US3000755A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oxidation-resistant turbine blades
Assignee: Motors Liquidation Co
•
Filing: 1956-10-11
•
Granted: 1961-09-19
•
Expires: 1976-10-11
Abstract
No abstract record available.
Inventors
- 👤 Dean K Hanink
- 👤 Erwin R Price
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:22
CPC Classifications
C; C23; C23C; C23C2/00; C23C2/04; C23C2/12; F; F01; F01D; F01D5/00; F01D5/12; F01D5/28; F01D5/288; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12736; Y10T428/1275
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
132 words
A METHOD OF MAKING A HIGH TEMPERATURE OXIDATIONRESISTANT TURBINE BLADE WHICH COMPRISES APPLYING A COATING METAL SELECTED FROM THE CLASS CONSISTING OF ALUMINUM AND ALUMINUM BASE ALLOYS TO SURFACES OF A TURBINE BLADE FORMED OF A BASE METAL SELECTED FROM THE CLASS CONSISTING OF NICKEL BASE ALLOYS AND COBALT BASE ALLOYS, HEATING SAID BLADE TO DIFFUSE A PORTION OF SAID COATING METAL INTO SAID BASE METAL, REMOVING EXCESS COATING METAL FROM SAID SURFACES WITH AN ACID SOLUTION, AND THEREAFTER HEATING SAID BLADE FOR A PERIOD OF TIME SUFFICIENT TO DIFFUSE THE REMAINING COATING METAL INTO SAID SURFACES TO FORM WITH THE BASE METAL OF SAID TURBINE BLADE AN OXIDATION-RESISTANT SURFACE LAYER OF AN ALLOY OF SAID COATING METAL AND SAID BASE METAL HAVING A THICKNESS NOT IN EXCESS OF APPROXIMATELY 0.0025 INCH.
Claim 2
Independent Claim
132 words
A METHOD OF MAKING A HIGH TEMPERATURE OXIDATIONRESISTANT TURBINE BLADE WHICH COMPRISES APPLYING A COATING METAL SELECTED FROM THE CLASS CONSISTING OF ALUMINUM AND ALUMINUM BASE ALLOYS TO SURFACES OF A TURBINE BLADE FORMED OF A BASE METAL SELECTED FROM THE CLASS CONSISTING OF NICKEL BASE ALLOYS AND COBALT BASE ALLOYS, HEATING SAID BLADE TO DIFFUSE A PORTION OF SAID COATING METAL INTO SAID BASE METAL, REMOVING EXCESS COATING METAL FROM SAID SURFACES WITH AN ACID SOLUTION, AND THEREAFTER HEATING SAID BLADE FOR A PERIOD OF TIME SUFFICIENT TO DIFFUSE THE REMAINING COATING METAL INTO SAID SURFACES TO FORM WITH THE BASE METAL OF SAID TURBINE BLADE AN OXIDATION-RESISTANT SURFACE LAYER OF AN ALLOY OF SAID COATING METAL AND SAID BASE METAL HAVING A THICKNESS NOT IN EXCESS OF APPROXIMATELY 0.0025 INCH.
References Cited (Backward Citations)
US1770177A
Cited
US1881064A
Cited
US2167701A
Cited
US2478037A
Cited
US2475601A
Cited
US2682702A
Cited
US2757445A
Cited
US2569097A
Cited
US2586100A
Cited
US2885304A
Cited
US2930106A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-09-18 | 1965-03-20 | 1965-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-09-18 | 1969-03-20 | 1969-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-09-18 | 1973-03-20 | 1973-09-19 | $7700.00 | Window Closed / Lapsed |