# US 2019/0168031 A1 · Protective interfaces for firefighter garments

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- Number: US 2019/0168031 A1
- Document ID: US20190168031A1
- Status: Published application
- Kind: A1
- Application number: 16/273,391
- Filed: 2019-02-12
- Published: 2019-06-06
- Earliest claimed: 2017-02-02
- Assignees: Innotex Inc.
- Applicants: Innotex Inc.
- Inventors: Claude Barbeau
- Web page: https://patentgrep.com/patent/US20190168031A1

## CPC

- A62B 17/003: {Fire-resistant or fire-fighters' clothes}
- A41D 13/002: with controlled internal environment
- B32B 3/08: characterised by added members at particular parts {(layer formed of separate pieces of material which are juxtaposed side-by-side B32B3/14, B32B3/18)}
- B32B 5/022: {Non-woven fabric}
- B32B 5/024: {Woven fabric}
- B32B 5/026: {Knitted fabric}
- B32B 5/26: another layer {next to it} also being fibrous or filamentary {(relative arrangement of fibres or filaments of different layers B32B5/12)}
- B32B 27/08: of synthetic resin
- B32B 27/12: next to a fibrous or filamentary layer
- B32B 27/322: {comprising halogenated polyolefins, e.g. PTFE}
- B32B 27/34: comprising polyamides
- B32B 27/40: comprising polyurethanes
- B32B 33/00: Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
- B32B 2250/03: 3 layers
- B32B 2250/40: Symmetrical or sandwich layers, e.g. ABA, ABCBA, ABCCBA
- B32B 2262/0269: Aromatic polyamide fibres
- B32B 2262/04: Cellulosic plastic fibres, e.g. rayon
- B32B 2307/3065: Flame resistant or retardant, fire resistant or retardant
- B32B 2307/724: Permeability to gases, adsorption
- B32B 2307/7246: Water vapor barrier
- B32B 2437/00: Clothing
- B32B 2571/00: Protective equipment
- A62B: DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING (valves specially adapted for medical use A61M39/00; life-saving devices, apparatus or methods specially adapted for use in water B63C9/00; divers' equipment B63C11/00; specially adopted for use with aircraft, e.g. parachutes, ejector seats, {B64D17/00, B64D25/10}; rescue devices peculiar to mining E21F11/00)
- A41D: OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM

## Abstract

A firefighter protective garment is provided. The garment includes an inner liner, an outer shell and a protective interface. The outer shell is made of a flame-retardant material and extends over at least a portion of the inner liner. The protective interface joins the inner liner and outer shell along at least one extremity of the garment. The protective interface is made of an interface material having particulate-impermeable and air-permeable properties.

## Claims

### Claim 1

A firefighter protective coat comprising:
an inner liner;
an outer shell made of a flame-retardant material, the outer shell extending over at least a portion of the inner liner; and
a band affixed to the inner liner at a waist height inside the coat and extending across a midriff portion of said firefighter protective coat, the band being made of an interface material having particulate-impermeable and air-permeable properties.

### Claim 2 (depends on 1)

The firefighter protective coat of claim 1, wherein the band has opposite ends overlapping with one another when the firefighter protective coat is worn by a wearer.

### Claim 3 (depends on 2)

The firefighter protective coat of claim 2, comprising an attachment mechanism configured for releasably joining said opposite ends.

### Claim 4 (depends on 3)

The firefighter protective coat of claim 3, wherein the attachment mechanism is a snap fastener arrangement.

### Claim 5 (depends on 1)

The firefighter protective coat of claim 1, wherein the band comprises an upper edge, the upper edge being permanently attached to the inner shell.

### Claim 6 (depends on 5)

The firefighter protective coat according to claim 5, comprising one or more seams attaching the upper edge of the band to the inner shell.

### Claim 7 (depends on 5)

The firefighter protective coat of claim 5, wherein the band comprises a lower edge, the lower edge being provided with an elastic strip.

### Claim 8 (depends on 1)

The firefighter protective coat of claim 1, wherein the particulate-impermeable properties of the interface material comprise blocking particulates having a size between about 0.1 μm to 1 μm.

### Claim 9 (depends on 1)

The firefighter protective coat of claim 1, wherein the air permeable properties of the interface material comprise an air permeability of at least about 4.5 cm3/sec/cm2.

### Claim 10 (depends on 1)

The firefighter protective coat of claim 1, wherein the interface material is a trilaminate comprising:
a membrane made of expanded polytetrafluoroethylene (ePTFE);
an aramid knit provided on a first side of the membrane; and
a second aramid knit provided on a second side of the membrane.

### Claim 11 (depends on 1)

The firefighter protective coat of claim 1, wherein the interface material is a trilaminate comprising:
a membrane made of expanded polytetrafluoroethylene (ePTFE);
an aramid knit provided on a first side of the membrane; and
a reprocessed cellulose multifilament knit provided on a second side of the membrane.

### Claim 12 (depends on 1)

The firefighter protective coat of claim 1, wherein the interface material comprises a meta-aramid material quilted between two aramid knits.

### Claim 13 (depends on 1)

The firefighter protective coat of claim 1, wherein the interface material comprises a synthetic aromatic polyamide polymer.

### Claim 14 (depends on 1)

The firefighter protective coat of claim 1, wherein the interface material comprises poly (meta-phenylene isophthalamide).

### Claim 15 (depends on 1)

The firefighter protective coat of claim 1, wherein the interface material comprises Nomex® Nano.

### Claim 16 (depends on 1)

The firefighter protective coat of claim 1, wherein the interface material comprises Nomex®

### Claim 17 (depends on 1)

The firefighter protective coat of claim 1, wherein the interface material comprises three layers, each layer comprising an aramid material.

### Claim 18 (depends on 1)

The firefighter protective coat of claim 1, wherein the interface material comprises:
a layer made of Nomex® Nano; and
a first layer made of Nomex®, the first layer being provided on a first side of the layer made of Nomex® Nano.

### Claim 19 (depends on 18)

The firefighter protective coat of claim 18, wherein the interface material comprises a second layer made of Nomex®, the second layer being provided on a second side of the layer made of Nomex® Nano.

### Claim 20 (depends on 1)

The firefighter protective coat of claim 1, wherein the interface material comprises an aramid material quilted to a layer of Nomex® Nano.