Patent US3613374A successfully refreshed from Google Patents.
US3613374A
Expired / Lapsed
US
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Thrust-termination nozzle for a solid-propellant rocket engine
Assignee: ATK Launch Systems LLC
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Filing: 1958-06-24
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Granted: 1971-10-19
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Expires: 1978-06-24
Abstract
Abstract 1. THE METHOD OF TERMINATING, IN FLIGHT, THE THRUST GENERATED BY THE BURNING OF A SOLID PROPELLANT CHARGE IN A ROCKET ENGINE COMPRISING A CASING TERMINATING IN REARWARD PORTIONS IN A CONSTRICTED THROAT AND HAVING A DETACHABLE NOZZLE OF CROSS-SECTIONAL AREA SMALLER THAN THE CONSTRICTED THROAT OF SAID CASING, SAID DETACHABLE NOZZLE BEING POSITIONED WITHIN SAID THROAT, WHICH METHOD COMPRISES DETACHING SAID NOZZLE FROM SAID CASING WHILE SAID PROPELLANT IS BURNING, THUS SUDDENLY INCREASING THE AREA FOR ESCAPING GASES, WHEREBY THE PRESSURE IN SAID CASING IS SUBDENLY REDUCED AND SAID PROPELLANT IS THEREBY EXTINGUISHED.
Inventors
- 👤 Harold W Ritchey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 02:04
CPC Classifications
F; F02; F02K; F02K9/00; F02K9/80; F02K9/92; F02K9/97; F02K9/978; F42; F42B; F42B15/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-10-18 | 1975-04-19 | 1975-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-18 | 1979-04-19 | 1979-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-18 | 1983-04-19 | 1983-10-19 | $7700.00 | Window Closed / Lapsed |