Patent US3237401A successfully refreshed from Google Patents.
US3237401A
Expired / Lapsed
US
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Regenerative expander engine
Assignee: RTX Corp
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Filing: 1958-01-17
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Granted: 1966-03-01
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Expires: 1978-01-17
Abstract
No abstract record available.
Inventors
- 👤 George T Peters
- 👤 Ned C Rice
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:17
CPC Classifications
F; F02; F02C; F02C1/00; F02C1/007; F02C7/00; F02C7/22; F02C7/224; F02K; F02K3/00; Y; Y02; Y02T; Y02T50/00; Y02T50/60
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
145 words
IN A TURBINE TYPE POWER PLANT HAVING AN AIR INLET, A DUCT LEADING FROM SAID INLET AND HAVING AN AIRSTREAM FLOWING THERETHROUGH, A FAN IN SAID DUCT FOR ADDING ENERGY TO THE AIR IN SAID DUCT, A COMBUSTION SECTION RECEIVING AIR FROM SAID DUCT, A TURBINE SHIELDED FROM SAID AIRSTREAM FOR DRIVING SAID FAN, A SOURCE OF FUEL, A MAIN HEAT EXCHANGER ADJACENT TO SAID COMBUSTION SECTION WHICH RECEIVES FUEL FROM SAID SOURCE FOR ADDING HEAT THERETO, MEANS FOR CONDUCTING FUEL FROM SAID HEAT EXCHANGER AND THROUGH SAID TURBINE FOR DRIVING SAID TURBINE, AN EXHAUST DUCT FROM SAID TURBINE AND DISCHARGING ONLY FUEL INTO SAID COMBUSTION CHAMBER, AND A REGENERATIVE HEAT EXCHANGER IN SAID EXHAUST DUCT BUT SHIELDED FROM THE AIRSTREAM AND LOCATED UPSTREAM OF SAID POINT OF DISCHARGE, SAID REGENERATIVE HEAT EXCHANGER CONDUCTING FLOW OF FUEL FROM SAID SOURCE TO SAID FIRST HEAT EXCHANGER.
Claim 2
Dependent Claim
145 words
IN A TURBINE TYPE POWER PLANT HAVING AN AIR INLET, A DUCT LEADING FROM SAID INLET AND HAVING AN AIRSTREAM FLOWING THERETHROUGH, A FAN IN SAID DUCT FOR ADDING ENERGY TO THE AIR IN SAID DUCT, A COMBUSTION SECTION RECEIVING AIR FROM SAID DUCT, A TURBINE SHIELDED FROM SAID AIRSTREAM FOR DRIVING SAID FAN, A SOURCE OF FUEL, A MAIN HEAT EXCHANGER ADJACENT TO SAID COMBUSTION SECTION WHICH RECEIVES FUEL FROM SAID SOURCE FOR ADDING HEAT THERETO, MEANS FOR CONDUCTING FUEL FROM SAID HEAT EXCHANGER AND THROUGH SAID TURBINE FOR DRIVING SAID TURBINE, AN EXHAUST DUCT FROM SAID TURBINE AND DISCHARGING ONLY FUEL INTO SAID COMBUSTION CHAMBER, AND A REGENERATIVE HEAT EXCHANGER IN SAID EXHAUST DUCT BUT SHIELDED FROM THE AIRSTREAM AND LOCATED UPSTREAM OF SAID POINT OF DISCHARGE, SAID REGENERATIVE HEAT EXCHANGER CONDUCTING FLOW OF FUEL FROM SAID SOURCE TO SAID FIRST HEAT EXCHANGER.
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) | 1969-02-28 | 1969-08-30 | 1970-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-28 | 1973-08-30 | 1974-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-28 | 1977-08-30 | 1978-03-01 | $7700.00 | Window Closed / Lapsed |