US3881883A
Expired / Lapsed
US
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Clad composites and aluminous metal compositions for cladding
Assignee: Reynolds Metals Co
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Filing: 1973-11-16
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Granted: 1975-05-06
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Expires: 1993-11-16
Abstract
Abstract Composite articles having a core and cladding composed of heattreatable aluminum base alloys, in particular a core alloy containing zinc, magnesium and copper as the principal alloying elements, clad with an alloy containing about 4-5.5% zinc and about 1-1.6% magnesium; and improved cladding alloys of that type.
Inventors
- 👤 Thomas L Fritzlen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:10
CPC Classifications
C; C22; C22C; C22C21/00; C22C21/10; B; B32; B32B; B32B15/00; B32B15/01; B32B15/016; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12736; Y10T428/12764
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
49 words
AN ARTICLE COMPRISING A CLAD COMPOSITE HAVING A CORE OF ALUMINUM ALLOY 7001, AND A CLADDING COMPOSED OF AN ALLOY CONSISTING ESSENTIALLY OF ALUMINUM, ABOUT 4-5.5% ZINC AND AOUT 1-1.6% MAGNESIUM, BY WEIGHT, SAID CORE ALLOY CONSISTING ESSENTIALLY OF ALUMINUM, 6.8-8.0% ZINC, 2.6-3.4% MAGNESIUM, 2.6-2.6% COPPER AND 0.18-0.35% CHROMIUM.
Claim 2
Dependent Claim
49 words
AN ARTICLE COMPRISING A CLAD COMPOSITE HAVING A CORE OF ALUMINUM ALLOY 7001, AND A CLADDING COMPOSED OF AN ALLOY CONSISTING ESSENTIALLY OF ALUMINUM, ABOUT 4-5.5% ZINC AND AOUT 1-1.6% MAGNESIUM, BY WEIGHT, SAID CORE ALLOY CONSISTING ESSENTIALLY OF ALUMINUM, 6.8-8.0% ZINC, 2.6-3.4% MAGNESIUM, 2.6-2.6% COPPER AND 0.18-0.35% CHROMIUM.
Claim 3
Dependent Claim
51 words
An article comprising a clad composite having a core of aluminum alloy X7002, and a cladding composed of an alloy consisting essentially of aluminum, about 4-5.5% zinc and about 1-1.6% magnesium, by weight; said core alloy consisting essentially of aluminum, 3.0-4.0% zinc, 2.0-3.0% magnesium, 0.50-1.0% copper, .05-0.30% manganese and 0.10-0.30% chromium.
Claim 4
Dependent Claim
51 words
An article comprising a clad composite having a core of aluminum alloy X7002, and a cladding composed of an alloy consisting essentially of aluminum, about 4-5.5% zinc and about 1-1.6% magnesium, by weight; said core alloy consisting essentially of aluminum, 3.0-4.0% zinc, 2.0-3.0% magnesium, 0.50-1.0% copper, .05-0.30% manganese and 0.10-0.30% chromium.
Claim 5
Dependent Claim
49 words
An article comprising a clad composite having a core of aluminum alloy 7075, and a cladding composed of an alloy consisting essentially of aluminum, about 4-5.5% zinc and about 1-1.6% magnesium, by weight; said core alloy consisting essentially of aluminum, 5.1-6.1% zinc, 2.1-2.5% magnesium, 1.2-2.0% copper and 0.18-0.35% chromium.
Claim 6
Dependent Claim
49 words
An article comprising a clad composite having a core of aluminum alloy 7075, and a cladding composed of an alloy consisting essentially of aluminum, about 4-5.5% zinc and about 1-1.6% magnesium, by weight; said core alloy consisting essentially of aluminum, 5.1-6.1% zinc, 2.1-2.5% magnesium, 1.2-2.0% copper and 0.18-0.35% chromium.
Claim 7
Dependent Claim
51 words
An article comprising a clad composite having a core of aluminum alloy 7079, and a cladding composed of an alloy consisting essentially of aluminum, about 4-5.5% zinc and about 1-1.6% magnesium, by weight; said core alloy consisting essentially of aluminum, 3.8-4.8% zinc, 2.9-3.7% magnesium, 0.40-0.8% copper, 0.10-0.30% manganese and 0.10-0.25% chromium.
Claim 8
Dependent Claim
51 words
An article comprising a clad composite having a core of aluminum alloy 7079, and a cladding composed of an alloy consisting essentially of aluminum, about 4-5.5% zinc and about 1-1.6% magnesium, by weight; said core alloy consisting essentially of aluminum, 3.8-4.8% zinc, 2.9-3.7% magnesium, 0.40-0.8% copper, 0.10-0.30% manganese and 0.10-0.25% chromium.
Claim 9
Dependent Claim
49 words
An article comprising a clad composite having a core of aluminum alloy 7178, and a cladding composed of an alloy consisting essentially of aluminum, about 4-5.5% zinc and about 1-1.6% magnesium, by weight; said core alloy consisting essentially of aluminum, 6.3-7.3% zinc, 2.4-3.1% magnesium, 1.6-2.4% copper and 0.18-0.35% chromium.
Claim 10
Dependent Claim
49 words
An article comprising a clad composite having a core of aluminum alloy 7178, and a cladding composed of an alloy consisting essentially of aluminum, about 4-5.5% zinc and about 1-1.6% magnesium, by weight; said core alloy consisting essentially of aluminum, 6.3-7.3% zinc, 2.4-3.1% magnesium, 1.6-2.4% copper and 0.18-0.35% chromium.
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) | 1978-05-05 | 1978-11-04 | 1979-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-05 | 1982-11-04 | 1983-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-05 | 1986-11-04 | 1987-05-06 | $7700.00 | Window Closed / Lapsed |