US3235959A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Brazing aluminum based parts
Assignee: Alloys Research and Manufacturing Corp
•
Filing: 1962-06-25
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Granted: 1966-02-22
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Expires: 1982-06-25
Abstract
No abstract record available.
Inventors
- 👤 Bartoszak Anthony
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:39
CPC Classifications
C; C23; C23C; C23C24/00; C23C24/08; C23C24/10; C23C24/103; C23C24/106; B; B23; B23K; B23K35/00; B23K35/22; B23K35/24; B23K35/28; B23K35/286
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
THE METHOD OF BRAZING COMPRISING APPLYING TO A PART TO BE BRAZED A MIXTURE OF ALUMINUM AND COPPER POWDER WHEREIN THE RELATIVE COPPER CONTENT IS ABOUT 1 TO 5% BY WEIGHT, SAID PART HAVING A MELTING POINT ABOVE THE EUTECTIC TEMPERATURE OF SAID MIXTURE, AND HEATING THE COMBINATION IN A PROTECTIVE ATMOSPHERE AT A TEMPERATURE BELOW THE MELTING POINT OF SAID PART AND ABOVE SAID EUTECTIC TEMPERATURE FOR A PERIOD SUFFICIENT TO PRODUCE A DIFFUSION ZONE BETWEEN SAID PART AND THE SINTERED BODY OF SAID MIXTURE.
Claim 2
Independent Claim
86 words
THE METHOD OF BRAZING COMPRISING APPLYING TO A PART TO BE BRAZED A MIXTURE OF ALUMINUM AND COPPER POWDER WHEREIN THE RELATIVE COPPER CONTENT IS ABOUT 1 TO 5% BY WEIGHT, SAID PART HAVING A MELTING POINT ABOVE THE EUTECTIC TEMPERATURE OF SAID MIXTURE, AND HEATING THE COMBINATION IN A PROTECTIVE ATMOSPHERE AT A TEMPERATURE BELOW THE MELTING POINT OF SAID PART AND ABOVE SAID EUTECTIC TEMPERATURE FOR A PERIOD SUFFICIENT TO PRODUCE A DIFFUSION ZONE BETWEEN SAID PART AND THE SINTERED BODY OF SAID MIXTURE.
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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) | 1969-02-21 | 1969-08-23 | 1970-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-21 | 1973-08-23 | 1974-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-21 | 1977-08-23 | 1978-02-22 | $7700.00 | Window Closed / Lapsed |