Patent US1921319A successfully refreshed from Google Patents.
US2914435A
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Brazing alloy-flux paste
Assignee: Eutectic Corp
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Filing: 1956-10-02
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Granted: 1959-11-24
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Expires: 1976-10-02
Abstract
No abstract record available.
Inventors
- 👤 Rene D Wasserman
- 👤 Henry H Simons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:58
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/36; B23K35/3601; B23K35/3606; B23K35/24; B23K35/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
171 words
A STABLE BRAZING ALLOY-FLUX PASTE CONSISTING ESSENTIALLY AS FOLLOWS: FROM ABOUT 25 TO ABOUT 45 PARTS BY WEIGHT OF FLUXING INGREDIENTS OF THE ALKALI METAL BORATE AND ALKALI METAL FLUORIDE TYPE, FROM ABOUT 8 TO ABOUT 14 PARTS BY WEIGHT OF AN AQUEOUS PASTE VEHICLE, FROM ABOUT 50 TO ABOUT 70 PARTS BY WEIGHT OF A BRAZING ALLOY POWDER HAVING A PARTICLE SIZE FROM ABOUT 100 TO 150 MESH, SAID BRAZING ALLOY POWDER CONSISTING ESSENTIALLY OF FROM 10 TO 70% BY WEIGHT OF SILVER, FROM 14 TO 50% BY WEIGHT OF COPPER AND THE REMAINDER BEING ALLOYING METALS WHICH ARE COMPATIBLE WITH SAID SILVER TO PRODUCE A THIN FLOWING ALLOY HAVING A MELTING POINT RANGING FROM ABOUT 1100 TO 1500*F., AND SAID FLUX INGREDIENTS HAVING A FUSION POINT BELOW THE MELTING POINT OF SAID ALLOY POWDER AND BEING COMPATIBLE WITH THE COMPOSITION OF SAID ALLOY POWDER TO PROTECT IT FROM OXIDIZATION DURING DEPOSITION WITHOUT CORRODING IT, AND SAID AQUEOUS VEHICLE FORMING A SUSPENSION OF SAID FLUXING INGREDIENTS AND SAID ALLOY POWDER.
Claim 2
Dependent Claim
171 words
A STABLE BRAZING ALLOY-FLUX PASTE CONSISTING ESSENTIALLY AS FOLLOWS: FROM ABOUT 25 TO ABOUT 45 PARTS BY WEIGHT OF FLUXING INGREDIENTS OF THE ALKALI METAL BORATE AND ALKALI METAL FLUORIDE TYPE, FROM ABOUT 8 TO ABOUT 14 PARTS BY WEIGHT OF AN AQUEOUS PASTE VEHICLE, FROM ABOUT 50 TO ABOUT 70 PARTS BY WEIGHT OF A BRAZING ALLOY POWDER HAVING A PARTICLE SIZE FROM ABOUT 100 TO 150 MESH, SAID BRAZING ALLOY POWDER CONSISTING ESSENTIALLY OF FROM 10 TO 70% BY WEIGHT OF SILVER, FROM 14 TO 50% BY WEIGHT OF COPPER AND THE REMAINDER BEING ALLOYING METALS WHICH ARE COMPATIBLE WITH SAID SILVER TO PRODUCE A THIN FLOWING ALLOY HAVING A MELTING POINT RANGING FROM ABOUT 1100 TO 1500*F., AND SAID FLUX INGREDIENTS HAVING A FUSION POINT BELOW THE MELTING POINT OF SAID ALLOY POWDER AND BEING COMPATIBLE WITH THE COMPOSITION OF SAID ALLOY POWDER TO PROTECT IT FROM OXIDIZATION DURING DEPOSITION WITHOUT CORRODING IT, AND SAID AQUEOUS VEHICLE FORMING A SUSPENSION OF SAID FLUXING INGREDIENTS AND SAID ALLOY POWDER.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-23 | 1963-05-25 | 1963-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-23 | 1967-05-25 | 1967-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-23 | 1971-05-25 | 1971-11-24 | $7700.00 | Window Closed / Lapsed |