Patent US4137102A successfully refreshed from Google Patents.
US4137102A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aluminum alloy products of high corrosion resistance and deformability
Assignee: GEA Group AG
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Filing: 1976-06-29
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Granted: 1979-01-30
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Expires: 1996-06-29
Abstract
Abstract In the fabrication of an exhaust system of an internal-combustion engine, a tube-bank heat exchanger, a ducted-plate solar collector, saline water reclamation plant and enameled kitchenware, the improvement which comprises the use of a wrought aluminum alloy consisting essentially of: 0.8 to 2.2% by weight manganese, 0.1 to 0.5% by weight zirconium, 0 to 1.0% by weight iron, 0 to 0.6% by weight silicon, 0 to 0.5% by weight copper, 0 to 0.1% by weight magnesium, Balance aluminum and unavoidable impurities.
Inventors
- 👤 Jurgen Althoff
- 👤 Kurt Jager
- 👤 Heinz Lommel
- 👤 Manfred Moller
- 👤 Manfred Potzschke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 20:49
CPC Classifications
A; A47; A47J; A47J36/00; A47J36/02; C; C22; C22C; C22C21/00; C22F; C22F1/00; C22F1/04; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
105 words
A part subject to corrosion which is constituted of a wrought aluminum alloy which is composed, on a weight basis, of 0.8 to 2.2% manganese 0.1 to 0.5% zirconium 0.2 to 0.7% iron 0.2 to 0.6% silicon 0 to 0.5% copper 0 to max. 0.1% magnesium balance aluminum and inevitable impurities which are due to the manufacture, said alloy having been subjected after casting to a temperature of 450° C to 500° C for a period of 5 to 10 hours and hot and cold working so as to have the characteristics of good deformability, resistance to corrosion, and a recrystallization temperature above 400° C.
Claim 2
Dependent Claim
105 words
A part subject to corrosion which is constituted of a wrought aluminum alloy which is composed, on a weight basis, of 0.8 to 2.2% manganese 0.1 to 0.5% zirconium 0.2 to 0.7% iron 0.2 to 0.6% silicon 0 to 0.5% copper 0 to max. 0.1% magnesium balance aluminum and inevitable impurities which are due to the manufacture, said alloy having been subjected after casting to a temperature of 450° C to 500° C for a period of 5 to 10 hours and hot and cold working so as to have the characteristics of good deformability, resistance to corrosion, and a recrystallization temperature above 400° C.
Claim 3
Dependent Claim
42 words
The part defined in claim 1 wherein said wrought aluminum alloy contains zirconium in a range of 0.1 to 0.35% by weight, said part being a kitchen utensil coated with vitreous enamel and resistant to corrosion and having a high buckling strength.
Claim 4
Dependent Claim
22 words
The part defined in claim 2 wherein said wrought aluminum alloy is free from copper and contains max. 0.02% by weight magnesium.
Claim 5
Dependent Claim
40 words
The part defined in claim 1 wherein said wrought aluminum alloy has a loss of strength upon deformation at 400° C which is less than 50% of the difference in strength between the hard and soft state of the material.
Claim 6
Dependent Claim
53 words
The part defined in claim 1 wherein said wrought aluminum alloy consists, on a weight basis, of 1.2 to 1.8% manganese 0.15 to 0.30% zirconium 0.2 to 0.7% iron 0.2 to 0.4% silicon 0 to 0.3% copper 0 to max. 0.1% magnesium balance aluminum and inevitable impurities which are due to the manufacture.
Claim 7
Dependent Claim
25 words
The part defined in claim 1 wherein said wrought aluminum alloy consists, on a weight basis, of 1.4% to 1.6% manganese 0.2 to 0.3% zirconium
Claim 8
Dependent Claim
28 words
4 to 0.6% iron 0.2 to 0.4% silicon 0 to 0.1% copper 0 to max. 0.17% magnesium balance aluminum and inevitable impurities which are due to the manufacture.
Claim 9
Dependent Claim
28 words
4 to 0.6% iron 0.2 to 0.4% silicon 0 to 0.1% copper 0 to max. 0.17% magnesium balance aluminum and inevitable impurities which are due to the manufacture.
Claim 10
Dependent Claim
85 words
A wrought aluminum alloy which has been cast and subjected after casting to a temperature of 450° C to 500° C for 5 to 10 hours and hot and cold working, said alloy having a recrystallization temperature above 400° C and consisting essentially of: 0.8 to 2.2% by weight manganese, 0.1 to 0.5% by weight zirconium, 0.2 to 1.0% by weight iron, 0.2 to 0.6% by weight silicon 0 to 0.5% by weight copper, 0 to 0.1% by weight magnesium, balance aliminum and unavoidable impurities.
Claim 11
Dependent Claim
85 words
A wrought aluminum alloy which has been cast and subjected after casting to a temperature of 450° C to 500° C for 5 to 10 hours and hot and cold working, said alloy having a recrystallization temperature above 400° C and consisting essentially of: 0.8 to 2.2% by weight manganese, 0.1 to 0.5% by weight zirconium, 0.2 to 1.0% by weight iron, 0.2 to 0.6% by weight silicon 0 to 0.5% by weight copper, 0 to 0.1% by weight magnesium, balance aliminum and unavoidable impurities.
Claim 12
Dependent Claim
14 words
The alloy defined in claim 7 which contains 0.1 to 0.35% by weight zirconium.
Claim 13
Dependent Claim
49 words
The alloy defined in claim 7 which consists of: 1.2 to 1.8% by weight manganese, 0.15 to 0.30% by weight zirconium, 0.2 to 0.7% iron, 0.2 to 0.4% silicon, 0 to 0.3% copper, 0 to max. 0.1% magnesium, balance aluminum and inevitable impurities which are due to the manufacture.
Claim 14
Dependent Claim
57 words
The alloy defined in claim 7 which consists of: 1.4% to 1.6% by weight manganese, 0.2 to 0.3% by weight zirconium, 0.4 to 0.6% by weight iron, 0.2 to 0.4% by weight silicon, 0 to 0.1% by weight copper 0 to max. 0.1% by weight magnesium, balance aluminum and inevitable impurities which are due to the manufacture.
References Cited (Backward Citations)
US1830142A
Cited
US3219492A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-01-29 | 1982-07-31 | 1983-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-01-29 | 1986-07-31 | 1987-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-01-29 | 1990-07-31 | 1991-01-30 | $7700.00 | Window Closed / Lapsed |