Pipes and tubular conduits – Flexible – Corrugated
Patent
1982-09-20
1984-05-01
Marcus, Stephen
Pipes and tubular conduits
Flexible
Corrugated
62 55, F16L 1111
Patent
active
044455437
ABSTRACT:
Flexible hose for liquefied gases, comprising a tubular body of biaxially oriented polypropylene film (2) arranged between an inner helically wound wire (3) and an outer helically wound wire (4), said wires being wound at the same pitch but having the windings displaced by half a pitch width from each other.
REFERENCES:
patent: 2176762 (1939-10-01), Forbes
patent: 3272373 (1966-09-01), Alleaume et al.
patent: 3300571 (1967-01-01), Downey et al.
patent: 3565118 (1971-02-01), Stearns
patent: 3795245 (1974-03-01), Allen, Jr. et al.
patent: 3956544 (1976-05-01), Harrington
patent: 4315408 (1982-02-01), Karl
Marcus Stephen
Shell Research Limited
Thronson Mark
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