FLEXIBLE TUBULAR FRAMEWORK Russian patent published in 1997 - IPC

Abstract RU 2072060 C1

FIELD: manufacture of tubes. SUBSTANCE: tubular framework formed by profiled band has at least one compartment and one U-shaped inner space adjacent to compartment; compartment is formed by walls of one and the same turn. Each compartment forms closed volume of constant section and one or several compartments have rectangular section. Radial surfaces of adjacent turns are located in U-shaped space of band. EFFECT: enhanced reliability. 27 dwg

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RU 2 072 060 C1

Authors

Zhoze Mallen Kherrero[Fr]

Gi Le Behl'[Fr]

Zhani Fere[Fr]

Dates

1997-01-20—Published

1991-07-29—Filed