Patent US2984903A successfully refreshed from Google Patents.
US2984903A
Expired / Lapsed
US
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Brazing alloy and ultrasonic process for using the same
Assignee: Westinghouse Electric Corp
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Filing: 1957-12-06
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Granted: 1961-05-23
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Expires: 1977-12-06
Abstract
No abstract record available.
Inventors
- 👤 Dixon Austin
- 👤 James R Spierto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:41
CPC Classifications
B; B23; B23K; B23K3/00; B23K3/06; B23K3/0646; B23K3/0661; B23K35/00; B23K35/22; B23K35/24; B23K35/28; B23K35/286; B23K35/288
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
41 words
AN ALLOY SUITABLE FOR ULTRASONIC BRAZING OF METALS AND ALLOYS, THE ALLOY CONSISTING ESSENTIALLY OF 12% BY WEIGHT OF COPPER 5% BY WEIGHT OF PHOSPHOROUS, 5% BY WEIGHT OF SILVER, 48% BY WEIGHT OF ZINC, AND 30% BY WEIGHT OF ALUMINUM.
Claim 2
Dependent Claim
41 words
AN ALLOY SUITABLE FOR ULTRASONIC BRAZING OF METALS AND ALLOYS, THE ALLOY CONSISTING ESSENTIALLY OF 12% BY WEIGHT OF COPPER 5% BY WEIGHT OF PHOSPHOROUS, 5% BY WEIGHT OF SILVER, 48% BY WEIGHT OF ZINC, AND 30% BY WEIGHT OF ALUMINUM.
Claim 3
Dependent Claim
153 words
A PROCESS FOR JOINING METALS AND ALLOYS WHICH COMPRISES HEATING MEMBERS OF THE METALS TO BE JOINED TO A TEMPERATURE OF FROM ABOUT 700*F. TO 950*F., SUFFICIENT TO MELT A BRAZING ALLOY CONSISTING ESSENTIALLY OF FROM 2 TO 15% BY WEIGHT OF COPPER, FROM 3 TO 7% BY WEIGHT OF PHOSPHORUS, FROM 2 TO 10% BY WEIGHT OF SILVER, FROM 45 TO 60% BY WEIGHT OF ZINC, AND FROM 20 TO 40% BY WEIGHT OF ALUMINUM, APPLYING A QUANTITY OF SAID BRAZING ALLOY AT LEAST TO THE MEETING SURFACES OF THE MEMBERS TO BE JOINED WHEREBY SAID ALLOY MELTS, SUBJECTING THE MOLTEN ALLOY TO HIGH FREQUENCY MECHANICAL VIBRATIONS OF BETWEEN 9000 TO 60,000 CYCLES PER SECOND FOR A PERIOD OF A FEW SECONDS TO APPLY A COATING OF SAID ALLOY ON EACH OF SAID JOINING SURFACES, COOLING THE JOINT TO SOLIDIFY THE APPLIED ALLOY AND TO BOND THE MEMBERS INTO A UNITARY STRUCTURE.
Claim 4
Dependent Claim
153 words
A PROCESS FOR JOINING METALS AND ALLOYS WHICH COMPRISES HEATING MEMBERS OF THE METALS TO BE JOINED TO A TEMPERATURE OF FROM ABOUT 700*F. TO 950*F., SUFFICIENT TO MELT A BRAZING ALLOY CONSISTING ESSENTIALLY OF FROM 2 TO 15% BY WEIGHT OF COPPER, FROM 3 TO 7% BY WEIGHT OF PHOSPHORUS, FROM 2 TO 10% BY WEIGHT OF SILVER, FROM 45 TO 60% BY WEIGHT OF ZINC, AND FROM 20 TO 40% BY WEIGHT OF ALUMINUM, APPLYING A QUANTITY OF SAID BRAZING ALLOY AT LEAST TO THE MEETING SURFACES OF THE MEMBERS TO BE JOINED WHEREBY SAID ALLOY MELTS, SUBJECTING THE MOLTEN ALLOY TO HIGH FREQUENCY MECHANICAL VIBRATIONS OF BETWEEN 9000 TO 60,000 CYCLES PER SECOND FOR A PERIOD OF A FEW SECONDS TO APPLY A COATING OF SAID ALLOY ON EACH OF SAID JOINING SURFACES, COOLING THE JOINT TO SOLIDIFY THE APPLIED ALLOY AND TO BOND THE MEMBERS INTO A UNITARY STRUCTURE.
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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) | 1964-05-22 | 1964-11-21 | 1965-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-22 | 1968-11-21 | 1969-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-22 | 1972-11-21 | 1973-05-23 | $7700.00 | Window Closed / Lapsed |