Cold-resistant fuel-line hose

Details Cold-resistant fuel-line hose Cold-resistant fuel-line hose

1993-01-27

1995-02-21

Bryant, III, James E.

Pipes and tubular conduits

Flexible

Distinct layers

138103, 138141, 138177, 2642091, F16L 1100

Patent

active

053907051

ABSTRACT:
A layered tubing for use in a motor vehicle has a thick tubular inner layer formed of a synthetic resin having a predetermined hardness and a predetermined thickness and a thin tubular outer relax layer bonded externally to and surrounding the inner layer. This outer layer is formed of a synthetic resin having a hardness equal to at most 0.8 of the hardness of the inner layer and a thickness equal to at most 0.5 of the thickness of the inner layer. The inner layer can be one layer or can be formed of a plurality of coextruded and coaxial sublayers.

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"Plastics-Determination of Izod Impact Strength of Rigid Materials" Draft Intern. Standard ISO/DIS 180, Int. Org. for Standardization 1991.

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