materassi
US8978183B1 (en) 2014-01-08 2015-03-17 L&P Property Management Company Pocketed spring assembly
US9332856B2 (en) 2014-06-17 2016-05-10 L&P Property Management Company Pocketed spring assembly comprising strings of springs of different heights and enhanced ventilation
WO2017218241A1 (fr) * 2016-06-08 2017-12-21 Bedgear, Llc Ensemble ressort de suspension indépendant
EP3331404A4 (fr) * 2015-08-03 2019-05-22 Bedgear, LLC Matelas personnalisable

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8857799B2 (en) 2011-05-12 2014-10-14 Sealy Technology, Llc Advanced conformance encased coil spring units
US11076705B2 (en) 2014-05-30 2021-08-03 Sealy Technology, Llc Spring core with integrated cushioning layer
US10010190B2 (en) 2014-06-17 2018-07-03 L&P Property Management Company Pocketed spring assembly
EP3389450B1 (fr) 2015-12-17 2024-03-06 Sealy Technology, LLC Ressort hélicoïdal à réponse de charge variable, et matelas le comprenant
EP3405073B1 (fr) 2016-01-21 2021-03-10 Sealy Technology, LLC Ressorts à hélices imbriquées à réponses en charge non linéaires, et matelas comprenant ceux-ci
JP2017189361A (ja) * 2016-04-13 2017-10-19 株式会社ルービックＪｐ ポケットコイル
JP6490619B2 (ja) * 2016-04-13 2019-03-27 株式会社ルービックＪｐ ポケットコイル及びポケットコイルの製造方法
US10598242B2 (en) 2016-05-20 2020-03-24 Sealy Technology, Llc Coil springs with non-linear loading responses and mattresses including the same
US11013340B2 (en) * 2018-05-23 2021-05-25 L&P Property Management Company Pocketed spring assembly having dimensionally stabilizing substrate
US10617223B2 (en) 2018-06-06 2020-04-14 Steven Bayer Independent spring support structure

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1284384A (en) * 1918-05-15 1918-11-12 William Lewis Spring-mattress.
US2615180A (en) * 1949-05-07 1952-10-28 Simmons Co Spring assembly
WO1992003077A1 (fr) * 1990-08-22 1992-03-05 Schlaraffia-Werke Hüser Gmbh. & Co. Kg. Ressorts en poches pour matelas
EP1410744A1 (fr) * 2002-10-17 2004-04-21 Schramm Werkstätten GMBH Ressorts en poches pour matelas
WO2005102115A1 (fr) * 2004-04-26 2005-11-03 Stjernfjädrar Ab Matelas a ressorts separes

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4895352A (en) * 1989-01-09 1990-01-23 Simmons Company Mattress or cushion spring array
US6029957A (en) * 1994-02-01 2000-02-29 Furniture Row Technologies, Llc Manufacture of pocket spring assemblies
US5868383A (en) * 1997-03-27 1999-02-09 L&P Property Management Company Multiple rate coil spring assembly
US6952850B2 (en) * 2001-11-21 2005-10-11 Denver Mattress Llc No-flip mattress systems and methods
US7284494B2 (en) * 2003-11-10 2007-10-23 Denver Mattress Co., Llc High comfort mattresses having fiberballs

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1284384A (en) * 1918-05-15 1918-11-12 William Lewis Spring-mattress.
US2615180A (en) * 1949-05-07 1952-10-28 Simmons Co Spring assembly
WO1992003077A1 (fr) * 1990-08-22 1992-03-05 Schlaraffia-Werke Hüser Gmbh. & Co. Kg. Ressorts en poches pour matelas
EP1410744A1 (fr) * 2002-10-17 2004-04-21 Schramm Werkstätten GMBH Ressorts en poches pour matelas
WO2005102115A1 (fr) * 2004-04-26 2005-11-03 Stjernfjädrar Ab Matelas a ressorts separes

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITBO20080788A1 (it) * 2008-12-30 2010-06-30 Teknomac S R L Complesso di confezioni di molle per materassi
WO2010076312A1 (fr) * 2008-12-30 2010-07-08 Teknomac S.R.L. Jeu de blocs de ressorts pour matelas
US8978183B1 (en) 2014-01-08 2015-03-17 L&P Property Management Company Pocketed spring assembly
US9332856B2 (en) 2014-06-17 2016-05-10 L&P Property Management Company Pocketed spring assembly comprising strings of springs of different heights and enhanced ventilation
US10010189B2 (en) 2014-06-17 2018-07-03 L&P Property Management Company Pocketed spring assembly comprising strings of springs of different heights and enhanced ventilation
EP3331404A4 (fr) * 2015-08-03 2019-05-22 Bedgear, LLC Matelas personnalisable
WO2017218241A1 (fr) * 2016-06-08 2017-12-21 Bedgear, Llc Ensemble ressort de suspension indépendant
CN109561765A (zh) * 2016-06-08 2019-04-02 百德基尔有限责任公司 独立悬架弹簧组件
US11503919B2 (en) 2016-06-08 2022-11-22 Bedgear, Llc Independent suspension spring assembly

Also Published As

Publication number Publication date
US20100180385A1 (en) 2010-07-22
EP2150155A1 (fr) 2010-02-10
EP2150155B1 (fr) 2014-07-09

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