US3925070A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Brazing alloy
Assignee: Coast Metals Inc
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Filing: 1974-04-24
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Granted: 1975-12-09
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Expires: 1994-04-24
Abstract
Abstract Brazing alloys of the type described in U.S. Pat. Nos. 3,197,859 and 3,198,609 are disclosed, containing gold in appreciable amounts, providing substantial increases in the average shear strength of such alloys, and improvements in flow of the alloys.
Inventors
- 👤 Arthur T Cape
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:29
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/24; B23K35/30; B23K35/3026; B23K35/302
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
58 words
A BRAZING ALLOY OF RELATIVELY HIGH TENSILE SHEAR STRENGTH AT ELEVATED TEMPERATURES, SAID ALLOY CONSISTING OF FROM ABOUT 30% TO ABOUT 70% COPPER, FROM ABOUT 0% TO ABOUT 18% COBALT, FROM ABOUT 3% TO ABOUT 20% NICKEL, AND FROM ABOUT 1% TO ABOUT 3% GOLD, WITH THE REMAINDER ESSENTIALLY ALL MANGANESE, BUT NOT LESS THAN ABOUT 20% MANGANESE.
Claim 2
Dependent Claim
58 words
A BRAZING ALLOY OF RELATIVELY HIGH TENSILE SHEAR STRENGTH AT ELEVATED TEMPERATURES, SAID ALLOY CONSISTING OF FROM ABOUT 30% TO ABOUT 70% COPPER, FROM ABOUT 0% TO ABOUT 18% COBALT, FROM ABOUT 3% TO ABOUT 20% NICKEL, AND FROM ABOUT 1% TO ABOUT 3% GOLD, WITH THE REMAINDER ESSENTIALLY ALL MANGANESE, BUT NOT LESS THAN ABOUT 20% MANGANESE.
Claim 3
Dependent Claim
29 words
A brazing alloy of relatively high tensile shear strength at elevated temperatures, said alloy consisting of about 52.5% copper, about 9.00% nickel, about 35.5% manganese, and about 3% gold.
Claim 4
Dependent Claim
29 words
A brazing alloy of relatively high tensile shear strength at elevated temperatures, said alloy consisting of about 52.5% copper, about 9.00% nickel, about 35.5% manganese, and about 3% gold.
References Cited (Backward Citations)
US385909A
Cited
US2270868A
Cited
US3198609A
Cited
US3197859A
Cited
US3519416A
Cited
US3693246A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-12-08 | 1979-06-09 | 1979-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-08 | 1983-06-09 | 1983-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-08 | 1987-06-09 | 1987-12-09 | $7700.00 | Window Closed / Lapsed |