US3809155A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Erosion-corrosion resistant aluminum radiator clad tubing
Assignee: Olin Corp
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Filing: 1972-02-02
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Granted: 1974-05-07
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Expires: 1992-02-02
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 percent zinc, 0.7 percent maximum silicon plus iron, 0.10 percent maximum copper, 0.10 percent maximum manganese, 0.10 percent 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 percent, chromium from 0.1 to 0.4 percent, copper from 0.05 to 0.4 percent, balance essentially aluminum.
Inventors
- 👤 W Anthony
- 👤 J Popplewell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:36
CPC Classifications
F; F28; F28F; F28F21/00; F28F21/08; F28F21/089; B; B32; B32B; B32B15/00; B32B15/01; B32B15/016; C; C22; C22C; C22C21/00; F28F19/00; F28F19/02; F28F19/06; F28F21/081; F28F21/084; F01; F01P; F01P11/00; F01P11/06; F01P2011/066; Y; Y10; Y10S; Y10S138/00; Y10S138/06; Y10S138/11
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
17 words
A tubing according to claim 1 wherein said cladding is bonded to opposing surfaces of said core.
Claim 2
Dependent Claim
40 words
A tubing according to claim 1 wherein said cladding contains up to 0.7 percent silicon plus iron, up to 0.1 percent copper, up to 0.1 percent manganese, up to 0.1 percent magnesium and others 0.05 percent each, total 0.15 percent.
Claim 3
Dependent Claim
33 words
A tubing according to claim 1 wherein said core contains up to 0.6 percent silicon, up to 0.7 percent iron, up to 0.1 percent zinc, and others 0.05 percent each, total 0.15 percent.
Claim 4
Dependent Claim
15 words
A tubing according to claim 1 having a wall thickness from 0.010 to 0.030 inch.
Claim 5
Dependent Claim
45 words
A tubing according to claim 1 wherein said cladding is bonded to one side of said core and further having a brazing layer of a material selected from the group consisting of the AA 4XXX series alloys bonded to the opposing side of said core.
References Cited (Backward Citations)
US3530932A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-05-06 | 1977-11-05 | 1978-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-06 | 1981-11-05 | 1982-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-06 | 1985-11-05 | 1986-05-07 | $7700.00 | Window Closed / Lapsed |