US3948198A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low temperature liquefied gas tanker ship
Assignee: Eneos Globe Corp
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Filing: 1975-02-14
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Granted: 1976-04-06
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Expires: 1995-02-14
Abstract
Abstract A wall structure of a low temperature liquefied gas tanker ship of a type which comprises a hull structure, a compression resistant heat insulating layer and an inner membraneous vessel, characterized by a dish-like secondary barrier wall which covers only a lower portion of the inner membraneous vessel, an upper edge portion of the dish-like secondary barrier wall being bent outwardly to form a flange-like portion which traverses the heat insulating layer and is fluid-tightly connected to the hull structure.
Inventors
- 👤 Katsuro Yamamoto
- 👤 Toru Sato
- 👤 Kenzi Ogino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:21
CPC Classifications
F; F17; F17C; F17C13/00; F17C13/12; F17C13/126; B; B63; B63B; B63B25/00; B63B25/02; B63B25/08; B63B25/12; B63B25/16; F17C3/00; F17C3/02; F17C3/025; F17C2201/00; F17C2201/05; F17C2201/052; F17C2203/00; F17C2203/03; F17C2223/00; F17C2223/01; F17C2223/0146; F17C2223/0153; F17C2223/0161; F17C2260/00; F17C2260/03; F17C2260/035; F17C2260/038; F17C2260/04; F17C2260/044; F17C2270/00; F17C2270/01; F17C2270/0102; F17C2270/0105; F17C2270/0107; Y; Y10; Y10S; Y10S220/00; Y10S220/901
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
85 words
A tanker ship for carrying low temperature liquefied gases, comprising a hull structure, a compression resistant heat insulating layer provided inside said hull structure, and an inner membraneous vessel provided inside said heat insulating layer, characterized by a secondary barrier wall which covers a bottom portion and at least a lower side wall portion of said inner membraneous vessel, said secondary barrier wall having an outwardly bent flange-like upper edge portion which traverses said heat insulating layer and is fluid-tightly connected to said hull structure.
Claim 2
Dependent Claim
85 words
A tanker ship for carrying low temperature liquefied gases, comprising a hull structure, a compression resistant heat insulating layer provided inside said hull structure, and an inner membraneous vessel provided inside said heat insulating layer, characterized by a secondary barrier wall which covers a bottom portion and at least a lower side wall portion of said inner membraneous vessel, said secondary barrier wall having an outwardly bent flange-like upper edge portion which traverses said heat insulating layer and is fluid-tightly connected to said hull structure.
Claim 3
Dependent Claim
40 words
A tanker ship according to claim 1, further comprising means for detecting leakage of said secondary barrier wall, said means including a gas extracting tube which opens toward a space confined by said hull structure and said secondary barrier wall.
Claim 4
Dependent Claim
48 words
A tanker ship according to claim 2, wherein said gas extracting tube is selectively opened toward a second space confined by said hull structure and said inner membraneous vessel, said second space being separated from the first-mentioned space confined by said hull structure and said secondary barrier wall.
Claim 5
Dependent Claim
29 words
A tanker ship according to claim 1, wherein said flange-like upper edge portion of the secondary barrier wall includes a corrugated portion to allow for expansion or contraction thereof.
Claim 6
Dependent Claim
37 words
A tanker ship according to claim 1, wherein an outer edge portion of said flange-like upper edge portion of the secondary barrier wall is bent substantially at right angle to a main portion of said flange-like portion.
Claim 7
Dependent Claim
31 words
A tanker ship according to claim 1, wherein said flange-like upper edge portion of the secondary barrier wall is bound with a relatively soft layer for easier expansion or contraction thereof.
Claim 8
Dependent Claim
31 words
A tanker ship according to claim 1, wherein said flange-like upper edge portion of the secondary barrier wall is supported by a smooth plate member for easier expansion or contraction thereof.
References Cited (Backward Citations)
US2782956A
Cited
US2991906A
Cited
US3339779A
Cited
US3267685A
Cited
US3347402A
Cited
US3312076A
Cited
US3692205A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-04-06 | 1979-10-06 | 1980-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-04-06 | 1983-10-06 | 1984-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-04-06 | 1987-10-06 | 1988-04-06 | $7700.00 | Window Closed / Lapsed |