Patent US3330475A successfully refreshed from Google Patents.
US3330475A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vane construction in turbofan engine
Assignee: RTX Corp
•
Filing: 1965-04-12
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Granted: 1967-07-11
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Expires: 1985-04-12
Abstract
No abstract record available.
Inventors
- 👤 William T Dennison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:58
CPC Classifications
F; F01; F01D; F01D5/00; F01D5/02; F01D5/022; Y; Y02; Y02T; Y02T50/00; Y02T50/60
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
IN A TURBOFAN ENGINE, OUTER AND INTERMEDIATE WALLS DEFINING BETWEEN THEM AN OUTER DUCT FOR AIR AND THE INTERMEDIATE WALL DEFINING WITHIN IT AN INNER DUCT, A ROW OF GUIDE VANES SUPPORTED BY THE OUTER WALL AND EXTENDING ACROSS THE OUTER DUCT AND FORMING A SUPPORT FOR THE INTERMEDIATE WALL, A ROW OF STATOR VANES EXTENDING ACROSS THE INNER DUCT, A RING TO WHICH THE OUTER ENDS OF THE STATOR VANES ARE SECURED, THE INNER ENDS OF THE GUIDE VANES BEING ALSO SECURED TO SAID RING, AND MEANS SUPPORTING THE INTERMEDIATE WALL FROM THE RING.
Claim 2
Dependent Claim
95 words
IN A TURBOFAN ENGINE, OUTER AND INTERMEDIATE WALLS DEFINING BETWEEN THEM AN OUTER DUCT FOR AIR AND THE INTERMEDIATE WALL DEFINING WITHIN IT AN INNER DUCT, A ROW OF GUIDE VANES SUPPORTED BY THE OUTER WALL AND EXTENDING ACROSS THE OUTER DUCT AND FORMING A SUPPORT FOR THE INTERMEDIATE WALL, A ROW OF STATOR VANES EXTENDING ACROSS THE INNER DUCT, A RING TO WHICH THE OUTER ENDS OF THE STATOR VANES ARE SECURED, THE INNER ENDS OF THE GUIDE VANES BEING ALSO SECURED TO SAID RING, AND MEANS SUPPORTING THE INTERMEDIATE WALL FROM THE RING.
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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) | 1970-07-10 | 1971-01-09 | 1971-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-10 | 1975-01-09 | 1975-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-10 | 1979-01-09 | 1979-07-11 | $7700.00 | Window Closed / Lapsed |