US3121785A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fusion-pressure joining of aluminum alloy members
Assignee: Alcoa Corp
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Filing: 1961-11-14
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Granted: 1964-02-18
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Expires: 1981-11-14
Abstract
No abstract record available.
Inventors
- 👤 James R Terrill
- 👤 James C Richards
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:41
CPC Classifications
B; B23; B23K; B23K20/00; B23K20/22; B23K20/233; B23K20/2336; B23K35/00; B23K35/001; B23K35/002
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
143 words
THE METHOD OF FUSION-PRESSURE JOINING STRUCTURAL MEMBERS OF ALUMINUM BASE ALLOYS CONTAINING AT LEAST 2% BY WEIGHT OF ADDED ELEMENTS AND IMPURITIES COMPRISING PROVIDING A SMOOTH SURFACE ON THE MEMBERS AT THE INTERFACE WHERE THEY ARE TO BE JOINED, PROVIDING A RELATIVELY SMALL AMOUNT OF CUPROUS METAL AT THE INTERFACE, ASSEMBLING THE MEMBERS IN JOINT RELATIONSHIP, RAPIDLY HEATING THE JOINT TO A TEMPERATURE AT LEAST HIGH ENOUGH TO PRODUCE A MOLTEN EUTECTIC CONTAINING ALUMINUM AND COPPER AS THE PRINCIPAAL COMPONENTS, SAID MOLTEN EUTECTIC EXTENDING OVER THE ENTIRE INTERFACE OF AT LEAST ONE OF THE MEMBERS BEING JOINED BUT LEAVING A SUBSTANTIAL PORTION OF THE MEMBERS IN THE SOLID STATE, APPLYING AT LEAST SUFFICIENT PRESSURE TO THE JOINT TO EXPEL SUBSTANTIALLY ALL OF THE LLIQUID EUTECTIC FROM THE INTERFACE OF THE JOINT AND DEFORM THE MEMBERS AT THE INTERFACE, AND THEREAFTER COOLING THE JOINT.
Claim 2
Independent Claim
143 words
THE METHOD OF FUSION-PRESSURE JOINING STRUCTURAL MEMBERS OF ALUMINUM BASE ALLOYS CONTAINING AT LEAST 2% BY WEIGHT OF ADDED ELEMENTS AND IMPURITIES COMPRISING PROVIDING A SMOOTH SURFACE ON THE MEMBERS AT THE INTERFACE WHERE THEY ARE TO BE JOINED, PROVIDING A RELATIVELY SMALL AMOUNT OF CUPROUS METAL AT THE INTERFACE, ASSEMBLING THE MEMBERS IN JOINT RELATIONSHIP, RAPIDLY HEATING THE JOINT TO A TEMPERATURE AT LEAST HIGH ENOUGH TO PRODUCE A MOLTEN EUTECTIC CONTAINING ALUMINUM AND COPPER AS THE PRINCIPAAL COMPONENTS, SAID MOLTEN EUTECTIC EXTENDING OVER THE ENTIRE INTERFACE OF AT LEAST ONE OF THE MEMBERS BEING JOINED BUT LEAVING A SUBSTANTIAL PORTION OF THE MEMBERS IN THE SOLID STATE, APPLYING AT LEAST SUFFICIENT PRESSURE TO THE JOINT TO EXPEL SUBSTANTIALLY ALL OF THE LLIQUID EUTECTIC FROM THE INTERFACE OF THE JOINT AND DEFORM THE MEMBERS AT THE INTERFACE, AND THEREAFTER COOLING THE JOINT.
References Cited (Backward Citations)
FR813357A
Cited
US2790656A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-02-17 | 1967-08-19 | 1968-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-02-17 | 1971-08-19 | 1972-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-02-17 | 1975-08-19 | 1976-02-18 | $7700.00 | Window Closed / Lapsed |