US3211534A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Exhaust control apparatus
Assignee: Northrop Grumman Space and Mission Systems Corp
•
Filing: 1963-12-19
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Granted: 1965-10-12
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Expires: 1983-12-19
Abstract
No abstract record available.
Inventors
- 👤 Stuart L Ridgway
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:58
CPC Classifications
F; F01; F01N; F01N3/00; F01N3/02; F01N3/0205; F01N13/00; F01N13/009; F01N3/08; F01N3/10; F01N3/18; F01N3/20; F01N3/206; F01N3/24; F01N3/26; F01N3/30; F01N3/306; F01N2240/00; F01N2240/02; F01N2240/12; F01N2430/00; F01N2430/04; F01N2610/00; F01N2610/01; F01N3/38; Y; Y10; Y10T; Y10T137/00; Y10T137/5544; Y10T137/5689
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
SELF-SUSTAINED UNBURNED EXHAUST GAS CONTROL APPARATUS, COMPRISING: GAS INLET MEANS CONNECTED TO RECEIVE UNBURNED EXHAUST GAS AND AIR FOR MIXING SAID EXHAUST GAS AND SAID AIR; BURNED EXHAUST GAS OUTLET MEANS; A SINGLE EXHAUST GAS BURNER HAVING PORTIONS DEFINING TWO GAS TRANSFER PASSAGES; TWO SUBSTANTIALLY LAMINAR FLOW HEAT EXCHANGE MEMBERS EACH CONSTRUCTED TO PRESERVE GAS FLOWING THERETHROUGH FROM FREQUENT GAS FLOW ACCELERATION AND EACH CONNECTED TO ONE OF SAID GAS TRANSFER LPASSAGES, WITH SAID BURNER SERIALLY CONNECTED INTERMEDIATE SAID MEMBERS; AND SWITCHING MEANS CONNECTED PERIODICALLY FIRST AND SUBSTANTIALLY SIMULTANEOUSLY TO COUPLE ONE OF SAID MEM-
Claim 2
Dependent Claim
95 words
SELF-SUSTAINED UNBURNED EXHAUST GAS CONTROL APPARATUS, COMPRISING: GAS INLET MEANS CONNECTED TO RECEIVE UNBURNED EXHAUST GAS AND AIR FOR MIXING SAID EXHAUST GAS AND SAID AIR; BURNED EXHAUST GAS OUTLET MEANS; A SINGLE EXHAUST GAS BURNER HAVING PORTIONS DEFINING TWO GAS TRANSFER PASSAGES; TWO SUBSTANTIALLY LAMINAR FLOW HEAT EXCHANGE MEMBERS EACH CONSTRUCTED TO PRESERVE GAS FLOWING THERETHROUGH FROM FREQUENT GAS FLOW ACCELERATION AND EACH CONNECTED TO ONE OF SAID GAS TRANSFER LPASSAGES, WITH SAID BURNER SERIALLY CONNECTED INTERMEDIATE SAID MEMBERS; AND SWITCHING MEANS CONNECTED PERIODICALLY FIRST AND SUBSTANTIALLY SIMULTANEOUSLY TO COUPLE ONE OF SAID MEM-
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) | 1968-10-11 | 1969-04-12 | 1969-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-11 | 1973-04-12 | 1973-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-11 | 1977-04-12 | 1977-10-12 | $7700.00 | Window Closed / Lapsed |