Patent US3570700A successfully refreshed from Google Patents.
US3570700A
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US
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Low temperature liquefied gas storage tank
Assignee: Eneos Globe Corp
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Filing: 1968-11-20
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Granted: 1971-03-16
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Expires: 1988-11-20
Abstract
Abstract A low-temperature liquefied gas storage tank comprising an outer tank made of rigid metals and an inner tank having a thin film construction. The inner tank is provided at its upstanding peripheral inside surface with vertically extending corrugations and includes means for suspending its upper peripheral edge so as to permit contraction and expansion of the inner tank when it is subjected to a liquid load or exposed to a low temperature. The inner tank prevents undesirable cracking and damage thereof and can store the low-temperature liquefied gas in a safe manner.
Inventors
- 👤 Katsuro Yamamoto
- 👤 Kuniyoshi Obata
- 👤 Shinji Nakagawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:31
CPC Classifications
F; F17; F17C; F17C3/00; F17C3/02; F17C3/022; F17C3/025; F17C3/027; F17C2201/00; F17C2201/01; F17C2201/0104; F17C2201/0109; F17C2201/0119; F17C2201/03; F17C2201/032; F17C2201/05; F17C2201/052; F17C2203/00; F17C2203/03; F17C2203/0304; F17C2203/0345; F17C2203/035; F17C2203/0354; F17C2203/06; F17C2203/0634; F17C2203/0636; F17C2203/0639; F17C2203/0646; F17C2203/0648; F17C2221/00; F17C2221/03; F17C2221/032; F17C2221/033; F17C2223/00; F17C2223/01; F17C2223/0146; F17C2223/0153; F17C2223/0161; F17C2223/03; F17C2223/033; F17C2260/00; F17C2260/01; F17C2260/011; Y; Y10; Y10S; Y10S220/00; Y10S220/901
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
59 words
A liquefied gas storage tank as claimed in claim 1 wherein said suspension means comprises a plurality of rocking levers pivotably connected to said top cover plate, weight means at one end of each of said levers to counterbalance said inner tank, and said upper periphery of said inner tank being connected to the other ends of said levers.
Claim 2
Dependent Claim
32 words
A liquefied gas storage tank as claimed in claim 1 wherein said suspension means comprises a plurality of spring means connecting said upper periphery of said inner tank to said top structure.
Claim 3
Dependent Claim
56 words
A liquefied gas storage tank as claimed in claim 1 wherein said suspension means comprises a plurality of pulleys attached to said top structure and weight means, each of said weight means being attached to a line, and each line passing over at least one pulley and connecting to said upper periphery of said inner tank.
Claim 4
Dependent Claim
40 words
A liquefied gas storage tank as claimed in claim 1 wherein said corrugations are constituted by a slightly curved camber adapted to be deformed into substantially a circular form in horizontal section upon being subjected to a low-temperature liquid load.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-03-15 | 1974-09-14 | 1975-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-15 | 1978-09-14 | 1979-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-15 | 1982-09-14 | 1983-03-16 | $7700.00 | Window Closed / Lapsed |