US3558237A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable turbine nozzles
Assignee: Motors Liquidation Co
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Filing: 1969-06-25
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Granted: 1971-01-26
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Expires: 1989-06-25
Abstract
Abstract TURBINE NOZZLE STRUCTURES WITH VARIABLE SETTING VANES AND SHROUD STRUCTURES TO SUPPORT THE VANES, HAVING POROUS FACINGS WHICH ARE ADAPTED FOR TRANSPIRTION COOLING BY AIR FLOWING THROUGH THE FACINGS. ARRANGEMENTS FOR MOUNTING THE FACINGS ON THE STRUCTURAL RINGS OF THE SHROUDS AND FOR SUPPORTING THE PARTS WITH FREEDOM FOR RELATIVE EXPANSION. ALSO, ARRANGEMENTS FOR SEALING AGAINST UNDUE LEAKAGE BETWEEN THE PIVOTING VANES AND THE SHROUD FACINGS.
Inventors
- 👤 Earle R Wall Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:25
CPC Classifications
F; F01; F01D; F01D17/00; F01D17/10; F01D17/12; F01D17/14; F01D17/16; F01D17/162
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) | 1974-01-25 | 1974-07-27 | 1975-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-25 | 1978-07-27 | 1979-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-25 | 1982-07-27 | 1983-01-26 | $7700.00 | Window Closed / Lapsed |