(19)
(11) EP 0 635 918 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
09.08.1995 Bulletin 1995/32

(43) Date of publication A2:
25.01.1995 Bulletin 1995/04

(21) Application number: 94117046.6

(22) Date of filing: 10.07.1990
(51) International Patent Classification (IPC)6H01T 1/22, H01T 13/46
(84) Designated Contracting States:
DE GB

(30) Priority: 12.07.1989 JP 178074/89
17.10.1989 JP 268054/89

(62) Application number of the earlier application in accordance with Art. 76 EPC:
90113166.4 / 0407976

(71) Applicant: YAZAKI CORPORATION
Minato-ku Tokyo 108 (JP)

(72) Inventors:
  • Sato, Takeshi
    Susono-shi, Shizuoka 410-11 (JP)
  • Mitani, Tetsuya
    Susono-shi, Shizuoka 410-11 (JP)
  • Hanzawa, Mikio
    Susono-shi, Shizuoka 410-11 (JP)

(74) Representative: Grünecker, Kinkeldey, Stockmair & Schwanhäusser Anwaltssozietät 
Maximilianstrasse 58
80538 München
80538 München (DE)


(56) References cited: : 
   
     
    Remarks:
    This application was filed on 27 - 10 - 1994 as a divisional application to the application mentioned under INID code 60.
     


    (54) Discharge device and ignition system with series gap using discharge device


    (57) A discharge device of the present invention including a pair of electrodes opposingly disposed in a sealed tube is characterized by the provision of a conductive member surrounding one of the electrodes in the sealed tube. An ignition system with a series gap has a built-in discharge device provided with a series gap, with one end connected to the center electrode side of the spark plug and with the other end connected to the high-tension cable side extending from the high-voltage distribution side. In this ignition system, a discharge device has a conductive member which surrounds one of the electrodes of the sealed tube, and one of the electrodes enclosed with the conductive member of this discharge device works as a cathode. Furthermore, in this ignition system with a series gap which includes a discharge tube provided with the series gap with one end connected to the center electrode side of the spark plug and the other end connected to the high-tension cable extending from the high-voltage distribution side, there is provided a conductive member enclosing the cathode side of the discharge device to be installed in the casing.





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