US3070565A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for improved thrust cut-off
Assignee: Northrop Grumman Space and Mission Systems Corp
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Filing: 1959-06-10
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Granted: 1962-12-25
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Expires: 1979-06-10
Abstract
No abstract record available.
Inventors
- 👤 Roy A Mckinnon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:50
CPC Classifications
F; F02; F02K; F02K9/00; F02K9/70
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
IN A GELATINOUS MONOPROPELLANT FUELED ROCKET ENGINE, AN EXTRUSION MEMBER HAVING FIRST AND SECOND SETS OF ORIFICES THEREIN, A CUT-OFF MEMBER HAVING A THIRD SET OF ORIFICES THEREIN AND BEING MOUNTED IN CONTACT WITH THE EXTRUSION MEMBER FOR MOVEMENT BETWEEN FIRST AND SECOND POSITIONS WITH RESPECT TO SAID EXTRUSION MEMBER, SAID THIRD SET OF ORIFICES BEING COALIGNED WITH SAID FIRST SET OF ORIFICES IN SAID FIRST POSITION AND WITH SAID SECOND SET OF ORIFICES IN SAID SECOND POSITION, MEANS TO EXTURDE A GELATINOUS FUEL THROUGH SAID FIRST AND THIRD SETS OF ORIFICES, AND MEANS TO EXTRUDE AN INERT CLEANING MATERIAL THROUGH SAID SECOND AND THIRD SETS OF ORIFICES TO REMOVE RESIDUAL FUEL FROM SAID THIRD SET OF ORIFICES WHEN SAID CUT-OFF MEMBER IS MOVED FROM SAID FIRST TO SAID SECOND POSITION.
Claim 2
Dependent Claim
131 words
IN A GELATINOUS MONOPROPELLANT FUELED ROCKET ENGINE, AN EXTRUSION MEMBER HAVING FIRST AND SECOND SETS OF ORIFICES THEREIN, A CUT-OFF MEMBER HAVING A THIRD SET OF ORIFICES THEREIN AND BEING MOUNTED IN CONTACT WITH THE EXTRUSION MEMBER FOR MOVEMENT BETWEEN FIRST AND SECOND POSITIONS WITH RESPECT TO SAID EXTRUSION MEMBER, SAID THIRD SET OF ORIFICES BEING COALIGNED WITH SAID FIRST SET OF ORIFICES IN SAID FIRST POSITION AND WITH SAID SECOND SET OF ORIFICES IN SAID SECOND POSITION, MEANS TO EXTURDE A GELATINOUS FUEL THROUGH SAID FIRST AND THIRD SETS OF ORIFICES, AND MEANS TO EXTRUDE AN INERT CLEANING MATERIAL THROUGH SAID SECOND AND THIRD SETS OF ORIFICES TO REMOVE RESIDUAL FUEL FROM SAID THIRD SET OF ORIFICES WHEN SAID CUT-OFF MEMBER IS MOVED FROM SAID FIRST TO SAID SECOND POSITION.
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) | 1965-12-24 | 1966-06-25 | 1966-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-24 | 1970-06-25 | 1970-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-24 | 1974-06-25 | 1974-12-25 | $7700.00 | Window Closed / Lapsed |