US2829048A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High damping alloy and members prepared therefrom
Assignee: Westinghouse Electric Corp
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Filing: 1956-01-16
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Granted: 1958-04-01
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Expires: 1976-01-16
Abstract
No abstract record available.
Inventors
- 👤 Alexander W Cochardt
- 👤 Robert W Hogue
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:27
CPC Classifications
F; F01; F01D; F01D5/00; F01D5/12; F01D5/14; F01D5/16; C; C22; C22C; C22C19/00; C22C19/07; F01D5/26; F01D5/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
A MEMBER SUITABLE FOR USE AS A TURBINE BLADE, HAVING HIGH DAMPING PROPERTIES AT 1200*F., COMPRISING A MEMBER OF AN ALLOY COMPOSED OF, BY WEIGHT, FROM 65% TO 88% COBALT, FROM 1% TO 2% TITANIUM, FROM 0.1% TO 1.5% ALUMINUM, THE TOTAL OF TITANIUM, AND ALUMINUM BEING AT LEAST 1.5%, CARBON NOT EXCEEDING 0.05%, AND THE BALANCE, AT LEAST 8%, BEING NICKEL, WITH IMPURITIES NOT EXCEEDING 1%, THE WROUGHT BLADE HAVING BEEN SOLUTION TREATED ABOVE 1600*F. AND ABOVE THE RECRYSTALLIZATION TEMPERATURE OF THE ALLOY. AND THEN AGED AT FROM ABOUT 1200*F. TO 1400*F. FOR AT LEAST 4 HOURS TO PRECIPITATION HARDEN THE ALLOY TO A HARDNESS OF BETWEEN 250 AND 330 VHN, AND HAVING A CURIE TEMPERATURE OIF OVER 1450*F.
Claim 2
Dependent Claim
120 words
A MEMBER SUITABLE FOR USE AS A TURBINE BLADE, HAVING HIGH DAMPING PROPERTIES AT 1200*F., COMPRISING A MEMBER OF AN ALLOY COMPOSED OF, BY WEIGHT, FROM 65% TO 88% COBALT, FROM 1% TO 2% TITANIUM, FROM 0.1% TO 1.5% ALUMINUM, THE TOTAL OF TITANIUM, AND ALUMINUM BEING AT LEAST 1.5%, CARBON NOT EXCEEDING 0.05%, AND THE BALANCE, AT LEAST 8%, BEING NICKEL, WITH IMPURITIES NOT EXCEEDING 1%, THE WROUGHT BLADE HAVING BEEN SOLUTION TREATED ABOVE 1600*F. AND ABOVE THE RECRYSTALLIZATION TEMPERATURE OF THE ALLOY. AND THEN AGED AT FROM ABOUT 1200*F. TO 1400*F. FOR AT LEAST 4 HOURS TO PRECIPITATION HARDEN THE ALLOY TO A HARDNESS OF BETWEEN 250 AND 330 VHN, AND HAVING A CURIE TEMPERATURE OIF OVER 1450*F.
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) | 1961-03-31 | 1961-09-30 | 1962-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-31 | 1965-09-30 | 1966-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-31 | 1969-09-30 | 1970-04-01 | $7700.00 | Window Closed / Lapsed |