US3321179A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas turbine engines
Assignee: Caterpillar Inc
•
Filing: 1965-09-13
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Granted: 1967-05-23
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Expires: 1985-09-13
Abstract
No abstract record available.
Inventors
- 👤 Lloyd E Johnson
- 👤 Kenneth D Probert
- 👤 Franklin E Zimmerman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:26
CPC Classifications
F; F01; F01D; F01D9/00; F01D9/02; F01D9/04; F01D9/042; F01D5/00; F01D5/02; F01D5/08; F01D5/081; F02; F02C; F02C7/00; F02C7/12; F02C7/16; F02C7/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
147 words
AN ANNULAR NOZZLE ASSEMBLY FOR THE TURBINE INLET OF A GAS TURBINE ENGINE COMPRISING, A PLURALITY OF CIRCUMFERENTIALLY SPACED RADIALLY EXTENDING NOZZLES AND INNER AND OUTER HOOPS ATTACHED TO THE ENDS OF THE NOZZLES, MOUNTING MEANS PROVIDING A FLEXIBLE MOUNTING FOR THE NOZZLE ASSEMBLY TO ACCOMMODATE DIFFERENTIAL THERMAL EXPANSION OF THE NOZZLE ASSEMBLY COMPONENTS PRODUCED BY TEMPERATURE CHANGES DURING OPERATION OF THE ENGINE, SAID MOUNTING MEANS INCLUDING A GENERALLY CYLINDRICALLY-SHAPED MEMBER INTEGRAL WITH THE INNER HOOP AT ONE END AND CONNECTED TO THE ENGINE FRAME AT THE OTHER END TO PROVIDE A PRIMARY SUPPORT WHICH IS EFFECTIVE TO PERMIT RELATIVE THERMAL EXPANSION OF NOZZLE ASSEMBLY COMPONENTS AND TO PREVENT RESTRAINING STRESS THAT COULD CAUSE CRACKING, A STOP FIXED TO THE OUTER SHELL OF THE ENGINE AND LOCATED TO PERMIT A LIMITED AXIAL MOVEMENT OF THE NOZZLE ASSEMBLY BEFORE THE OUTER HOOP ENGAGES THE STOP TO THEREBY PERMIT
Claim 2
Dependent Claim
147 words
AN ANNULAR NOZZLE ASSEMBLY FOR THE TURBINE INLET OF A GAS TURBINE ENGINE COMPRISING, A PLURALITY OF CIRCUMFERENTIALLY SPACED RADIALLY EXTENDING NOZZLES AND INNER AND OUTER HOOPS ATTACHED TO THE ENDS OF THE NOZZLES, MOUNTING MEANS PROVIDING A FLEXIBLE MOUNTING FOR THE NOZZLE ASSEMBLY TO ACCOMMODATE DIFFERENTIAL THERMAL EXPANSION OF THE NOZZLE ASSEMBLY COMPONENTS PRODUCED BY TEMPERATURE CHANGES DURING OPERATION OF THE ENGINE, SAID MOUNTING MEANS INCLUDING A GENERALLY CYLINDRICALLY-SHAPED MEMBER INTEGRAL WITH THE INNER HOOP AT ONE END AND CONNECTED TO THE ENGINE FRAME AT THE OTHER END TO PROVIDE A PRIMARY SUPPORT WHICH IS EFFECTIVE TO PERMIT RELATIVE THERMAL EXPANSION OF NOZZLE ASSEMBLY COMPONENTS AND TO PREVENT RESTRAINING STRESS THAT COULD CAUSE CRACKING, A STOP FIXED TO THE OUTER SHELL OF THE ENGINE AND LOCATED TO PERMIT A LIMITED AXIAL MOVEMENT OF THE NOZZLE ASSEMBLY BEFORE THE OUTER HOOP ENGAGES THE STOP TO THEREBY PERMIT
References Cited (Backward Citations)
GB243027A
Cited
US2296702A
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DE740440C
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US2401826A
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US2628067A
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US2488975A
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US2606741A
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US2686653A
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US2789787A
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US2710523A
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US3074690A
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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) | 1970-05-22 | 1970-11-21 | 1971-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-22 | 1974-11-21 | 1975-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-22 | 1978-11-21 | 1979-05-23 | $7700.00 | Window Closed / Lapsed |