US3122883A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat resistant wall structure for rocket motor nozzles and the like
Assignee: Northrop Grumman Space and Mission Systems Corp
•
Filing: 1959-11-20
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Granted: 1964-03-03
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Expires: 1979-11-20
Abstract
No abstract record available.
Inventors
- 👤 Terner Edward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:50
CPC Classifications
F; F02; F02K; F02K9/00; F02K9/97; F02K9/974; F16; F16L; F16L59/00; F16L59/12; Y; Y10; Y10S; Y10S428/00; Y10S428/92; Y10S60/00; Y10S60/909; Y10T; Y10T29/00; Y10T29/49; Y10T29/49346; Y10T428/00; Y10T428/13; Y10T428/131; Y10T428/1317; Y10T428/24; Y10T428/24273; Y10T428/24322; Y10T428/24331; Y10T428/249921; Y10T428/249953; Y10T428/249967; Y10T428/24997
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
A HEAT RESISTANT WALL STRUCTURE FRO WITHSTANDING THE EFFECTS OF HIGH TEMPERATURE GAS STREAMS WHICH COMPRISES AN OUTER STRESS RESISTANT IMPERFORATE WALL, AN INNER WALL IN SPACED RELATION TO SAID OUTER WALL, SAID INNER WALL COMPRISING A PERFORATE REFRACTORY MATRIX, AN INSULATING LAYER INTERMEDIATE SAID INNER WALL SAID INNER WALL, AND A LAYER OF SOLID HEAT VAPORIZABLE MATERIAL DISPOSED ON EACH SIDE OF SAID INSULATING LAYER, SAID HEAT VAPORIZABLE MATERIAL BEING CAPABLE OF A PHASE CHANGE AT A TEMPERATURE LESS THAN THE MELTING TEMPERATURE OF SAID INNER WALL SO THAT SAID HEAT VAPORIZABLE MATERIAL MAY FLOW ALONG SAID INNER WALL, AND SAID INSULATING LAYER HAVING A THERMAL CONDUCTIVITY SUBSTANTIALLY LOWER THAN THAT OF THE HEAT VAPORIZABLE MATERIAL.
Claim 2
Dependent Claim
117 words
A HEAT RESISTANT WALL STRUCTURE FRO WITHSTANDING THE EFFECTS OF HIGH TEMPERATURE GAS STREAMS WHICH COMPRISES AN OUTER STRESS RESISTANT IMPERFORATE WALL, AN INNER WALL IN SPACED RELATION TO SAID OUTER WALL, SAID INNER WALL COMPRISING A PERFORATE REFRACTORY MATRIX, AN INSULATING LAYER INTERMEDIATE SAID INNER WALL SAID INNER WALL, AND A LAYER OF SOLID HEAT VAPORIZABLE MATERIAL DISPOSED ON EACH SIDE OF SAID INSULATING LAYER, SAID HEAT VAPORIZABLE MATERIAL BEING CAPABLE OF A PHASE CHANGE AT A TEMPERATURE LESS THAN THE MELTING TEMPERATURE OF SAID INNER WALL SO THAT SAID HEAT VAPORIZABLE MATERIAL MAY FLOW ALONG SAID INNER WALL, AND SAID INSULATING LAYER HAVING A THERMAL CONDUCTIVITY SUBSTANTIALLY LOWER THAN THAT OF THE HEAT VAPORIZABLE MATERIAL.
References Cited (Backward Citations)
US1187779A
Cited
US2183313A
Cited
US2354151A
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US2405785A
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US2407164A
Cited
US2574190A
Cited
US2468820A
Cited
FR1003758A
Cited
US2658332A
Cited
US2705399A
Cited
FR1108090A
Cited
US2943828A
Cited
US2941759A
Cited
US3026806A
Cited
US2908455A
Cited
US3048972A
Cited
US2922291A
Cited
US2962221A
Cited
US3014353A
Cited
US3022190A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-03-03 | 1967-09-02 | 1968-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-03-03 | 1971-09-02 | 1972-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-03-03 | 1975-09-02 | 1976-03-03 | $7700.00 | Window Closed / Lapsed |