Tube comprising composite layers with different modulii of elast

Details Tube comprising composite layers with different modulii of elast Tube comprising composite layers with different modulii of elast

1995-05-11

1996-03-19

Bryant, III, James E.

Pipes and tubular conduits

Flexible

Braided, interlaced, knitted or woven

138125, 138130, 138153, 138174, F16L 916

Patent

active

054996619

ABSTRACT:
A composite material tube, withstanding the internal pressure, and comprising at least two layers of pressure reinforcement fibers, or pressure resistant layers, wound at an angle at least equal in absolute value to 70.degree., with respect to the center axis of the tube. The two layers both undergo radial expansion under an effect of the pressure, with one of these two layers being inside the other. A circumferential modulus of elasticity of the external layer is greater than the circumferential modulus of elasticity of the internal layer.

REFERENCES:
patent: 790906 (1905-05-01), Marks
patent: 1010088 (1911-11-01), Subers
patent: 1010090 (1911-12-01), Subers
patent: 4039006 (1977-08-01), Inone et al.
patent: 4273160 (1981-06-01), Lowles
patent: 4514245 (1985-04-01), Chabtier
patent: 4867205 (1989-09-01), Bournazel et al.

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