Patent US4380253A successfully refreshed from Google Patents.
US4380253A
Expired / Lapsed
US
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Heat-insulated hose for liquefied gases
Assignee: Shell Research Ltd
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Filing: 1981-02-17
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Granted: 1983-04-19
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Expires: 2001-02-17
Abstract
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.
Inventors
- 👤 Howard B. Mead
- 👤 Graham L. Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:13
CPC Classifications
F; F16; F16L; F16L59/00; F16L59/14; F16L59/153; F16L59/02; F16L59/029; F16L59/141
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
69 words
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.
Claim 2
Dependent Claim
69 words
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.
Claim 3
Dependent Claim
19 words
The hose of claim 1, further including a barrier of sheet material arranged between adjacent layers of heat-insulating material.
Claim 4
Dependent Claim
13 words
The hose of claim 2, wherein the sheet material is a polyester film.
Claim 5
Dependent Claim
12 words
The hose of claim 3, wherein the polyester film is polyethylene terephthalate.
Claim 6
Dependent Claim
20 words
The hose of claim 2, wherein said barrier of sheet material is helically wound between adjacent layers of heat-insulating material.
Claim 7
Dependent Claim
27 words
The hose of claim 1, wherein each successive layer of heat-insulating material is helically wound in an opposite direction from the helical winding of the previous layer.
Claim 8
Dependent Claim
26 words
The hose of claim 1, wherein the backing strips of fiber material are selected from the group comprising hessian, cotton cloth, glass-fiber cloth and terylene cloth.
Claim 9
Dependent Claim
18 words
The hose of claim 1, wherein the blocks of heat-insulating material are composed of a foamed plastic material.
Claim 10
Dependent Claim
12 words
The hose of claim 8, wherein the foamed plastic material is polystyrene.
Claim 11
Dependent Claim
12 words
The hose of claim 8, wherein the foamed plastic material is polyurethane.
Claim 12
Dependent Claim
16 words
The hose of claim 1, wherein the blocks of heat-insulating material are composed of balsa wood.
Claim 13
Dependent Claim
14 words
The hose of claim 1, wherein the outer protective sheath is composed of rubber.
Claim 14
Dependent Claim
14 words
The hose of claim 1, wherein the outer protective sheath is composed of neoprene.
Claim 15
Dependent Claim
18 words
The hose of claim 1, wherein the outer protective sheath is reinforced by a helically wound, metallic wire.
Claim 16
Dependent Claim
21 words
The hose of claim 1, having an overall density lower than that of water, enabling the hose to float on water.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-04-18 | 1986-10-18 | 1987-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-04-18 | 1990-10-18 | 1991-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-04-18 | 1994-10-18 | 1995-04-19 | $7700.00 | Window Closed / Lapsed |