US3259972A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Exoreactant material for bonding
Assignee: Whittaker Corp
•
Filing: 1963-02-01
•
Granted: 1966-07-12
•
Expires: 1983-02-01
Abstract
No abstract record available.
Inventors
- 👤 Roger A Long
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:33
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/34
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
17 words
AN EXOTHERMIC BRAZING COMPOSITION CONSISTING ESSENTIALLY OF NICKEL OXIDE, A METALLIC FLUORIDE AND A SOLID REDUCING AGENT.
Claim 2
Dependent Claim
17 words
AN EXOTHERMIC BRAZING COMPOSITION CONSISTING ESSENTIALLY OF NICKEL OXIDE, A METALLIC FLUORIDE AND A SOLID REDUCING AGENT.
Claim 3
Independent Claim
151 words
THE METHOD OF UNITING TWO METAL PIECES COMPRISING: PLACING AT THE JOINT OF SAID METAL PIECES A METALLIC COMPOSITION, SAID METALLIC COMPOSITION BEING SELECTED FROM THE GROUP CONSISTING OF NICKEL OXIDE AND A MIXTURE OF METALLIC OXIDE AND METALLIC FLUORIDE, SAID COMPOSITION ALSO CONTAINING A REDUCING AGENT, THE METALS OF SAID OXIDE AND SAID FLUORIDE HAVING MELTING FLUORIDE, SAID COMPOSITION METAL PIECE AND HIGHER THAN 900*F.; HEATING THE METALLIC COMPOSITION TO A TEMPERATURE SUFFICIENT TO INITIATE THE REACTION BETWEEN SAID SELECTED COMPOSITION AND SAID REDUCING AGENT; ALLOWING SAID REACTION TO CONTINUE UNTIL SUBSTANTIALLY ALL OF SAID SELECTED COMPOSITION HAS BEEN REDUCED TO NATIVE METAL AND UNTIL THE HEAT PRODUCED BY THE REACTION IS SUFFICIENTLY HIGH TO ALLOW SAID NATIVE METAL TO FLOW BUT LESS THAN THAT WHICH WILL CAUSE A SUBSTANTIAL PORTION OF EITHER METAL PIECE TO MELT; AND ALLOWING SAID NATIVE METALS TO COOL WHEREBY SAID METAL PIECES ARE UNITED
Claim 4
Independent Claim
151 words
THE METHOD OF UNITING TWO METAL PIECES COMPRISING: PLACING AT THE JOINT OF SAID METAL PIECES A METALLIC COMPOSITION, SAID METALLIC COMPOSITION BEING SELECTED FROM THE GROUP CONSISTING OF NICKEL OXIDE AND A MIXTURE OF METALLIC OXIDE AND METALLIC FLUORIDE, SAID COMPOSITION ALSO CONTAINING A REDUCING AGENT, THE METALS OF SAID OXIDE AND SAID FLUORIDE HAVING MELTING FLUORIDE, SAID COMPOSITION METAL PIECE AND HIGHER THAN 900*F.; HEATING THE METALLIC COMPOSITION TO A TEMPERATURE SUFFICIENT TO INITIATE THE REACTION BETWEEN SAID SELECTED COMPOSITION AND SAID REDUCING AGENT; ALLOWING SAID REACTION TO CONTINUE UNTIL SUBSTANTIALLY ALL OF SAID SELECTED COMPOSITION HAS BEEN REDUCED TO NATIVE METAL AND UNTIL THE HEAT PRODUCED BY THE REACTION IS SUFFICIENTLY HIGH TO ALLOW SAID NATIVE METAL TO FLOW BUT LESS THAN THAT WHICH WILL CAUSE A SUBSTANTIAL PORTION OF EITHER METAL PIECE TO MELT; AND ALLOWING SAID NATIVE METALS TO COOL WHEREBY SAID METAL PIECES ARE UNITED
References Cited (Backward Citations)
US1813904A
Cited
US1872254A
Cited
GB415181A
Cited
US2362245A
Cited
US3020610A
Cited
US3069765A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-07-11 | 1970-01-10 | 1970-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-11 | 1974-01-10 | 1974-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-11 | 1978-01-10 | 1978-07-12 | $7700.00 | Window Closed / Lapsed |