Method for chemical milling a gas turbine engine component with a flow passage

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EP 2 574 725 B8

(12)	CORRECTED EUROPEAN PATENT SPECIFICATION
	Note: Bibliography reflects the latest situation

(15)	Correction information:
	Corrected version no 1 (W1 B1)

(48)	Corrigendum issued on:
	21.04.2021 Bulletin 2021/16

(45)	Mention of the grant of the patent:
	17.03.2021 Bulletin 2021/11

(21)	Application number: 12177904.5

(22)	Date of filing: 25.07.2012

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International Patent Classification (IPC):

F01D 5/14^(2006.01)
B23C 3/18^(2006.01)
C23F 1/04^(2006.01)

F01D 9/04^(2006.01)
B23P 15/00^(2006.01)

(54)	Method for chemical milling a gas turbine engine component with a flow passage Verfahren zum chemischen Fräsen eines Garturbinenbauteils mit einer Durchflusspassage Procédé de fraisage chimique d'un composant de turbine à gaz pourvu d'un passage d'écoulement

(84)	Designated Contracting States:
	AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

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Priority:

30.09.2011 US 201113250230

(43)	Date of publication of application:
	03.04.2013 Bulletin 2013/14

(73)	Proprietor: Raytheon Technologies Corporation
	Farmington, CT 06032 (US)

(72)	Inventors:
	WILEY, David R. Jupiter, FL Florida 33458-8324 (US) KAKUSKA, Reed A. Juno, FL Florida 33408 (US)

(74)	Representative: Dehns
	St. Bride's House 10 Salisbury Square London EC4Y 8JD London EC4Y 8JD (GB)

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References cited: :

EP-A1- 1 647 673
DE-A1- 4 425 344
US-A1- 2005 058 542

EP-A1- 2 177 298
US-A- 5 248 386

Note: Within nine months from the publication of the mention of the grant of the European patent, any person may give notice to the European Patent Office of opposition to the European patent granted. Notice of opposition shall be filed in a written reasoned statement. It shall not be deemed to have been filed until the opposition fee has been paid. (Art. 99(1) European Patent Convention).