Global Patent Index - EP 0859436 B1

EP 0859436 B1 2000-07-19 - Spark plug for an internal combustion engine

Title (en)

Spark plug for an internal combustion engine

Title (de)

Zündkerze für eine Brennkraftmaschine

Title (fr)

Bougie d'allumage pour moteur à combustion interne

Publication

EP 0859436 B1 (DE)

Application

EP 98102016 A

Priority

DE 19705372 A

Abstract (en)

[origin: EP0859436A1] The spark plug has an electrically conducting body. A central electrode (3) protrudes from the body, and is insulated from it. An earth electrode (4) is electrically connected to the body, and is formed as a ring which forms an annular spark gap about the protruding part of the central electrode. The central electrode has a noble metal reinforcement on the surface bounding the spark gap, as has the earth electrode. The reinforcement of the earth electrode is a bush and on the central electrode is a sleeve. The ring electrode consists of nickel or a nickel alloy.

IPC 1-7 (main, further and additional classification)

H01T 13/46; H01T 13/39

IPC 8 full level (invention and additional information)

H01T 13/39 (2006.01); H01T 13/46 (2006.01)

CPC (invention and additional information)

H01T 13/39 (2013.01); H01T 13/467 (2013.01)

Designated contracting state (EPC)

AT DE ES FR GB IT SE

EPO simple patent family

EP 0859436 A1 19980819; EP 0859436 B1 20000719; AT 194886 T 20000815; DE 19705372 A1 19980820; DE 19705372 C2 20020627; ES 2149621 T3 20001101; US 6064144 A 20000516

INPADOC legal status


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2002-01-01 [REG GB IF02] EUROPEAN PATENT IN FORCE AS OF 2002-01-01

2001-07-04 [26N] NO OPPOSITION FILED

2000-11-01 [REG ES FG2A] DEFINITIVE PROTECTION

- Document: ES 2149621 T3

2000-08-25 [ET] FR: TRANSLATION FILED

2000-08-24 [REF] CORRESPONDS TO:

- Document: DE 59800197 20000824

2000-08-23 [GBT] GB: TRANSLATION OF EP PATENT FILED (GB SECTION 77(6)(A)/1977)

- Effective date: 20000728

2000-08-04 [ITF] IT: TRANSLATION FOR A EP PATENT FILED

- Owner name: STUDIO TORTA S.R.L.

2000-07-19 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: B1

- Designated State(s): AT DE ES FR GB IT SE

2000-07-19 [REF] CORRESPONDS TO:

- Document: AT 194886 T 20000815

1999-11-03 [RTI1] TITLE (CORRECTION)

- Free text: SPARK PLUG FOR AN INTERNAL COMBUSTION ENGINE

1999-05-06 [AKX] PAYMENT OF DESIGNATION FEES

- Free text: AT DE ES FR GB IT SE

1999-05-06 [RBV] DESIGNATED CONTRACTING STATES (CORRECTION):

- Designated State(s): AT DE ES FR GB IT SE

1999-03-03 [17Q] FIRST EXAMINATION REPORT

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1999-02-03 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 19981201

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