Title:
スパークプラグの製造方法
Document Type and Number:
Japanese Patent JP5046309
Kind Code:
B2
Abstract:
To provide a method of producing a spark plug in which a spark discharge gap with a suitable distance can easily be obtained without bending to deform a ground electrode in a direction in which the ground electrode moves towards or away from a metal tip of a center electrode, in the method of producing a spark plug, when a metal tip (a noble metal tip) 21 is welded to a front end portion 13a of a center electrode 13, the metal tip 21 is welded to the front end portion 13a of the center electrode 13 after a state is established in which the metal tip 21 alone is positioned in a radial direction where a predetermined spark discharge gap g is formed relative to a distal end portion 14b of a ground electrode 14 which is joined to a metal shell 11 at a proximal end portion 14a thereof.
More Like This:
| JP2001155840 | METHOD OF MANUFACTURING SPARK PLUG |
| JPS5859579 | IGNITION PLUG |
| JPH09129357 | SPARK PLUG FOR INTERNAL COMBUSTION ENGINE |
Inventors:
Sasamori
Akira Suzuki
Akira Suzuki
Application Number:
JP2009535721A
Publication Date:
October 10, 2012
Filing Date:
April 22, 2009
Export Citation:
Assignee:
Nippon Special Ceramics Co., Ltd.
International Classes:
H01T13/20; H01T21/02
Domestic Patent References:
| JP2002141154A | ||||
| JP200317216A | ||||
| JP2000208234A | ||||
| JP97734A | ||||
| JP200283662A | ||||
| JP8298178A |
Attorney, Agent or Firm:
Shohei Oguri
Hironori Honda
Toshimitsu Ichikawa
Hironori Honda
Toshimitsu Ichikawa