Back to results
US 2011/0226375 A1Published application
Low-Permeation Flexible Fuel Hose
AssigneeThe Gates Corporation
InventorsEarl Harris, Lance Miller, Dana Stripe
Life of this patent
Estimating the term…
Abstract
A flexible hose or a tubing having a barrier layer of polyamide 6 having an impact modifier, and/or branched molecular structure, a flexural modulus of 1 to 2 GPa and/or a tensile elongation of 100% or more. The hose may have additional layers such as an HNBR rubber inner tube, an EVM/CPE rubber blend outer cover, a textile or wire reinforcement, or the like. Permeability to ethanol- and methanol-containing fuels is very low. Permeability to B20 biofuels is very low.
Claims19
A fuel hose comprising:
- an HNBR rubber inner tube;
- an EVM/CPE blend rubber outer cover;
- an intermediate barrier layer consisting essentially of an impact-modified polyamide 6;
- and
- a textile reinforcement disposed between said barrier layer and said outer cover.
2 more elements
A hose comprising:
- an HNBR rubber inner tube;
- an EVM/CPE blend rubber outer cover;
- an intermediate barrier layer consisting essentially of an impact-modified polyamide 6;
- and
- a textile reinforcement disposed between said barrier layer and said outer cover.
2 more elements
Dependencies are inferred from the claim text.