US2779999A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of copper brazing
Assignee: Curtiss Wright Corp
•
Filing: 1952-01-04
•
Granted: 1957-02-05
•
Expires: 1972-01-04
Abstract
No abstract record available.
Inventors
- 👤 Willard M Boam
- 👤 Herman H Hanink
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:45
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/001; B23K35/004; B23K35/22; B23K35/24; B23K35/30; B23K35/302; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/923; Y10S428/924; Y10S428/926; Y10S428/9335; Y10S428/934; Y10S428/935; Y10S428/939; Y10T; Y10T29/00; Y10T29/49; Y10T29/49316; Y10T29/49336; Y10T29/49339; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12771; Y10T428/12861; Y10T428/12903; Y10T428/1291; Y10T428/12937
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
A THE METHOD OF FABRICATING A STRUCTURE FROM A PLURALITY OF STEEL PARTS CONTAINING 0.5 TO 5.0 PERCENT CHROMIUM, SAID METHOD COMPRISING TH ESTEPS OF FIRST PLATING THE ENTIRE SURFACE OF EACH OF SAID PARTS WITH NICKEL TO A THICKNESS OF 0.0002 INCH TO 0.0005 INCH; DISPOSING PORTIONS OF THE NICKEL PLATED SURFACES OF SAID PARTS IN SUBSTANTIALLY ABUTTING RELATION WITH A CLEARANCE THEREBETWEEN OF APPROXIMATELY 0.001 INCH; AND THEN COPPER BRAZING SAID SURFACE PORTIONS TOGETHER AT A TEMPERATURE OF AT LEAST 2000*F.
Claim 2
Dependent Claim
83 words
A THE METHOD OF FABRICATING A STRUCTURE FROM A PLURALITY OF STEEL PARTS CONTAINING 0.5 TO 5.0 PERCENT CHROMIUM, SAID METHOD COMPRISING TH ESTEPS OF FIRST PLATING THE ENTIRE SURFACE OF EACH OF SAID PARTS WITH NICKEL TO A THICKNESS OF 0.0002 INCH TO 0.0005 INCH; DISPOSING PORTIONS OF THE NICKEL PLATED SURFACES OF SAID PARTS IN SUBSTANTIALLY ABUTTING RELATION WITH A CLEARANCE THEREBETWEEN OF APPROXIMATELY 0.001 INCH; AND THEN COPPER BRAZING SAID SURFACE PORTIONS TOGETHER AT A TEMPERATURE OF AT LEAST 2000*F.
References Cited (Backward Citations)
GB309032A
Cited
US1829179A
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US1898487A
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US2225868A
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US2231888A
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US2174733A
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US2269523A
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US2280337A
Cited
US2214002A
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US2428033A
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US2473712A
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US2471663A
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US2633633A
Cited
US2609598A
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US2606362A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-02-05 | 1960-08-06 | 1961-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-02-05 | 1964-08-06 | 1965-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-02-05 | 1968-08-06 | 1969-02-05 | $7700.00 | Window Closed / Lapsed |