# US 9,752,707 B2 · Double-jacketed fire hose with filament bundle stripes

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- Number: US 9,752,707 B2
- Document ID: US9752707B2
- Status: Granted
- Kind: B2
- Application number: 14/382,183
- Filed: 2013-03-01
- Published: 2015-03-05
- Granted: 2017-09-05
- Earliest claimed: 2012-03-02
- Assignees: Mercedes Textiles Ltd.
- Applicants: Mercedes Textiles Ltd.
- Inventors: Robert Richardson
- Web page: https://patentgrep.com/patent/US9752707B2

## CPC

- F16L 11/02: made of fibres or threads, e.g. of textile
- F16L 11/20: Double-walled hoses
- F16L 57/06: against wear (F16L57/04 takes precedence)
- A62C 33/00: Hose accessories
- F16L: PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- A62C: FIRE-FIGHTING (fire-extinguishing compositions, use of chemical substances in extinguishing fires A62D1/00; spraying, applying liquids or other fluent materials to surfaces in general B05; alarm arrangements G08B, e.g. fire alarms actuated by smoke or gases G08B17/10)

## Abstract

The present invention thus provides a double-jacketed lay-flat fire hose having an inner tube for conveying fluid, an inner jacket surrounding the inner tube and an outer jacket surrounding the inner jacket. The outer jacket is made of an abrasion-resistant woven fabric material that includes four longitudinal, spaced-apart and generally parallel stripes formed each of a bundle of longitudinally aligned filament yarns. This outer jacket is less prone to trapping air between the outer jacket and the inner jacket.

## Claims

### Claim 1

A double-jacketed fire hose comprising an inner tube for conveying fluid, an inner jacket surrounding the tube, and an outer jacket surrounding the inner jacket, the outer jacket being made of an abrasion-resistant woven fabric, the fabric comprising a plurality of longitudinally aligned, spaced-apart and generally parallel stripes, each of the stripes being formed of spaced-apart bundles of longitudinally aligned filament yarns, wherein the outer jacket comprises four spaced-apart bundles of longitudinally aligned filament yarns, wherein each of the four bundles has a width that is 3 to 10% of a circumference of the outer jacket, wherein the four spaced-apart bundles inhibit air from becoming trapped in the inter-jacket space between the inner and outer jackets.

### Claim 2 (depends on 1)

The fire hose as claimed in claim 1 wherein the filament yarns extend over substantially a complete length of the outer jacket.

### Claim 3 (depends on 1)

The fire hose as claimed in claim 1 wherein each bundle comprises between 16 and 24 filament yarns.

### Claim 4 (depends on 2)

The fire hose as claimed in claim 2 wherein each bundle comprises between 16 and 24 filament yarns.

### Claim 5 (depends on 1)

The fire hose as claimed in claim 1 wherein four bundles are woven into the fabric of the outer jacket such that two bundles of a first pair subtend an angle of between 20 and 90 degrees and two bundles of a second pair also subtend an angle of between 20 and 90 degrees.

### Claim 6 (depends on 1)

The fire hose as claimed in claim 1 wherein the width of each bundle represent 3 to 8% of the circumference of the outer jacket.

### Claim 7 (depends on 1)

The fire hose as claimed in claim 1 wherein the filament yarns are made of polyester.

### Claim 8 (depends on 2)

The fire hose as claimed in claim 2, wherein the outer jacket comprises four bundles woven into the fabric of the outer jacket such that two bundles of a first pair subtend an angle of between 20 and 90 degrees and two bundles of a second pair also subtend an angle of between 20 and 90 degrees.

### Claim 9 (depends on 3)

The fire hose as claimed in claim 3, wherein the four bundles are woven into the fabric of the outer jacket such that two bundles of a first pair subtend an angle of between 20 and 90 degrees and two bundles of a second pair also subtend an angle of between 20 and 90 degrees.

### Claim 10 (depends on 2)

The fire hose as claimed in claim 2 wherein the width of each bundle represent 3 to 8% of the circumference of the outer jacket.

### Claim 11 (depends on 3)

The fire hose as claimed in claim 3 wherein the width of each bundle represent 3 to 8% of the circumference of the outer jacket.

### Claim 12 (depends on 5)

The fire hose as claimed in claim 5 wherein the width of each bundle represent 3 to 8% of the circumference of the outer jacket.

### Claim 13 (depends on 2)

The fire hose as claimed in claim 2 wherein the filament yarns are made of polyester.