US2681402A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of welding aluminum and aluminum alloys
Assignee: Airco Inc
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Filing: 1950-04-29
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Granted: 1954-06-15
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Expires: 1970-04-29
Abstract
No abstract record available.
Inventors
- 👤 Muller Albert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 06:41
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/23
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
A CONSUMABLE ELECTRODE METHOD OF MAKING AN ALUMINUM OR AN ALUMINUM ALLOY WELD WHICH IS SUBSTANTIALLY FREE FROM POROSITY COMPRISING FIRST TREATING AN ALUMINUM WIRE TO REMOVE THEREFROM ANY HYDROGEN-CONTAINING COMPOUND SUCH AS HYDROCARBONS AND MOISTURE, MAINTAINING THE ALUMINUM WIRE IN SUCH HYDROGEN FREE CONDITION, AND WHILE THE ALUMINUM WIRE IS STILL SUBSTANTIALLY FREE OF HYDROCARBONS AND BEFORE ANY SUBSTANTIAL AMOUNT OF MOISTURE HAS BEEN ADSORBED BY AN OXIDE FILM THEREON USING IT AS THE CONSUMABLE ELECTRODE TO ARC WELD BY MAINTAINING AN ELECTRIC ARC BETWEEN THE END OF THE WIRE AND AN ALUMINUM WORKPIECE, CONTINUOUSLY FEEDING THE ALUMINUM
Claim 2
Dependent Claim
99 words
A CONSUMABLE ELECTRODE METHOD OF MAKING AN ALUMINUM OR AN ALUMINUM ALLOY WELD WHICH IS SUBSTANTIALLY FREE FROM POROSITY COMPRISING FIRST TREATING AN ALUMINUM WIRE TO REMOVE THEREFROM ANY HYDROGEN-CONTAINING COMPOUND SUCH AS HYDROCARBONS AND MOISTURE, MAINTAINING THE ALUMINUM WIRE IN SUCH HYDROGEN FREE CONDITION, AND WHILE THE ALUMINUM WIRE IS STILL SUBSTANTIALLY FREE OF HYDROCARBONS AND BEFORE ANY SUBSTANTIAL AMOUNT OF MOISTURE HAS BEEN ADSORBED BY AN OXIDE FILM THEREON USING IT AS THE CONSUMABLE ELECTRODE TO ARC WELD BY MAINTAINING AN ELECTRIC ARC BETWEEN THE END OF THE WIRE AND AN ALUMINUM WORKPIECE, CONTINUOUSLY FEEDING THE ALUMINUM
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-06-14 | 1957-12-14 | 1958-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-06-14 | 1961-12-14 | 1962-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-06-14 | 1965-12-14 | 1966-06-15 | $7700.00 | Window Closed / Lapsed |