US2158929A - Resilient sheet - Google Patents
Resilient sheet Download PDFInfo
- Publication number
- US2158929A US2158929A US142630A US14263037A US2158929A US 2158929 A US2158929 A US 2158929A US 142630 A US142630 A US 142630A US 14263037 A US14263037 A US 14263037A US 2158929 A US2158929 A US 2158929A
- Authority
- US
- United States
- Prior art keywords
- sheet
- bridges
- corrugations
- perforations
- resilient
- 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
Links
Images
Classifications
-
- 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
- A47C7/16—Seats made of wooden, plastics, or metal sheet material; Panel seats
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12361—All metal or with adjacent metals having aperture or cut
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
- Y10T428/1241—Nonplanar uniform thickness or nonlinear uniform diameter [e.g., L-shape]
- Y10T428/12417—Intersecting corrugating or dimples not in a single line [e.g., waffle form, etc.]
Definitions
- My invention relates to resilient sheets and has particular reference to perforated and corrugated sheets made of a resilient material.
- the object of my invention is to provide a sheet 6 having high resiliency and substantial elongation in all directions combined with suflicient strength to withstand transverse loads, so that it can be used as a material for making seats and backs of chairs and similar furniture or as a foundation for 10 upholstering in place of ordinary springs.
- metal sheets of high resiliency such as carbon or alloy steel, bronze etc.
- perforated so as to produce a mesh-like structure, the perforations resulting in the formation of a plurality of interconnecting bridges, and these bridges are then corrugated so as to form them into stretchable springs.
- the sheet when perforated and formed, can-be heat treated to increase its resiliency if made of carbon steel.
- Another object of my invention is to provide a 40 resilient sheet which can be prepared of large sheets of metal as described above, these sheets being then cut and trimmed to suit various practical applications.
- Another object of my invention is to provide a I resilient sheet formed with a plurality of corrugated spring-like portions extending in various directions, the corrugations projecting to one side of the sheet, leaving the other side smooth so as to provide a smooth front side for the chair seats 50 and backs, or for other similar applications where the surface must be smooth.
- the smooth surface may be then covered by someflexible inelastic protective material.
- Another object of my invention is to provide a method of making resilient sheets, consisting in perforating a sheet so as to form a plurality of interconnected bridges, and corrugating the bridges into spring-like resilient members.
- Fig. 1 is a front view of my resilient sheet.
- Fig. 2 is a sectional view of the same.
- Fig. 3 is a front view of a modified resilient sheet.
- Fig. 4 is a sectional view of the same.
- Fig. 5 is a front view of another modification.
- Fig. 6 is a sectional view of the same.
- Fig. 7 is a front view of a resilient sheet made to form a chair seat.
- Fig. 8 is a sectional view of the same.
- Fig. 9 is a diagrammatic view of my resilient sheet deflected under a load.
- My resilient sheet consists of a sheet of metal I,
- . preferably carbon steel which can be heat treated to a spring temper, or an alloy which can be made resilient by cold rolling and stamping or forming operations. It is provided with a plurality of perforations 2, the material between the perforations forming bridges 3 extending at right angles to each other. Portions 4 of the sheet of metal interconnecting the bridges may be provided with holes 5 which may be used for attaching the sheet to supporting frames or for attaching covering and upholstering materials to the sheet.
- the bridges are folded or corrugated as shown so that every so bridge forms a spring which can expand under load, returning to the original shape when the load is removed.
- the corrugations act as small individual springs imparting a certain elasticity to the whole sheet in all directions.
- the result is that the sheet defiects under a load as if made of a very elastic substance, as shown in Fig. 9 where an elastic sheet 1 is fastened to a frame 8 and is deflected by a load 9 at different points.
- the curve of de- 0 flection will vary considerably for an irregular distribution of load as every individual spring will become deflected in accordance with its load.
- My sheet therefore can replace mattress and bed foundations made of individual helical springs at a considerably reduced cost and with increased reliability.
- the use of a single integral sheet eliminates a large number of joints necessary with a helical spring assembly thereby also eliminating points of friction and wear, these points of friction being often a cause of annoying squeaks.
- the sheets can be made in standard sizes and trimmed to suit particular applications, the holes 5 being then used for attaching the sheet to its supporting frame and also for attaching fabric and covers.
- the front side of the sheet is made smooth by keeping the corrugations 6 below its front surface as shown in Fig. 1.
- FIG. 3 and 4' A modified structure is shown in Figs. 3 and 4' with hexagonal perforations III which may be elongated in one direction so as to obtain a greater resiliency in one direction.
- FIG. 5 and 6 Another modification is shown in Figs. 5 and 6.
- holes II are provided at the points of inter-. section of corrugations l2, the sheet being of a somewhat greater rigidity and strength than the sheet shown in Figs. 3 and4. It has a smoother and more uniform surface suitable for certain applications where a flat metal surface may be required without any covering by a fabric, as in metal chairs, for instance.
- FIGs. 7 and 8 depicting a sheet l3 made as a seat for a chair and provided with holes ll at its edges for fastening these edges to the frame of the chair.
- the perforations l5 are made of different sizes in order to adjust the resiliency .of the corrugations 6 and, partly, for ornamental purposes, if the sheet is left uncovered by any upholstering.
- My resilient sheets are especially suitable for ofllce and outdoor furniture where it is desired to have all-metal furniture with sufficiently soft or resilient seats and backs; also for hospitals etc. where the furniture must be sanitary and can be washed and sterilized.
- An expansive sheet having a plurality of portions connected by bridges with perforations between the bridges, every portion being connected by the bridges with at least three other portions, the bridges having corrugations directionally extending in a. substantially transverse direction, the corrugations being interrupted by the perforations.
- a resiliently expansive sheet formed integrally with portions connected by bridges with perforations between the bridges, the bridges having substantially transverse corrugations for rendering them longitudinally expansive, the cormgations being interrupted by said perforationsg every portion being connected by bridges with at 5 least three other portions.
- a resiliently expansive sheet formed inte-i grally with portions connected by bridges with perforations between the bridges, the bridges having substantially transverse corrugations for 1D rendering them longitudinally expansive, the corrugations being interrupted by said perforations, the portions being provided with supplementary perforations.
- a resiliently expansive sheet made of perfo- 15 rated sheet material, the perforations being distributed so as to leave a pattern of portions interconnected upon their outsides by bridges, the bridges being folded in substantially transverse directions, the ridges of the folds being interrupted by the perforations.
- a sheet made resiliently expansive indifferent directions by folding it into a plurality of 30 groups of corrugations, the corrugations of one group directionally intersecting the corrugations of other groups, the corrugations at the points of intersection being interrupted by perforations.
- a resiliently expansive perforated sheet hav-
Landscapes
- Mattresses And Other Support Structures For Chairs And Beds (AREA)
Description
May 16, 1939. L A. DUNAJEFF RESILIENT SHEET Filad lay 14, 1937 lE'O/V/D A. DUNA J'EFF INVENTOR F fla'am/ ATTORNEY Patented May 16, 1939 PATENT orrlcs RESILIENT SHEET Leonid A. Dunajeif, New York, N. Y., assignor to Commercial Ingredients Corporation, New York,
N. Y., as trustee Application May 14, 1937, Serial No. 142,630 '1 Claims. (01. 29-180) My invention relates to resilient sheets and has particular reference to perforated and corrugated sheets made of a resilient material.
The object of my invention is to provide a sheet 6 having high resiliency and substantial elongation in all directions combined with suflicient strength to withstand transverse loads, so that it can be used as a material for making seats and backs of chairs and similar furniture or as a foundation for 10 upholstering in place of ordinary springs. For this purpose I use metal sheets of high resiliency, such as carbon or alloy steel, bronze etc., perforated so as to produce a mesh-like structure, the perforations resulting in the formation of a plurality of interconnecting bridges, and these bridges are then corrugated so as to form them into stretchable springs. The sheet, when perforated and formed, can-be heat treated to increase its resiliency if made of carbon steel. With .9 other metals and alloys the resiliency can be imparted by the cold working of the metal. My sheet, in order to be expansive or stretchable in all directions, must have corrugated bridges separated by perforations between elements which are connected by the bridges, and the perforations must extend across the bridges. It is evident that any longitudinal corrugations. will not make the bridges expansive lengthwise. The corrugations, however, need not extend at right angles to the axis of the bridge. They may extend even at an angle, provided that they cross the bridge, 1. e., begin and end in the perforations, so as to render the bridge expansive lengthwise. In the following description therefore the term I transverse" or substantially transverse" horrugations will include all such corrugations as cross the bridges and end in the perforations or are interrupted by perforations.
Another object of my invention is to provide a 40 resilient sheet which can be prepared of large sheets of metal as described above, these sheets being then cut and trimmed to suit various practical applications.
Another object of my invention is to provide a I resilient sheet formed with a plurality of corrugated spring-like portions extending in various directions, the corrugations projecting to one side of the sheet, leaving the other side smooth so as to provide a smooth front side for the chair seats 50 and backs, or for other similar applications where the surface must be smooth. The smooth surface may be then covered by someflexible inelastic protective material.
Another object of my invention is to provide a method of making resilient sheets, consisting in perforating a sheet so as to form a plurality of interconnected bridges, and corrugating the bridges into spring-like resilient members.
My invention is more fully explained in the accompanying specification and drawing in which:
Fig. 1 is a front view of my resilient sheet.
Fig. 2 is a sectional view of the same.
Fig. 3 is a front view of a modified resilient sheet.
Fig. 4 is a sectional view of the same.
Fig. 5 is a front view of another modification.
Fig. 6 is a sectional view of the same.
Fig. 7 is a front view of a resilient sheet made to form a chair seat.
Fig. 8 is a sectional view of the same.
Fig. 9 is a diagrammatic view of my resilient sheet deflected under a load.
My resilient sheet consists of a sheet of metal I,
.preferably carbon steel which can be heat treated to a spring temper, or an alloy which can be made resilient by cold rolling and stamping or forming operations. It is provided with a plurality of perforations 2, the material between the perforations forming bridges 3 extending at right angles to each other. Portions 4 of the sheet of metal interconnecting the bridges may be provided with holes 5 which may be used for attaching the sheet to supporting frames or for attaching covering and upholstering materials to the sheet. The bridges are folded or corrugated as shown so that every so bridge forms a spring which can expand under load, returning to the original shape when the load is removed.
The corrugations act as small individual springs imparting a certain elasticity to the whole sheet in all directions. The result is that the sheet defiects under a load as if made of a very elastic substance, as shown in Fig. 9 where an elastic sheet 1 is fastened to a frame 8 and is deflected by a load 9 at different points. The curve of de- 0 flection, of course, will vary considerably for an irregular distribution of load as every individual spring will become deflected in accordance with its load. My sheet therefore can replace mattress and bed foundations made of individual helical springs at a considerably reduced cost and with increased reliability. The use of a single integral sheet eliminates a large number of joints necessary with a helical spring assembly thereby also eliminating points of friction and wear, these points of friction being often a cause of annoying squeaks. The sheets can be made in standard sizes and trimmed to suit particular applications, the holes 5 being then used for attaching the sheet to its supporting frame and also for attaching fabric and covers. The front side of the sheet is made smooth by keeping the corrugations 6 below its front surface as shown in Fig. 1.
A modified structure is shown in Figs. 3 and 4' with hexagonal perforations III which may be elongated in one direction so as to obtain a greater resiliency in one direction.
Another modification is shown in Figs. 5 and 6. Here holes II are provided at the points of inter-. section of corrugations l2, the sheet being of a somewhat greater rigidity and strength than the sheet shown in Figs. 3 and4. It has a smoother and more uniform surface suitable for certain applications where a flat metal surface may be required without any covering by a fabric, as in metal chairs, for instance.
Another modification is shown in Figs. 7 and 8 depicting a sheet l3 made as a seat for a chair and provided with holes ll at its edges for fastening these edges to the frame of the chair. The perforations l5 are made of different sizes in order to adjust the resiliency .of the corrugations 6 and, partly, for ornamental purposes, if the sheet is left uncovered by any upholstering.
My resilient sheets are especially suitable for ofllce and outdoor furniture where it is desired to have all-metal furniture with sufficiently soft or resilient seats and backs; also for hospitals etc. where the furniture must be sanitary and can be washed and sterilized.
I claim as my invention:
1. An expansive sheet having a plurality of portions connected by bridges with perforations between the bridges, every portion being connected by the bridges with at least three other portions, the bridges having corrugations directionally extending in a. substantially transverse direction, the corrugations being interrupted by the perforations.
2. A resiliently expansive sheet formed integrally with portions connected by bridges with perforations between the bridges, the bridges having substantially transverse corrugations for rendering them longitudinally expansive, the cormgations being interrupted by said perforationsg every portion being connected by bridges with at 5 least three other portions.
3. A resiliently expansive sheet formed inte-i grally with portions connected by bridges with perforations between the bridges, the bridges having substantially transverse corrugations for 1D rendering them longitudinally expansive, the corrugations being interrupted by said perforations, the portions being provided with supplementary perforations.
4. A resiliently expansive sheet made of perfo- 15 rated sheet material, the perforations being distributed so as to leave a pattern of portions interconnected upon their outsides by bridges, the bridges being folded in substantially transverse directions, the ridges of the folds being interrupted by the perforations.
5. A sheet made laterally expansive by folding it into a plurality of groups of corrugations forming rows, the corrugations of one group of rows extending in generally parallel directions but in- 25 tersecting the corrugations of the other groups of rows, the corrugations at the points of intersection being interrupted by perforations.
6. "A sheet made resiliently expansive indifferent directions by folding it into a plurality of 30 groups of corrugations, the corrugations of one group directionally intersecting the corrugations of other groups, the corrugations at the points of intersection being interrupted by perforations.
'7. A resiliently expansive perforated sheet hav-
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US142630A US2158929A (en) | 1937-05-14 | 1937-05-14 | Resilient sheet |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US142630A US2158929A (en) | 1937-05-14 | 1937-05-14 | Resilient sheet |
Publications (1)
Publication Number | Publication Date |
---|---|
US2158929A true US2158929A (en) | 1939-05-16 |
Family
ID=22500651
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US142630A Expired - Lifetime US2158929A (en) | 1937-05-14 | 1937-05-14 | Resilient sheet |
Country Status (1)
Country | Link |
---|---|
US (1) | US2158929A (en) |
Cited By (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2871556A (en) * | 1955-02-28 | 1959-02-03 | Bugbee & Niles Company | Method of making mesh fabric |
USB421975I5 (en) * | 1973-12-05 | 1976-03-02 | ||
US5366782A (en) * | 1992-08-25 | 1994-11-22 | The Procter & Gamble Company | Polymeric web having deformed sections which provide a substantially increased elasticity to the web |
US5554145A (en) * | 1994-02-28 | 1996-09-10 | The Procter & Gamble Company | Absorbent article with multiple zone structural elastic-like film web extensible waist feature |
US5650214A (en) * | 1996-05-31 | 1997-07-22 | The Procter & Gamble Company | Web materials exhibiting elastic-like behavior and soft, cloth-like texture |
US5691035A (en) * | 1993-08-03 | 1997-11-25 | The Procter & Gamble Company | Web materials exhibiting elastic-like behavior |
US5876391A (en) * | 1993-11-19 | 1999-03-02 | The Procter & Gamble Company | Absorbent article with structural elastic-like film web waist belt |
US5891544A (en) * | 1993-08-03 | 1999-04-06 | The Procter & Gamble Company | Web materials exhibiting elastic-like behavior |
US5916663A (en) * | 1993-08-03 | 1999-06-29 | Chappell; Charles W. | Web materials exhibiting elastic-like behavior |
US5993432A (en) * | 1995-12-04 | 1999-11-30 | The Procter & Gamble Company | Web materials having elastic-like and expansive zones |
US6316121B1 (en) * | 1997-12-12 | 2001-11-13 | Emitec Gesellschaft Fuer Emissionstechnologie Mbh | Metal foil with through openings and honeycomb body |
US20060141279A1 (en) * | 2002-11-12 | 2006-06-29 | Stork Prints B.V. | Screen material manufacturing method and applications thereof |
WO2008000413A1 (en) * | 2006-06-26 | 2008-01-03 | Mwh-Metallwerk | Punched, perforated sheet |
US20120153702A1 (en) * | 2010-12-21 | 2012-06-21 | Tachi-S Co., Ltd. | Seat cushion of vehicle seat |
US20150044429A1 (en) * | 2013-08-12 | 2015-02-12 | Keter Plastic Ltd. | Support panel |
USD862902S1 (en) * | 2017-09-15 | 2019-10-15 | Breathablebaby, Llc | Fabric material having a pattern resembling mesh |
USD862905S1 (en) * | 2017-09-15 | 2019-10-15 | BreahableBaby, LLC | Fabric material having a pattern resembling mesh |
USD881587S1 (en) * | 2017-09-15 | 2020-04-21 | Breathablebaby, Llc | Fabric material having a pattern resembling mesh |
US11214034B2 (en) | 2014-03-28 | 2022-01-04 | The Glad Products Company | Seals for stretchable films |
-
1937
- 1937-05-14 US US142630A patent/US2158929A/en not_active Expired - Lifetime
Cited By (32)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2871556A (en) * | 1955-02-28 | 1959-02-03 | Bugbee & Niles Company | Method of making mesh fabric |
USB421975I5 (en) * | 1973-12-05 | 1976-03-02 | ||
US3994693A (en) * | 1973-12-05 | 1976-11-30 | Lockheed Missiles & Space Company, Inc. | Expandable metal membrane |
US5366782A (en) * | 1992-08-25 | 1994-11-22 | The Procter & Gamble Company | Polymeric web having deformed sections which provide a substantially increased elasticity to the web |
US6027483A (en) * | 1993-08-03 | 2000-02-22 | Chappell; Charles W. | Web materials exhibiting elastic-like behavior |
US5691035A (en) * | 1993-08-03 | 1997-11-25 | The Procter & Gamble Company | Web materials exhibiting elastic-like behavior |
US5723087A (en) * | 1993-08-03 | 1998-03-03 | The Procter & Gamble Company | Web materials exhibiting elastic-like behavior |
US5916663A (en) * | 1993-08-03 | 1999-06-29 | Chappell; Charles W. | Web materials exhibiting elastic-like behavior |
US5891544A (en) * | 1993-08-03 | 1999-04-06 | The Procter & Gamble Company | Web materials exhibiting elastic-like behavior |
US5904673A (en) * | 1993-11-19 | 1999-05-18 | The Procter & Gamble Company | Absorbent article with structural elastic-like film web waist belt |
US5876391A (en) * | 1993-11-19 | 1999-03-02 | The Procter & Gamble Company | Absorbent article with structural elastic-like film web waist belt |
US5749866A (en) * | 1994-02-28 | 1998-05-12 | The Procter & Gamble Company | Absorbent article with multiple zone structural elastic-like film web extensible waist feature |
US5947948A (en) * | 1994-02-28 | 1999-09-07 | The Procter & Gamble Company | Absorbent article with multiple zone structural elastic-like film web extensible leg flap panels |
US7527615B2 (en) | 1994-02-28 | 2009-05-05 | The Procter & Gamble Company | Structural elastic-like nonwoven web |
US5554145A (en) * | 1994-02-28 | 1996-09-10 | The Procter & Gamble Company | Absorbent article with multiple zone structural elastic-like film web extensible waist feature |
US6325787B1 (en) | 1994-02-28 | 2001-12-04 | The Procter & Gamble Company | Absorbent article with multiple zone structural elastic-like film web extensible waist feature |
US6706028B2 (en) | 1994-02-28 | 2004-03-16 | The Procter & Gamble Company | Absorbent article with multiple zone structural elastic-like film web extensible waist feature |
US20040224132A1 (en) * | 1994-02-28 | 2004-11-11 | Roe Donald Carroll | Absorbent article with multiple zone structural elastic-like film web extensible waist feature |
US5993432A (en) * | 1995-12-04 | 1999-11-30 | The Procter & Gamble Company | Web materials having elastic-like and expansive zones |
US5650214A (en) * | 1996-05-31 | 1997-07-22 | The Procter & Gamble Company | Web materials exhibiting elastic-like behavior and soft, cloth-like texture |
US6316121B1 (en) * | 1997-12-12 | 2001-11-13 | Emitec Gesellschaft Fuer Emissionstechnologie Mbh | Metal foil with through openings and honeycomb body |
US7449248B2 (en) * | 2002-11-12 | 2008-11-11 | Stork Prints B.V. | Screen material manufacturing method and applications thereof |
US20060141279A1 (en) * | 2002-11-12 | 2006-06-29 | Stork Prints B.V. | Screen material manufacturing method and applications thereof |
WO2008000413A1 (en) * | 2006-06-26 | 2008-01-03 | Mwh-Metallwerk | Punched, perforated sheet |
US20120153702A1 (en) * | 2010-12-21 | 2012-06-21 | Tachi-S Co., Ltd. | Seat cushion of vehicle seat |
US8678505B2 (en) * | 2010-12-21 | 2014-03-25 | Tachi-S Co., Ltd. | Seat cushion of vehicle seat |
US20150044429A1 (en) * | 2013-08-12 | 2015-02-12 | Keter Plastic Ltd. | Support panel |
US9533457B2 (en) * | 2013-08-12 | 2017-01-03 | Keter Plastic Ltd. | Support panel |
US11214034B2 (en) | 2014-03-28 | 2022-01-04 | The Glad Products Company | Seals for stretchable films |
USD862902S1 (en) * | 2017-09-15 | 2019-10-15 | Breathablebaby, Llc | Fabric material having a pattern resembling mesh |
USD862905S1 (en) * | 2017-09-15 | 2019-10-15 | BreahableBaby, LLC | Fabric material having a pattern resembling mesh |
USD881587S1 (en) * | 2017-09-15 | 2020-04-21 | Breathablebaby, Llc | Fabric material having a pattern resembling mesh |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US2158929A (en) | Resilient sheet | |
US2678685A (en) | Flat spring and structure | |
EP1362534B1 (en) | Support by spring mat | |
US2127710A (en) | Furniture construction | |
DE2308032A1 (en) | UPHOLSTERED SEAT | |
US2214136A (en) | Spring construction | |
US4158899A (en) | Seat | |
US2124655A (en) | Wire spring and spring structure for cushioned seats and backs | |
USRE21263E (en) | Spring and method of making the | |
US2192573A (en) | Resilient sheet | |
US2122979A (en) | Spring assembly for upholstery | |
US3051966A (en) | Cushioned seat ventilator | |
US2578958A (en) | Spring strip | |
DE3424942A1 (en) | Mattress | |
US3262739A (en) | Ventilating cushion | |
US2635258A (en) | Bed spring marginal rim and connections | |
US3612505A (en) | Spring assembly | |
US2666477A (en) | Zigzag spring seat back having alternate springs of different lengths and form | |
US1964296A (en) | Spring bed bottom | |
DE2603519A1 (en) | Spring core for mattress or furniture cushion - with slat grid, spring bars underneath and textile material on top | |
DE672752C (en) | Spring grid for seat cushion or the like. | |
DE582076C (en) | Collapsible bed | |
US2968340A (en) | Expanded metal spring structure and seat | |
US1117789A (en) | Spring-bed. | |
DE1916968U (en) | SUSPENSION FOR CHAIR AND CAR SEATS AS WELL AS BEDS AND UPHOLSTERED FURNITURE OF ALL TYPES. |