US3168807A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nuclear rocket flow control
Assignee: RTX Corp
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Filing: 1961-08-08
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Granted: 1965-02-09
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Expires: 1981-08-08
Abstract
No abstract record available.
Inventors
- 👤 Walter A Ledwith
- 👤 Trent H Holmes
- 👤 Robert H Shaw
- 👤 Russell A Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:37
CPC Classifications
G; G21; G21D; G21D5/00; G21D5/02; Y; Y02; Y02E; Y02E30/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
170 words
IN A PROPELLANT FLOW AND CONTROL SYSTEM FOR A ROCKET ENGINE HAVING A THRUST CHAMBER AND A COOLING JACKET SURROUNDING SAID THRUST CHAMBER, A SOURCE OF PROPELLANT, MEANS FOR PUMPING SAID PROPELLANT INCLUDING A TWO-STAGE PUMP, MEANS FOR DRIVING SAID PUMPING MEANS, MEANS FOR DELIVERING A FIRST PART OF SAID PROPELLANT FROM SAID SECOND STAGE OF SAID PUMPING MEANS TO SAID COOLING JACKET, MEANS COMMUNICATING WITH SAID COOLING JACKET TO RECEIVE SAID FIRST PART THEREFROM, MEANS FOR DELIVERING A SECOND PART OF SAID PROPELLANT FROM SAID FIRST STAGE OF SAID PUMPING MEANS TO SAID RECEIVING MEANS TO MIX SAID FIRST AND SECOND PARTS, MEANS INCLUDING HEATING MEANS FOR DELIVERING SAID MIXTURE TO SAID THRUST CHAMBER AT AN INCREASED TEMPERATURE, ME ANS FOR BLEEDING A PART OF SAID MIXTURE UPSTREAM OF SAID HEATING MEANS, MEANS FOR BLEEDING A PART OF SAID MIXTURE FROM SAID THRUST CHAMBER, AND MEANS FOR MIXING SAID BLED PARTS AND DELIVERING SAID MIXTURE OF BLED PARTS TO SAID PUMP DRIVING MEANS TO POWER SAID PUMP DRIVING MEANS.
Claim 2
Dependent Claim
170 words
IN A PROPELLANT FLOW AND CONTROL SYSTEM FOR A ROCKET ENGINE HAVING A THRUST CHAMBER AND A COOLING JACKET SURROUNDING SAID THRUST CHAMBER, A SOURCE OF PROPELLANT, MEANS FOR PUMPING SAID PROPELLANT INCLUDING A TWO-STAGE PUMP, MEANS FOR DRIVING SAID PUMPING MEANS, MEANS FOR DELIVERING A FIRST PART OF SAID PROPELLANT FROM SAID SECOND STAGE OF SAID PUMPING MEANS TO SAID COOLING JACKET, MEANS COMMUNICATING WITH SAID COOLING JACKET TO RECEIVE SAID FIRST PART THEREFROM, MEANS FOR DELIVERING A SECOND PART OF SAID PROPELLANT FROM SAID FIRST STAGE OF SAID PUMPING MEANS TO SAID RECEIVING MEANS TO MIX SAID FIRST AND SECOND PARTS, MEANS INCLUDING HEATING MEANS FOR DELIVERING SAID MIXTURE TO SAID THRUST CHAMBER AT AN INCREASED TEMPERATURE, ME ANS FOR BLEEDING A PART OF SAID MIXTURE UPSTREAM OF SAID HEATING MEANS, MEANS FOR BLEEDING A PART OF SAID MIXTURE FROM SAID THRUST CHAMBER, AND MEANS FOR MIXING SAID BLED PARTS AND DELIVERING SAID MIXTURE OF BLED PARTS TO SAID PUMP DRIVING MEANS TO POWER SAID PUMP DRIVING MEANS.
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) | 1968-02-09 | 1968-08-10 | 1969-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-09 | 1972-08-10 | 1973-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-09 | 1976-08-10 | 1977-02-09 | $7700.00 | Window Closed / Lapsed |