US3137130A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable thrust liquid propellant rocket injector
Assignee: RTX Corp
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Filing: 1961-07-25
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Granted: 1964-06-16
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Expires: 1981-07-25
Abstract
No abstract record available.
Inventors
- 👤 Albert D Tinkelenberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:36
CPC Classifications
F; F02; F02K; F02K9/00; F02K9/42; F02K9/44; F02K9/52; F02K9/56; F02K9/58
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
111 words
A VARIABLE THRUST LIQUID PROPELLANT ROCKET INJECTOR WHICH IS OF GENERALLY CIRCULAR CROSS-SECTION AND CONCENTRIC ABOUT AN AXIS AND COMMUNICATES WITH A COMBUSTION CHAMBER AND WHICH COMPRISES A PLURALITY OF PROPELLANT FLOW CONDUIT DEFINING APPARATUS HAVING AN OUTER PERIPHERY INCLUDING SIDES, A TOP AND A BOTTOM AND POSITIONED CONCENTRICALLY ABOUT SAID AXIS AND DEFINING A PLURALITY OF BOTH LIQUID OXIDIZER AND LIQUID FUEL PASSAGES OPENING INTO SAID COMBUSTION CHAMBER AND, MEANS TO PROVIDE LIQUID FUEL AND LIQUID OXIDIZER TO THE RESPECTIVE PASSAGES, AND MEANS TO SEQUENTIALLY VARY THE AREA OF AND HENCE THE FLOW THROUGH SAID FUEL AND OXIDIZER PASSAGES THEREBY CONTROLLING OXIDIZER TO FUEL RATIO AT ALL PROPELLANT FLOW LEVELS.
Claim 2
Dependent Claim
111 words
A VARIABLE THRUST LIQUID PROPELLANT ROCKET INJECTOR WHICH IS OF GENERALLY CIRCULAR CROSS-SECTION AND CONCENTRIC ABOUT AN AXIS AND COMMUNICATES WITH A COMBUSTION CHAMBER AND WHICH COMPRISES A PLURALITY OF PROPELLANT FLOW CONDUIT DEFINING APPARATUS HAVING AN OUTER PERIPHERY INCLUDING SIDES, A TOP AND A BOTTOM AND POSITIONED CONCENTRICALLY ABOUT SAID AXIS AND DEFINING A PLURALITY OF BOTH LIQUID OXIDIZER AND LIQUID FUEL PASSAGES OPENING INTO SAID COMBUSTION CHAMBER AND, MEANS TO PROVIDE LIQUID FUEL AND LIQUID OXIDIZER TO THE RESPECTIVE PASSAGES, AND MEANS TO SEQUENTIALLY VARY THE AREA OF AND HENCE THE FLOW THROUGH SAID FUEL AND OXIDIZER PASSAGES THEREBY CONTROLLING OXIDIZER TO FUEL RATIO AT ALL PROPELLANT FLOW LEVELS.
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) | 1967-06-16 | 1967-12-16 | 1968-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-16 | 1971-12-16 | 1972-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-16 | 1975-12-16 | 1976-06-16 | $7700.00 | Window Closed / Lapsed |