US3137995A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ablation resistant reaction propulsion nozzle
Assignee: CHEMICAL ENGINEERING Department
•
Filing: 1960-01-26
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Granted: 1964-06-23
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Expires: 1980-01-26
Abstract
No abstract record available.
Inventors
- 👤 Donald F Othmer
- 👤 Brenner Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:13
CPC Classifications
F; F02; F02K; F02K9/00; F02K9/97; F02K9/974; Y; Y10; Y10S; Y10S60/00; Y10S60/909; Y10T; Y10T29/00; Y10T29/49; Y10T29/49346; Y10T29/4981
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
88 words
AS A NEW ARTICLE OF MANUFACTURE, A REACTION PROPULSION NOZZLE HAVING A HIGH RESISTANCE TO HARMFUL ABLATION AND THERMAL SHOCK, SAID NOZZLE COMPRISING AN INNER SURFACE PORTION CONSTITUTED BY A POROUS METALLIC MASS HAVING A MOLDED BODY OF INTERENGAGED METALLIC FILAMENTS, SAID PORES CONSTIUTING 50-80% OF THE VOLUME OF SAID BODY AND BEING AT LEAST PREDOMINANTLY FILLED WITH A MATERIAL SOLID AT AMBIENT TEMPERATURES SELECTED FROM THE GROUP CONSISTING OF LITHIUM, LITHIUM HYDRIDE, BERYLLIUM, BERYLLIUM HYDRIDE, MAGNESIUM, MAGNESIUM HYDRIDE, CALCIUM, CALCIUM HYDRIDE AND BORON, SAID MATERIAL BEING CONVERTIBLE
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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) | 1967-06-23 | 1967-12-23 | 1968-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-23 | 1971-12-23 | 1972-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-23 | 1975-12-23 | 1976-06-23 | $7700.00 | Window Closed / Lapsed |