Patent US3083451A successfully refreshed from Google Patents.
US3083451A
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Beryllium brazing
Assignee: ASS ELECT IND MANCHESTER Ltd
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Filing: 1959-09-25
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Granted: 1963-04-02
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Expires: 1979-09-25
Abstract
No abstract record available.
Inventors
- 👤 Atkinson Denzil Malcolm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:05
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/24; B23K35/30; B23K35/3006; H; H01; H01J; H01J35/00; H01J35/02; H01J35/16; H01J35/18
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
131 words
A METHOD OF BRAZING BERYLLIUM COMPRISING PLACING A BRAZING SOLDER BETWEEN THE BERYLLIUM AND A BASE METAL TO WHICH THE BERYLLIUM IS TO BE BRAZED, SAID SOLDER CONSISTING ESSENTIALLY OF BETWEEN 55% TO 70% SILVER, BETWEEN 20% TO 30% COPPER, AND BETWEEN 10% TO 20% PALLADIUM, THE SUM TOTAL OF THE THREE STATED MATERIALS USED IN SAID SOLDER BEING 100%, HEATING THE ASSEMBLY TO A TEMPERATURE BELOW THE SOLIDUS TEMPERATURE OF THE SOLDER BUT HIGH ENOUGH TO CAUSE INTERDIFFUSION TO TAKE PLACE BETWEEN THE BERYLLIUM AND THE SOLDER, MAINTAINING THIS TEMPERATURE FOR A PERIOD SUFFICIENT TO BRING ABOUT A LIMITED DEGREE OF INTERDIFFUSION, RAISING THE TEMPERATURE OF THE ASSEMBLY ABOVE THE LIQUIDUS TEMPERATURE OF THE SOLDER FOR A TIME SUFFICIENT TO PRODUCE A BRAZED JOINT, AND THEN COOLING THE BRAZED ASSEMBLY.
References Cited (Backward Citations)
US2310568A
Cited
GB573176A
Cited
US2406310A
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US2719797A
Cited
US2770033A
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US2748067A
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US2844868A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-04-01 | 1966-10-01 | 1967-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-01 | 1970-10-01 | 1971-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-01 | 1974-10-01 | 1975-04-02 | $7700.00 | Window Closed / Lapsed |