US3073114A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vortex venturi
Assignee: RTX Corp
•
Filing: 1959-04-06
•
Granted: 1963-01-15
•
Expires: 1979-04-06
Abstract
No abstract record available.
Inventors
- 👤 Homer J Wood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:26
CPC Classifications
F; F02; F02C; F02C7/00; F02C7/26; F02C7/268; F02C7/275; F02C7/277; F01; F01D; F01D21/00; F01D21/02
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
111 words
IN COMBINATION A CHOKED TURBINE INLET NOZZLE, SAID NOZZLE HAVING A PRESSURE RATIO MATERIALLY GREATER THAN ITS CRITICAL PRESSURE RATIO, A TURBINE WHEEL RECEIVING ASES FROM SAID NOZZLE AND CONSTRUCTED AND ARRANGED TO DISCHARGE GASES AXIALLY AT NORMAL TURBINE SPEED, AN EXHAUST DUCT OF REDUCING CROSS SECTION RECEIVING SAID DISCHARGED GASES AND HAVING A DISCHARGE OPENING OPERATING AT NORMAL TURBINE SPEED WITH SUBSTANTIALLY AXIAL FLOW AT SUBSTANTIALLY SONIC VELOCITY TO PRODUCE A SUBSTANTIALLY CHOKED DISCHARGE OPENING, SAID TURBINE WHEEL CONSTRUCTED AND ARRANGED TO DISCHARGE GASES TANGENTIALLY AT SPEEDS ABOVE SAID NORMAL SPEED AND CREATE A VORTEX IN SAID SPEED TO INCREASE THE BACK PRESSURE ON SAID TURBINE TO LIMIT THE OVERSPEED.
References Cited (Backward Citations)
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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) | 1966-01-14 | 1966-07-16 | 1967-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-14 | 1970-07-16 | 1971-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-14 | 1974-07-16 | 1975-01-15 | $7700.00 | Window Closed / Lapsed |