US3259971A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High temperature braze alloy and method of using the same for molybdenum, other refractory metals and alloys thereof
Assignee: Lockheed Martin Corp
•
Filing: 1962-12-10
•
Granted: 1966-07-12
•
Expires: 1982-12-10
Abstract
No abstract record available.
Inventors
- 👤 Leonard J Gagola
- 👤 Charles R Wilks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:01
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/24; B23K35/32; B23K35/325
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
110 words
A BRAZING COMPOUND FOR USE IN BRAZING PARTS SELECTED FROM THE GROUP CONSISTING OF MOLYBDENUM, COLUMBIUM, TANTALUM, TUNGSTEN, AND REFRACTORY ALLOYS OF THESE METALS IN WHICH THE REMELT TEMPERATURE OF THE BRAZEMENT IS APPRECIABLY HIGHER THAN THE ORIGINAL BRAZING TEMPERATURE OF THE BRAZING ALLOY AS A RESULT OF SUBSEQUENT DIFFUSION ALLOYING, SAID BAXING COMPOUND COMPRISING A MIXTURE OF A BRAZE ALLOY CONSISTING OF 91.5 PLUS OR MINUS 1.0% TITANIUM AND 8.5 PLUS OR MINUS 1.0% SILICON BY WEIGHT AND A POWDERED METAL SELECTED FROM THE GROUP CONSISTING OF MOLYBDENUM AND COLUMBIUM, THE RATIO OF BRAZE ALLOY TO POWDERED METAL BEING RESPECTIVELY BY WEIGHT IN THE RANGE OF 4 TO 5:1.
Claim 2
Dependent Claim
110 words
A BRAZING COMPOUND FOR USE IN BRAZING PARTS SELECTED FROM THE GROUP CONSISTING OF MOLYBDENUM, COLUMBIUM, TANTALUM, TUNGSTEN, AND REFRACTORY ALLOYS OF THESE METALS IN WHICH THE REMELT TEMPERATURE OF THE BRAZEMENT IS APPRECIABLY HIGHER THAN THE ORIGINAL BRAZING TEMPERATURE OF THE BRAZING ALLOY AS A RESULT OF SUBSEQUENT DIFFUSION ALLOYING, SAID BAXING COMPOUND COMPRISING A MIXTURE OF A BRAZE ALLOY CONSISTING OF 91.5 PLUS OR MINUS 1.0% TITANIUM AND 8.5 PLUS OR MINUS 1.0% SILICON BY WEIGHT AND A POWDERED METAL SELECTED FROM THE GROUP CONSISTING OF MOLYBDENUM AND COLUMBIUM, THE RATIO OF BRAZE ALLOY TO POWDERED METAL BEING RESPECTIVELY BY WEIGHT IN THE RANGE OF 4 TO 5:1.
Claim 3
Independent Claim
143 words
A METHOD OF BRAZING PARTS SELECTED FROM THE GROUP CONSISTING OF MOLYBDENUM, COLUMBIUM, TANTALUM, TUNGSTEN, AND REFRACTORY ALLOYS OF THESE METALS IN WHICH THE REMELT TEMPERATURE OF THE BRAZEMENT IS APPRECIABLY HIGHER THAN THE ORIGINAL BRAZING TEMPERATURE OF THE BRAZING ALLOY WHICH COMPRISES: FORMING A BRAZE ALLOY CONSISTING OF 91.5 PLUS OR MINUS 1.0% TITANIUM AND 8.2 PLUS OR MINUS 1.0% SILICON BY WEIGHT, FORMING A BRAZING COMPOUND OF SAID BRAZING ALLOY AND A POWDERED METAL SELECTED FROM THE GROUP CONSISTING OF MOLYBDENUM AND COLUMBIUM, WITH THE RATIO OF BRAZE ALLOY AND POWDERED METAL BEING RESPECTIVELY BY WEIGHT IN THE RANGE OF 4 OR 5:1, BRAZING THE ASSEMBLY INCLUDING SAID BRAZING COMPOUND AT A TEMPERATURE OF 245*F. TO 2600*F. FOR A TIME PERIOD UP TO FIFTEEN MINUTES, AND DIFFUSION ALLOYING SAID BRAZED ASSEMBLY AT A TEMPERATURE OF 2200*F. FOR THREE TO SIX HOURS.
Claim 4
Independent Claim
143 words
A METHOD OF BRAZING PARTS SELECTED FROM THE GROUP CONSISTING OF MOLYBDENUM, COLUMBIUM, TANTALUM, TUNGSTEN, AND REFRACTORY ALLOYS OF THESE METALS IN WHICH THE REMELT TEMPERATURE OF THE BRAZEMENT IS APPRECIABLY HIGHER THAN THE ORIGINAL BRAZING TEMPERATURE OF THE BRAZING ALLOY WHICH COMPRISES: FORMING A BRAZE ALLOY CONSISTING OF 91.5 PLUS OR MINUS 1.0% TITANIUM AND 8.2 PLUS OR MINUS 1.0% SILICON BY WEIGHT, FORMING A BRAZING COMPOUND OF SAID BRAZING ALLOY AND A POWDERED METAL SELECTED FROM THE GROUP CONSISTING OF MOLYBDENUM AND COLUMBIUM, WITH THE RATIO OF BRAZE ALLOY AND POWDERED METAL BEING RESPECTIVELY BY WEIGHT IN THE RANGE OF 4 OR 5:1, BRAZING THE ASSEMBLY INCLUDING SAID BRAZING COMPOUND AT A TEMPERATURE OF 245*F. TO 2600*F. FOR A TIME PERIOD UP TO FIFTEEN MINUTES, AND DIFFUSION ALLOYING SAID BRAZED ASSEMBLY AT A TEMPERATURE OF 2200*F. FOR THREE TO SIX HOURS.
References Cited (Backward Citations)
US3073269A
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 |