US3175286A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of treating metal powders for brazing purposes
Assignee: Coast Metals Inc
•
Filing: 1963-10-04
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Granted: 1965-03-30
•
Expires: 1983-10-04
Abstract
No abstract record available.
Inventors
- 👤 Arthur T Cape
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:00
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/02; B23K35/0222; B23K35/0244; B22; B22F; B22F1/00; B22F1/16
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
96 words
THE METHOD OF ENHANCING THE FLOW PROPERTIES OF BRAZING ALLOYS, WHICH COMPRISES SUBJECTING THE BRAZING ALLOY, IN POWDER FORM, TO TREATMENT WITH AN AQUEOUS SOLUTION CONTAINING ONLY HYDROFLUORIC ACID IN AN AMOUNT OF FROM ABOUT 1% TO ABOUT 8% BY WEIGHT, AND ABOUT 1% TO ABOUT 8% BY WEIGHT OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF SODIUM FLUORIDE, POTASSIUM FLUORIDE, CAESIUM FLUORIDE, LITHIUM FLUORIDE, RUBIDIUM FLUORIDE, SODIUM FLUOBORATE AND POTASSIUM FLUOBORATE, CAUSING THE SOLUTION TO BE THROUGHLY MIXED WITH THE POWDER, WHEREBY THE COMPOUND IS ABSORBED BY THE POWDER PARTICLES, AND DRYING THE POWDER.
Claim 2
Independent Claim
96 words
THE METHOD OF ENHANCING THE FLOW PROPERTIES OF BRAZING ALLOYS, WHICH COMPRISES SUBJECTING THE BRAZING ALLOY, IN POWDER FORM, TO TREATMENT WITH AN AQUEOUS SOLUTION CONTAINING ONLY HYDROFLUORIC ACID IN AN AMOUNT OF FROM ABOUT 1% TO ABOUT 8% BY WEIGHT, AND ABOUT 1% TO ABOUT 8% BY WEIGHT OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF SODIUM FLUORIDE, POTASSIUM FLUORIDE, CAESIUM FLUORIDE, LITHIUM FLUORIDE, RUBIDIUM FLUORIDE, SODIUM FLUOBORATE AND POTASSIUM FLUOBORATE, CAUSING THE SOLUTION TO BE THROUGHLY MIXED WITH THE POWDER, WHEREBY THE COMPOUND IS ABSORBED BY THE POWDER PARTICLES, AND DRYING THE POWDER.
Claim 3
Independent Claim
102 words
THE METHOD OF BRAZING AN ALLOY FOR HIGH TEMPERATURE SERVICE, SAID ALLOY SELECTED FROM THE GROUP CONSISTING OF STAINLESS STEELS AND SUPERALLOYS, SAID METHOD COMPRISING BRAZING SAID ALLOY BY MEANS OF A BRAZING ALLOY WHICH HAS BEEN TREATED, IN POWDER FORM, WITH AN AQUEOUS SOLUTION CONTAINING ONLY HYDROFLUORIC ACID IN AN AMOUNT OF FROM ABOUT 1% TO ABOUT 8% BY WEIGHT OF THE BRAZING ALLOY, AND FROM ABOUT 1% TO ABOUT 8% BY WEIGHT OF THE BRAZING ALLOY OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF SODIUM FLUORIDE, POTASSIUM FLUORIDE, CAESIUM FLUORIDE, LITHIUM FLORIDE, RUBIDUM FLUORIDE, SODIUM FLUOBORATE AND POTASSIUM FLUOBORATE.
Claim 4
Independent Claim
102 words
THE METHOD OF BRAZING AN ALLOY FOR HIGH TEMPERATURE SERVICE, SAID ALLOY SELECTED FROM THE GROUP CONSISTING OF STAINLESS STEELS AND SUPERALLOYS, SAID METHOD COMPRISING BRAZING SAID ALLOY BY MEANS OF A BRAZING ALLOY WHICH HAS BEEN TREATED, IN POWDER FORM, WITH AN AQUEOUS SOLUTION CONTAINING ONLY HYDROFLUORIC ACID IN AN AMOUNT OF FROM ABOUT 1% TO ABOUT 8% BY WEIGHT OF THE BRAZING ALLOY, AND FROM ABOUT 1% TO ABOUT 8% BY WEIGHT OF THE BRAZING ALLOY OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF SODIUM FLUORIDE, POTASSIUM FLUORIDE, CAESIUM FLUORIDE, LITHIUM FLORIDE, RUBIDUM FLUORIDE, SODIUM FLUOBORATE AND POTASSIUM FLUOBORATE.
References Cited (Backward Citations)
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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) | 1968-03-29 | 1968-09-28 | 1969-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-29 | 1972-09-28 | 1973-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-29 | 1976-09-28 | 1977-03-30 | $7700.00 | Window Closed / Lapsed |