Pipes and tubular conduits – Flexible – Spirally wound material
Patent
1974-10-10
1978-08-15
Bell, Jr., Houston S.
Pipes and tubular conduits
Flexible
Spirally wound material
F16L 1100
Patent
active
041065271
ABSTRACT:
A heavy duty conduit is disclosed for services such as oxygen supply to lances and torches and includes plural metallic strands which are twisted together with a central channel therein to form a duct for the gaseous medium, an impervious sheath enclosing the duct, and a helical insert in the central flow channel of the duct to preclude inward shifting of the strands and consequent disturbance of the flow channel and to provide turbulent flow of the gaseous medium therethrough.
REFERENCES:
patent: 1953915 (1934-04-01), Burgett et al.
patent: 2180442 (1939-11-01), Tondeur
Bell, Jr. Houston S.
Shepperd John W.
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