EP1528224A3

Method and apparatus for cooling gas turbine engine rotor blade

Abstract

A rotor blade (40) for a gas turbine engine, includes a platform (62) including a radially outer surface (152) and a radially inner surface (144). An airfoil (60) extends radially outward from the platform. A shank (64) extends radially inward from the platform. A dovetail (66) extends from the shank such that an internal cavity is defined at least partially by the airfoil, the platform, the shank, and the dovetail. A cooling circuit extends through a portion of the shank for supplying cooling air from the cavity for impingement cooling of the platform radially inner surface.

EP1528224A3, drawing sheet 1 — Sheet 1 of 2

Term

Term ended

Projected expiry passed 27 October 2024, 1.9 years ago.

2 sheets

Sheet 1
Sheet 2

Every citation, both ways

Citations
Document	Relation	Office	Category	Cited during	Relevant claims
EP0801208A2	Cites	European Patent Office (EPO)	Y	Search report	8
EP1178181A2	Cites	European Patent Office (EPO)	XYI	Search report	1,3
EP1205636A2	Cites	European Patent Office (EPO)	X	Search report	1,3
US2912223A	Cites	United States of America	Y	Search report	9,10
US2915279A	Cites	United States of America	A	Search report	4,5
JPS6463605A	Cites	Japan	Y	Search report	2,4-6

14 members in 4 offices; this record represents the family

This recordMember, by publication datePriority claim

Priority claims2

Priority claims
Document	Office	Kind	Date
699060	United States of America	–	2003-10-31
69906003	United States of America	A	2003-10-31

Members14

Family members, oldest first
Document	Office	Kind
CN1611748A	China	A	2005-05-04
EP1528224A2	European Patent Office (EPO)	A2	2005-05-04
US2005095128A1	United States of America	A1	2005-05-05
US2005095129A1	United States of America	A1	2005-05-05
JP2005133726A	Japan	A	2005-05-26
EP1589193A2	European Patent Office (EPO)	A2	2005-10-26
CN1690365A	China	A	2005-11-02
JP2005307981A	Japan	A	2005-11-04
US7147440B2	United States of America	B2	2006-12-12
US7600972B2	United States of America	B2	2009-10-13
CN1611748B	China	B	2010-09-08
JP4762524B2	Japan	B2	2011-08-31
EP1528224A3This record	European Patent Office (EPO)	A3	2012-06-13
EP1528224B1	European Patent Office (EPO)	B1	2016-07-13

43 legal events, as 5 offices reported them to INPADOC

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Events

Legal events, newest first
	Event	Code	Office
2025-01-31	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2025-01-17	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2024-11-20	Patent expired after termination of 20 yearsExpiredPE20	PE20	GB
2024-10-27	Expiry of rightR071	R071	DE
2024-03-20	Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)REGISTERED BETWEEN 20240222 AND 20240228732E	732E	GB
2024-01-31	Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP	PGFP	EP
2023-11-23	Change of applicant/patenteeR081	R081	DE
2023-10-31	Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP	PGFP	EP
2023-10-31	Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP	PGFP	EP
2023-06-28	Opt-out of the competence of the unified patent court (upc) registeredP01	P01	EP
2022-09-30	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2021-08-31	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2021-08-31	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2021-05-31	Patent ceasedCeasedPL	PL	CH
2020-10-30	Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP	PGFP	EP
2020-01-31	Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP	PGFP	EP
2018-09-20	Fee paymentPLFP	PLFP	FR
2017-10-25	Fee paymentPLFP	PLFP	FR
2017-06-21	No opposition filedOpposition26N	26N	EP
2017-05-19	No opposition filed within time limitOppositionORIGINAL CODE: 0009261PLBE	PLBE	EP
2017-05-19	Information on the status of an ep patent application or granted ep patentGrantedSTATUS: NO OPPOSITION FILED WITHIN TIME LIMITSTAA	STAA	EP
2017-04-18	No opposition filed against granted patent, or epo opposition proceedings concluded without decisionGrantedR097	R097	DE
2016-10-25	Fee paymentPLFP	PLFP	FR
2016-08-18	Dpma publication of mentioned ep patent grantGrantedR096	R096	DE
2016-07-15	European patent takes effect as a national patent in ch/liEP	EP	CH
2016-07-13	Designated contracting statesAK	AK	EP
2016-07-13	European patent grantedGrantedFG4D	FG4D	GB
2016-07-13	Intention to grant announcedINTG	INTG	EP
2016-06-10	(expected) grantORIGINAL CODE: 0009210GRAA	GRAA	EP
2016-06-08	Information related to intention to grant a patent recordedORIGINAL CODE: EPIDOSNIGR71GRAR	GRAR	EP
2016-04-08	Grant fee paidORIGINAL CODE: EPIDOSNIGR3GRAS	GRAS	EP
2016-01-27	Intention to grant announcedINTG	INTG	EP
2016-01-07	Despatch of communication of intention to grant a patentORIGINAL CODE: EPIDOSNIGR1GRAP	GRAP	EP
2013-02-20	First examination report despatched17Q	17Q	EP
2013-02-20	Designation fees paidAKX	AKX	EP
2013-01-23	Request for examination filed17P	17P	EP
2012-06-13	Designated contracting statesAK	AK	EP
2012-06-13	Request for extension of the european patentAX	AX	EP
2012-06-13	Information provided on ipc code assigned before grantRIC1	RIC1	EP
2012-05-11	Search report despatchedORIGINAL CODE: 0009013PUAL	PUAL	EP
2005-05-04	Designated contracting statesAK	AK	EP
2005-05-04	Request for extension of the european patentAX	AX	EP
2005-03-18	Public reference made under article 153(3) epc to a published international application that has entered the european phaseORIGINAL CODE: 0009012PUAI	PUAI	EP

Method and apparatus for cooling gas turbine engine rotor blade

Abstract

Term

Priority claims2

Members14

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Titles3

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Designated states33