Method of disassembling pocketed spring assembly with dimensionally stabilizing substrate

Patent metadata

Field	Value
Publication number	US-12369722-B2
Application number	US-202318313470-A
Country	US
Kind code	B2
Filing date	May 8, 2023
Priority date	May 23, 2018
Publication date	Jul 29, 2025
Grant date	Jul 29, 2025

Abstract

A pocketed spring assembly comprises a plurality of parallel strings of individually pocketed springs. A dimensionally stabilizing substrate is secured to at least some of the strings on one of the top and bottom surfaces of the strings. A scrim sheet is secured to at least some of the strings on an opposed surface of the strings to maintain the positions of the strings. The dimensionally stabilizing substrate is laterally rigid enough to maintain length and width dimensions of the coil spring assembly. However, the dimensionally stabilizing substrate is flexible enough to allow the pocketed spring assembly to be roll packed for shipping.

First claim

What is claimed is:

1. A method of disassembling a pocketed spring assembly, the method comprising:
providing a pocketed spring assembly having a dimensionally stabilizing substrate secured to one of top and bottom surfaces of the pocketed spring assembly and a scrim sheet secured to the other of the top and bottom surfaces of the pocketed spring assembly, said pocketed spring assembly comprises a plurality of parallel strings of springs joined together, each of said strings comprising a plurality of individually pocketed springs, each of said strings comprising a piece of fabric joined along a longitudinal seam, first and second opposed plies of fabric being on opposite sides of the springs, a plurality of pockets being formed along a length of said string by transverse seams joining said first and second plies, at least one spring being positioned in each said pockets, said dimensionally stabilizing substrate being thicker than the scrim sheet and more rigid than the scrim sheet; and
pulling the dimensionally stabilizing substrate and the scrim sheet away from each other to tear the strings along perforations in the piece of fabric.

2. A method of claim 1 , further comprising removing the springs from the piece of fabric.

3. A method of claim 1 , wherein said dimensionally stabilizing substrate comprises a sheet at least twice as thick as the scrim sheet to facilitate gripping the dimensionally stabilizing substrate.

4. The method of claim 1 wherein said dimensionally stabilizing substrate has a weight of at least two ounces per square.

5. The method of claim 1 , wherein tearing the strings along perforations in the piece of fabric is facilitated by each of the strings having perforations fully around the string.

6. The method of claim 1 wherein the perforations are closer to the dimensionally stabilizing substrate than to the scrim sheet to facilitate tearing the strings.

7. The method of claim 1 wherein tearing the strings along perforations in the piece of fabric avoids tearing the transverse seams of the pocketed spring assembly.

8. A method of disassembling a pocketed spring assembly, the method comprising:
providing a pocketed spring assembly having a dimensionally stabilizing substrate secured to one of top and bottom surfaces of the pocketed spring assembly and a scrim sheet secured to the other of the top and bottom surfaces of the pocketed spring assembly, said pocketed spring assembly comprises a plurality of parallel strings of springs joined together, each of said strings comprising a plurality of individually pocketed springs, each of said strings comprising a piece of fabric joined along a longitudinal seam, first and second opposed plies of fabric being on opposite sides of the springs, a plurality of pockets being formed along a length of said string by transverse seams joining said first and second plies, at least one spring being positioned in each said pockets, said dimensionally stabilizing substrate being thicker than the scrim sheet and more rigid than the scrim sheet; and
tearing each of the strings along perforations in the piece of fabric to separate the springs from the fabric.

9. The method of claim 8 , wherein tearing each of the strings along perforations in the piece of fabric separates the spring assembly into two sections of fabric.

10. The method of claim 9 , wherein one of the sections of fabric has the dimensionally stabilizing substrate and the other section of fabric has the scrim sheet.

11. The method of claim 8 , wherein tearing each of the strings along perforations in the piece of fabric comprises pulling apart the dimensionally stabilizing substrate and the scrim sheet.

12. The method of claim 8 , wherein tearing each of the strings along perforations in the piece of fabric comprises using the dimensionally stabilizing substrate and the scrim sheet as handles.

13. The method of claim 8 , wherein the scrim sheet and the fabric of the strings are made of the same material to facilitate recycling.

14. The method of claim 8 , wherein said springs fall out of the pockets of the spring assembly after the strings are torn.

15. A method of disassembling a pocketed spring assembly, the method comprising:
providing a pocketed spring assembly having a dimensionally stabilizing substrate secured to one of top and bottom surfaces of the pocketed spring assembly and a scrim sheet secured to the other of the top and bottom surfaces of the pocketed spring assembly, said pocketed spring assembly comprises a plurality of parallel strings of springs joined together, each of said strings comprising a plurality of individually pocketed springs, each of said strings comprising a piece of fabric joined along a longitudinal seam, first and second opposed plies of fabric being on opposite sides of the springs, a plurality of pockets being formed along a length of said string by transverse seams joining said first and second plies, at least one spring being positioned in each said pockets, said dimensionally stabilizing substrate being thicker than the scrim sheet and more rigid than the scrim sheet;
grasping the dimensionally stabilizing substrate with one hand and the scrim sheet with the other hand; and
tearing each of the strings along perforations in the piece of fabric to separate the springs from the fabric.

16. The method of claim 15 , wherein the dimensionally stabilizing substrate is easier to grasp than the scrim sheet because it is thicker than the scrim sheet.

17. The method of claim 15 , wherein said dimensionally stabilizing substrate is rectangular and extends outwardly from the strings.

18. The method of claim 15 , wherein said scrim sheet is rectangular and extends outwardly from the strings.

19. The method of claim 15 , wherein said perforations go around each of the strings.

20. The method of claim 15 , wherein said springs fall out of the pockets of the spring assembly after the strings are torn.

Assignees

• L&P Property Man Co

Inventors

• Jewett Jason V
• Thompson Seth
• Richmond Darrell

Classifications

• A47C7/18

  having foamed material included in cushioning part · CPC title

• B68G7/02

  Making upholstery from waddings, fleeces, mats, or the like (filling methods B68G7/06) · CPC title

• B68G9/00

  Placing upholstery springs in pockets; Fitting springs in upholstery · CPC title

• A47C7/35

  Combinations of different types of springs; Adjustable springs; Attachment of springs to other springs or to {the base} frame {; Springs for seat parts not provided for in other groups of this subclass} · CPC title

• A47C27/062

  of different resiliencies · CPC title