# US 5,704,085 A · Edge support for a mattress

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- Number: US 5,704,085 A
- Document ID: US5704085A
- Status: Granted
- Kind: A
- Application number: 08/687,798
- Filed: 1996-07-19
- Granted: 1998-01-06
- Earliest claimed: 1996-07-19
- Assignees: Serta, Inc.
- Inventors: Robert J. Sabalaskey
- Web page: https://patentgrep.com/patent/US5704085A

## CPC

- A47C 27/066: {Edge stiffeners}
- A47C: CHAIRS; SOFAS; BEDS

## Abstract

A mattress including an innerspring, upholstery topper layers including at least one foam layer, and quilt panel layers. At least one upholstery foam layer includes a firming edge of foam about its perimeter. The firming edge of the upholstery foam layer functions to provide a firmer mattress edge without compromising the thickness of the mattress or requiring additional materials or labor operations during manufacturing.

## Claims

### Claim 1

A mattress having a perimeter, comprising:
an innerspring;
at least one upholstery topper layer provided adjacent to the innerspring;
a foam layer provided in at least one of the upholstery topper layers;
at least one quilt panel layer provided adjacent to at least one of the upholstery topper layers; and
an edge of foam attached about a perimeter of the foam layer providing an edge about the perimeter of the mattress which is firmer than the foam of the foam layer,
wherein the edge of foam is attached directly to the perimeter of the foam layer.

### Claim 2 (depends on 1)

The mattress of claim 1 wherein the edge is constructed of polyurethane foam.

### Claim 3 (depends on 1)

The mattress of claim 1 wherein the foam of the edge has the same thickness as the foam of the foam layer.

### Claim 4 (depends on 1)

The mattress of claim 1 wherein the edge is approximately from 4 to 6 times firmer than the foam of the foam layer.

### Claim 5 (depends on 4)

The mattress of claim 4 wherein the edge is approximately 5 times firmer than the foam of the foam layer.

### Claim 6 (depends on 1)

The mattress of claim 1 wherein the edge is attached to the perimeter of the foam layer with glue.

### Claim 7 (depends on 1)

The mattress of claim 1 wherein the foam of the edge is in the range of approximately 130 to 170 IFD.

### Claim 8 (depends on 7)

The mattress of claim 7 wherein the foam of the edge is approximately 150 IFD.

### Claim 9 (depends on 1)

The mattress of claim 1 wherein the foam of the foam layer is in the range of approximately 20 to 40 IFD.

### Claim 10 (depends on 9)

The mattress of claim 9 wherein the foam of the foam layer is approximately 30 IFD.

### Claim 11 (depends on 1)

The mattress of claim 1 wherein the edge frames the perimeter of the foam layer.

### Claim 12

A mattress having a perimeter, comprising:
an innerspring;
at least one upholstery topper layer provided adjacent to the innerspring;
a foam layer provided in at least one of the upholstery topper layers;
at least one quilt panel layer provided adjacent to at least one of the upholstery topper layers; and
an edge of foam attached about a perimeter of the foam layer for providing an edge about the perimeter of the mattress which is firmer than the foam of the foam layer,
wherein the foam of the edge is in the range of approximately 130 to 170 IFD.

### Claim 13 (depends on 12)

The mattress of claim 12 wherein the foam of the edge is approximately 150 IFD.

### Claim 14 (depends on 12)

The mattress of claim 12 wherein the foam of the foam layer is in the range of approximately 20 to 40 IFD.

### Claim 15 (depends on 14)

The mattress of claim 14 wherein the foam of the foam layer is approximately 30 IFD.

### Claim 16 (depends on 12)

The mattress of claim 12 wherein the edge is attached to the perimeter of the foam layer with glue.

### Claim 17 (depends on 12)

The mattress of claim 12 wherein the edge is constructed of polyurethane foam.