Patent US3131893A successfully refreshed from Google Patents.
US3131893A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel tank for aircraft
Assignee: Bristol Aircraft Ltd
•
Filing: 1961-11-09
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Granted: 1964-05-05
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Expires: 1981-11-09
Abstract
No abstract record available.
Inventors
- 👤 Boucher Harold Thomas Charlie
- 👤 Wilde Michael George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 08:41
CPC Classifications
B; B64; B64D; B64D37/00; B64D37/02; B64D37/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
A FUEL TANK FOR AN AIRCRAFT INCLUDING A WALL WHICH IS LIABLE TO BE HEATED DURING USE, AND MEANS FOR PREVENTING AN EXCESSIVE RISE IN TEMPERATURE OF A SUBSTANTIAL VOLUME OF FUEL IN THE TANK, COMPRISING A SHROUD LYING CLOSE TO THE SAID HEATED WALL BUT IN A SLIGHTLY SPACED RELATIONSHIP WITH THE SAID WALL THROUGHOUT SUBSTANTIALLY ITS ENTIRE AREA, AND COVERING SUBSTANTIALLY THE WHOLE OF THE SAID WALL SO AS AT LEAST TO RETARD FUEL IN CONTACT WITH THE SAID WALL FROM PASSING INTO THE MAIN VOLUME OF FUEL IN THE TANK.
Claim 2
Dependent Claim
93 words
A FUEL TANK FOR AN AIRCRAFT INCLUDING A WALL WHICH IS LIABLE TO BE HEATED DURING USE, AND MEANS FOR PREVENTING AN EXCESSIVE RISE IN TEMPERATURE OF A SUBSTANTIAL VOLUME OF FUEL IN THE TANK, COMPRISING A SHROUD LYING CLOSE TO THE SAID HEATED WALL BUT IN A SLIGHTLY SPACED RELATIONSHIP WITH THE SAID WALL THROUGHOUT SUBSTANTIALLY ITS ENTIRE AREA, AND COVERING SUBSTANTIALLY THE WHOLE OF THE SAID WALL SO AS AT LEAST TO RETARD FUEL IN CONTACT WITH THE SAID WALL FROM PASSING INTO THE MAIN VOLUME OF FUEL IN THE TANK.
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) | 1967-05-05 | 1967-11-04 | 1968-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-05 | 1971-11-04 | 1972-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-05 | 1975-11-04 | 1976-05-05 | $7700.00 | Window Closed / Lapsed |