US3342565A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aluminium base clad with a magnesiumsilicon-aluminium alloy
Assignee: British Aluminum Co Ltd
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Filing: 1966-03-01
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Granted: 1967-09-19
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Expires: 1986-03-01
Abstract
No abstract record available.
Inventors
- 👤 Munday John Worthington
- 👤 Tomlinson Jeffrey Ernest
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 01:33
CPC Classifications
C; C22; C22F; C22F1/00; C22F1/04; B; B32; B32B; B32B15/00; B32B15/01; B32B15/016; C22C; C22C21/00; C22C21/06; C22C21/08; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/923; Y10S428/924; Y10S428/925; Y10T; Y10T428/00; Y10T428/12; Y10T428/12465; Y10T428/12486; Y10T428/12493; Y10T428/12736; Y10T428/12764
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
126 words
A CLAD ALUMINUM ALLOY MATERIAL CHARACTERISED BY PROOF STRESS, TENSILE STRENGTH AND CREEP RESISTANCE AT ELEVATED TEMPERATURES OF THE ORDER OF 150*C. COMPRISING A CORE OF A HEAT-TREATABLE ALUMINUM ALLOY HAVING A GRAIN SIZE COARSER THAN 600/750/1000 GRAINS PER LINEAR INCH IN THE THREE MUTUALLY PERPENDICULAR DIRECTIONS OF LENGTHWISE OF THE SHEET, WIDTH OF THE SHEET AND THICKNESS OF THE SHEET RESPECTIVELY, AND A CLADDING ON AT LEAST ONE FACE OF THE CORE HAVING A STRENGTH APPROACHING THAT OF THE CORE MATERIAL, THEREBY IMPROVING THE FATIGUE STRENGTH OF THE COMPOSITE MATERIAL, WHICH CLADDING IS COMPOSED OF ALUMINUM ALLOYED WITH FROM 0.4-1.5% MAGNESIUM, 0.31.3% SILICON, 0-1.5% ZINC AND A TOTAL OF 0-1% OF AT LEAST ONE OF THE ELEMENTS MANGANESE AND CHORIUM, ALL PERCENTAGES BEING BY WEIGHT.
Claim 2
Dependent Claim
126 words
A CLAD ALUMINUM ALLOY MATERIAL CHARACTERISED BY PROOF STRESS, TENSILE STRENGTH AND CREEP RESISTANCE AT ELEVATED TEMPERATURES OF THE ORDER OF 150*C. COMPRISING A CORE OF A HEAT-TREATABLE ALUMINUM ALLOY HAVING A GRAIN SIZE COARSER THAN 600/750/1000 GRAINS PER LINEAR INCH IN THE THREE MUTUALLY PERPENDICULAR DIRECTIONS OF LENGTHWISE OF THE SHEET, WIDTH OF THE SHEET AND THICKNESS OF THE SHEET RESPECTIVELY, AND A CLADDING ON AT LEAST ONE FACE OF THE CORE HAVING A STRENGTH APPROACHING THAT OF THE CORE MATERIAL, THEREBY IMPROVING THE FATIGUE STRENGTH OF THE COMPOSITE MATERIAL, WHICH CLADDING IS COMPOSED OF ALUMINUM ALLOYED WITH FROM 0.4-1.5% MAGNESIUM, 0.31.3% SILICON, 0-1.5% ZINC AND A TOTAL OF 0-1% OF AT LEAST ONE OF THE ELEMENTS MANGANESE AND CHORIUM, ALL PERCENTAGES BEING BY WEIGHT.
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) | 1970-09-18 | 1971-03-20 | 1971-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-18 | 1975-03-20 | 1975-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-18 | 1979-03-20 | 1979-09-19 | $7700.00 | Window Closed / Lapsed |