Patent US2674790A successfully refreshed from Google Patents.
US2674790A
Expired / Lapsed
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Method of soldering aluminous metal parts by treating with chloride fluxes
Assignee: RTX Corp
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Filing: 1950-04-15
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Granted: 1954-04-13
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Expires: 1970-04-15
Abstract
No abstract record available.
Inventors
- 👤 Alden P Edson
- 👤 Isaac L Newell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:18
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/38; B23K35/383
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 words
THE PROCESS OF JOINING METAL PARTS SELECTED FROM THE GROUP CONSISTING OF ALUMINUM AND ALUMINUM-CONTAINING ALLOYS BY SOLDER WHICH INCLUDES FLUXING THE METAL PARTS AND SOLDER AT SOLDERING TEMPERATURE BY MEANS OF A STABLE GASEOUS ATMOSPHERE SUBSTANTIALLY INERT WITH RESPECT TO THE METALS BEING TREATED BUT REACTIVE WITH THEIR OXIDES, THE ACTIVE COMPONENT OF WHICH ATMOSPHERE IS PROVIDED BY A VOLATILE INORGANIC CHLORIDE HAVING TWO OR MORE CHLORINE ATOMS CONNECTED TO A SINGLE ATOM AND HAVING A MOLECULAR WEIGHT AT LEAST 117 REACTIVE WITH THE OXIDE OF THE METALS, SAID CHLORIDE BEING VOLATILE AT SOLDERING TEMPERATURE AND SUBJECTING THE METAL PARTS TO SAID STABLE GASEOUS ATMOSPHERE AT SOLDERING TEMPERATURE UNTIL THE METAL PARTS HAVE BEEN BONDED BY SAID SOLDER.
Claim 2
Dependent Claim
119 words
THE PROCESS OF JOINING METAL PARTS SELECTED FROM THE GROUP CONSISTING OF ALUMINUM AND ALUMINUM-CONTAINING ALLOYS BY SOLDER WHICH INCLUDES FLUXING THE METAL PARTS AND SOLDER AT SOLDERING TEMPERATURE BY MEANS OF A STABLE GASEOUS ATMOSPHERE SUBSTANTIALLY INERT WITH RESPECT TO THE METALS BEING TREATED BUT REACTIVE WITH THEIR OXIDES, THE ACTIVE COMPONENT OF WHICH ATMOSPHERE IS PROVIDED BY A VOLATILE INORGANIC CHLORIDE HAVING TWO OR MORE CHLORINE ATOMS CONNECTED TO A SINGLE ATOM AND HAVING A MOLECULAR WEIGHT AT LEAST 117 REACTIVE WITH THE OXIDE OF THE METALS, SAID CHLORIDE BEING VOLATILE AT SOLDERING TEMPERATURE AND SUBJECTING THE METAL PARTS TO SAID STABLE GASEOUS ATMOSPHERE AT SOLDERING TEMPERATURE UNTIL THE METAL PARTS HAVE BEEN BONDED BY SAID SOLDER.
References Cited (Backward Citations)
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Cited
US1536944A
Cited
US2100974A
Cited
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Cited
US2561565A
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-04-12 | 1957-10-12 | 1958-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-12 | 1961-10-12 | 1962-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-12 | 1965-10-12 | 1966-04-13 | $7700.00 | Window Closed / Lapsed |