US3302890A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rocket nozzle
Assignee: Atlantic Research Corp
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Filing: 1964-07-10
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Granted: 1967-02-07
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Expires: 1984-07-10
Abstract
No abstract record available.
Inventors
- 👤 Silver Bernard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:10
CPC Classifications
F; F02; F02K; F02K9/00; F02K9/80
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
164 words
IN COMBINATION, A ROCKET MOTOR AND AN AXIAL-THRUST MODULATING ROCKET EXHAUST NOZZLE COMPRISING: (A) A HOUSING INCLUDING A PAIR OF END WALLS, A FIRST AND A SECOND CHAMBER WITHIN SAID HOUSING, SAID FIRST AND SECOND CHAMBERS BEING SEPARATED BY A PARTITION HAVING AN OPENING THERETHROUGH, ONE OF SAID END WALLS HAVING A REARWARDLY DIRECTED PRIMARY EXHAUST PORT THERETHROUGH COMMUNICATING WITH SAID FIRST CHAMBER, SAID HOUSING HAVING A LATERALLY DIRECTED SECONDARY EXHAUST PORT THERETHROUGH COMMUNICATING WITH SAID SECOND CHAMBER, (B) FIRST MEANS MOUNTED WITHIN SAID HOUSING FOR VARYING THE EFFECTIVE EXHAUST AREA OF SAID PRIMARY EXHAUST PORT, AND (C) SECOND MEANS MOUNTED WITHIN SAID HOUSING FOR VARYING THE EFFECTIVE EXHAUST AREA OF SAID OPENING IN INVERSE PROPORTION TO THE VARIATION OF SAID PRIMARY EXHAUST PORT AREA, THE GEOMETRICAL CONFIGURATION OF SAID PRIMARY EXHAUST PORT, SAID FIRST MEANS, SAID OPENING, AND SAID SECOND MEANS PROVIDING A CONSTANT SUM TOTAL EFFECTIVE EXHAUST AREA TO EFFECT VARIOUS AXIAL THRUST LEVELS WITHOUT AFFECTING THE ROCKET MOTOR COMBUSTION CHAMBER PRESSURE.
Claim 2
Dependent Claim
164 words
IN COMBINATION, A ROCKET MOTOR AND AN AXIAL-THRUST MODULATING ROCKET EXHAUST NOZZLE COMPRISING: (A) A HOUSING INCLUDING A PAIR OF END WALLS, A FIRST AND A SECOND CHAMBER WITHIN SAID HOUSING, SAID FIRST AND SECOND CHAMBERS BEING SEPARATED BY A PARTITION HAVING AN OPENING THERETHROUGH, ONE OF SAID END WALLS HAVING A REARWARDLY DIRECTED PRIMARY EXHAUST PORT THERETHROUGH COMMUNICATING WITH SAID FIRST CHAMBER, SAID HOUSING HAVING A LATERALLY DIRECTED SECONDARY EXHAUST PORT THERETHROUGH COMMUNICATING WITH SAID SECOND CHAMBER, (B) FIRST MEANS MOUNTED WITHIN SAID HOUSING FOR VARYING THE EFFECTIVE EXHAUST AREA OF SAID PRIMARY EXHAUST PORT, AND (C) SECOND MEANS MOUNTED WITHIN SAID HOUSING FOR VARYING THE EFFECTIVE EXHAUST AREA OF SAID OPENING IN INVERSE PROPORTION TO THE VARIATION OF SAID PRIMARY EXHAUST PORT AREA, THE GEOMETRICAL CONFIGURATION OF SAID PRIMARY EXHAUST PORT, SAID FIRST MEANS, SAID OPENING, AND SAID SECOND MEANS PROVIDING A CONSTANT SUM TOTAL EFFECTIVE EXHAUST AREA TO EFFECT VARIOUS AXIAL THRUST LEVELS WITHOUT AFFECTING THE ROCKET MOTOR COMBUSTION CHAMBER PRESSURE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-06 | 1970-08-08 | 1971-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-06 | 1974-08-08 | 1975-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-06 | 1978-08-08 | 1979-02-07 | $7700.00 | Window Closed / Lapsed |