Patent US3419174A successfully refreshed from Google Patents.
US3419174A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for liquefied gas storage
Assignee: Chicago Bridge and Iron Co
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Filing: 1963-07-18
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Granted: 1968-12-31
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Expires: 1983-07-18
Abstract
No abstract record available.
Inventors
- 👤 Gerald E Engdahl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:39
CPC Classifications
F; F17; F17C; F17C3/00; F17C3/02; F17C3/022; F17C2203/00; F17C2203/06; F17C2203/0634; F17C2203/0678; Y; Y10; Y10S; Y10S220/00; Y10S220/901
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
AN ENCLOSED ORYOGENIC STORAGE TANK COMPRISING AN INSULATED BOTTOM WITH A SUBSTANTIALLY VERTICAL INSULATED WALL PROJECTING UPWARDLY THEREFROM AROUND THE PERIPHERY OF THE BOTTOM, A NONINSULATED METAL ROOF PROJECTING TO THE WALL AND COMPLETELY COVERING THE SPACE SURROUNDED BY THE WALL, SAID ROOF HAVING A VAPOR OPENING AN INSULATED FLOATING COVER INSIDE THE TANK, SAID COVER HAVING A SURFACE SHAPE COMPLEMENTARY TO THE INTERIOR OF THE TANK IN HORIZONTAL SECTION WITH THE PERIPHERAL EDGE OF THE COVER BEING ADJACENT THE WALL SURFACE INSIDE THE TANK TO PERMIT FREE VERTICAL MOVEMENT OF THE COVER WHILE FLOATING ON, AND COVERING SUBSTANTIALLY THE TOTAL SURFACE OF, A CRYOGENIC LIQUID WHEN PLACED IN THE TANK, AND AN OPENING IN THE TANK FOR FILLING THE TANK WITH A CRYOGENIC LIQUID.
Claim 2
Dependent Claim
125 words
AN ENCLOSED ORYOGENIC STORAGE TANK COMPRISING AN INSULATED BOTTOM WITH A SUBSTANTIALLY VERTICAL INSULATED WALL PROJECTING UPWARDLY THEREFROM AROUND THE PERIPHERY OF THE BOTTOM, A NONINSULATED METAL ROOF PROJECTING TO THE WALL AND COMPLETELY COVERING THE SPACE SURROUNDED BY THE WALL, SAID ROOF HAVING A VAPOR OPENING AN INSULATED FLOATING COVER INSIDE THE TANK, SAID COVER HAVING A SURFACE SHAPE COMPLEMENTARY TO THE INTERIOR OF THE TANK IN HORIZONTAL SECTION WITH THE PERIPHERAL EDGE OF THE COVER BEING ADJACENT THE WALL SURFACE INSIDE THE TANK TO PERMIT FREE VERTICAL MOVEMENT OF THE COVER WHILE FLOATING ON, AND COVERING SUBSTANTIALLY THE TOTAL SURFACE OF, A CRYOGENIC LIQUID WHEN PLACED IN THE TANK, AND AN OPENING IN THE TANK FOR FILLING THE TANK WITH A CRYOGENIC LIQUID.
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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) | 1971-12-31 | 1972-07-01 | 1972-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-31 | 1976-07-01 | 1976-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-31 | 1980-07-01 | 1980-12-31 | $7700.00 | Window Closed / Lapsed |