Pocketed spring assembly comprising strings of springs having non-linear separating seams

Patent metadata

Field	Value
Publication number	US-10426274-B2
Application number	US-201815952373-A
Country	US
Kind code	B2
Filing date	Apr 13, 2018
Priority date	Jun 19, 2013
Publication date	Oct 1, 2019
Grant date	Oct 1, 2019

Abstract

A bedding or seating product comprises a pocketed spring assembly comprising a plurality of parallel strings of individually pocketed springs. The strings of springs may extend from head-to-foot or side-to-side of the product. Adjacent individually pocketed springs are separated from each other by at least one separating seam. Each of the separating seams comprises a branched end portion.

First claim

We claim:

1. A bedding or seating product comprising:
a pocketed spring assembly comprising a plurality of parallel strings of springs joined to each other, each of the strings of springs comprising a plurality of interconnected pockets, each of the pockets containing at least one spring encased in fabric, the fabric being joined to itself along a longitudinal seam,
wherein adjacent individually pocketed springs are separated from each other by first and second separating seams joining opposed first and second plies, each of the separating seams comprising a generally U-shaped end portion and a linear portion extending inwardly from the generally U-shaped end portion, wherein the fabric is folded downwardly from an upper surface of the string of springs towards a lower surface of the string of springs within the generally U-shaped end portion of the first separating seam, and the fabric is folded upwardly from the lower surface of the string of springs towards the upper surface of the string of springs within the generally U-shaped end portion of the second separating seam;
cushioning materials on at least one side of the pocketed spring assembly; and
an upholstered covering encasing the pocketed spring assembly and cushioning materials.

2. A bedding or seating product comprising:
a pocketed spring assembly comprising a plurality of parallel strings of springs joined to each other, each of the strings of springs comprising a plurality of interconnected pockets, each of the pockets containing at least one spring encased in fabric, the fabric being joined to itself along a longitudinal seam,
wherein adjacent individually pocketed springs are separated from each other by first and second separating seams joining opposed first and second plies, each of the first and second separating seams comprising a generally U-shaped end portion and a linear portion extending inwardly from the generally U-shaped end portion, wherein the fabric is folded downwardly from an upper surface of the string of springs towards a lower surface of the string of springs within the generally U-shaped end portion of the first separating seam, and the fabric is folded upwardly from the lower surface of the string of springs towards the upper surface of the string of springs within the generally U-shaped end portion of the second separating seam.

3. The product of claim 2 wherein the longitudinal seam is on one side of the string of springs.

4. The product of claim 2 wherein at least some of the springs have a barrel shape.

5. The product of claim 2 wherein four layers of fabric are located in the generally U-shaped end portions of the separating seams.

6. The product of claim 2 wherein the strings of springs extend longitudinally.

7. The product of claim 2 wherein the strings of springs extend transversely.

8. The product of claim 2 wherein the longitudinal seam is below free edges of the fabric.

9. A pocketed spring assembly for use in a bedding or seating product, the pocketed spring assembly comprising:
a plurality of strings of springs joined together, each of said strings of springs comprising a piece of fabric joined to itself along a longitudinal seam and multiple spaced separating seams to define a plurality of pockets, each pocket containing at least one spring and each separating seam including a U-shaped end portion and a linear portion, wherein the piece of fabric used to make the string of springs is folded downwardly from an upper surface of the string of springs towards a bottom of the U-shaped end portion of the first separating seam and the fabric is folded upwardly from a lower surface of the string of springs towards a top of the U-shaped end portion of the second separating seam.

10. The pocketed spring assembly of claim 9 wherein the end portions of adjacent separating seams abut end turns of a spring therebetween and the linear portions of the adjacent separating seams are spaced from the central convolutions of the spring to allow a portion of the spring to expand upon compression.

11. The pocketed spring assembly of claim 9 wherein the strings of springs extend longitudinally.

12. The pocketed spring assembly of claim 9 wherein the strings of springs extend transversely.

13. The pocketed spring assembly of claim 9 wherein at least some of the springs are barrel-shaped.

14. A pocketed spring assembly comprising:
a plurality of strings of springs joined together, each of said strings of springs comprising a piece of fabric joined to itself along a longitudinal seam and separating seams to define a plurality of pockets, each pocket containing at least one spring, adjacent springs being separated by first and second separating seams,
wherein each of the separating seams comprises a linear portion and an end portion, each end portion extending outwardly from the linear portion of the separating seam, said spring assembly being characterized, when a load is placed upon the spring assembly, by the ability of at least some central convolutions of the spring to expand in the pocket of fabric, wherein the piece of fabric is folded downwardly from an upper surface of the string of springs towards a bottom of the first end portion of the first separating seam, and the fabric is folded upwardly from a lower surface of the string of springs towards a top of the second end portion of the second separating seam.

15. The pocketed spring assembly of claim 14 wherein at least some of the springs are barrel-shaped.

16. The pocketed spring assembly of claim 14 wherein each end portion comprises two branches.

17. A pocketed spring assembly for use in a bedding or seating product, the pocketed spring assembly comprising:
a plurality of strings of springs joined together, each of said strings of springs comprising a plurality of interconnected pocketed springs, each spring of which is contained within a pocket of fabric, adjacent individually pocketed springs being separated from each other by at least one separating seam joining first and second plies on opposed sides of the string of springs, each of the separating seams comprising a generally U-shaped end portion,
wherein the fabric is folded from an upper surface of the string of springs towards a lower surface of the string of springs and the branched end portion of a first separating seam secures the folded fabric in place and the fabric is folded upwardly from a lower surface of the string of springs towards the upper surface of the string of springs and the generally U-shaped end portion of a second separating seam secures the folded fabric in place.

18. The pocketed spring assembly of claim 17 wherein the strings of springs extend longitudinally.

19. The pocketed spring assembly of claim 17 wherein at least some of the springs are barrel-shaped.

20. The pocketed spring assembly of claim 17 wherein the strings of springs extend transversely.

21. A string of springs for use in a pocketed spring assembly, the string of springs comprising:
a row of interconnected pockets, each of the pockets containing at least one spring encased in fabric, the fabric being joined to itself along a longitudinal seam;
wherein adjacent pockets of springs are separated from each other by separating seams, each of the separating seams joining multiple plies of the strings of springs together and comprising at least one end portion wherein the fabric is folded downwardly from an upper surface of the string of springs towards a lower surface of the string of springs and from the low

Assignees

• L&P Property Man Co

Inventors

• Mossbeck Niels S
• Richmond Darrell A

Classifications

• A47C27/14

  with foamed material inlays · CPC title

• A47C27/064 Primary

  Pocketed springs · CPC title

• A47C27/07

  Attaching, or interconnecting of, springs in spring inlays · CPC title

• A47C23/30

  using combinations of springs covered by more than one of the groups A47C23/02 - A47C23/12; Frames therefor · CPC title

• A47C27/065

  of special shape · CPC title