US3561884A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stator blade construction for turbomachines
Assignee: Sulzer AG
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Filing: 1968-10-11
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Granted: 1971-02-09
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Expires: 1988-10-11
Abstract
Abstract THERE IS DISCLOSED A STATOR BLADE CONSTRUCTION FOR TURBOMACHINES (E.G. TURBINES, OR PUMPS OR COMPRESSORS) IN WHICH THE POSITION OF THE STATOR BLADES OF EACH STAGE IS DEFINED AXIALLY AND READIALLY IN AN ANNULAR HOUSING BY MEANS OF COAXIAL PLANE ANNULAR, CYLINDRICAL, OR CONICAL SURFACES FORMED IN THAT HOUSING BY TURNING OR BORING OPERATIONS.
Inventors
- 👤 Ferdinand Zerlauth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:35
CPC Classifications
F; F01; F01D; F01D9/00; F01D9/02; F01D9/04; F01D9/042
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) | 1974-02-08 | 1974-08-10 | 1975-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-08 | 1978-08-10 | 1979-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-08 | 1982-08-10 | 1983-02-09 | $7700.00 | Window Closed / Lapsed |