US3133796A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite aluminum material
Assignee: Reynolds Metals Co
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Filing: 1961-07-19
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Granted: 1964-05-19
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Expires: 1981-07-19
Abstract
No abstract record available.
Inventors
- 👤 Jr Howard Lee Craig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:00
CPC Classifications
B; B32; B32B; B32B15/00; B32B15/01; B32B15/016; C; C23; C23F; C23F13/00; C23F13/02; C23F13/06; C23F13/08; C23F13/12; C23F13/14; C23F13/16; F; F24; F24H; F24H1/00; F24H1/18; F24H1/181; F24H1/183; F24H9/00; F24H9/40; F24H9/45; F24H9/455; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9265; Y10S428/933; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12736; Y10T428/12764
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
A COMPOSITE ALUMINUM-BASE METAL EXHIBITING SUPERIOR CORROSION RESISTANCE, COMPRISING AN ALUMINUM ALLOY CORE AND A CLADDING ON AT LEAST ONE FACE OF THE CORE, THE CORE BEING COMPOSED OF AN ALUMINUM-MAGNESIUM-SILICON ALLOY CONSISTING ESSENTIALLY OF ABOUT 0.6-1.2% COPPER, UP TO ABOUT 1.5% MAGNESIUM AND UP TO ABOUT 1.8% SILICON, BALANCE SUBSTANTIALLY ALUMINUM, SAID CORE ALLOY BEING FURTHER CHARACTERIZED BY HAVING A SOLUTION POTENTIAL OF ABOUT -0.8 VOLT, AND THE CLADDING CONSISTING ESSENTIALLY OF ALUMINUM ALLOYED WITH ABOUT 1% ZINC, THE DIFFERENCE IN SOLUTION POTENTIAL BETWEEN THE CLADDING AND THE CORE BEING SUFFICIENT THAT THE CLADDING REMAINS ANODIC TO THE CORE DURING KPROLONGED EXPOSURE OF THE COMPOSITE TO SUPPLY WATER, SAID CLADDING THEREBY PROVIDING SACRIFICIAL PROTECTION OF THE CORE.
Claim 2
Dependent Claim
118 words
A COMPOSITE ALUMINUM-BASE METAL EXHIBITING SUPERIOR CORROSION RESISTANCE, COMPRISING AN ALUMINUM ALLOY CORE AND A CLADDING ON AT LEAST ONE FACE OF THE CORE, THE CORE BEING COMPOSED OF AN ALUMINUM-MAGNESIUM-SILICON ALLOY CONSISTING ESSENTIALLY OF ABOUT 0.6-1.2% COPPER, UP TO ABOUT 1.5% MAGNESIUM AND UP TO ABOUT 1.8% SILICON, BALANCE SUBSTANTIALLY ALUMINUM, SAID CORE ALLOY BEING FURTHER CHARACTERIZED BY HAVING A SOLUTION POTENTIAL OF ABOUT -0.8 VOLT, AND THE CLADDING CONSISTING ESSENTIALLY OF ALUMINUM ALLOYED WITH ABOUT 1% ZINC, THE DIFFERENCE IN SOLUTION POTENTIAL BETWEEN THE CLADDING AND THE CORE BEING SUFFICIENT THAT THE CLADDING REMAINS ANODIC TO THE CORE DURING KPROLONGED EXPOSURE OF THE COMPOSITE TO SUPPLY WATER, SAID CLADDING THEREBY PROVIDING SACRIFICIAL PROTECTION OF THE CORE.
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) | 1967-05-19 | 1967-11-18 | 1968-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-19 | 1971-11-18 | 1972-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-19 | 1975-11-18 | 1976-05-19 | $7700.00 | Window Closed / Lapsed |