Title:
SPARK PLUG AND METHOD FOR MANUFACTURING THE SAME
Document Type and Number:
Japanese Patent JP2002280145
Kind Code:
A
Abstract:
To provide a spark plug preventing exfoliation and dropout of Ir alloy chip fixed on an electrode.
In a spark plug 100 provided with Ir alloy chip 5 on a position where a ground electrode 4 and a centre electrode 3 face, an insertion through hole is provided on the ground electrode 4 and the chip 5 is fitted in the hole and is arc-welded from a ground electrode back surface 21. Moreover, the chip 5 is fixed by performing laser welding from surfaces except the ground electrode front surface 22.
Inventors:
TERAMURA HIDEKI
MUSASA MAMORU
KONDO KIYOHIRO
MUSASA MAMORU
KONDO KIYOHIRO
Application Number:
JP2001078314A
Publication Date:
September 27, 2002
Filing Date:
March 19, 2001
Export Citation:
Assignee:
NGK SPARK PLUG CO
International Classes:
H01T13/20; H01T13/32; H01T13/39; H01T21/02; (IPC1-7): H01T13/20; H01T13/32
Attorney, Agent or Firm:
Masanori Sugawara
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