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US 4,380,253 AGranted
Heat-insulated hose for liquefied gases
AssigneeShell Research Limited
InventorsHoward B. Mead, Graham L. Williams
Life of this patent
Estimating the term…
Abstract
A heat-insulated hose for liquefied gases, in particular, liquefied natural gas, comprising an inner hose (5) resistant to cryogenic temperatures, a plurality of successive layers (7A, 7B, 7C) of heat-insulating material, for example, polystyrene foam, arranged around the inner hose (5) and an outer protective sheath (18) arranged around the outermost layer of heat-insulating material, wherein each layer (7A, 7B, 7C) comprises a helically wound strip (6A, 6B, 6C) of fibre material holding together a mosaic of blocks of the heat-insulating material.
Claims15
A heat-insulated hose for liquefied gases, comprising:
- an inner hose which maintains its strength and flexibility at cryogenic temperatures;
- a plurality of successive layers of heat-insulating material arranged around the inner hose;
- said layers of heat-insulating material comprising helically wound backing strips of fibre material upon which a mosiac of blocks of heat-insulating material is melted;
- and
- an outer protective sheath arranged around the outermost layer of heat-insulating material.
2 more elements
Dependencies are inferred from the claim text.