US3606574A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cooled shrouded turbine blade
Assignee: General Electric Co
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Filing: 1969-10-23
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Granted: 1971-09-20
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Expires: 1989-10-23
Abstract
Abstract A HOLLOW TURBINE BLADE IS PROVIDED WITH A CIRCUMFERENTIAL SHROUD SEGMENT AT ITS OUTER END. A CIRCUMFERENTIAL PLENUM DIRECTS COOLING FLUID FROM THE BLADE TO HOLES WHICH EXTEND TO THE INNER SURFACE OF THE SHROUD SEGMENT TO PROVIDE FOR COOLING OF THE SHROUD. THE PLENUM IS OF ARCHED CONSTRUCTION FOR MAXIMUM STRENGTH.
Inventors
- 👤 Henry J Brands
- 👤 Joseph W Savage
- 👤 Frederick C Herzner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:59
CPC Classifications
F; F01; F01D; F01D5/00; F01D5/12; F01D5/22; F01D5/225; F01D5/14; F01D5/18; F01D5/187; F05; F05D; F05D2240/00; F05D2240/80; F05D2240/81; F05D2260/00; F05D2260/20; F05D2260/201
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-19 | 1975-03-21 | 1975-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-19 | 1979-03-21 | 1979-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-19 | 1983-03-21 | 1983-09-20 | $7700.00 | Window Closed / Lapsed |