Patent US2957239A successfully refreshed from Google Patents.
US2957239A
Expired / Lapsed
US
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Brazing of nickel base alloys
Assignee: Orenda Engines Ltd
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Filing: 1958-12-10
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Granted: 1960-10-25
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Expires: 1978-12-10
Abstract
No abstract record available.
Inventors
- 👤 Ross E Pritchard
- 👤 Hans W Hoefer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:44
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/38; B23K1/00; B23K1/19
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
A METHOD OF JOINING TOGETHER COMPONENTS MADE OF NICKEL BASE ALLOYS CONTAINING BETWEEN ABOUT 3% AND 8% TOTAL OF ALUMINUM PLUS TITANIUM, WHICH COMPRISES TREATING THE COMPONENTS IN AN OXIDIZING ATMOSPHERE PREFERENTIALLY TO OXIDIZE THE TITANIUM AND ALUMINUM IN SURFACE ZONES OF THE COMPONENTS TO A SCALE, REMOVING THE SCALE FROM SAID ZONES, WHILE LEAVING THE REMAINDER OF THE ZONES INTACT, AND BRAZING THE COMPONENTS TOGETHER AT SAID ZONES IN AN ATMOSPHERE CONSISTING OF A GAS SELECTED FROM THE GROUP CONSISTING OF ARGON AND HELIUM, SAID ATMOSPHERE HAVING A DEW POINT AT LEAST AS LOW AS -100*F.
Claim 2
Independent Claim
97 words
A METHOD OF JOINING TOGETHER COMPONENTS MADE OF NICKEL BASE ALLOYS CONTAINING BETWEEN ABOUT 3% AND 8% TOTAL OF ALUMINUM PLUS TITANIUM, WHICH COMPRISES TREATING THE COMPONENTS IN AN OXIDIZING ATMOSPHERE PREFERENTIALLY TO OXIDIZE THE TITANIUM AND ALUMINUM IN SURFACE ZONES OF THE COMPONENTS TO A SCALE, REMOVING THE SCALE FROM SAID ZONES, WHILE LEAVING THE REMAINDER OF THE ZONES INTACT, AND BRAZING THE COMPONENTS TOGETHER AT SAID ZONES IN AN ATMOSPHERE CONSISTING OF A GAS SELECTED FROM THE GROUP CONSISTING OF ARGON AND HELIUM, SAID ATMOSPHERE HAVING A DEW POINT AT LEAST AS LOW AS -100*F.
References Cited (Backward Citations)
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Cited
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US2276847A
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US2508465A
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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) | 1963-10-25 | 1964-04-25 | 1964-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-25 | 1968-04-25 | 1968-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-25 | 1972-04-25 | 1972-10-25 | $7700.00 | Window Closed / Lapsed |