EP2492454A3

Endwall component for a turbine stage of a gas turbine engine

Abstract

A component of a turbine stage of a gas turbine engine is provided, the component forming an endwall for the working gas annulus of the stage. The component has one or more internal plena behind the endwall which, in use, contain a flow of cooling air. The component further has a plurality of exhaust holes in the endwall. The holes connect the plena to a gas-washed surface of the endwall such that the cooling air effuses through the holes to form a cooling film over the gas-washed surface. Each exhaust hole has a flow cross-sectional area which is greater at an intermediate position between the entrance of the hole from the respective plenum and the exit of the hole to the gas-washed surface than it is at said exit.

EP2492454A3, drawing sheet 1 — Sheet 1 of 1

Term

5.4 yearsto projected expiry

Projected expiry 8 February 2032, counted from filing; an application has no term until it is granted.

1 sheet

Sheet 1

Every citation, both ways

Citations
Document	Relation	Office	Cited during
US2010129196A1	Cites	United States of America	Search report
US5993150A	Cites	United States of America	Search report
WO9417285A1	Cites	World Intellectual Property Organization (WIPO)	Search report

4 priority claims, no other members on record

This recordMember, by publication datePriority claim

Priority claims4

Priority claims
Document	Office	Kind	Date
201103176	United Kingdom	A	2011-02-24
201103176	United Kingdom	–	2011-02-24
201103176	–	–	–
GB20110003176	–	–	–

83 legal events, as 9 offices reported them to INPADOC

Over the term

Point at a mark for the event

Events

Legal events, newest first
	Event	Code	Office
2024-01-31	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2024-01-31	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2024-01-31	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2024-01-18	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2023-10-25	Gb: european patent ceased through non-payment of renewal feeCeasedGBPC	GBPC	EP
2023-09-01	Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal feeWithdrawnR119	R119	DE
2023-07-12	Opt-out of the competence of the unified patent court (upc) registeredP01	P01	EP
2022-06-30	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2022-06-01	Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP	PGFP	EP
2022-04-29	Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP	PGFP	EP
2022-04-29	Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP	PGFP	EP
2021-07-30	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2021-05-31	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2020-06-30	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2020-03-31	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2020-02-28	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2020-01-31	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2019-12-31	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2019-12-31	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2019-11-27	Patent lapsedLapsedMM4A	MM4A	IE
2019-11-20	Lapsed because of non-payment of the annual feeLapsedMM	MM	BE
2019-10-31	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2019-10-31	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2019-09-30	Patent ceasedCeasedPL	PL	CH
2019-08-30	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2019-08-21	No opposition filedOpposition26N	26N	EP
2019-07-31	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2019-07-19	No opposition filed within time limitOppositionORIGINAL CODE: 0009261PLBE	PLBE	EP
2019-07-19	Information on the status of an ep patent application or granted ep patentGrantedSTATUS: NO OPPOSITION FILED WITHIN TIME LIMITSTAA	STAA	EP
2019-06-13	No opposition filed against granted patent, or epo opposition proceedings concluded without decisionGrantedR097	R097	DE
2019-05-31	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2019-05-31	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2019-05-31	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2019-04-30	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2019-04-30	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2019-04-30	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2019-04-30	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2019-04-30	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2019-04-30	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2019-04-30	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2019-04-30	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2019-04-30	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2019-03-15	Deletion acc. to par. 5 (withdrawal of the translation of the ep patent)MK05	MK05	AT
2019-02-28	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2019-02-28	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2019-02-28	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2019-01-31	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2019-01-31	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2019-01-31	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2019-01-31	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2019-01-31	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2019-01-31	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2019-01-31	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2019-01-25	Invalidated european patentMG4D	MG4D	LT
2019-01-16	Patent invalid in the netherlands as no translation has been filedMP	MP	NL
2018-10-15	Reference to at number (ep patent validated in austria)REF	REF	AT
2018-10-11	Dpma publication of mentioned ep patent grantGrantedR096	R096	DE
2018-10-03	European patents granted designating irelandGrantedFG4D	FG4D	IE
2018-09-14	European patent takes effect as a national patent in ch/liEP	EP	CH
2018-09-12	Designated contracting statesAK	AK	EP
2018-09-12	European patent grantedGrantedFG4D	FG4D	GB
2018-08-15	Intention to grant announcedINTG	INTG	EP
2018-08-10	(expected) grantORIGINAL CODE: 0009210GRAA	GRAA	EP
2018-08-10	Information on the status of an ep patent application or granted ep patentGrantedSTATUS: THE PATENT HAS BEEN GRANTEDSTAA	STAA	EP
2018-08-08	Grant fee paidORIGINAL CODE: EPIDOSNIGR3GRAS	GRAS	EP
2018-07-16	Despatch of communication of intention to grant a patentORIGINAL CODE: EPIDOSNIGR1GRAP	GRAP	EP
2018-07-16	Information on the status of an ep patent application or granted ep patentGrantedSTATUS: GRANT OF PATENT IS INTENDEDSTAA	STAA	EP
2018-07-11	Information provided on ipc code assigned before grantRIC1	RIC1	EP
2018-07-11	Information provided on ipc code assigned before grantRIC1	RIC1	EP
2018-07-11	Information provided on ipc code assigned before grantRIC1	RIC1	EP
2018-06-13	Request for examination filed17P	17P	EP
2018-06-13	Designated contracting states (corrected)RBV	RBV	EP
2018-05-11	Information on the status of an ep patent application or granted ep patentGrantedSTATUS: REQUEST FOR EXAMINATION WAS MADESTAA	STAA	EP
2017-11-01	Designated contracting statesAK	AK	EP
2017-11-01	Request for extension of the european patentAX	AX	EP
2017-11-01	Information provided on ipc code assigned before grantRIC1	RIC1	EP
2017-11-01	Information provided on ipc code assigned before grantRIC1	RIC1	EP
2017-11-01	Information provided on ipc code assigned before grantRIC1	RIC1	EP
2017-09-29	Search report despatchedORIGINAL CODE: 0009013PUAL	PUAL	EP
2015-07-29	Party data changed (applicant data changed or rights of an application transferred)RAP1	RAP1	EP
2012-08-29	Designated contracting statesAK	AK	EP
2012-08-29	Request for extension of the european patentAX	AX	EP
2012-08-28	Public reference made under article 153(3) epc to a published international application that has entered the european phaseORIGINAL CODE: 0009012PUAI	PUAI	EP

Endwall component for a turbine stage of a gas turbine engine

Abstract

Term

Priority claims4

Over the term

Events

Numbers

Titles3

Classification

Designated states40