US3172253A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combination turbo and ramjet propulsion apparatus
Assignee: Garrett Corp
•
Filing: 1959-01-02
•
Granted: 1965-03-09
•
Expires: 1979-01-02
Abstract
No abstract record available.
Inventors
- 👤 Schelp Helmut Rudolf
- 👤 Hughes Frederick Ambrose
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:22
CPC Classifications
F; F02; F02K; F02K1/00; F02K1/06; F02K1/15; F02K1/16; F02K1/165; F02K7/00; F02K7/10; F02K7/16; Y; Y10; Y10T; Y10T137/00; Y10T137/0536
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
PROPULSION APPARATUS COMPRISING: INNER AND OUTER SHELLS DISPOSED TO FORM A RAMJET PASSAGE OPEN AT ITS FORWARD END TO RECEIVE RAM AIR AND HAVING A CONVERGING-DIVERGING JET NOZZLE AT THE REAR END, SAID NOZZLE HAVING A THROAT BETWEEN THE CONVERGING AND DIVERGING PORTIONS; A TURBOJET ENGINE DISPOSED IN SAID INNER SHELL, THE LATTER HAVING AN INLET FOR AIR AT ITS FORWARD END AND A CONVERGING JET NOZZLE AT THE REAR END, SAID CONVERGING JET NOZZLE COMMUNICATING WITH SAID RAMJET PASSAGE ADJACENT THE THROAT OF SAID RAMJET NOZZLE AND DIRECTING THE TURBOJET ENGINE EXHAUST THERETHROUGH TO INDUCE AIR FLOW THROUGH SAID RAMJET PASSAGE; AND COMBUSTOR MEANS DISPOSED IN SAID RAMJET PASSAGE UPSTREAM FROM THE POINT OF COMMUNICATION OF SAID TURBOJET ENGINE NOZZLE THEREWITH.
Claim 2
Dependent Claim
122 words
PROPULSION APPARATUS COMPRISING: INNER AND OUTER SHELLS DISPOSED TO FORM A RAMJET PASSAGE OPEN AT ITS FORWARD END TO RECEIVE RAM AIR AND HAVING A CONVERGING-DIVERGING JET NOZZLE AT THE REAR END, SAID NOZZLE HAVING A THROAT BETWEEN THE CONVERGING AND DIVERGING PORTIONS; A TURBOJET ENGINE DISPOSED IN SAID INNER SHELL, THE LATTER HAVING AN INLET FOR AIR AT ITS FORWARD END AND A CONVERGING JET NOZZLE AT THE REAR END, SAID CONVERGING JET NOZZLE COMMUNICATING WITH SAID RAMJET PASSAGE ADJACENT THE THROAT OF SAID RAMJET NOZZLE AND DIRECTING THE TURBOJET ENGINE EXHAUST THERETHROUGH TO INDUCE AIR FLOW THROUGH SAID RAMJET PASSAGE; AND COMBUSTOR MEANS DISPOSED IN SAID RAMJET PASSAGE UPSTREAM FROM THE POINT OF COMMUNICATION OF SAID TURBOJET ENGINE NOZZLE THEREWITH.
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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) | 1968-03-08 | 1968-09-07 | 1969-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-08 | 1972-09-07 | 1973-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-08 | 1976-09-07 | 1977-03-09 | $7700.00 | Window Closed / Lapsed |