US3581931A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Storage tank of cold liquefied gas
Assignee: Eneos Globe Corp
•
Filing: 1969-11-25
•
Granted: 1971-06-01
•
Expires: 1989-11-25
Abstract
Abstract A storage tank of cold liquefied gas, which comprises an outer shell, an inner membrane tank, and a heat-insulating layer inserted between the outer shell and the inner membrane tank. The heat-insulating layer consists of a body made of first material and blocks made of second material buried in the body. Thereby, excellent mechanical strength and heat insulation can be achieved with a comparatively thin heat-insulating layer.
Inventors
- 👤 Katsuro Yamamoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 03:06
CPC Classifications
F; F17; F17C; F17C3/00; F17C3/02; F17C3/025; F17C13/00; F17C13/001; F17C2203/00; F17C2203/03; F17C2203/0304; F17C2203/0329; F17C2203/0337; F17C2203/0341; F17C2203/06; F17C2203/0634; F17C2203/0636; F17C2203/0678; F17C2223/00; F17C2223/01; F17C2223/0146; F17C2223/0153; F17C2223/03; F17C2223/033; F17C2260/00; F17C2260/01; F17C2260/011; F17C2260/03; F17C2260/031; F17C2260/033
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
56 words
A storage tank according to claim 1, wherein said blocks made of the second heat-insulating material are so disposed in the body of the heat-insulating layer that no heat leaks through the heat-insulating layer along a rectilinear path, which is normal to the wall of the outer shell, without encountering at least one of said blocks.
Claim 2
Dependent Claim
27 words
A storage tank according to claim 1, wherein each of the blocks of the heat-insulating layer is an elongated flattened plate with a substantially rectangular cross section.
Claim 3
Dependent Claim
32 words
A storage tank according to claim 1, wherein said blocks of the heat-insulating layer are in the form a plurality of cylinders made of the second heat-insulating material buried in the body.
Claim 4
Dependent Claim
26 words
A storage tank according to claim 4, wherein said cylindrical blocks of the heat-insulating layer are disposed in parallel with the wall of the outer shell.
Claim 5
Dependent Claim
19 words
A storage tank according to claim 1, wherein said body of the heat-insulating layer is made of foamed concrete.
Claim 6
Dependent Claim
19 words
A storage tank according to claim 1, wherein said body of the heat-insulating layer is made of pearlite concrete.
Claim 7
Dependent Claim
30 words
A storage tank according to claim 1, wherein each of said blocks of the heat-insulating layer consists of a cylinder made of cardboard and pearlite powder filling up the cylinder.
Claim 8
Dependent Claim
22 words
A storage tank according to claim 1, wherein the second heat-insulating material for the blocks of the heat-insulating layer is polystyrene foam.
Claim 9
Dependent Claim
21 words
A storage tank according to claim 1, wherein the second heat-insulating material for the blocks of the heat-insulating layer is air.
Claim 10
Dependent Claim
21 words
A storage tank according to claim 1, wherein said blocks in the body of the heat-insulating layer consist of evacuated cavities.
Claim 11
Dependent Claim
30 words
A storage tank according to claim 1, wherein said inner membrane tank consists of corrugated metal sheets being contiguous to the inner surface of the body of the heat-insulating layer.
Claim 12
Dependent Claim
20 words
A storage tank according to claim 1, wherein said protective screenlike member in the heat-insulating layer is a metallic screen.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-31 | 1974-11-30 | 1975-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-31 | 1978-11-30 | 1979-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-31 | 1982-11-30 | 1983-06-01 | $7700.00 | Window Closed / Lapsed |