Patent US3049870A successfully refreshed from Google Patents.
US3049870A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rocket propellant cycle
Assignee: RTX Corp
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Filing: 1960-04-14
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Granted: 1962-08-21
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Expires: 1980-04-14
Abstract
No abstract record available.
Inventors
- 👤 Chamberlain John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:45
CPC Classifications
F; F02; F02K; F02K9/00; F02K9/42; F02K9/44; F02K9/46; F02K9/48
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
IN OPERATION OF A LIQUID FUEL ROCKET HAVING AN INJECTOR HEAD AND A NOZZLE WALL AND USING A LOW BOILING POINT FUEL AND IN WHICH THAT FUEL IS USED TO COOL THE NOZZLE WALL AND IS THEREBY HEATED TO SUPPLY ENERGY TO A TURBINE, THE STEPS OF HEATING THE FUEL BEFORE IT IS USED FOR COOLING THE NOZZLE WALL SO THAT THE FUEL WILL BE ADDITIONALLY HEATED BY NOZZLE WALL COOLING AND IS ACCORDINGLY HOTTER WHEN IT REACHES THE TURBINE AND A THER STEP OF USING
Claim 2
Dependent Claim
86 words
IN OPERATION OF A LIQUID FUEL ROCKET HAVING AN INJECTOR HEAD AND A NOZZLE WALL AND USING A LOW BOILING POINT FUEL AND IN WHICH THAT FUEL IS USED TO COOL THE NOZZLE WALL AND IS THEREBY HEATED TO SUPPLY ENERGY TO A TURBINE, THE STEPS OF HEATING THE FUEL BEFORE IT IS USED FOR COOLING THE NOZZLE WALL SO THAT THE FUEL WILL BE ADDITIONALLY HEATED BY NOZZLE WALL COOLING AND IS ACCORDINGLY HOTTER WHEN IT REACHES THE TURBINE AND A THER STEP OF USING
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) | 1965-08-20 | 1966-02-19 | 1966-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-20 | 1970-02-19 | 1970-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-20 | 1974-02-19 | 1974-08-21 | $7700.00 | Window Closed / Lapsed |