Compact high pressure rubber hose

• US 8,539,985 B2
• Filed: 02/02/2010
• Issued: 09/24/2013
• Est. Priority Date: 03/27/2009
• Status: Active Grant

• Current Assignee: Parker Intangibles LLC (Parker-Hannifin Corporation)
• Original Assignee: Parker-Hannifin Corporation
• Inventors: Weil, Andreas, Huckaby, John, Johns, Mathew, Pelanda, Perluigi, Lee, Kyu Tae
• Primary Examiner(s): Brinson, Patrick F
• Application Number:
  US13/146,548
• Publication Number:
  US 20110290362A1
• Time in Patent Office: 1,330 Days
• Field of Search: 138/129, 138/130, 138/144, 138/172, 138/140, 428/36.2, 428/36.91, 428/36.8
• US Class Current: 138/126
• CPC Class Codes: F16L 11/083 three or more layers

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

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.

2. 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.

3. 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.

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

5. 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.

6. 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.

7. 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°

.

8. 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.

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

10. The hose of claim 9 wherein:

the inner diameter is between about 0.25-2 inch (6-51 mm).

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

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