# US 8,539,985 B2 · Compact high pressure rubber hose

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- Number: US 8,539,985 B2
- Document ID: US8539985B2
- Status: Granted
- Kind: B2
- Application number: 13/146,548
- Filed: 2010-02-02
- Published: 2011-12-01
- Granted: 2013-09-24
- Earliest claimed: 2009-03-27
- Assignees: Parker-Hannifin Corporation
- Applicants: Andreas Weil; John Huckaby; Mathew Johns; Kyu Tae Lee; Perluigi Pelanda
- Inventors: Andreas Weil; John Huckaby; Mathew Johns; Kyu Tae Lee; Perluigi Pelanda
- Web page: https://patentgrep.com/patent/US8539985B2

## CPC

- F16L 11/083: {three or more layers}
- F16L: PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL

## Abstract

Compact flexible reinforce rubber hose adapted for conveying fluids under high pressure. The hose includes a thin inner tube formed of a vulcanized rubber.

## Claims

### Claim 1

A compact hose having a tubular wall comprising:
an innermost tube formed of a vulcanized rubber comprising an acrylonitrile butadiene rubber (NBR) or a copolymer or blend thereof, the innermost tube having a tube wall thickness (t) of between about 0.02-0.05 inch (0.5-1.25 mm);
a first reinforcement layer surrounding the innermost tube and being bonded thereto;
at least a second reinforcement layer surrounding the first interlayer;
an interlayer interposed between the first and the second reinforcement layer, the interlayer bonding the first reinforcement layer to the second reinforcement layer; and
a cover surrounding the second reinforcement layer,
wherein the wall has a hose wall thickness (T), and the tube wall thickness t comprises less than about 25% of the hose wall thickness.

### Claim 2 (depends on 1)

The hose of claim 1 wherein the rubber is filled with between about 15-66% by weight of a particulate filler selected from the group consisting of carbon blacks, clays, pulp fibers, and mixtures thereof.

### Claim 3 (depends on 1)

The hose of claim 1 wherein the rubber has a modulus of at about 12 MPa and a tensile strength of at least about 18 MPa.

### Claim 4 (depends on 1)

The hose of claim 1 wherein each of the first and the second reinforcement layers are spiral wound.

### Claim 5 (depends on 4)

The hose of claim 4 wherein:
the first reinforcement layer is spiral wound in a first winding direction; and
the second reinforcement layer is spiral wound in a second winding direction opposite the first winding direction.

### Claim 6 (depends on 5)

The hose of claim 5 wherein: the hose has a central longitudinal axis and
the first reinforcement layer is laid at a positive angle relative to the longitudinal axis; and
the second reinforcement layer is laid at a negative angle relative to the longitudinal axis.

### Claim 7 (depends on 6)

The hose of claim 6 wherein:
the angle of one of the first and the second reinforcement layer is between about 45° and 63°; and
the angle of the other one of the first and the second reinforcement layer is between about −45° and −65°.

### Claim 8 (depends on 1)

The hose of claim 1 wherein:
the first reinforcement layer comprises one or more filaments of a first metal or metal alloy wire; and
the second reinforcement layer lines comprise one or more filaments of a second metal or metal alloy wire fiber the same as or different than the first metal or metal alloy wire.

### Claim 9 (depends on 1)

The hose of claim 1 wherein the hose has an inner diameter defined by the innermost tube.

### Claim 10 (depends on 9)

The hose of claim 9 wherein:
the inner diameter is between about 0.25-2 inch (6-51 mm).

### Claim 11 (depends on 1)

The hose of claim 1 wherein the hose wall thickness T is between about 0.12-0.5 inch (3-13 mm).

### Claim 12 (depends on 1)

The hose of claim 1 wherein the hose is rated for a service pressure of 4000-8000 psi (28-55 MPa).