US2719583A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel tank for aircraft
Assignee: Phillips Petroleum Co
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Filing: 1951-01-02
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Granted: 1955-10-04
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Expires: 1971-01-02
Abstract
No abstract record available.
Inventors
- 👤 Emil A Malick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:55
CPC Classifications
B; B64; B64D; B64D37/00; B64D37/34; Y; Y10; Y10T; Y10T137/00; Y10T137/2931; Y10T137/3115; Y10T137/3127; Y10T137/313; Y10T137/4673; Y10T137/4824; Y10T137/8593; Y10T137/86187; Y10T137/86228
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
152 words
AN AIRPLANE FUEL TANK WHICH COMPRISES AN OUTER SHELL, A POROUS INNER CELL INSIDE SAID OUTER SHELL AND SECURED TO SAID OUTER SHELL SO AS TO FORM AND ANNULAR SPACE BETWEEN SAID POROUS CELL AND SAID OUTER SHELL, SAID POROUS CELL BEING OF SUCH SIZE, WITH RESPECT TO THE SIZE OF SAID OUTER SHELL, AS TO PROVIDE THE MAJOR STORAGE SPACE FOR FUEL IN SAID TANK, THE POROSITY OF THE INNER CELL BEING SUCH THAT THE FLOW OF VAPOR FROM WITHIN THE INNER CELL TO WITHIN THE OUTER SHELL IS RESTRAINED TO CREATE A BUILD-UP IN PRESSURE IN THE INNER CELL THEREBY RETARDING THE RATE OF VAPOR FORMATION, A VENT IN SAID OUTER SHELL FOR VENTING SAID ANNULAR SPACE, A FUEL INLET CONDUIT EXTENDING THROUGH SAID OUTER SHELL AND INTO SAID INNER POROUS CELL FOR FILLING SAID FUEL TANK, AND MEANS FOR WITHDRAWING FUEL FROM SAID POROUS CELL IN SAID FUEL TANK.
Claim 2
Dependent Claim
152 words
AN AIRPLANE FUEL TANK WHICH COMPRISES AN OUTER SHELL, A POROUS INNER CELL INSIDE SAID OUTER SHELL AND SECURED TO SAID OUTER SHELL SO AS TO FORM AND ANNULAR SPACE BETWEEN SAID POROUS CELL AND SAID OUTER SHELL, SAID POROUS CELL BEING OF SUCH SIZE, WITH RESPECT TO THE SIZE OF SAID OUTER SHELL, AS TO PROVIDE THE MAJOR STORAGE SPACE FOR FUEL IN SAID TANK, THE POROSITY OF THE INNER CELL BEING SUCH THAT THE FLOW OF VAPOR FROM WITHIN THE INNER CELL TO WITHIN THE OUTER SHELL IS RESTRAINED TO CREATE A BUILD-UP IN PRESSURE IN THE INNER CELL THEREBY RETARDING THE RATE OF VAPOR FORMATION, A VENT IN SAID OUTER SHELL FOR VENTING SAID ANNULAR SPACE, A FUEL INLET CONDUIT EXTENDING THROUGH SAID OUTER SHELL AND INTO SAID INNER POROUS CELL FOR FILLING SAID FUEL TANK, AND MEANS FOR WITHDRAWING FUEL FROM SAID POROUS CELL IN SAID FUEL TANK.
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) | 1958-10-03 | 1959-04-04 | 1959-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-10-03 | 1963-04-04 | 1963-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-10-03 | 1967-04-04 | 1967-10-04 | $7700.00 | Window Closed / Lapsed |