US3563669A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable area nozzle
Assignee: Motors Liquidation Co
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Filing: 1969-07-10
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Granted: 1971-02-16
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Expires: 1989-07-10
Abstract
Abstract A VARIABLE AREA TURBINE NOZZLE INCLUDES VANES HAVING THE MAJOR PORTION OF THE VANE FIXED TO THE NOZZLE SHROUD AND HAVING A TRAILING EDGE PORTION WHICH MAY BE RECIPROCATED CHOYDWISE OF EACH VANE TO VARY THE NOZZLE THROAT AREA. THE TRAILING EDGE PORTIONS ARE MOVED BY ARMS FIXED ON SHAFTS WHICH EXTEND THROUGH THE ADJACENT VANES, THESE SHAFTS BEING COUPLED TO A DEVICE FOR ROTATING THEM IN UNISON. PROVISIONS FOR COOLING THE INTERIOR OF THE FIXED PORTION OF THE VANE AND FLOWING THE COOLING AIR OVER THE SURFACE OF THE MOVABLE PORTION ARE INCLUDED.
Inventors
- 👤 Chester E Hockert
- 👤 Earle R Wall Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:21
CPC Classifications
F; F01; F01D; F01D5/00; F01D5/12; F01D5/14; F01D5/18; F01D17/00; F01D17/10; F01D17/12; F01D17/14; F01D17/16; F01D17/162; F01D5/148
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-15 | 1974-08-17 | 1975-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-15 | 1978-08-17 | 1979-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-15 | 1982-08-17 | 1983-02-16 | $7700.00 | Window Closed / Lapsed |