US3859059A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Erosion-corrosion resistant aluminum radiator clad tubing
Assignee: Olin Corp
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Filing: 1974-02-04
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Granted: 1975-01-07
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Expires: 1994-02-04
Abstract
Abstract A composite aluminum article having increased resistance to erosion corrosion in aqueous environments comprising an aluminum base alloy cladding consisting essentially of 0.8 to 1.3% zinc, 0.7% maximum silicon plus iron, 0.10% maximum copper, 0.10% maximum manganese, 0.10% maximum magnesium, balance essentially aluminum, bonded to at least one side of an aluminum base alloy core consisting essentially of manganese from 1.0 to 1.5% chromium from 0.1 to 0.4% copper from 0.05 to 0.4%, balance essentially aluminum.
Inventors
- 👤 William H Anthony
- 👤 James M Popplewell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:13
CPC Classifications
B; B32; B32B; B32B15/00; B32B15/01; B32B15/016; C; C22; C22C; C22C21/00; F; F01; F01P; F01P11/00; F01P11/06; F28; F28F; F28F21/00; F28F21/08; F28F21/081; F28F21/084; F28F21/089; F01P2011/066; Y; Y10; Y10S; Y10S165/00; Y10S165/454; Y10S165/471; Y10S165/486; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12736; Y10T428/12764
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
74 words
A COMPOSITE METAL ARTICLE HAVING IMPROVED RESISTANCE TO EROSION CORROSION IN AQUIOUS ENVIROMENTS COMPRISING AN ALUMINUM.BASE ALLOY CLADDING CONSISTING ESSENTIALLY TO 0.8 TO 1.3% ZINC, 0.10% MAXIMUN SILICON PLUS IRON,0.10% MAXIMUN COPPER, 0.10% MAXIMUN MAGANESE, 0.10% MAXIMUN MAGNESIUM, BALANCE ESSENTIALLY ALUMINUN BONDED TO AT LEAST ONE SIDE OF AN ALUMINUM BASE ALLOY CORE CONSISTING ESENTIALLY OF MAGANESE FROM 1.0 TO 1.5% CHROMIUM FROM 0.1 TO 0.4% COPPER FROM 0.05 TO 0.4%, BALANCE ESSENTIALLY ALUMINIM.
Claim 2
Dependent Claim
74 words
A COMPOSITE METAL ARTICLE HAVING IMPROVED RESISTANCE TO EROSION CORROSION IN AQUIOUS ENVIROMENTS COMPRISING AN ALUMINUM.BASE ALLOY CLADDING CONSISTING ESSENTIALLY TO 0.8 TO 1.3% ZINC, 0.10% MAXIMUN SILICON PLUS IRON,0.10% MAXIMUN COPPER, 0.10% MAXIMUN MAGANESE, 0.10% MAXIMUN MAGNESIUM, BALANCE ESSENTIALLY ALUMINUN BONDED TO AT LEAST ONE SIDE OF AN ALUMINUM BASE ALLOY CORE CONSISTING ESENTIALLY OF MAGANESE FROM 1.0 TO 1.5% CHROMIUM FROM 0.1 TO 0.4% COPPER FROM 0.05 TO 0.4%, BALANCE ESSENTIALLY ALUMINIM.
Claim 3
Dependent Claim
19 words
A composite metal article according to claim 1 wherein said cladding is bonded to opposing sides of said core.
Claim 4
Dependent Claim
35 words
A composite metal article according to claim 1 wherein said cladding contains up to 0.7% silicon plus iron, up to 0.1% copper, up to 0.1% manganese, up to 0.1% magnesium, others 0.05% each, total 0.15%.
Claim 5
Dependent Claim
30 words
A composite metal article according to claim 1 wherein said core contains up to 0.6% silicon, up to 0.7% iron, up to 0.1% zinc, and others 0.05% each, total 0.15%.
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) | 1978-01-06 | 1978-07-08 | 1979-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-06 | 1982-07-08 | 1983-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-06 | 1986-07-08 | 1987-01-07 | $7700.00 | Window Closed / Lapsed |