Patent US3963453A successfully refreshed from Google Patents.
US3963453A
Expired / Lapsed
US
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Brazing materials
Assignee: Reynolds Metals Co
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Filing: 1974-12-10
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Granted: 1976-06-15
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Expires: 1994-12-10
Abstract
Abstract An aluminum-silicon brazing composition containing 0.05 to 0.3% tin by weight, with silicon in the range of 7 to 14% and magnesium in the range of 0.2 to 2%, preferably the composition being employed as a cladding layer on a magnesium-containing aluminum base core alloy.
Inventors
- 👤 Ogle R. Singleton, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:22
CPC Classifications
B; B32; B32B; B32B15/00; B32B15/01; B32B15/016; B23; B23K; B23K35/00; B23K35/001; B23K35/002; B23K35/22; B23K35/24; B23K35/28; B23K35/286; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/923; Y10S428/924; Y10S428/925; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12736; Y10T428/12764
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
63 words
An article which comprises an aluminum alloy core and an outer cladding layer, the outer cladding layer being bonded to one side of the aluminum alloy core and being made of an alloy consisting essentially of 7 to 14% silicon, 0.2 to 2% magnesium, 0.05 to 0.3% tin, less than 0.6% iron, 0.3% manganese and 0.15% incidental impurities, and a balance of aluminum.
Claim 2
Dependent Claim
63 words
An article which comprises an aluminum alloy core and an outer cladding layer, the outer cladding layer being bonded to one side of the aluminum alloy core and being made of an alloy consisting essentially of 7 to 14% silicon, 0.2 to 2% magnesium, 0.05 to 0.3% tin, less than 0.6% iron, 0.3% manganese and 0.15% incidental impurities, and a balance of aluminum.
Claim 3
Dependent Claim
33 words
The article of claim 1 wherein the aluminum alloy core consists of 0.1 to 0.3% magnesium, less than 0.25% copper, 0.3% silicon, 0.4% manganese and 0.15% incidental impurities, and a balance of aluminum.
Claim 4
Dependent Claim
43 words
The article of claim 1 wherein the aluminum alloy core consists of 0.4 to 0.8% silicon, 0.25 to 0.4% manganese, 0.4 to 0.8% magnesium less than 0.8% iron, 0.35% chromium, 0.35% copper, 0.35% zinc and 0.15% incidental impurities, and a balance of aluminum.
Claim 5
Dependent Claim
61 words
An article which comprises an aluminum alloy core and an outer cladding layer bonded to each side of the aluminum alloy core, each outer cladding layer being made of an alloy consisting essentially of 7 to 14% silicon, 0.2 to 2% magnesium, 0.05 to 0.3% tin, less than 0.6% iron, 0.3% manganese and 0.15% incidental impurities, and a balance of aluminum.
Claim 6
Dependent Claim
61 words
An article which comprises an aluminum alloy core and an outer cladding layer bonded to each side of the aluminum alloy core, each outer cladding layer being made of an alloy consisting essentially of 7 to 14% silicon, 0.2 to 2% magnesium, 0.05 to 0.3% tin, less than 0.6% iron, 0.3% manganese and 0.15% incidental impurities, and a balance of aluminum.
Claim 7
Dependent Claim
33 words
The article of claim 4 wherein the aluminum alloy core consists of 0.1 to 0.3% magnesium, less than 0.25% copper, 0.3% silicon, 0.4% manganese and 0.15% incidental impurities, and a balance of aluminum.
Claim 8
Dependent Claim
43 words
The article of claim 4 wherein the aluminum alloy core consists of 0.4 to 0.8% silicon, 0.25 to 0.4% manganese, 0.4 to 0.8% magnesium, less than 0.8% iron, 0.35% chromium, 0.35% copper, 0.35% zinc and 0.15% incidental impurities, and a balance of aluminum.
References Cited (Backward Citations)
US2075517A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-06-15 | 1979-12-15 | 1980-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-15 | 1983-12-15 | 1984-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-15 | 1987-12-15 | 1988-06-15 | $7700.00 | Window Closed / Lapsed |