US3565543A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure balanced starter rotor
Assignee: RTX Corp
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Filing: 1969-04-02
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Granted: 1971-02-23
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Expires: 1989-04-02
Abstract
Abstract SCOOPS IN THE EXHAUST DEFLECTOR OF A GAS TURBINE ENGINE STARTER ROTOR ARE ORIENTED SO THAT AT THE FREE RUNNING CONDITION OF THE STARTER ROTOR, THE VELOCITY HEAD OF THE SWIRL COMPONENT OF THE AIR LEAVING THE ROTOR IS CONVERTED INTO A PRESSURE HEAD WHICH PRESSURIZES THE CAVITY ON THE BACK SIDE OF THE ROTOR, THE AIR IS ALSO CAUSED TO COOL THE ROTOR BEARINGS.
Inventors
- 👤 James A Mrazek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 13:02
CPC Classifications
F; F01; F01D; F01D3/00; F01D5/00; F01D5/02; F01D5/08; F01D5/081; F01D5/082; Y; Y02; Y02T; Y02T50/00; Y02T50/60; Y10; Y10S; Y10S415/00; Y10S415/904
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) | 1974-02-22 | 1974-08-24 | 1975-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-22 | 1978-08-24 | 1979-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-22 | 1982-08-24 | 1983-02-23 | $7700.00 | Window Closed / Lapsed |