US3261587A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bearing support
Assignee: RTX Corp
•
Filing: 1964-06-24
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Granted: 1966-07-19
•
Expires: 1984-06-24
Abstract
No abstract record available.
Inventors
- 👤 Robert L Rowley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:45
CPC Classifications
F; F02; F02C; F02C7/00; F02C7/36; F01; F01D; F01D25/00; F01D25/16; F01D25/162; F01D25/164; F02C7/06; F16; F16C; F16C27/00; F16C27/04; F16C19/00; F16C19/22; F16C19/24; F16C19/26; F16C2360/00; F16C2360/23; Y; Y02; Y02T; Y02T50/00; Y02T50/60
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
126 words
IN A DUCTED FAN GAS TURBINE ENGINE HAVING AN AXIAL SHAFT, INNER AND OUTER ENGINE CYLINDRICAL CASINGS CONCENTRIC WITH SAID SHAFT FORMING A TURBINE DISCHARGE PASSAGE, A BEARING SUPPORTING SAID SHAFT, AN OUTER FAN CASING CONCENTRIC WITH SAID SHAFT SPACED FROM SAID OUTER ENGINE CASING AND FORMING WITH THE LATTER A FAN DUCT, SAID INNER CASING HAVING A RIGID INNER RING PROVIDING SUPPORT FOR SAID SHAFT BEARING AND ENGINE CASES, SAID OUTER FAN CASING HAVING A RIGID OUTER RING, A PLURALITY OF RADIAL RODS PIVOTED AT THEIR INNER ENDS TO SAID INNER RING AND AT THEIR OUTER ENDS TO SAID OUTER RING, SAID RODS BEING NORMALLY IN TENSION, AND RESILIENT MEANS BETWEEN SAID INNER RING AND SAID BEARING PROVIDING THE SELECTED SPRING RATE FOR SAID BEARING.
Claim 2
Dependent Claim
126 words
IN A DUCTED FAN GAS TURBINE ENGINE HAVING AN AXIAL SHAFT, INNER AND OUTER ENGINE CYLINDRICAL CASINGS CONCENTRIC WITH SAID SHAFT FORMING A TURBINE DISCHARGE PASSAGE, A BEARING SUPPORTING SAID SHAFT, AN OUTER FAN CASING CONCENTRIC WITH SAID SHAFT SPACED FROM SAID OUTER ENGINE CASING AND FORMING WITH THE LATTER A FAN DUCT, SAID INNER CASING HAVING A RIGID INNER RING PROVIDING SUPPORT FOR SAID SHAFT BEARING AND ENGINE CASES, SAID OUTER FAN CASING HAVING A RIGID OUTER RING, A PLURALITY OF RADIAL RODS PIVOTED AT THEIR INNER ENDS TO SAID INNER RING AND AT THEIR OUTER ENDS TO SAID OUTER RING, SAID RODS BEING NORMALLY IN TENSION, AND RESILIENT MEANS BETWEEN SAID INNER RING AND SAID BEARING PROVIDING THE SELECTED SPRING RATE FOR SAID BEARING.
References Cited (Backward Citations)
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US2724621A
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US2928648A
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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) | 1969-07-18 | 1970-01-17 | 1970-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-18 | 1974-01-17 | 1974-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-18 | 1978-01-17 | 1978-07-19 | $7700.00 | Window Closed / Lapsed |