US3442006A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for welding or brazing two members of which at least one is made of graphite
Assignee: Safran Aircraft Engines SAS
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Filing: 1963-12-12
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Granted: 1969-05-06
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Expires: 1983-12-12
Abstract
No abstract record available.
Inventors
- 👤 Lucien Robert Guichet
- 👤 Georges Jacques Gotoghian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:46
CPC Classifications
B; B23; B23K; B23K5/00; B23K5/12; B23K35/00; B23K35/22; B23K35/24; B23K35/32; B23K35/327; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9335; Y10S428/938; Y10S428/939; Y10T; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/12028; Y10T428/12063; Y10T428/12069; Y10T428/12493; Y10T428/12535; Y10T428/12625; Y10T428/12771; Y10T428/12806; Y10T428/12812
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
PROCESS FOR WELDING-BRAZING A GRAPHITE MEMBER TO A MEMBER MADE FROM GRAPHITE OR A REFRACTORY MATERIAL SELECTED FROM THE GROUP CONSISTING OF TUNGSTEN, MOLYBDENUM, ZIRCONIUM, HALFNIUM, TANTALUM, TITANIUM AND NIOBIUM, AND THE NITRIDES, CARBIDES AND BORIDES OF THESE METALS, SAID PROCESS INCLUDING THE STEPS OF INTERPOSING BETWEEN SURFACES OF SAID MEMBERS WHICH ARE TO BE UNITED A FIXATIVE INTERMEDIATE LAYER CONSISTING OF A MIXTURE OF (1) AT LEAST ONE REFRACTORY MATERIAL SELECTED FROM THE SAID GROUP TOGETHER WITH (2) AT LEAST ONE METAL SELECTED FROM THE GROUP CONSISTING OF RUTHENIUM, RHODIUM, PALLADIUM, OSMIUM, IRIDIUM AND PLATINUM, WHEREIN THE METAL OF THE LATTER GROUP IS PRESENT IN THE MIXTURE IN A PROPORTION BETWEEN 1% AND 50% BY MASS, EUTECTIC MIXTURES BEING EXCEPTED, BRINGING SAID MEMBERS TOGETHER AND HEATING TO AN ELEVATED TEMPERATURE.
Claim 2
Dependent Claim
131 words
PROCESS FOR WELDING-BRAZING A GRAPHITE MEMBER TO A MEMBER MADE FROM GRAPHITE OR A REFRACTORY MATERIAL SELECTED FROM THE GROUP CONSISTING OF TUNGSTEN, MOLYBDENUM, ZIRCONIUM, HALFNIUM, TANTALUM, TITANIUM AND NIOBIUM, AND THE NITRIDES, CARBIDES AND BORIDES OF THESE METALS, SAID PROCESS INCLUDING THE STEPS OF INTERPOSING BETWEEN SURFACES OF SAID MEMBERS WHICH ARE TO BE UNITED A FIXATIVE INTERMEDIATE LAYER CONSISTING OF A MIXTURE OF (1) AT LEAST ONE REFRACTORY MATERIAL SELECTED FROM THE SAID GROUP TOGETHER WITH (2) AT LEAST ONE METAL SELECTED FROM THE GROUP CONSISTING OF RUTHENIUM, RHODIUM, PALLADIUM, OSMIUM, IRIDIUM AND PLATINUM, WHEREIN THE METAL OF THE LATTER GROUP IS PRESENT IN THE MIXTURE IN A PROPORTION BETWEEN 1% AND 50% BY MASS, EUTECTIC MIXTURES BEING EXCEPTED, BRINGING SAID MEMBERS TOGETHER AND HEATING TO AN ELEVATED TEMPERATURE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-05-05 | 1972-11-04 | 1973-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-05 | 1976-11-04 | 1977-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-05 | 1980-11-04 | 1981-05-06 | $7700.00 | Window Closed / Lapsed |