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1. (WO1991006142) SPARK PLUG WITH A RING/OPEN-RING SHAPED GROUND ELECTRODE
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1991/006142 International Application No.: PCT/EP1990/001738
Publication Date: 02.05.1991 International Filing Date: 13.10.1990
IPC:
H01T 13/32 (2006.01) ,H01T 13/46 (2006.01)
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
T
SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
13
Sparking plugs
20
characterised by features of the electrodes or insulation
32
characterised by features of the earthed electrode
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
T
SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
13
Sparking plugs
46
having two or more spark gaps
Applicants:
ULTRA PERFORMANCE INTERNATIONAL [US/US]; 1798 Suffolk Drive Clearwater, FL 34616, US (AllExceptUS)
NITHARDT, Roland [CH/CH]; CH (AllExceptUS)
JOHNSON, James, E. [US/US]; US (UsOnly)
Inventors:
JOHNSON, James, E.; US
Common
Representative:
NITHARDT, Roland; Cabinet Roland Nithardt 15, rue Edouard-Verdan CH-1400 Yverdon-les-Bains, CH
Priority Data:
421,17213.10.1989US
Title (EN) SPARK PLUG WITH A RING/OPEN-RING SHAPED GROUND ELECTRODE
(FR) BOUGIE D'ALLUMAGE DOTEE D'UNE ELECTRODE DE MISE A LA TERRE EN FORME D'ANNEAU OU D'ANNEAU OUVERT
Abstract:
(EN) Spark plug for an internal combustion engine having a metal shell (20) enclosing a ceramic insulator (16) containing a conductive centre electrode (18) having a bottom end (58) exiting from the insulator. The bottom end of the centre electrode is spaced apart from a ground electrode (12) attached to the metal shell by at least one support member or mounting post (38). The ground electrode is ring/open-ring shaped and its interior diameter ranges from equal to the exterior diameter of the centre electrode to a multiple of the size of the interior diameter of the centre electrode.
(FR) Bougie d'allumage pour un moteur à combustion interne dotée d'une caisse métallique (20) renfermant un isolant céramique (16) qui comporte une électrode centrale conductrice (18). Ladite électrode comprend une extrémité de fond (58) débordant ledit isolant, et espacée d'une électrode de mise à la terre (12) et fixée à la caisse métallique par au moins un organe de support ou colonne de montage (38). L'électrode de mise à la terre se présente en forme d'anneau ou d'anneau ouvert, son diamètre intérieur s'étendant entre une grandeur égale au diamètre extérieur de l'électrode centrale et un multiple de la grandeur du diamètre intérieur de ladite électrode centrale.
Designated States: CA, JP, US
European Patent Office (AT, BE, CH, DE, DK, ES, FR, GB, GR, IT, LU, NL, SE)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
EP0451264CA2044622