# US 2008/0184493 A1 · Slow Acting Pocketed Spring Core

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- Number: US 2008/0184493 A1
- Document ID: US20080184493A1
- Status: Published application
- Kind: A1
- Application number: 11/672,088
- Filed: 2007-02-07
- Published: 2008-08-07
- Earliest claimed: 2007-02-07
- Assignees: L&P Property Management Company
- Inventors: Niels S. Mossbeck; Terry W. Moser
- Web page: https://patentgrep.com/patent/US20080184493A1

## CPC

- A47C 27/064: {Pocketed springs}
- A47C 27/053: {with only one layer of foamed material}
- Y10T 29/48: Upholstered article making
- Y10T 29/481: Method
- Y10T 29/49613: for human comfort
- Y10T 29/49863: with prestressing of part
- A47C: CHAIRS; SOFAS; BEDS
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

Spring cushions having slow-acting pocketed spring cores characterized by the individual springs of the cores being sealingly pocketed within semi-impermeable fabric material and a method of making such pocketed spring cores.

## Claims

### Claim 1

A method of manufacturing a bedding or seating cushion core, which: cushion core is characterized by slow and gentle compression when a load is placed on the top of the cushion core, said method comprising:
forming a continuous string of individually pocketed springs, each spring of which is contained within a sealed pocket of fabric, which fabric is semi-impermeable to air flow through said fabric;
assembling and securing said string of springs into a matrix of pocketed springs so as to create a cushion core having spaced top and bottom surfaces;
said resulting cushion core being characterized, when a load is placed upon the top surface of the cushion core, by the rate of deflection of the cushion core being retarded by the rate at which air escapes through said semi-impermeable fabric within which the pocketed springs are contained.

### Claim 2 (depends on 1)

The method of claim 1 wherein said resulting cushion core is further characterized by the rate of recovery of the core to its original height after removal of a load from the top surface of the core being retarded by the rate at which air returns through said semi-impermeable fabric into the pockets within which compressed springs are contained.

### Claim 3

A method of manufacturing a bedding or seating cushion core, which cushion core is characterized by slow and gentle compression when a load is placed on the top of the cushion core, said method comprising:
forming a continuous string of individually pocketed springs, each spring of which is contained within a sealed pocket of fabric, which fabric is semi-impermeable to air flow through said fabric;
cutting said continuous string of pocketed springs into individual strings of pocketed springs of discrete and predetermined length;
assembling and securing said strings of springs into a side-by-side matrix of pocketed springs so as to create a cushion core having spaced top and bottom surfaces;
said resulting cushion core being characterized, when a load is placed upon the top surface of the cushion core, by the rate of deflection of the cushion core being retarded and controlled by the rate at which air escapes through said semi-impermeable fabric within which the pocketed springs are contained.

### Claim 4 (depends on 3)

The method of claim 3 wherein said resulting cushion core is further characterized by the rate of recovery of the core to its original height after removal of a load from the top surface of the core being retarded by the rate at which air returns through said semi-impermeable fabric into the pockets within which compressed springs are contained.

### Claim 5

A bedding or seating cushion core, comprising:
a matrix of interconnected pocketed springs, each spring of which is contained within a sealed pocket of fabric, which fabric is semi-impermeable to air flow through said fabric;
said matrix creating a cushion core having spaced top and bottom surfaces;
said cushion core being characterized, when a load is placed upon the top surface of the cushion core, by the rate of deflection of the cushion core being retarded by the rate at which air escapes through said semi-impermeable fabric within which the pocketed springs are contained.

### Claim 6 (depends on 5)

The cushion core of claim 5 wherein said fabric is a coated polypropylene point bonded non-woven fabric material.

### Claim 7

A method of manufacturing a bedding or seating cushion core, which cushion core is characterized by slow and gentle compression when a load is placed on the top of the cushion core, said method comprising:
forming a continuous string of individually pocketed springs, each spring of which is contained within a sealed pocket of fabric, which fabric is semi-impermeable to air flow through said fabric;
assembling and securing said string of springs into a matrix of pocketed springs so as to create a cushion core having spaced top and bottom surfaces;
said resulting cushion core being characterized, when a load is placed upon the top surface of the cushion core and then removed, by the rate of return of the cushion core to its original height being retarded by the rate at which air escapes through said semi-impermeable fabric within which the pocketed springs are contained.

### Claim 8

A method of manufacturing a bedding or seating cushion core, which cushion core is characterized by slow and gentle compression when a load is placed on the top of the cushion core, said method comprising:
forming a continuous string of individually pocketed springs, each spring of which is contained within a sealed pocket of fabric, which fabric is semi-impermeable to air flow through said fabric;
cutting said continuous string of pocketed springs into individual strings of pocketed springs of discrete and predetermined length;
assembling and securing said strings of springs into a side-by-side matrix of pocketed springs so as to create a cushion core having spaced top and bottom surfaces;
said resulting cushion core being characterized, when a load is placed upon the top surface of the cushion core, by the rate of deflection of the cushion core being retarded and controlled by the rate at which air escapes through said semi-impermeable fabric within which the pocketed springs are contained.

### Claim 9

A bedding or seating cushion core, comprising:
a matrix of interconnected pocketed springs, each spring of which is contained within a sealed pocket of fabric, which fabric is semi-impermeable to air flow through said fabric;
said matrix creating a cushion core having spaced top and bottom surfaces;
said cushion core being characterized, when a load is placed upon the top surface of the cushion core and then removed, by the rate of return of the cushion core to its original height being retarded by the rate at which air escapes through said semi-impermeable fabric within which the pocketed springs are contained.

### Claim 10 (depends on 9)

The cushion core of claim 9 wherein said fabric is a coated polypropylene point bonded non-woven fabric material.