CA2049132A1 - Inner spring mattress with core member and method for construction thereof - Google Patents
Inner spring mattress with core member and method for construction thereofInfo
- Publication number
- CA2049132A1 CA2049132A1 CA 2049132 CA2049132A CA2049132A1 CA 2049132 A1 CA2049132 A1 CA 2049132A1 CA 2049132 CA2049132 CA 2049132 CA 2049132 A CA2049132 A CA 2049132A CA 2049132 A1 CA2049132 A1 CA 2049132A1
- Authority
- CA
- Canada
- Prior art keywords
- mattress
- core members
- inner spring
- spring
- springs
- 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.)
- Abandoned
Links
- 238000000034 method Methods 0.000 title claims abstract description 5
- 238000010276 construction Methods 0.000 title claims description 8
- 239000000463 material Substances 0.000 claims description 8
- 230000006835 compression Effects 0.000 claims description 7
- 238000007906 compression Methods 0.000 claims description 7
- 239000006260 foam Substances 0.000 claims description 4
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 claims description 3
- 210000004705 lumbosacral region Anatomy 0.000 claims description 3
- 239000013536 elastomeric material Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 230000000712 assembly Effects 0.000 description 4
- 238000000429 assembly Methods 0.000 description 4
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 241000905957 Channa melasoma Species 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 229920001821 foam rubber Polymers 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000012858 resilient material Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C27/00—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas
- A47C27/14—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas with foamed material inlays
- A47C27/148—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas with foamed material inlays of different resilience
-
- 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
-
- 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
Landscapes
- Mattresses And Other Support Structures For Chairs And Beds (AREA)
Abstract
ABSTRACT
A mattress, and a method for manufacturing a mattress, having an inner spring assembly with a plurality of interconnected coil springs, and resilient core members located within selected springs to impart different support characteristics to the mattress at the location of the core members.
A mattress, and a method for manufacturing a mattress, having an inner spring assembly with a plurality of interconnected coil springs, and resilient core members located within selected springs to impart different support characteristics to the mattress at the location of the core members.
Description
2 Q ~
FIELD OF THE INVENTION
The present invention relates to the field of mattresses. More particularly, the invention relates to an inner spring mattress that can readily and economically be provided with varied and enhanced support characteristics.
BACKGROUND OF THE INVENTION
Over the years, various developments in mattresses have been directed toward making mattresses more durable, less expensive to construct, or more comfortable. Other developments have been directed toward improving the characteristics of mattresse3. It is recognized, however, that preferences and needs in mattresses are very personal and individual. Because different people have different weights, hei~hts, builds, etc., what is comfortable and correct for one individual is not necessarily comfortable or correct for another.
~hus, mattress manufacturers design and build different types of mattresses with different characteristics that are comfortable, correct, and suitable for different people. This may have required constructing mattresses with different types of inner spring assemblies, such as inner spring assemblies having different numbers of springs, or different sizes of sprin~s, or made with springs of different materials. It can readily be appreciated thatr from ~.
. , ~- - :
-... . . . . ..
-- ., . . . : , -, .: :
-~
:, . .. ., - ~ ~
2~9132 the mattress manufacturer's viewpoint, constructing various different types of mattresses can detract from an efficient and economical manufacturing proces~ and can result in higher production costs.
For example, in the past, if a mattress manu~acturer wanted to produce mattresses having differing characteristics, the manufacturer might have opted to maintain an inventory of different materials, such as different sizes of springs or springs made of different materials. Alternatively, in order to produce mattresses of differing characteristics, a manufacturer may have had to modify the assembly process. For example, one could make inner spring assemblies with a greater or lesser number of springs or rearrange the placement of the springs, in order to make certain models of mattresses with different firmness. T~is multiplicity of materials and construction methods added to the cost of manufacturing a mattress. Accordingly, it would be advantageous to ~0 minimize the variety of materials and construction methods needed to construct mattresses.
In addition to the above concerns, it is also recognized that it would be advantageous to provide a mattress having differing characteristics at different locations on the mattress. For example, because some people often sit on the edge of a mattress while dressing, it would be preferable to make some mattresses with a perimeter area or periphery more suitable for sitting by making it firmer, while the middle portion of the mattress would be less firm because it would be used solely for lying. It may also be preferred to make a central portion of some mattresses firmer to provide more support to a person's . . ~ i . . .
. ~: .: : ~. ... .. .
- : ;. ~ . . ~ .
2~4~132 lumbar region. Although it may be desired to pr~duce mattresses having different areas with firmer support, such as for the reasons described above, in the past, modification of the construction of a mattress to make it firmer in certain regions than in others could be complicated.
Acc~rdingly, it is an object of the present invention to provide a mattress, or similar spring cushion unit, of a construction that can be readily and economically modified during the manufacturing process, so as to provide varying properties or characteristics.
It is another ob~ect of the present invention to provide a mattress that can be manufactured to possess varying support properties with respect to specific, selectable localized regions or areas of the mattress.
It is yet another object of the invention to provide an inner spring assembly ~or a mattress that can provide for differing characteristics.
SUMMARY OF THE INVENTION
According to the present invention, there is provided a mattress, and a method for manufacturing a mattress, having an inner spring assembly with a plurality of interconnected individual spring coils and resilient core members located within selected spring coils of the inner spring assembly ~o impart different support characteristics to the mattress at the location of the core members.
- ~ :
:, ~
. . : :~ :
2~49~32 BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a perspective view of part o~ a mattress made in accordance with the teachings of the present invention, with a partial cutaway portlon;
FI~. 2 is an enlarged perspect~ve view of a single spring unit and core member of the embodiment shown in FI~. l;
FIG. 3 is an elevational view of the spring unit and core member of FIG. 2; and FIG. 4 is a schematic plan of an alternative arrangement springs made in accordance with the teachings of the present invention.
DETAILED DESCRIPTION OF THE EMBODIMENTS
In FIG. 1, there is a portion o~ a mattress 10 with a portion thereof cutaway. The mattress has a first (or top) side 12, a second (or bottom) side 14.
An inner spring assembly 16 is located between one or more layers 17 of padding, foam, netting, mesh, fabric, ticking, coverings, or the like, as is well known in the art. The inner spring assembly 16 is comprised of a plurality of coil springs, e.g. spring 18. The coil springs 18 in the inner spring assembly 1~ are arranged in rows and columns in a regular rectangular pattern.
The inner ~pring assembly 16 shown here is may be comprised of identical springs, although springs of differing characteristics could be used. The springs that make up the inner spring assembly 16 are interconnected by cross-verticals 15 with the springs along the perimeter of the mattress also connected to a border wire 1~ by a border wire helical 21. The coil springs 18 as well as their assembly into an ~ ! . . ' ~
"' .'. . . " ;' ' ' ' ' '' ' , ' ,, ', ,, ' '' ' ' . ~, 2~9~32 innerspring unit are well known in the art, and further detall of the same shall be omitted.
Referring to FIG. 2, there is depicted an individual spring unit 20 that forms part of the inner spring assembly 16 of an embodiment of the present invention. The spring unit 20 includes a spring 18 portion 22 having first end 24 and a second end 26.
The spring 18 may be made for instance of spring wire having a diameter of approximately 0.073 inches wound into a helical shape with an inner diameter of approximately 1.6 inches. Other shapes and materials may be utilized for the spring.
Adapted to cooperate with a selected spring 18 is a core member 28. The core member 28 is a cylinder of resilient material, such as urethane foam, that is positioned inside the convolutions of the coil of the spring 18. In this embodiment, the core member 28 is dimensioned so that its length is slightly less than the length of the spring 18 when the spring unit is fixed in place in the innerspring 16. In an exemplary embodiment, the spring 18 has a height of approximately 5 3/~ inches when installed in the mattress and in an unloaded state, i.e., without a force applied to the mattress top/bottom 12/1~. In the exemplary embodiment, the core member 28 has a length of approximately 5 1/4 inches. ~ith the spring unit and core member of the dimensions described, the mattress characteristics are initially defined solely by the characteristics of the spring member because the spring unit can be compressed slightly, e.g. 1~2 inch, from its length of 5 3/4 inches to a length of 5 1~4 inches before additional compression is opposed by oth the spring unit and the core member. This has the , .
`
2 ~ 3 2 effect that the mattress i9 firmer where the spring units 20 are located.
The diameter of the core member is preferably slightly smaller than the diameter of the intermediate convolutions of the spring 18, so that the coils of the spring can readily move relative to the core member, i.e. to avoid friction between the coils and the core member. In addition, the diameter of the core member is preferably slightly smaller than the diameter of the intermediate conv~lutions of the spring 18 for aase of insertion during the manufacturing process. ~s mentioned above, the inner diameter of the spring portion is approximately 1.6 inches. The diameter of the depicted core member 28 is approximately 1.5 inches.
In a preferred embodiment, the core member 28 is made of urethane foam having a density of 2 pounds per cubic foot and a compression of 12.0 psi at 50%
~eformation. Other densities or compressions may be used to impart different characteristics or properties to spring un~ts 20. In a preferred embodiment, the core member is solid, although it may be hollow in alternative embodiments. Different materials or construction may be used for the core member, ~or example, the core member may be made of foam rubber or resilient plastic or an elastomeric material, or the core member may be a pneumatic or hydraulic device, or may be another spring.
The present invention can be adapted to readily impart different characteristics to different locations o~ the mattress. This is accomplished by selecting springs located at the position in ~he inner spring assembly of the mattress corresponding to the . . - - : :: . , ~` . ?
. :. ` , ~ ` ` :, . ` . .: ', ` -2 ~ 3 2 area at which enhanced firmness is desired. These selected springs can then be readily adapted simply by placing a core member therein to impart greater support, or firmness. If it is preferred to make a mattress with a firm area along the perimeter, the mattress can be manufactured with core members inside each individual spring unit along the perimeter of the inner spring assembly. Alternatively, core members can be positioned only in every other spring unit along the perimeter, or in any other sequence depending on the level of firmness desired. Every other spring (FIG. 1) is presently considered to be the most efficient and economical, however.
In the embodiment of FIG. ~, there is depicted an inner spring assembly 42 in which core members 28 are fitted in selected springs corresponding generally to the lumbar region of a person using the mattress. ~s in this embodiment, the firmness of selected areas can be readil~ varied dlxing the manufacture of a mattress by the number, location, compression, and length of the core members. Thus, in accordance with the present invention, similar or identical inner spring assemblies may be used for constructing various models of mattresses each with different degrees of firmness or with different areas -~`
of firmness. This has the advantage of providing for a variety of choices of mattresses for the consumer, simplifying and reducing the costs associated with manufacturing mattresses of different construction.
In a preferred embodiment the core member ~s located inside the coil spring portion. This facilitates locating the core member and orienting it in a direction to contribute to the firmness of the . ~ . : - . ;
.
.
2 ~ 2 mattress. Other alternative arrangements are possible, however, such as placing the core member around the spring, or along its side. These and all other modifications which are within the ordinary skill in the art to make are considered to lie within the scope of the invention as defined by the appended claims.
FIELD OF THE INVENTION
The present invention relates to the field of mattresses. More particularly, the invention relates to an inner spring mattress that can readily and economically be provided with varied and enhanced support characteristics.
BACKGROUND OF THE INVENTION
Over the years, various developments in mattresses have been directed toward making mattresses more durable, less expensive to construct, or more comfortable. Other developments have been directed toward improving the characteristics of mattresse3. It is recognized, however, that preferences and needs in mattresses are very personal and individual. Because different people have different weights, hei~hts, builds, etc., what is comfortable and correct for one individual is not necessarily comfortable or correct for another.
~hus, mattress manufacturers design and build different types of mattresses with different characteristics that are comfortable, correct, and suitable for different people. This may have required constructing mattresses with different types of inner spring assemblies, such as inner spring assemblies having different numbers of springs, or different sizes of sprin~s, or made with springs of different materials. It can readily be appreciated thatr from ~.
. , ~- - :
-... . . . . ..
-- ., . . . : , -, .: :
-~
:, . .. ., - ~ ~
2~9132 the mattress manufacturer's viewpoint, constructing various different types of mattresses can detract from an efficient and economical manufacturing proces~ and can result in higher production costs.
For example, in the past, if a mattress manu~acturer wanted to produce mattresses having differing characteristics, the manufacturer might have opted to maintain an inventory of different materials, such as different sizes of springs or springs made of different materials. Alternatively, in order to produce mattresses of differing characteristics, a manufacturer may have had to modify the assembly process. For example, one could make inner spring assemblies with a greater or lesser number of springs or rearrange the placement of the springs, in order to make certain models of mattresses with different firmness. T~is multiplicity of materials and construction methods added to the cost of manufacturing a mattress. Accordingly, it would be advantageous to ~0 minimize the variety of materials and construction methods needed to construct mattresses.
In addition to the above concerns, it is also recognized that it would be advantageous to provide a mattress having differing characteristics at different locations on the mattress. For example, because some people often sit on the edge of a mattress while dressing, it would be preferable to make some mattresses with a perimeter area or periphery more suitable for sitting by making it firmer, while the middle portion of the mattress would be less firm because it would be used solely for lying. It may also be preferred to make a central portion of some mattresses firmer to provide more support to a person's . . ~ i . . .
. ~: .: : ~. ... .. .
- : ;. ~ . . ~ .
2~4~132 lumbar region. Although it may be desired to pr~duce mattresses having different areas with firmer support, such as for the reasons described above, in the past, modification of the construction of a mattress to make it firmer in certain regions than in others could be complicated.
Acc~rdingly, it is an object of the present invention to provide a mattress, or similar spring cushion unit, of a construction that can be readily and economically modified during the manufacturing process, so as to provide varying properties or characteristics.
It is another ob~ect of the present invention to provide a mattress that can be manufactured to possess varying support properties with respect to specific, selectable localized regions or areas of the mattress.
It is yet another object of the invention to provide an inner spring assembly ~or a mattress that can provide for differing characteristics.
SUMMARY OF THE INVENTION
According to the present invention, there is provided a mattress, and a method for manufacturing a mattress, having an inner spring assembly with a plurality of interconnected individual spring coils and resilient core members located within selected spring coils of the inner spring assembly ~o impart different support characteristics to the mattress at the location of the core members.
- ~ :
:, ~
. . : :~ :
2~49~32 BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a perspective view of part o~ a mattress made in accordance with the teachings of the present invention, with a partial cutaway portlon;
FI~. 2 is an enlarged perspect~ve view of a single spring unit and core member of the embodiment shown in FI~. l;
FIG. 3 is an elevational view of the spring unit and core member of FIG. 2; and FIG. 4 is a schematic plan of an alternative arrangement springs made in accordance with the teachings of the present invention.
DETAILED DESCRIPTION OF THE EMBODIMENTS
In FIG. 1, there is a portion o~ a mattress 10 with a portion thereof cutaway. The mattress has a first (or top) side 12, a second (or bottom) side 14.
An inner spring assembly 16 is located between one or more layers 17 of padding, foam, netting, mesh, fabric, ticking, coverings, or the like, as is well known in the art. The inner spring assembly 16 is comprised of a plurality of coil springs, e.g. spring 18. The coil springs 18 in the inner spring assembly 1~ are arranged in rows and columns in a regular rectangular pattern.
The inner ~pring assembly 16 shown here is may be comprised of identical springs, although springs of differing characteristics could be used. The springs that make up the inner spring assembly 16 are interconnected by cross-verticals 15 with the springs along the perimeter of the mattress also connected to a border wire 1~ by a border wire helical 21. The coil springs 18 as well as their assembly into an ~ ! . . ' ~
"' .'. . . " ;' ' ' ' ' '' ' , ' ,, ', ,, ' '' ' ' . ~, 2~9~32 innerspring unit are well known in the art, and further detall of the same shall be omitted.
Referring to FIG. 2, there is depicted an individual spring unit 20 that forms part of the inner spring assembly 16 of an embodiment of the present invention. The spring unit 20 includes a spring 18 portion 22 having first end 24 and a second end 26.
The spring 18 may be made for instance of spring wire having a diameter of approximately 0.073 inches wound into a helical shape with an inner diameter of approximately 1.6 inches. Other shapes and materials may be utilized for the spring.
Adapted to cooperate with a selected spring 18 is a core member 28. The core member 28 is a cylinder of resilient material, such as urethane foam, that is positioned inside the convolutions of the coil of the spring 18. In this embodiment, the core member 28 is dimensioned so that its length is slightly less than the length of the spring 18 when the spring unit is fixed in place in the innerspring 16. In an exemplary embodiment, the spring 18 has a height of approximately 5 3/~ inches when installed in the mattress and in an unloaded state, i.e., without a force applied to the mattress top/bottom 12/1~. In the exemplary embodiment, the core member 28 has a length of approximately 5 1/4 inches. ~ith the spring unit and core member of the dimensions described, the mattress characteristics are initially defined solely by the characteristics of the spring member because the spring unit can be compressed slightly, e.g. 1~2 inch, from its length of 5 3/4 inches to a length of 5 1~4 inches before additional compression is opposed by oth the spring unit and the core member. This has the , .
`
2 ~ 3 2 effect that the mattress i9 firmer where the spring units 20 are located.
The diameter of the core member is preferably slightly smaller than the diameter of the intermediate convolutions of the spring 18, so that the coils of the spring can readily move relative to the core member, i.e. to avoid friction between the coils and the core member. In addition, the diameter of the core member is preferably slightly smaller than the diameter of the intermediate conv~lutions of the spring 18 for aase of insertion during the manufacturing process. ~s mentioned above, the inner diameter of the spring portion is approximately 1.6 inches. The diameter of the depicted core member 28 is approximately 1.5 inches.
In a preferred embodiment, the core member 28 is made of urethane foam having a density of 2 pounds per cubic foot and a compression of 12.0 psi at 50%
~eformation. Other densities or compressions may be used to impart different characteristics or properties to spring un~ts 20. In a preferred embodiment, the core member is solid, although it may be hollow in alternative embodiments. Different materials or construction may be used for the core member, ~or example, the core member may be made of foam rubber or resilient plastic or an elastomeric material, or the core member may be a pneumatic or hydraulic device, or may be another spring.
The present invention can be adapted to readily impart different characteristics to different locations o~ the mattress. This is accomplished by selecting springs located at the position in ~he inner spring assembly of the mattress corresponding to the . . - - : :: . , ~` . ?
. :. ` , ~ ` ` :, . ` . .: ', ` -2 ~ 3 2 area at which enhanced firmness is desired. These selected springs can then be readily adapted simply by placing a core member therein to impart greater support, or firmness. If it is preferred to make a mattress with a firm area along the perimeter, the mattress can be manufactured with core members inside each individual spring unit along the perimeter of the inner spring assembly. Alternatively, core members can be positioned only in every other spring unit along the perimeter, or in any other sequence depending on the level of firmness desired. Every other spring (FIG. 1) is presently considered to be the most efficient and economical, however.
In the embodiment of FIG. ~, there is depicted an inner spring assembly 42 in which core members 28 are fitted in selected springs corresponding generally to the lumbar region of a person using the mattress. ~s in this embodiment, the firmness of selected areas can be readil~ varied dlxing the manufacture of a mattress by the number, location, compression, and length of the core members. Thus, in accordance with the present invention, similar or identical inner spring assemblies may be used for constructing various models of mattresses each with different degrees of firmness or with different areas -~`
of firmness. This has the advantage of providing for a variety of choices of mattresses for the consumer, simplifying and reducing the costs associated with manufacturing mattresses of different construction.
In a preferred embodiment the core member ~s located inside the coil spring portion. This facilitates locating the core member and orienting it in a direction to contribute to the firmness of the . ~ . : - . ;
.
.
2 ~ 2 mattress. Other alternative arrangements are possible, however, such as placing the core member around the spring, or along its side. These and all other modifications which are within the ordinary skill in the art to make are considered to lie within the scope of the invention as defined by the appended claims.
Claims (13)
1, An inner spring mattress formed of coil springs with an area of enhanced firmness comprising:
a plurality of resilient core members selectively associated with individual springs of the inner spring assembly, said plurality of core members adapted to additively contribute to the resistance to compression of springs in the area.
a plurality of resilient core members selectively associated with individual springs of the inner spring assembly, said plurality of core members adapted to additively contribute to the resistance to compression of springs in the area.
2. The inner spring mattress of Claim 1 in which each of said plurality of core members is located within the convolutions of its associated spring.
3. The inner spring mattress of Claim l in which each of said plurality of core members is located within and coaxial to an individual spring unit.
4. The inner spring mattress of Claim 1 in which said plurality of core members are made of urethane foam having a density of approximately 2 pounds per cubic foot and a compression of 12.0 psi at 50% deformation.
5. A mattress comprising:
an inner spring assembly having a top side and a bottom side, and a plurality of interconnected individual coil springs;
a plurality of resilient core members located within the convolutions of selected coil springs, and a covering material surrounding said inner spring assembly.
an inner spring assembly having a top side and a bottom side, and a plurality of interconnected individual coil springs;
a plurality of resilient core members located within the convolutions of selected coil springs, and a covering material surrounding said inner spring assembly.
6. The mattress of Claim 5 in which each of said plurality of core members is comprised of a cylindrically-shaped piece of elastomeric material.
7. The mattress of Claim 5 in which said plurality of core members are selectively located in springs located around the perimeter of said inner spring assembly.
8. The mattress of Claim 5 in which said plurality of core members are selectively located in individual springs in the region of the mattress corresponding to a lumbar region of a person lying thereupon.
9. The mattress of Claim 5 in which said plurality of core members are located in alternating adjacent individual springs in a region of the mattress.
10. An inner spring assembly for a mattress comprising:
a plurality of coil spring, each coil spring having a top end, a bottom end and an axis, and adapted for use in a mattress so that said coil springs deflect in a direction from said top end toward said bottom end when a compressive load is applied to a top side of the mattress;
a resilient core members adapted to cooperate with selected coil springs, each of said core members extending from approximately said top end to said bottom end of an associated coil spring and coaxial with said spring.
a plurality of coil spring, each coil spring having a top end, a bottom end and an axis, and adapted for use in a mattress so that said coil springs deflect in a direction from said top end toward said bottom end when a compressive load is applied to a top side of the mattress;
a resilient core members adapted to cooperate with selected coil springs, each of said core members extending from approximately said top end to said bottom end of an associated coil spring and coaxial with said spring.
11. The inner spring assembly of Claim 10 in which each of said core members has a length slightly less than the length of its associated coil spring, whereby compression of the inner spring assembly is resisted initially by said one coil spring and then by both said coil spring and said core member.
12. The inner spring assembly of Claim 10 in which each of said core members has a diameter slightly less than the diameter of its associated coiled spring, whereby to facilitate construction friction between said core member and said one coiled spring unit is minimized.
13. A method of constructing an inner spring mattress having an area of enhanced firmness, comprising the steps of:
providing an inner spring assembly having a plurality of coil springs; and installing resilient core members within the convolutions of selected coil springs of the inner spring assembly, the selected coil springs corresponding to the desired area of enhanced firmness.
providing an inner spring assembly having a plurality of coil springs; and installing resilient core members within the convolutions of selected coil springs of the inner spring assembly, the selected coil springs corresponding to the desired area of enhanced firmness.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US67476091A | 1991-03-22 | 1991-03-22 | |
| US07/674,760 | 1991-03-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2049132A1 true CA2049132A1 (en) | 1992-09-23 |
Family
ID=24707782
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2049132 Abandoned CA2049132A1 (en) | 1991-03-22 | 1991-08-13 | Inner spring mattress with core member and method for construction thereof |
Country Status (3)
| Country | Link |
|---|---|
| AU (1) | AU1667492A (en) |
| CA (1) | CA2049132A1 (en) |
| WO (1) | WO1992016128A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5222264A (en) * | 1992-05-15 | 1993-06-29 | Regal Bedding 1977 Limited | Mattress construction |
| CN104411212A (en) * | 2012-07-26 | 2015-03-11 | L&P瑞士持有股份有限公司 | Spring core having a fully active spring and method of manufacturing the same |
| CN108669909A (en) * | 2018-07-16 | 2018-10-19 | 浙江华剑智能装备有限公司 | Spring assembly, spring string and spring pad |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE1007171A3 (en) * | 1993-05-14 | 1995-04-11 | Imhold Naamloze Vennootschap | Elastically resilient and springy SUPPORT ELEMENT ELEMENT WITH SUCH resilient elements. |
| DE19823845A1 (en) * | 1998-05-28 | 1999-12-09 | Spintex Ag Altendorf | Anatomical innerspring |
| ES2223211B1 (en) * | 2002-01-21 | 2005-12-16 | Flex Equipos De Descanso, S.A. | CORNER CORNER AND METHOD OF OBTAINING THE SAME. |
| BE1014979A3 (en) * | 2002-06-26 | 2004-07-06 | Catry Alphonse | Mattress spring, comprises support parts resiliently supported by combination of spiral and synthetic foam springs |
| BE1015661A3 (en) * | 2003-08-27 | 2005-07-05 | Imhold Nv | Method for producing a mattress core and composite spring applied thereby. |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3145020A (en) * | 1963-08-26 | 1964-08-18 | Calla Nick | Spring assisted foam cushion construction |
| US3401411A (en) * | 1967-03-10 | 1968-09-17 | Morrison Ben | Upholstery construction |
| US4519107A (en) * | 1983-07-08 | 1985-05-28 | Simmons U.S.A. Corporation | Boxspring having coil compression stops |
| US5020852A (en) * | 1990-05-29 | 1991-06-04 | Marion Laura E | Bicycle seat |
-
1991
- 1991-08-13 CA CA 2049132 patent/CA2049132A1/en not_active Abandoned
-
1992
- 1992-03-23 WO PCT/US1992/002283 patent/WO1992016128A1/en active Application Filing
- 1992-03-23 AU AU16674/92A patent/AU1667492A/en not_active Abandoned
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5222264A (en) * | 1992-05-15 | 1993-06-29 | Regal Bedding 1977 Limited | Mattress construction |
| CN104411212A (en) * | 2012-07-26 | 2015-03-11 | L&P瑞士持有股份有限公司 | Spring core having a fully active spring and method of manufacturing the same |
| CN108669909A (en) * | 2018-07-16 | 2018-10-19 | 浙江华剑智能装备有限公司 | Spring assembly, spring string and spring pad |
Also Published As
| Publication number | Publication date |
|---|---|
| WO1992016128A1 (en) | 1992-10-01 |
| AU1667492A (en) | 1992-10-21 |
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