US3850585A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite article
Assignee: Reynolds Metals Co
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Filing: 1972-12-18
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Granted: 1974-11-26
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Expires: 1992-12-18
Abstract
Abstract An alclad sheet product, suitable for porcelain enameling, having an aluminous metal cladding layer of 3003 alloy, for example, and an adjoining layer of an aluminum base alloy containing about 2 to 3 percent copper, up to about 0.4 percent manganese, and about 0.2 to 0.6 percent magnesium.
Inventors
- 👤 T Webb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:26
CPC Classifications
B; B32; B32B; B32B15/00; B32B15/01; B32B15/016; A; A47; A47J; A47J36/00; A47J36/02; H; H05; H05K; H05K1/00; H05K1/02; H05K1/03; H05K1/05; H05K1/053; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9265; Y10S428/931; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12736; Y10T428/12764
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
38 words
A CLAD ARTICLE HAVING A CLADDING OF 1,100 ALUMINUM ON A CORE ALLOY CONSISTING ESSENTIALLY OF ALUMINUM, ABOUT 2 TO 3 PERCENT COPPER, ABOUT 0.2 TO 0.6 PERCENT MAGNESIUM AND UP TO ABOUT 0.4 PERCENT MANGANESE BY WEIGHT.
Claim 2
Dependent Claim
38 words
A CLAD ARTICLE HAVING A CLADDING OF 1,100 ALUMINUM ON A CORE ALLOY CONSISTING ESSENTIALLY OF ALUMINUM, ABOUT 2 TO 3 PERCENT COPPER, ABOUT 0.2 TO 0.6 PERCENT MAGNESIUM AND UP TO ABOUT 0.4 PERCENT MANGANESE BY WEIGHT.
Claim 3
Dependent Claim
38 words
A clad article having a cladding of 3,003 alloy on a core alloy consisting essentially of aluminum, about 2 to 3 percent copper, about 0.2 to 0.6 percent magnesium and up to about 0.4 percent manganese by weight.
Claim 4
Dependent Claim
38 words
A clad article having a cladding of 3,003 alloy on a core alloy consisting essentially of aluminum, about 2 to 3 percent copper, about 0.2 to 0.6 percent magnesium and up to about 0.4 percent manganese by weight.
Claim 5
Dependent Claim
55 words
Type PE36 porcelain enameling sheet comprising an aluminum base alloy core consisting essentially of aluminum, 2.2 to 3.0 percent copper, 0.3 to 0.6 percent magnesium and 0.10 to 0.40 percent manganese by weight; and a cladding of alloy 3,003 that is anodic to said core alloy and effective cooperatively therewith to avoid exfoliation and blistering.
Claim 6
Dependent Claim
55 words
Type PE36 porcelain enameling sheet comprising an aluminum base alloy core consisting essentially of aluminum, 2.2 to 3.0 percent copper, 0.3 to 0.6 percent magnesium and 0.10 to 0.40 percent manganese by weight; and a cladding of alloy 3,003 that is anodic to said core alloy and effective cooperatively therewith to avoid exfoliation and blistering.
Claim 7
Dependent Claim
10 words
A cooking utensil made of sheet according to claim 3.
Claim 8
Dependent Claim
72 words
An article comprising a clad composite having a cladding layer composed of aluminum base alloy 3,003, and an adjoining core layer of an alloy consisting essentially of aluminum, about 2.2 to 3 percent copper, about 0.10 to 0.40 percent manganese and about 0.30 to 0.6 percent magnesium, by weight, with incidental elements and impurities not exceeding 0.8 percent silicon, 0.7 percent iron, 0.1 percent chromium, 0.25 percent zinc and 0.2 percent titanium.
Claim 9
Dependent Claim
72 words
An article comprising a clad composite having a cladding layer composed of aluminum base alloy 3,003, and an adjoining core layer of an alloy consisting essentially of aluminum, about 2.2 to 3 percent copper, about 0.10 to 0.40 percent manganese and about 0.30 to 0.6 percent magnesium, by weight, with incidental elements and impurities not exceeding 0.8 percent silicon, 0.7 percent iron, 0.1 percent chromium, 0.25 percent zinc and 0.2 percent titanium.
Claim 10
Dependent Claim
10 words
The article of claim 5 in the form of sheet.
Claim 11
Dependent Claim
19 words
The article of claim 5 in the form of sheet, having said cladding on both sides of the sheet.
References Cited (Backward Citations)
US1975105A
Cited
US1865089A
Cited
US1805448A
Cited
US2122535A
Cited
US3400450A
Cited
US3482951A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-11-25 | 1978-05-27 | 1978-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-25 | 1982-05-27 | 1982-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-25 | 1986-05-27 | 1986-11-26 | $7700.00 | Window Closed / Lapsed |