US3633228A - Spring upholstery assembly - Google Patents

Spring upholstery assembly Download PDF

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Publication number
US3633228A
US3633228A US30890A US3089070A US3633228A US 3633228 A US3633228 A US 3633228A US 30890 A US30890 A US 30890A US 3089070 A US3089070 A US 3089070A US 3633228 A US3633228 A US 3633228A
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United States
Prior art keywords
spring
springs
assembly
web
investment
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.)
Expired - Lifetime
Application number
US30890A
Inventor
Milton Zysman
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FOAMCOIL SERVICES
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FOAMCOIL SERVICES
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Publication date
Priority to CA913815A priority Critical patent/CA913815A/en
Priority to GB2757569A priority patent/GB1314012A/en
Application filed by FOAMCOIL SERVICES filed Critical FOAMCOIL SERVICES
Priority to US30890A priority patent/US3633228A/en
Priority to SE05831/70A priority patent/SE368504B/xx
Priority to ES379574A priority patent/ES379574A1/en
Priority to NL7007648.A priority patent/NL165366C/en
Priority to FR7019382A priority patent/FR2063876A5/fr
Priority to DE19702026464 priority patent/DE2026464C3/en
Priority to DE7031130U priority patent/DE7031130U/en
Priority to IE1407/70A priority patent/IE35153B1/en
Priority to DK560870AA priority patent/DK127367B/en
Priority to NO4221/70A priority patent/NO130560C/no
Priority to IL35604A priority patent/IL35604A/en
Priority to AT1012770A priority patent/AT308316B/en
Priority to CH1733770A priority patent/CH514319A/en
Priority to BE759350D priority patent/BE759350A/en
Priority to FI703205A priority patent/FI49240C/en
Priority to US00185508A priority patent/US3720966A/en
Priority to CA124271A priority patent/CA934888A/en
Priority to SE7113269A priority patent/SE372699B/xx
Priority to GB4910971A priority patent/GB1355530A/en
Priority to ES396481A priority patent/ES396481A2/en
Priority to NL7114951A priority patent/NL7114951A/xx
Priority to FR7139043A priority patent/FR2113407A6/fr
Priority to IT30557/71A priority patent/IT969051B/en
Priority to AU35207/71A priority patent/AU463056B2/en
Priority to DE2154410A priority patent/DE2154410C3/en
Application granted granted Critical
Publication of US3633228A publication Critical patent/US3633228A/en
Priority to JP48077365A priority patent/JPS5113070B1/ja
Priority to JP50077442A priority patent/JPS521348B1/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • A47C7/00—Parts, details, or accessories of chairs or stools
    • A47C7/02—Seat parts
    • A47C7/18—Seat parts having foamed material included in cushioning part
    • A47C7/20—Seat parts having foamed material included in cushioning part with reinforcement in the foam layer
    • 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
    • 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
    • A47C27/20—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
    • B68—SADDLERY; UPHOLSTERY
    • B68G—METHODS, EQUIPMENT, OR MACHINES FOR USE IN UPHOLSTERING; UPHOLSTERY NOT OTHERWISE PROVIDED FOR
    • B68G11/00—Finished upholstery not provided for in other classes
    • B68G11/04—Finished upholstery not provided for in other classes mainly composed of resilient materials, e.g. of foam rubber
    • B68G11/06—Finished upholstery not provided for in other classes mainly composed of resilient materials, e.g. of foam rubber with embedded springs, e.g. bonded

Definitions

  • cu mo FF 6 e n g spring upholstery assembly comprised encapsulated in a shell of flexible foam terconnected by an integral web of b has a thickness less than the axial permitting independent movement d a l d m r m .m w a V.
  • This invention relates to a spring upholstery assembly suitable for use in bedding, chair seats and backs, and like articles of furniture.
  • Prior art spring upholstery assemblies as used, for example, by the bedding industry in the production of mattresses have included interconnected coil spring assemblies wherein adjacent springs have been connected adjacent their ends and/or intermediate thereof by stringers or hog rings and have also included what have become known as pocketed springs.
  • Some pocketed spring assemblies have been characterized in that adjacent springs in the assembly have not usually been connected together at their ends or intermediate thereof by the conventional hog rings but have only been interconnected by interstitching between adjacent fabric pockets within which the individual springs are located.
  • mattresses constructed of a foamed elastomeric material some of which have been provided with metal coil springs totally embedded therein.
  • a pocketed spring assembly generally seeks to provide a structure wherein any one spring, or group of adjacent springs, may be deformed into compression without unduly disturbing adjacent uncompressed springs of the assembly.
  • the inherent spring characteristics may, in fact, be modified by the encapsulating foamed elastomer by selecting a foam of appropriate density.
  • a spring upholstery assembly including a plurality of coil springs located in side-by-side relationship, each of which is encapsulated in a foamed elastomeric material and wherein each spring proper is interconnected to an adjacent spring by the said encapsulating material at positions intermediate the ends of the springs, the said ends, at least, of each spring being free for independent movement relative to the ends of adjacent springs.
  • Each encapsulated spring is preferably of barrel-shaped configuration, the largest diameter parts of which are interconnected to adjacent encapsulated springs and it is also preferred that the interior of each encapsulated spring is cored whereby each spring may be freely compressed without any significant interference from the encapsulating material. Furthermore, it is preferred that the complete encapsulated spring assembly be cast as a unit from a foam plastic material such as flexible urethane.
  • FIG. 1 is a partly sectioned top perspective view of a mattress incorporating the spring upholstery assembly of the invention
  • HO. 2 is a top plan view, partly in section, of a row of encapsulated springs of the instant spring assembly, and
  • FIG. 3 is a side elevation, partly in section, of a part of the instant spring assembly.
  • a spring upholstery assembly in accordance with the invention may take the form of the mattress M illustrated herein in the accompanying drawings wherein the desired resilience and support is primarily imparted to the mattress by a plurality of side-by-side metal coil springs 10, each encapsulated in a resilient elastomeric material 12 forming a pocket P for the spring 10 and the springs being resiliently interconnected together at 14 in such manner as to support one another and whereby each spring 10 may act substantially independently of its immediate neighbors.
  • the elastomeric material 12 which is preferably a flexible foamed urethane, may be of sufficiently low density that, despite the encapsulation of the springs 10, it need not contribute significantly to the actual spring action. That is to say, the inherent characteristics of the springs 10 may be substantially unimpaired by the encapsulating material 12 but, at the same time, since it is expedient that the resilient interconnection 14 is comprised of a web of the encapsulating material integral therewith, it should be realized that the said material must be of sufficient density to maintain the springs 10 in side-by-side relation in their desired upstanding position relative to one another.
  • the springs 10 illustrated herein may be chosen to be heavy-duty springs (as represented at 10a in FIG. 3) whereby the resilience of each pocketed spring is stiffened providing a firmer support as compared with the lighter gauge springs illustrated at 10.
  • each spring acts independently of its neighbors in the general manner of a pocketed spring by virtue of the fact that adjacent springs 10 are only interconnected intermediate their ends as at 14 whereby free independent movement of any one spring relative to another is procured.
  • Such an independent action as aforesaid is obtained, in the embodiment illustrated herein, by encapsulating each spring in a substantially barrel-shaped cored enclosure, the largest diameter part of which is integrally connected to the encapsulating material of the adjacent springs by the aforesaid web connection 14.
  • adjacent pockets P are interconnected only at their central portions by the web 14; there being no further interconnection such as by hog rings or the like between the springs proper 10.
  • the web interconnection 14 has a length which is approximately equal to one-third of the overall axial length of each pocket P. However, should it be desired to vary the overall characteristics of the spring assembly, it may be desired to vary the length of the web 14 between certain limits as illustrated diagrammatically herein in FIG. 3 by full and dotted outline of the web 14. It should also be noted herein that the thickness of the encapsulating material 12 around adjacent springs 10 combined with the barrel-shaped configuration of each pocket P enables the springs proper l0 to be spaced a finite distance apart from one another.
  • Such an arrangement precludes the possibility of adjacent springs from coming into contact with one another under compression whereby the possibility of inadvertent interlocking between adjacent springs 10 is obviated; such an arrangement also contributing in some part to an effective soundproofing of the overall spring assembly.
  • each pocket P is fully cored from one end to the other as will be clearly seen from FIGS. 2 and 3 of the drawings.
  • Such a construction further enables compression of each spring 10 without significant contribution to the spring action from the encapsulating material 12 since said material is able to be compressed outwardly on both sides of the spring convolutions as the spring 10 is compressed and the convolutions brought closer together. Since it is desired that each spring 10 be fully supported by the encapsulating material 12, it is expedient that the said spring 10 in each pocket P be completely invested by the material 12; that is to say, the material should enter between the spring convolutions and fully encapsulate them both radially inwardly and outwardly thereof.
  • the mattress M would normally be completed by the provision of a firm edging and ticking cover and also top and bottom pads between the ends of the pockets P and the cover.
  • the aforesaid firm edging may be cast integrally with the composite spring assembly and formed of a foam material which is of a somewhat higher density than the encapsulating material 12 and consequently more rigid to provide firm edge support to the mattress M.
  • the instant construction being comprised of a plurality of interconnected pockets P, lends itself to the casting of a variable density encapsulating material 12 throughout the spring assembly as a whole since the mould for each pocket P would be of substantially cup-shaped configuration initially retaining the casting material therein without substantial flow to adjacent cup moulds prior to the actual foaming step.
  • a further advantage of the composite spring upholstery assembly according to the instant invention is that, since the only interconnection between adjacent springs 10 is by means of the resilient web connection 14, the assembly as a whole may be flexible greatly facilitating its ready transportation from place to place and also facilitating its storage in a flexed condition such as may be required, for example, in a folding bed assembly.
  • top and/or bottom pads may be provided integral with the spring upholstery assembly; such pads being cast of a similar foamed elastomeric material to the encapsulating material 12.
  • Such integral pads need not detract from the independent spring action contemplated by the invention since the pads may be of an extremely low density foam and readily stretchable so that only localized deformation thereof would occur when any one or a localized group of the pockets P was depressed.
  • a spring upholstery assembly including a plurality of helical upholstery springs assembled in erect side-by-side spaced-apart relation with one another; a resilient web integrally interconnecting said springs and holding them in said assembly, the web thickness being less than the axial heights of the springs whereby portions of said springs project through said web; and resilient investment of the said projecting spring portions merging integrally with said web, said invested projecting spring portions being hollow over at least a part thereof; the resilience of said investment being insufficient to prevent compression of said projecting spring portions independently of one another under normal load but being sufficient nevertheless to restrict deflection thereof out of the erect sideby-side relation aforesaid.
  • each web interconnection 14 may extend continuously through the interior of the encapsulated springs which it joins together. Such an arrangement will provide an opposed pair of hollow interior cavities at the respective ends of each spring without, of course, detracting from the independent characteristics of each spring in the assembly as hereinbefore described.
  • a spring upholstery assembly including:
  • said invested projecting spring ends being hollow over at least a part thereof; the resilience of said investment being insufficient to prevent compression of said projecting spring ends independently of one another under normal load but being sufficient nevertheless to restrict deflection thereof out of the erect side-by-side relation aforesaid under said normal load.
  • each respective spring in the form of a generally cylindrical hollow shell extending axially of at least a part of said spring.
  • said investment extends over the complete axial dimension of each respective spring.
  • said web interconnects the said springs intermediate their ends.
  • each spring has an exterior configuration of generally barrel-shaped form tapering from the ends to a central zone thereof and said web interconnects said central zone, at least, of adjacent springs.
  • said web and investment are formed of a material having a resilience sufficient to modify the inherent characteristics of the springs during compressive movement thereof under load.
  • said material comprising said web and investment is a flexible foam plastic.
  • said web extends continuously through the said assembly of 5 springs providing an opposed pair of hollow interior cavities at the respective ends of each spring.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mattresses And Other Support Structures For Chairs And Beds (AREA)
  • Springs (AREA)

Abstract

A pocket spring upholstery assembly comprised of helical springs each encapsulated in a shell of flexible foam plastic and all mutually interconnected by an integral web of the same material. The web has a thickness less than the axial heights of the springs permitting independent movement between the springs under normal load.

Description

United States Patent [72] Inventor Milton Zysman Toronto, Ontario, Canada Appl. No. 30,890
[ [22] Filed Apr. 22, 1970 [45] Patented Jan. 11, 1972 Primary Examiner-Casmir A. Nunberg Att0rneyLeon Arthurs .n h r mm &S
cu mo FF 6 e n g spring upholstery assembly comprised encapsulated in a shell of flexible foam terconnected by an integral web of b has a thickness less than the axial permitting independent movement d a l d m r m .m w a V. d fl fl mm n .K a .lU cau s Oe o tm A rer .imflmmw TP e dm h ln 0 wam n m ka mw m w m fhMee AoPt-nb 3 0 m SIN/5.1 BWSH Lm 5 2 n u H4 /6 .mn h, Hm HU "7 n Y m m mm n L "W B n M E s n "h S u m m A n n F N u T m m m3 mm u n w m m m m m P m m m U ,m m & s n mm m 8 C R M P L .m S9U h F 1 1 1 4 2 1 0 U 5 U n t PATENTEB JAN] 1:972 3,833,22
INVENTOP MlLTON ZYSMHN ATTORNE SPRING UPHOLSTERY ASSEMBLY This invention relates to a spring upholstery assembly suitable for use in bedding, chair seats and backs, and like articles of furniture.
Prior art spring upholstery assemblies as used, for example, by the bedding industry in the production of mattresses have included interconnected coil spring assemblies wherein adjacent springs have been connected adjacent their ends and/or intermediate thereof by stringers or hog rings and have also included what have become known as pocketed springs. Some pocketed spring assemblies have been characterized in that adjacent springs in the assembly have not usually been connected together at their ends or intermediate thereof by the conventional hog rings but have only been interconnected by interstitching between adjacent fabric pockets within which the individual springs are located. Also known in the prior art are mattresses constructed of a foamed elastomeric material some of which have been provided with metal coil springs totally embedded therein. However, such mattresses comprised of a combination of metal coil springs embedded in a foamed elastomer have not attempted to emulate the various advantages sought by a pocketed spring mattress, which advantages have included attempts to provide an independent spring action as between adjacent springs of the assembly. That is to say, a pocketed spring assembly generally seeks to provide a structure wherein any one spring, or group of adjacent springs, may be deformed into compression without unduly disturbing adjacent uncompressed springs of the assembly.
It is accordingly a broad object of the present invention to provide a spring upholstery assembly having the advantageous characteristics generally sought to be provided by a pocketed spring assembly but which utilizes a foamed elastomeric encapsulation for the springs proper dispensing with the fabric type of pockets of prior art spring assemblies.
It is a further object of the invention to provide such a spring upholstery assembly wherein the foamed elastomeric material serves to support and maintain metal coil springs of the assembly for action independently one of another without significant interference with the inherent spring characteristics. However, it is a related object of the invention to provide such a spring upholstery assembly wherein, if desired, the inherent spring characteristics may, in fact, be modified by the encapsulating foamed elastomer by selecting a foam of appropriate density.
It is a yet further object of the invention to provide a spring upholstery assembly as aforesaid wherein the individual coil springs constituting the assembly may expediently be interconnected only by the material of the encapsulating foamed elastomer intermediate the ends of the springs for procuring an independent spring action as between adjacent springs of the assembly.
In a preferred form of the invention, there is provided a spring upholstery assembly including a plurality of coil springs located in side-by-side relationship, each of which is encapsulated in a foamed elastomeric material and wherein each spring proper is interconnected to an adjacent spring by the said encapsulating material at positions intermediate the ends of the springs, the said ends, at least, of each spring being free for independent movement relative to the ends of adjacent springs.
Each encapsulated spring is preferably of barrel-shaped configuration, the largest diameter parts of which are interconnected to adjacent encapsulated springs and it is also preferred that the interior of each encapsulated spring is cored whereby each spring may be freely compressed without any significant interference from the encapsulating material. Furthermore, it is preferred that the complete encapsulated spring assembly be cast as a unit from a foam plastic material such as flexible urethane.
Other objects of the invention will become apparent from the hereinafter following description of the elements, parts and principles thereof given herein solely by way of example with reference to the accompanying drawings wherein like reference numerals refer to like parts throughout the several views and wherein:
FIG. 1 is a partly sectioned top perspective view of a mattress incorporating the spring upholstery assembly of the invention;
HO. 2 is a top plan view, partly in section, of a row of encapsulated springs of the instant spring assembly, and
FIG. 3 is a side elevation, partly in section, of a part of the instant spring assembly.
A spring upholstery assembly in accordance with the invention may take the form of the mattress M illustrated herein in the accompanying drawings wherein the desired resilience and support is primarily imparted to the mattress by a plurality of side-by-side metal coil springs 10, each encapsulated in a resilient elastomeric material 12 forming a pocket P for the spring 10 and the springs being resiliently interconnected together at 14 in such manner as to support one another and whereby each spring 10 may act substantially independently of its immediate neighbors.
It is worth noting at this juncture that the elastomeric material 12, which is preferably a flexible foamed urethane, may be of sufficiently low density that, despite the encapsulation of the springs 10, it need not contribute significantly to the actual spring action. That is to say, the inherent characteristics of the springs 10 may be substantially unimpaired by the encapsulating material 12 but, at the same time, since it is expedient that the resilient interconnection 14 is comprised of a web of the encapsulating material integral therewith, it should be realized that the said material must be of sufficient density to maintain the springs 10 in side-by-side relation in their desired upstanding position relative to one another.
Of course, the foregoing remarks do not preclude the possibility of selecting a density for the encasing material 12 which is greater or lesser as between different types of spring upholstery assembly so that the encapsulating material 12 can, in fact, have some effect on the spring characteristics, However, despite the foregoing, it may be generally preferred that the encasing material characteristics do not, in fact, contribute significantly to the overall spring action.
Thus, in a spring upholstery assembly, according to the invention, variations in resilience of the individual pocketed springs as between one such assembly and another may conveniently be accomplished by selecting appropriate springs proper. For example, the springs 10 illustrated herein may be chosen to be heavy-duty springs (as represented at 10a in FIG. 3) whereby the resilience of each pocketed spring is stiffened providing a firmer support as compared with the lighter gauge springs illustrated at 10.
As illustrated herein, each spring acts independently of its neighbors in the general manner of a pocketed spring by virtue of the fact that adjacent springs 10 are only interconnected intermediate their ends as at 14 whereby free independent movement of any one spring relative to another is procured. Such an independent action as aforesaid is obtained, in the embodiment illustrated herein, by encapsulating each spring in a substantially barrel-shaped cored enclosure, the largest diameter part of which is integrally connected to the encapsulating material of the adjacent springs by the aforesaid web connection 14. Thus, adjacent pockets P are interconnected only at their central portions by the web 14; there being no further interconnection such as by hog rings or the like between the springs proper 10.
As illustrated in FIG. 3, the web interconnection 14 has a length which is approximately equal to one-third of the overall axial length of each pocket P. However, should it be desired to vary the overall characteristics of the spring assembly, it may be desired to vary the length of the web 14 between certain limits as illustrated diagrammatically herein in FIG. 3 by full and dotted outline of the web 14. It should also be noted herein that the thickness of the encapsulating material 12 around adjacent springs 10 combined with the barrel-shaped configuration of each pocket P enables the springs proper l0 to be spaced a finite distance apart from one another. Such an arrangement precludes the possibility of adjacent springs from coming into contact with one another under compression whereby the possibility of inadvertent interlocking between adjacent springs 10 is obviated; such an arrangement also contributing in some part to an effective soundproofing of the overall spring assembly.
It is preferred that each pocket P is fully cored from one end to the other as will be clearly seen from FIGS. 2 and 3 of the drawings. Such a construction further enables compression of each spring 10 without significant contribution to the spring action from the encapsulating material 12 since said material is able to be compressed outwardly on both sides of the spring convolutions as the spring 10 is compressed and the convolutions brought closer together. Since it is desired that each spring 10 be fully supported by the encapsulating material 12, it is expedient that the said spring 10 in each pocket P be completely invested by the material 12; that is to say, the material should enter between the spring convolutions and fully encapsulate them both radially inwardly and outwardly thereof.
Such investiture of the spring convolutions is conveniently attained by casting the elastomeric material 12 comprising the spring encapsulation and interconnections 14 in situ in a mould which already contains the springs proper 10. Alternatively, interconnected pockets may be cast in a suitable mould and the metal springs 10 then inserted within the cored pockets. However, with utilization of the latter technique, the springs 10 would have to be spirally twisted to reduce their overall diameter before insertion into their respective pockets, subsequent release of the springs enabling them to attain their unstressed condition with consequent radial expansion thereof causing them to press into the interior pocket sides of the cast material effectively to encapsulate the spring convolutions as desired.
It will be appreciated that either of the above techniques enables the spring upholstery assembly to be produced as a single-composite unit or, alternatively, it may be cast in sections for subsequent adhesive interconnection. lt is also worth noting that, since the only interconnection between adjacent pockets P is by the integral web 14, scrap sections of a cast assembly may be cut out and a new section adhesively secured into position thereby reducing the total amount of waste per cast unit.
In the mattress embodiment described and illustrated herein, the mattress M would normally be completed by the provision of a firm edging and ticking cover and also top and bottom pads between the ends of the pockets P and the cover. In this connection, it is contemplated that the aforesaid firm edging may be cast integrally with the composite spring assembly and formed of a foam material which is of a somewhat higher density than the encapsulating material 12 and consequently more rigid to provide firm edge support to the mattress M. Also, in this connection, it may be noted that the instant construction, being comprised of a plurality of interconnected pockets P, lends itself to the casting of a variable density encapsulating material 12 throughout the spring assembly as a whole since the mould for each pocket P would be of substantially cup-shaped configuration initially retaining the casting material therein without substantial flow to adjacent cup moulds prior to the actual foaming step.
A further advantage of the composite spring upholstery assembly according to the instant invention is that, since the only interconnection between adjacent springs 10 is by means of the resilient web connection 14, the assembly as a whole may be flexible greatly facilitating its ready transportation from place to place and also facilitating its storage in a flexed condition such as may be required, for example, in a folding bed assembly.
Also, it is contemplated that top and/or bottom pads may be provided integral with the spring upholstery assembly; such pads being cast of a similar foamed elastomeric material to the encapsulating material 12. Such integral pads need not detract from the independent spring action contemplated by the invention since the pads may be of an extremely low density foam and readily stretchable so that only localized deformation thereof would occur when any one or a localized group of the pockets P was depressed.
Thus there is provided, by the instant invention, a spring upholstery assembly including a plurality of helical upholstery springs assembled in erect side-by-side spaced-apart relation with one another; a resilient web integrally interconnecting said springs and holding them in said assembly, the web thickness being less than the axial heights of the springs whereby portions of said springs project through said web; and resilient investment of the said projecting spring portions merging integrally with said web, said invested projecting spring portions being hollow over at least a part thereof; the resilience of said investment being insufficient to prevent compression of said projecting spring portions independently of one another under normal load but being sufficient nevertheless to restrict deflection thereof out of the erect sideby-side relation aforesaid.
Also, and as illustrated herein by chain-dotted line in FIG. 3, each web interconnection 14 may extend continuously through the interior of the encapsulated springs which it joins together. Such an arrangement will provide an opposed pair of hollow interior cavities at the respective ends of each spring without, of course, detracting from the independent characteristics of each spring in the assembly as hereinbefore described.
lclaim:
l. A spring upholstery assembly including:
a plurality of helical upholstery springs respectively invested in a resilient elastomeric material and assembled in erect side-by-side spaced-apart relation with one another;
a resilient web merging with the investment of said springs integrally interconnecting and holding them in said assembly, the web thickness being less than the axial heights of the springs whereby at least one end of each said spring projects through said web in detached relation to the ends of adjacent springs;
said invested projecting spring ends being hollow over at least a part thereof; the resilience of said investment being insufficient to prevent compression of said projecting spring ends independently of one another under normal load but being sufficient nevertheless to restrict deflection thereof out of the erect side-by-side relation aforesaid under said normal load.
2. A spring upholstery assembly as claimed in claim 1 wherein:
said investment encapsulates each respective spring in the form of a generally cylindrical hollow shell extending axially of at least a part of said spring.
3. A spring upholstery assembly as claimed in claim 2 wherein:
said investment extends over the complete axial dimension of each respective spring.
4. A spring upholstery assembly as claimed in claim 3 wherein:
said web interconnects the said springs intermediate their ends.
5. A spring upholstery assembly as claimed in claim 1 wherein:
said investment on each spring has an exterior configuration of generally barrel-shaped form tapering from the ends to a central zone thereof and said web interconnects said central zone, at least, of adjacent springs.
6. A spring upholstery assembly as claimed in claim 1 wherein:
said web and investment are formed of a material having a resilience sufficient to modify the inherent characteristics of the springs during compressive movement thereof under load.
7. A spring upholstery assembly as claimed in claim 6 wherein:
said material comprising said web and investment is a flexible foam plastic. 8. A spring upholstery assembly as claimed in claim 1 wherein:
said web extends continuously through the said assembly of 5 springs providing an opposed pair of hollow interior cavities at the respective ends of each spring.

Claims (9)

1. A spring upholstery assembly including: a plurality of helical upholstery springs respectively invested in a resilient elastomeric material and assembled in erect side-by-side spaced-apart relation with one another; a resilient web merging with the investment of said springs integrally interconnecting and holding them in said assembly, the web thickness being less than the axial heights of the springs whereby at least one end of each said spring projects through said web in detached relation to the ends of adjacent springs; said invested projecting spring ends being hollow over at least a part thereof; the resilience of said investment being insufficient to prevent compression of said projecting spring ends independently of one another under normal load but being sufficient nevertheless to restrict deflection thereof out of the erect side-by-side relation aforesaid under said normal load.
2. A spring upholstery assembly as claimed in claim 1 wherein: said investment encapsulates each respective spring in the form of a generally cylindrical hollow shell extending axiAlly of at least a part of said spring.
3. A spring upholstery assembly as claimed in claim 2 wherein: said investment extends over the complete axial dimension of each respective spring.
4. A spring upholstery assembly as claimed in claim 3 wherein: said web interconnects the said springs intermediate their ends.
5. A spring upholstery assembly as claimed in claim 1 wherein: said investment on each spring has an exterior configuration of generally barrel-shaped form tapering from the ends to a central zone thereof and said web interconnects said central zone, at least, of adjacent springs.
6. A spring upholstery assembly as claimed in claim 1 wherein: said web and investment are formed of a material having a resilience sufficient to modify the inherent characteristics of the springs during compressive movement thereof under load.
7. A spring upholstery assembly as claimed in claim 6 wherein: said material comprising said web and investment is a flexible foam plastic.
8. A spring upholstery assembly as claimed in claim 1 wherein: said web extends continuously through the said assembly of springs providing an opposed pair of hollow interior cavities at the respective ends of each spring.
9. A spring upholstery assembly as claimed in claim 1 wherein: the interior of each said spring is hollow over its full-axial height and said web interconnects the exterior surfaces of said investment on each said spring.
US30890A 1969-05-30 1970-04-22 Spring upholstery assembly Expired - Lifetime US3633228A (en)

Priority Applications (29)

Application Number Priority Date Filing Date Title
CA913815A CA913815A (en) 1969-05-30 Spring upholstery assembly
GB2757569A GB1314012A (en) 1969-05-30 1969-05-30 Spring upholstery assembly
US30890A US3633228A (en) 1969-05-30 1970-04-22 Spring upholstery assembly
SE05831/70A SE368504B (en) 1969-05-30 1970-04-27
ES379574A ES379574A1 (en) 1969-05-30 1970-05-12 Spring upholstery assembly
NL7007648.A NL165366C (en) 1969-05-30 1970-05-27 SPRING COATING ASSEMBLY.
FR7019382A FR2063876A5 (en) 1969-05-30 1970-05-27
DE19702026464 DE2026464C3 (en) 1969-05-30 1970-05-29 Plate-like upholstery element, in particular a mattress
DE7031130U DE7031130U (en) 1969-05-30 1970-08-19 SPRING PAD ARRANGEMENT.
IE1407/70A IE35153B1 (en) 1969-05-30 1970-11-04 Spring upholstery assembly
DK560870AA DK127367B (en) 1969-05-30 1970-11-04 Spring padding.
NO4221/70A NO130560C (en) 1969-05-30 1970-11-05
IL35604A IL35604A (en) 1969-05-30 1970-11-06 Spring cushioning
AT1012770A AT308316B (en) 1969-05-30 1970-11-10 Spring inserts, in particular for mattresses and upholstered furniture
CH1733770A CH514319A (en) 1969-05-30 1970-11-23 Plastic upholstery cushion - with included wire springs
BE759350D BE759350A (en) 1969-05-30 1970-11-24 SPRING PADDING ASSEMBLY
FI703205A FI49240C (en) 1969-05-30 1970-11-27 Spring pad
US00185508A US3720966A (en) 1970-04-22 1971-10-01 Spring upholstery cushioning
CA124271A CA934888A (en) 1970-04-22 1971-10-04 Spring upholstery cushioning
SE7113269A SE372699B (en) 1970-04-22 1971-10-20
GB4910971A GB1355530A (en) 1970-04-22 1971-10-22 Spring up-holstery cushioning
ES396481A ES396481A2 (en) 1970-04-22 1971-10-28 Spring upholstery cushioning
NL7114951A NL7114951A (en) 1970-04-22 1971-10-29
FR7139043A FR2113407A6 (en) 1970-04-22 1971-10-29
IT30557/71A IT969051B (en) 1970-04-22 1971-10-29 INCORPORATING SPRING PADDING FOR SEAT BEDS AND OTHER CONSIDERABLES
AU35207/71A AU463056B2 (en) 1970-04-22 1971-11-01 Spring upholstery cushioning
DE2154410A DE2154410C3 (en) 1970-04-22 1971-11-02 Plate-like upholstery element
JP48077365A JPS5113070B1 (en) 1969-05-30 1973-07-09
JP50077442A JPS521348B1 (en) 1969-05-30 1975-06-23

Applications Claiming Priority (12)

Application Number Priority Date Filing Date Title
CA913815T
GB2757569 1969-05-30
US30890A US3633228A (en) 1969-05-30 1970-04-22 Spring upholstery assembly
DE7031130U DE7031130U (en) 1969-05-30 1970-08-19 SPRING PAD ARRANGEMENT.
DK560870AA DK127367B (en) 1969-05-30 1970-11-04 Spring padding.
IE1407/70A IE35153B1 (en) 1969-05-30 1970-11-04 Spring upholstery assembly
NO4221/70A NO130560C (en) 1969-05-30 1970-11-05
IL35604A IL35604A (en) 1969-05-30 1970-11-06 Spring cushioning
AT1012770A AT308316B (en) 1969-05-30 1970-11-10 Spring inserts, in particular for mattresses and upholstered furniture
CH1733770A CH514319A (en) 1969-05-30 1970-11-23 Plastic upholstery cushion - with included wire springs
BE759350 1970-11-24
FI703205A FI49240C (en) 1969-05-30 1970-11-27 Spring pad

Publications (1)

Publication Number Publication Date
US3633228A true US3633228A (en) 1972-01-11

Family

ID=42987348

Family Applications (1)

Application Number Title Priority Date Filing Date
US30890A Expired - Lifetime US3633228A (en) 1969-05-30 1970-04-22 Spring upholstery assembly

Country Status (17)

Country Link
US (1) US3633228A (en)
JP (2) JPS5113070B1 (en)
AT (1) AT308316B (en)
BE (1) BE759350A (en)
CA (1) CA913815A (en)
CH (1) CH514319A (en)
DE (1) DE7031130U (en)
DK (1) DK127367B (en)
ES (1) ES379574A1 (en)
FI (1) FI49240C (en)
FR (1) FR2063876A5 (en)
GB (1) GB1314012A (en)
IE (1) IE35153B1 (en)
IL (1) IL35604A (en)
NL (1) NL165366C (en)
NO (1) NO130560C (en)
SE (1) SE368504B (en)

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US5699998A (en) * 1993-02-01 1997-12-23 Zysman; Milton Manufacture of pocket spring assemblies
US5720471A (en) * 1995-06-07 1998-02-24 The Ohio Mattress Company Licensing & Components Group Low profile composite material bedding foundation system and methods of manufacture
US5885407A (en) * 1996-04-29 1999-03-23 Mossbeck; Niels S. Method and apparatus for forming pocket spring coil mattresses
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US6170808B1 (en) * 1997-12-10 2001-01-09 Franz Kutschi Spring core for mattress or cushion
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US20100258988A1 (en) * 2005-09-20 2010-10-14 Sport Helmets, Inc. Embodiments of Lateral Displacement Shock Absorbing Technology and Applications Thereof
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US7865989B2 (en) 2006-05-30 2011-01-11 Metzeler Schaum Gmbh Spring element unit for a padding element, particularly a mattress
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USD679058S1 (en) 2011-07-01 2013-03-26 Intellectual Property Holdings, Llc Helmet liner
USD683079S1 (en) 2011-10-10 2013-05-21 Intellectual Property Holdings, Llc Helmet liner
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US8857799B2 (en) 2011-05-12 2014-10-14 Sealy Technology, Llc Advanced conformance encased coil spring units
US8978183B1 (en) 2014-01-08 2015-03-17 L&P Property Management Company Pocketed spring assembly
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US9314062B2 (en) 2010-10-06 2016-04-19 Cortex Armour Inc. Shock absorbing layer with independent elements, and protective helmet including same
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US3720966A (en) * 1970-04-22 1973-03-20 M Zysman Spring upholstery cushioning
JPS5097200U (en) * 1973-12-29 1975-08-13
US4886256A (en) * 1980-08-05 1989-12-12 Nhk Spring Co., Ltd. Vehicle suspension device with a coil spring embedded in an open cell foam
US4451946A (en) * 1981-11-20 1984-06-05 Simmons U.S.A. Corporation Pocketed spring assembly
US4523344A (en) * 1982-09-17 1985-06-18 Simmons U.S.A. Corporation Independent block assembly of springs
US4895352A (en) * 1989-01-09 1990-01-23 Simmons Company Mattress or cushion spring array
WO1991010387A1 (en) * 1990-01-13 1991-07-25 Hahn Gmbh & Co. Pocket-spring mattress
US5699998A (en) * 1993-02-01 1997-12-23 Zysman; Milton Manufacture of pocket spring assemblies
US5720471A (en) * 1995-06-07 1998-02-24 The Ohio Mattress Company Licensing & Components Group Low profile composite material bedding foundation system and methods of manufacture
US6698166B2 (en) 1995-09-18 2004-03-02 Springquilt Industries Ltd. Pocket spring assembly and methods
US6315275B1 (en) 1995-09-18 2001-11-13 Furniture Row Technologies, Llc Pocket spring assembly and methods
US6467240B2 (en) * 1995-09-18 2002-10-22 Furniture Row Technologies, Llc Pocket spring assembly and methods
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US6159319A (en) * 1996-04-29 2000-12-12 L&P Property Management Company Method and apparatus for forming pocketed coil spring mattresses
US6170808B1 (en) * 1997-12-10 2001-01-09 Franz Kutschi Spring core for mattress or cushion
US6523812B1 (en) * 1998-06-27 2003-02-25 A Harrison (Bedding) Limited Spring units
US6295673B1 (en) 1998-07-24 2001-10-02 L & P Property Management Company Reinforced pocketed spring assembly
US6574811B1 (en) 1998-07-24 2003-06-10 L & P Property Management Company Pocketed spring assembly and associated method
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US8857799B2 (en) 2011-05-12 2014-10-14 Sealy Technology, Llc Advanced conformance encased coil spring units
USD679058S1 (en) 2011-07-01 2013-03-26 Intellectual Property Holdings, Llc Helmet liner
US9516910B2 (en) 2011-07-01 2016-12-13 Intellectual Property Holdings, Llc Helmet impact liner system
USD683079S1 (en) 2011-10-10 2013-05-21 Intellectual Property Holdings, Llc Helmet liner
US9320311B2 (en) 2012-05-02 2016-04-26 Intellectual Property Holdings, Llc Helmet impact liner system
US20140059775A1 (en) * 2012-08-29 2014-03-06 Sarkis Khanzadian Supportive comfort cushion
US9572431B2 (en) * 2012-08-29 2017-02-21 Sarkis Khanzadian Supportive comfort cushion
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US12048380B2 (en) 2014-05-30 2024-07-30 Sealy Technology, Llc Spring core with integrated cushioning layer
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Publication number Publication date
SE368504B (en) 1974-07-08
AT308316B (en) 1973-06-25
NL165366B (en) 1980-11-17
DE2026464B2 (en) 1977-06-08
BE759350A (en) 1971-05-24
DK127367B (en) 1973-10-29
ES379574A1 (en) 1972-10-16
FR2063876A5 (en) 1971-07-09
FI49240C (en) 1975-05-12
IL35604A (en) 1974-05-16
CA913815A (en) 1972-10-31
NO130560C (en) 1975-01-08
JPS521348B1 (en) 1977-01-13
GB1314012A (en) 1973-04-18
NO130560B (en) 1974-09-30
JPS5113070B1 (en) 1976-04-24
IL35604A0 (en) 1971-01-28
DE2026464A1 (en) 1971-02-18
NL7007648A (en) 1970-12-02
CH514319A (en) 1971-10-31
NL165366C (en) 1981-04-15
IE35153B1 (en) 1975-11-26
FI49240B (en) 1975-01-31
DE7031130U (en) 1971-04-29

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