US3137128A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid bipropellant rocket engine control system
Assignee: North American Aviation Corp
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Filing: 1960-04-25
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Granted: 1964-06-16
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Expires: 1980-04-25
Abstract
No abstract record available.
Inventors
- 👤 Richard K Francais
- 👤 Clifford A Hauenstein
- 👤 James O Bates
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:25
CPC Classifications
F; F02; F02K; F02K9/00; F02K9/42; F02K9/44; F02K9/56
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
135 words
A LIQUID BIPROPELLANT ROCKET ENGINE SEQUENTIAL CONTROL SYSTEM COMPRISING: FIRST DISCHARGE MEANS FOR DISCHARGING A FIRST BIPROPELLANT LIQUID CONSTITUENT; SECOND DISCHARGE MEANS FOR DISCHARGING A SECOND BIPROPELLANT LIQUID CONSTITUENT; FIRST AND SECOND VALVE MEANS OPERATIVELY CONNECTED TO SAID FIRST AND SECON DISCHARGE MEANS RESPECTIVELY, INITIALLY REMAINING IN A CLOSED POSITION AND ADAPTED TO SEQUENTIALLY OPEN AT A PREDETERMINED DISCHARGE PRESSURE OF SAID SECOND LIQUID CONSTITUENT SAID SECOND VALVE MEANS BEING CONSTRUCTED AND ARRANGED TO BE STRUCTURALLY INDEPENDENT IN ITS OPERATION FROM SAID FIRST VALVE MEANS; SENSING MEANS OPERTIVELY CONNECTING SAID SECOND DISCHARGE MEANS AND SAID FIRST VALVE MEANS FOR OPENING THE FIRST VALVE MEANS WHEN THE FIRST VALVE MEANS SENSES SAID PREDETERMINED PRESSURE OF SAID SECOND LIQUID CONSTITUENT; SEQUENCE VALVE MEANS OPERATIVELY CONNECTED TO SAID FIRST VALVE MEANS, SAID SECOND VALVE MEANS AND SAID SENSING
Claim 2
Dependent Claim
135 words
A LIQUID BIPROPELLANT ROCKET ENGINE SEQUENTIAL CONTROL SYSTEM COMPRISING: FIRST DISCHARGE MEANS FOR DISCHARGING A FIRST BIPROPELLANT LIQUID CONSTITUENT; SECOND DISCHARGE MEANS FOR DISCHARGING A SECOND BIPROPELLANT LIQUID CONSTITUENT; FIRST AND SECOND VALVE MEANS OPERATIVELY CONNECTED TO SAID FIRST AND SECON DISCHARGE MEANS RESPECTIVELY, INITIALLY REMAINING IN A CLOSED POSITION AND ADAPTED TO SEQUENTIALLY OPEN AT A PREDETERMINED DISCHARGE PRESSURE OF SAID SECOND LIQUID CONSTITUENT SAID SECOND VALVE MEANS BEING CONSTRUCTED AND ARRANGED TO BE STRUCTURALLY INDEPENDENT IN ITS OPERATION FROM SAID FIRST VALVE MEANS; SENSING MEANS OPERTIVELY CONNECTING SAID SECOND DISCHARGE MEANS AND SAID FIRST VALVE MEANS FOR OPENING THE FIRST VALVE MEANS WHEN THE FIRST VALVE MEANS SENSES SAID PREDETERMINED PRESSURE OF SAID SECOND LIQUID CONSTITUENT; SEQUENCE VALVE MEANS OPERATIVELY CONNECTED TO SAID FIRST VALVE MEANS, SAID SECOND VALVE MEANS AND SAID SENSING
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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) | 1967-06-16 | 1967-12-16 | 1968-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-16 | 1971-12-16 | 1972-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-16 | 1975-12-16 | 1976-06-16 | $7700.00 | Window Closed / Lapsed |