US3230613A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making a cooled rocket nozzle
Assignee: Northrop Grumman Space and Mission Systems Corp
•
Filing: 1961-04-18
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Granted: 1966-01-25
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Expires: 1981-04-18
Abstract
No abstract record available.
Inventors
- 👤 Francis J Rechin
- 👤 Raymond M Bluck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 02:07
CPC Classifications
F; F02; F02K; F02K9/00; F02K9/97; F02K9/972; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49346; Y10T29/4981
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
THE METHOF OF FORMING A ONE PIECE GAS DISCHARGE NOZZLE FOR REACTION MOTORS COMPRISING: BORING A GENERALLY CYLINDRICAL BILLET TO FORM A MAIN GAS DISCHARGE FLOW PASSAGE, FORMING A PLURALITY OF OPEN-ENDED AND AXIALLY ALIGNED COOLANT FLOW PASSAGES OF SMALLER DIAMETER THAN THE MAIN FLOW PASSAGE IN THE WALL OF THE BILLET, CORING THE FLOW PASSAGES, DIVERGINGLY TAPERING ONE END OF THE BILLET AND MAIN FLOW PASSAGE TO FORM THE NOZZLE EXIT PORTION AND TO ANGLE THE COOLANT FLOW PASSAGES ADJACENT THE NOZZLE EXIT PORTION
Claim 2
Dependent Claim
85 words
THE METHOF OF FORMING A ONE PIECE GAS DISCHARGE NOZZLE FOR REACTION MOTORS COMPRISING: BORING A GENERALLY CYLINDRICAL BILLET TO FORM A MAIN GAS DISCHARGE FLOW PASSAGE, FORMING A PLURALITY OF OPEN-ENDED AND AXIALLY ALIGNED COOLANT FLOW PASSAGES OF SMALLER DIAMETER THAN THE MAIN FLOW PASSAGE IN THE WALL OF THE BILLET, CORING THE FLOW PASSAGES, DIVERGINGLY TAPERING ONE END OF THE BILLET AND MAIN FLOW PASSAGE TO FORM THE NOZZLE EXIT PORTION AND TO ANGLE THE COOLANT FLOW PASSAGES ADJACENT THE NOZZLE EXIT PORTION
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) | 1969-01-24 | 1969-07-26 | 1970-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-24 | 1973-07-26 | 1974-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-24 | 1977-07-26 | 1978-01-25 | $7700.00 | Window Closed / Lapsed |