IP Library › Granted Patent US 7,614,428
Granted Patent B2
US 7,614,428 · App. 11/616,599 · Granted Nov 10, 2009

Power steering hose design for performance in high pressure and low to high volumeric expansion environments

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Quick Facts
Patent No.
US 7,614,428
App. No.
11/616,599
Granted
Nov 10, 2009
Kind
B2
Abstract

A new and improved power steering hose assembly is described, which may comprise a core hose layer, a first reinforcing layer, an intermediate hose layer, a second reinforcing layer and an outer hose layer. The first reinforcing layer has a braid pattern formed in a 1-over, 1-under pattern. The intermediate hose layer is positioned over the first reinforcing layer. The second reinforcing layer is disposed over the first reinforcing layer. The second reinforcing layer has a braid pattern formed in one of a 3-over, 3-under pattern or a 2-over, 2-under braid pattern. The outer hose layer is positioned over the second reinforcing layer.

Claims (38)

1. A power steering hose assembly, comprising:

a core hose layer;

a first reinforcing layer over said core hose layer, wherein said first reinforcing layer is a plastic barrier;

an intermediate hose layer over said first reinforcing layer;

a second reinforcing layer over said first reinforcing layer, said second reinforcing layer having a braid pattern formed in one of a 3-over, 3-under pattern or 2-over, 2-under pattern; and,

an outer hose layer over said second reinforcing layer.

2. The power steering hose assembly of claim 1 , said first reinforcing layer having a braid pattern formed in a 1-over, 1-under braid pattern.

3. The power steering hose assembly of claim 1 , wherein said second reinforcing layer is configured in a 3-over, 3-under braid pattern.

4. The power steering hose assembly of claim 3 , wherein said second reinforcing layer is a 24 or 36 carrier configuration.

5. The power steering hose assembly of claim 1 , wherein said core hose layer is chlorosulfonated polyethylene, a chlorosulfonated polyethylene/chlorinated polyethylene blend, a hydrogenated nitrile rubber or a nitrile rubber.

6. The power steering hose assembly of claim 1 , wherein said intermediate hose layer is chlorosulfonated polyethylene, chlorinated polyethylene, hydrogenated nitrile rubber or neoprene rubber.

7. The power steering hose assembly of claim 1 , wherein said outer hose layer is chlorosulfonated polyethylene, chlorinated polyethylene, or hydrogenated nitrile rubber.

8. The power hose steering assembly of claim 1 , wherein said 1-over, 1-under braid pattern is formed by a 36 carrier configuration.

9. The power hose steering assembly of claim 1 , wherein said first reinforcing layer is formed from a polyester yarn.

10. The power hose steering assembly of claim 1 , wherein said second reinforcing layer is formed from a polyester yarn.

11. The power hose steering assembly of claim 1 , wherein at least one of said first and second reinforcing layers comprises reinforcing members formed from a plurality of strands of reinforcing material.

12. A power steering hose assembly, comprising:

a core hose layer;

a first reinforcing layer over said core hose layer, wherein said first reinforcing layer further comprises an extruded plastic layer;

an intermediate hose layer over said first reinforcing layer;

a second reinforcing layer over said first reinforcing layer, said second reinforcing layer having a braid pattern formed in one of a 3-over, 3-under pattern or 2-over, 2-under pattern; and,

an outer hose layer over said second reinforcing layer.

13. The power hose steering assembly of claim 1 , wherein said hose comprises an outer diameter, said outer diameter being up to 1.000 inches.

14. A method of making a power steering hose, comprising:

forming a core hose layer;

forming a first reinforcing layer over the core hose layer;

forming a plastic barrier over said core hose layer;

forming an intermediate hose layer over the first reinforcing layer;

braiding a second reinforcing layer over the intermediate hose layer in one of a 3-over, 3-under pattern or a 2-over, 2-under pattern; and

forming an outer hose layer over the second reinforcing layer.

15. The method of claim 14 , wherein the step of forming a first reinforcing layer comprises the step of:

braiding said first reinforcing layer in a 1-over, 1-under braid pattern.

16. A power steering hose assembly, comprising:

a core hose layer;

a first reinforcing layer over said core hose layer, said first reinforcing layer being a plastic barrier layer;

an intermediate hose layer over said first reinforcing layer, said intermediate layer being a friction rubber layer;

a second reinforcing layer over said first reinforcing layer, said second reinforcing layer being a polyester yarn and having a braid pattern formed in one of a 3-over, 3-under pattern or a 2-over, 2-under pattern; and,

an outer hose layer over said second reinforcing layer.