US3563846A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-sealing fuel tank
Assignee: Bridgestone Firestone Inc
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Filing: 1966-08-25
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Granted: 1971-02-16
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Expires: 1986-08-25
Abstract
Abstract THIS INVENTION RELATES TO THE PROTECTION OF A FUEL TANK BY AN EXTERIOR COMPOSITE LAMINATE WHICH COMPRISES A LAYER OF FUEL-RESISTANT SPONGE 0.020 TO 0.125 INCH THICK ADHERENTLY INTERPOSED BETWEEN THE FUEL T ANK AND A SEALING LAYER. WHEN THE PROTECTED FUEL TANK OF THIS INVENTION IS PUNCTURED BY A PROJECTILE, THE SPONGE LAYER IS SPLITTABLE SO THAT THE SEALING LAYER SEPARATES FROM THE TANK WALL AROUND THE PUNCTURE AS THE PUNCTURE IS FORMED AND THE SEALING LAYER SWELLS WHEN CONTACTED BY THE FUEL.
Inventors
- 👤 George B Harr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:15
CPC Classifications
B; B60; B60K; B60K15/00; B60K15/03; B60K15/03177; B64; B64D; B64D37/00; B64D37/02; B64D37/06; B60K2015/03328; B60K2015/03407; Y; Y10; Y10S; Y10S220/00; Y10S220/90; Y10S220/905
Claims Analysis
Total Claims: 0
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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) | 1974-02-15 | 1974-08-17 | 1975-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-15 | 1978-08-17 | 1979-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-15 | 1982-08-17 | 1983-02-16 | $7700.00 | Window Closed / Lapsed |