Method of forming a chamber in a workpiece

(19)

(11)

EP 1 072 788 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	03.07.2002 Bulletin 2002/27

(43)	Date of publication A2:
	31.01.2001 Bulletin 2001/05

(21)	Application number: 00306424.3

(22)	Date of filing: 27.07.2000

(51)	International Patent Classification (IPC)⁷: F02M 61/16

(84)	Designated Contracting States:
	AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
	Designated Extension States:
	AL LT LV MK RO SI

(30)

Priority:

30.07.1999 GB 9917997
15.12.1999 GB 9929605

(71)	Applicant: Delphi Technologies, Inc.
	Troy, MI 48007 (US)

(72)	Inventor:
	Giorgetti, John 41000 Villebarou (FR)

(74)	Representative: Pople, Joanne Selina
	Marks & Clerk, Alpha Tower, Suffolk Street, Queensway Birmingham B1 1TT Birmingham B1 1TT (GB)

(54)	Method of forming a chamber in a workpiece

(57) A method of forming a chamber (13) in a workpiece (10) comprises the steps of forming a blind bore (12) in the workpiece (10) and inserting an insert member (20) into the blind end of the bore (12) such that the insert member (20) and the bore (12) together define the chamber (13). The invention also relates to a workpiece formed using such a method.

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