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Publication numberUS3319274 A
Publication typeGrant
Publication dateMay 16, 1967
Filing dateJan 25, 1965
Priority dateJan 25, 1965
Publication numberUS 3319274 A, US 3319274A, US-A-3319274, US3319274 A, US3319274A
InventorsRaymond R Upton
Original AssigneeRaymond R Upton
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Mattress with sag-resistant insert
US 3319274 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

May 16, 1967 R. R. UPTON 3,319,274

MATTRESS WITH SAG-RESISTANT INSERT Filed Jan. 25, 1965 INVENTOR RAYMOND R. UPTON ATTORNEY United States Patent 3,319,274 MATTRESS WITH SAG-RESISTANT INSERT Raymond R. Upton, Rte. 1, Toccoa, Ga. 30577 Filed Jan. 25, 1965, Ser. No. 427,645 7 Claims. (Cl. -345) This invention relates to mattress constructions.

More particularly, the invention is concerned with novel and simplified means to prevent a mattress from sagging longitudinally or in the direction of the spine while simultaneously allowing freedom of flexing of the mattress transversely or at right angles to the spine.

One of the advantages of mattresses constructed according to the invention is that they are lightweight and may readily be rolled up transversely into a compact roll.

An object of the invention is to utilize a thin section or panel of corrugated metal or the like for producing a mattress which will not sag appreciably in the longitudinal direction during use, therefore being a great aid to users who have back difiiculties.

Another object is to provide a mattress stiffening or reinforcing element which is particularly adapted to be used with or incorporated in the construction of an all foam rubber mattress, but which may also be placed beneath any type of mattress or between a mattress and a box spring unit.

Another object is to provide a non-sag insert for mattresses which will also serve as a spring to a certain extent.

Another object is to provide means of the above-mentioned character which aid in rendering the mattress sanitary and resistant to drafts or wind.

Other objects and advantages of the invention will be apparent during the course of the following detailed description.

In the accompanying drawings forming a part of this application and in which like numerals are employed to designate like parts throughout the same.

FIGURE 1 is a perspective view of a mattress embodying the invention, partly broken away;

FIGURE 2 is an enlarged fragmentary transverse vertical section through the mattress, taken on line 22 of FIGURE 1;

FIGURE 3 is a fragmentary perspective View of a stiffening insert or panel;

FIGURE 4 is an end elevation of a rolled-up mattress on a reduced scale; and

FIGURE 5 is a fragmentary transverse vertical section similar to FIGURE 2 through a modified mattress construction according to the invention.

In the drawings wherein for the purpose of illustration are shown preferred embodiments of the invention, attention is directed first to FIGURES 1 through 4, in which the numeral designates a mattress or cushion in its entirety, comprising upper and lower slabs 11 and 12 of foam rubber or like soft resilient material. The two slabs 11 and 12 are preferably of equal thickness, as shown, although in some instances the thicknesses may vary.

Disposed between the foam rubber slabs 11 and 12 and approximately coextensive therewith is a thin corrugated stiff sheet material stiffening insert or panel 13, preferably formed of thin gage aluminum or like sheet metal. The stiifening panel 13 has a multiplicity of equidistantly spaced parallel corrugations 14 extending lengthwise thereof for the entire longitudinal dimension of the mattress. The corrugations may be about one inch deep and spaced apart about two inches on centers, although these dimensions are not critical and may be varied.

Preferably, although not necessarily, the corrugations and the intervening valleys of the panel 13 have flattened faces 15, FIGURE 2, in order to provide adequate surface areas for bonding with the opposed faces 16 of the mattress slabs 11 and 12. Preferably, the two slabs 11 and 12 are cemented to the flat faces 15 of the corrugated panel. To further improve the bonding between the slabs 11 and 12 and the stiffening panel 13, the latter may be embossed over its entire surface as indicated at 17 in FIGURE 3. This is an optional feature which may be dispensed with when desired.

The mattress 10 constructed in the described manner will not bend or sag readily in the lengthwise direction along the corrugations 1-4 or in the direction of the spine of a person or persons on the mattress. However, the corrugated panel 13 allows the mattress to flex and yield readily in the transverse direction to such an extent that an entire double-size mattress can be rolled up manually into a tight roll, only about fifteen inches in diameter as depicted in FIGURE 4. The mattress 10 is therefore very supple in the transverse direction while quite rigid longitudinally and this satisfies the main objective of the invention.

FIGURE 5 shows a modification, wherein the mattress 18 has a fabric envelope 19 which maintains the foam rubber slabs 20 and 21 assembled with an intervening stiffening panel 22, without the necessity for cementing or bonding. This arrangement also allows ready removal or replacement of one or more of the mattress elements when required. The panel 22 in FIGURE 5 may be identical to the described panel 13. The slabs 20 and 21 may, if preferred, be premolded to provide longitudinal ribs 23 thereon to interfit with the corrugations of the panel 22. If desired, the slabs 20 and 21 may be formed with flat faces similar to the slabs 11 and 12.

It is to be understood that the forms of the invention herewith shown and described are to be taken as preferred examples of the same, and that various changes in the shape, size and arrangement of parts may be resorted to, without departing from the spirit of the invention or scope of the subjoined claims.

Having thus described my invention, I claim:

1. A mattress comprising upper and lower slabs of foamed elastomer, said slabs being of approximately the same size, and an intervening corrugated stiifening insert between said slabs having corrugations which extend lengthwise of the slabs so as to stiffen the mattress structure against longitudinal sagging while enabling it to be readily rolled up transversely into a compact generally cylindrical roll.

2. The invention as defined by claim 1, and wherein said slabs and corrugated stiffening insert are adhesively bonded together in superposed relation to form a unit.

3. The invention as defined by claim 2, and wherein said slabs have opposed substantially flat faces and said insert includes flat surface portions on the peaks and valleys of said corrugations for bonding with said slabs.

4. The invention as defined by claim 1, and wherein said slabs and insert are separately formed elements, and an envelope surrounding and enclosing the slabs and 3 insert to maintain these elements in assembled relationship.

5. The invention as defined by claim 1, and wherein the opposed surfaces of the upper and lower slabs are corrugated to interfit with and conform to the corrugations of said stiffening insert.

6. The invention as defined by claim 1, and wherein the corrugated stiffening insert comprises a sheet of relatively thin gage metal.

7. The invention as defined by claim 6, and wherein the sheet metal insert is embossed over substantially its References Cited by the Examiner UNITED STATES PATENTS 12/1940 Church 5361 12/1965 Scheermesser 5-361 FRANK B. SHERRY, Primary Examiner.

10 A. M. CALVERT, Assistant Examiner.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US2225858 *Nov 9, 1939Dec 24, 1940Dunlop Tire & Rubber CorpMattress supporting structure
US3222697 *Jun 29, 1956Dec 14, 1965Mobay Chemical CorpProfiled polyurethane foam articles of manufacture
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3612607 *Jul 18, 1969Oct 12, 1971Allied Chemicals CorpPlastic foam seat construction
US3716875 *May 13, 1970Feb 20, 1973Trust AThree-dimensional upholstery element
US3766577 *May 15, 1972Oct 23, 1973J StewartConvertible sofa-bed without integral support structure
US4143435 *Aug 3, 1977Mar 13, 1979Isamu MasudaMattress having a corrugated plate
US4265484 *May 10, 1979May 5, 1981The Goodyear Tire & Rubber CompanyReinforced foamed body support member
US4365371 *Apr 18, 1980Dec 28, 1982Boussaroque Bertrand JMattresses with stiffeners
US4476594 *Dec 6, 1982Oct 16, 1984Mcleod Arlis DCushion assembly
US4975996 *Oct 3, 1989Dec 11, 1990Evans Alan GMattress
US5172436 *Mar 26, 1990Dec 22, 1992Nihonkenkozoshinkenkyukai Co., Ltd.Mattress cushion
US5412821 *Nov 18, 1991May 9, 1995Span-America Medical Systems, Inc.Pressure relief support system for a mattress
US5819349 *Apr 29, 1996Oct 13, 1998Schwartz; JackMattress
US6223369Nov 13, 1998May 1, 2001Span-America Medical Systems, Inc.Patient support surfaces
US6308354Dec 3, 1999Oct 30, 2001Serta, Inc.Upholstery pad with steel reinforced support
US6618883Jan 30, 2002Sep 16, 2003Clair A. AnglandMattress support device for a sofa sleeper
US6637072Sep 17, 2001Oct 28, 2003Formway Furniture LimitedCastored base for an office chair
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US6817667Sep 17, 2001Nov 16, 2004Formway Furniture LimitedReclinable chair
US6840582May 7, 2003Jan 11, 2005Formway Furniture LimitedHeight adjustable arm assembly
US6848138Dec 29, 1999Feb 1, 2005Edmund K. MaierPatient support surfaces
US6874852Sep 17, 2001Apr 5, 2005Formway Furniture LimitedLumbar support
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US6910741Jan 29, 2003Jun 28, 2005Formway Furniture LimitedLumbar support
US7293311 *Mar 4, 2004Nov 13, 2007Spring Air West, L.L.C.Method of making a multilayered mattress component
US7426762 *Mar 25, 2003Sep 23, 2008Cecilia DazziPillow suitable for women's body
US7441839Mar 28, 2006Oct 28, 2008Formway Furniture LimitedReclinable chair
US7574762 *Oct 27, 2005Aug 18, 2009Baker Daniel JMultilayered mattress component
US7798573Sep 5, 2008Sep 21, 2010Formway Furniture LimitedReclinable chair
US8800978 *Nov 12, 2008Aug 12, 2014Taexpa, S.L.System for manufacturing pressure or impact receiving bodies designed to achieve directable cushioning
US8815038Mar 4, 2009Aug 26, 2014The Boeing CompanyJoining curved composite sandwich panels
US8834667Oct 19, 2010Sep 16, 2014The Boeing CompanyMethod for joining sandwich truss core panels and composite structures produced therefrom
US20100264571 *Nov 12, 2008Oct 21, 2010Taexpa, S.L.System for manufacturing pressure or impact receiving bodies designed to achieve directable cushioning
US20110300343 *Aug 16, 2011Dec 8, 2011The Boeing CompanyComposite Truss Panel Having Fluted Core
USRE32734 *Oct 16, 1986Aug 23, 1988 Reversible mattress
CN101861111BNov 12, 2008Jun 11, 2014泰斯帕有限公司用于制造旨在实现可定向缓冲的压力或冲击承受体的系统
WO1984002260A1 *Dec 6, 1983Jun 21, 1984Mcleod Arlis DelaneReversible mattress
WO1991014387A1 *Mar 26, 1990Oct 3, 1991Nihon Kenkozoshin Kenkyukai KkCushion mat
Classifications
U.S. Classification5/701, 5/722, 428/319.1, 5/948, 428/316.6, 428/182
International ClassificationA47C27/16
Cooperative ClassificationY10S5/948, A47C27/144, A47C27/15, A47C27/16
European ClassificationA47C27/15, A47C27/14C2, A47C27/16