EP1510682A3

Gas turbine engine with counter-rotating fan blades

Abstract

An exemplary embodiment of a FLADE (fan on blade) counter-rotating fan aircraft gas turbine engine includes at least one row of FLADE fan blades (5) disposed radially outwardly of and drivingly connected to one of axially spaced-apart first and second counter-rotatable fans (130 and 132). A core engine (18) located downstream and axially aft of the first and second counter-rotatable fans (130 and 132) is circumscribed by a fan bypass duct (40) downstream and axially aft of the first and second counter-rotatable fans (130 and 132). The row of FLADE fan blades (5) radially extend across a FLADE duct (3) circumscribed about the first and second counter-rotatable fans (130 and 132) and the fan bypass duct (40). A second low pressure turbine (21) is drivingly connected to the first counter-rotatable fan (130) and a first low pressure turbine (19) is drivingly connected to the second counter-rotatable fan (132).

EP1510682A3, drawing sheet 1 — Sheet 1 of 1

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Projected expiry passed 18 June 2024, 2.3 years ago.

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Citations
Document	Relation	Office	Category	Cited during	Relevant claims
EP0567277A1	Cites	European Patent Office (EPO)	DA	Search report	1,3
EP0646720A1	Cites	European Patent Office (EPO)	DY	Search report	1-10
EP0952330A2	Cites	European Patent Office (EPO)	A	Search report	1
US3867813A	Cites	United States of America	A	Search report	1
US4790133A	Cites	United States of America	Y	Search report	1-10
"PRATT, GE STUDY FIVE ENGINE CONCEPTS TO POWER HIGH-SPEED CIVIL TRANSPORT", AVIATION WEEK AND SPACE TECHNOLOGY, MCGRAW-HILL COMPAGNY, NEW YORK, NY, US, vol. 135, no. 21, 25 November 1991 (1991-11-25), pages 61, XP000320641, ISSN: 0005-2175	Non-patent	–	–	Search report	–

7 members in 3 offices; this record represents the family

This recordMember, by publication datePriority claim

Priority claims2

Priority claims
Document	Office	Kind	Date
647881	United States of America	–	2003-08-25
64788103	United States of America	A	2003-08-25

Members7

Family members, oldest first
Document	Office	Kind
EP1510682A2	European Patent Office (EPO)	A2	2005-03-02
US2005047942A1	United States of America	A1	2005-03-03
JP2005069222A	Japan	A	2005-03-17
US7246484B2	United States of America	B2	2007-07-24
EP1510682A3This record	European Patent Office (EPO)	A3	2009-03-18
EP1510682B1	European Patent Office (EPO)	B1	2011-10-05
JP4856366B2	Japan	B2	2012-01-18

38 legal events, as 5 offices reported them to INPADOC

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	Event	Code	Office
2022-07-29	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2022-06-01	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2022-06-01	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2022-04-29	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2022-04-29	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2022-02-23	Gb: european patent ceased through non-payment of renewal feeCeasedGBPC	GBPC	EP
2022-01-25	Ep patent has lapsedLapsedEUG	EUG	SE
2022-01-01	Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal feeWithdrawnR119	R119	DE
2020-08-31	Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP	PGFP	EP
2020-08-31	Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP	PGFP	EP
2020-08-31	Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP	PGFP	EP
2020-07-31	Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP	PGFP	EP
2020-07-31	Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP	PGFP	EP
2018-06-26	Fee paymentPLFP	PLFP	FR
2017-06-27	Fee paymentPLFP	PLFP	FR
2016-06-28	Fee paymentPLFP	PLFP	FR
2012-10-31	No opposition filed against granted patent, or epo opposition proceedings concluded without decisionGrantedR097	R097	DE
2012-09-12	No opposition filedOpposition26N	26N	EP
2012-08-10	No opposition filed within time limitOppositionORIGINAL CODE: 0009261PLBE	PLBE	EP
2012-08-10	Information on the status of an ep patent application or granted ep patentGrantedSTATUS: NO OPPOSITION FILED WITHIN TIME LIMITSTAA	STAA	EP
2011-12-20	Translation of granted ep patentGrantedTRGR	TRGR	SE
2011-12-15	Dpma publication of mentioned ep patent grantGrantedR096	R096	DE
2011-10-05	Designated contracting statesAK	AK	EP
2011-10-05	European patent grantedGrantedFG4D	FG4D	GB
2011-09-14	Information on inventor provided before grant (corrected)RIN1	RIN1	EP
2011-09-14	Information on inventor provided before grant (corrected)RIN1	RIN1	EP
2011-09-02	(expected) grantORIGINAL CODE: 0009210GRAA	GRAA	EP
2011-08-11	Grant fee paidORIGINAL CODE: EPIDOSNIGR3GRAS	GRAS	EP
2011-03-18	Despatch of communication of intention to grant a patentORIGINAL CODE: EPIDOSNIGR1GRAP	GRAP	EP
2010-01-06	First examination report despatched17Q	17Q	EP
2009-11-25	Designation fees paidAKX	AKX	EP
2009-10-28	Request for examination filed17P	17P	EP
2009-03-18	Designated contracting statesAK	AK	EP
2009-03-18	Request for extension of the european patentAX	AX	EP
2009-02-13	Search report despatchedORIGINAL CODE: 0009013PUAL	PUAL	EP
2005-03-02	Designated contracting statesAK	AK	EP
2005-03-02	Request for extension of the european patentAX	AX	EP
2005-01-14	Public reference made under article 153(3) epc to a published international application that has entered the european phaseORIGINAL CODE: 0009012PUAI	PUAI	EP

Gas turbine engine with counter-rotating fan blades

Abstract

Term

Priority claims2

Members7

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Designated states33