Patent US3226929A successfully refreshed from Google Patents.
US3226929A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High temperature nozzle
Assignee: Kennametal Inc
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Filing: 1962-07-31
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Granted: 1966-01-04
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Expires: 1982-07-31
Abstract
No abstract record available.
Inventors
- 👤 Philip M Mckenna
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:16
CPC Classifications
F; F02; F02K; F02K9/00; F02K9/97; F02K9/974
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
134 words
A NOZZLE ELEMENT FOR A ROCKET MOTOR OR THE LIKE PROPULSION UNIT EXPOSED IN USE TO EXTREMELY HIGH TEMPERATURES AND THE EROSIVE ACTION OF HIGH VELOCITY PRODUCTS OF COMBUSTION OF HIGH ENERGY FUEL USED, AT LEAST THE INTERNAL SURFACE OF SAID NOZZLE BEING A BONDED COMPOSITION OF AN INTIMATE MIXTURE OF (1) A FINELY DIVIDED CARBURIZED TUNGSTEN CONSITUTENT, AND (2) AT LEAST ONE FINELY DIVIDED METAL OF THE GROUP CONSISTING OF TANTALUM AND NIOBIUM, SAID TUNGSTEN CONSTITUENT AND SAID METAL INTERACTING UPON PASSAGE OF SAID PRODUCTS OF COMBUSTION AT A TEMPERATURE OF THE ORDER OF 5000*F. AND HIGHER WITH CONVERSION OF SAID METAL TO A PHASE OF ITS CARBIDE AT AND ADJACENT THE INTERNAL SURFACE OF THE NOZZLE WITH CONCURRENT PRODUCTION OF TUNGSTEN METAL AND SUBSTANTIAL INCREASE IN MELTING POINT OF THE THUS-CONVERTED COMPOSITION.
Claim 2
Dependent Claim
134 words
A NOZZLE ELEMENT FOR A ROCKET MOTOR OR THE LIKE PROPULSION UNIT EXPOSED IN USE TO EXTREMELY HIGH TEMPERATURES AND THE EROSIVE ACTION OF HIGH VELOCITY PRODUCTS OF COMBUSTION OF HIGH ENERGY FUEL USED, AT LEAST THE INTERNAL SURFACE OF SAID NOZZLE BEING A BONDED COMPOSITION OF AN INTIMATE MIXTURE OF (1) A FINELY DIVIDED CARBURIZED TUNGSTEN CONSITUTENT, AND (2) AT LEAST ONE FINELY DIVIDED METAL OF THE GROUP CONSISTING OF TANTALUM AND NIOBIUM, SAID TUNGSTEN CONSTITUENT AND SAID METAL INTERACTING UPON PASSAGE OF SAID PRODUCTS OF COMBUSTION AT A TEMPERATURE OF THE ORDER OF 5000*F. AND HIGHER WITH CONVERSION OF SAID METAL TO A PHASE OF ITS CARBIDE AT AND ADJACENT THE INTERNAL SURFACE OF THE NOZZLE WITH CONCURRENT PRODUCTION OF TUNGSTEN METAL AND SUBSTANTIAL INCREASE IN MELTING POINT OF THE THUS-CONVERTED COMPOSITION.
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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) | 1969-01-03 | 1969-07-05 | 1970-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-03 | 1973-07-05 | 1974-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-03 | 1977-07-05 | 1978-01-04 | $7700.00 | Window Closed / Lapsed |