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US 7,408,293 B2Granted
Spark plug including ground elcetrode carrier casing
AssigneeGE Jenbacher GmbH & Co OHG
InventorsChristian Francesconi, Christoph Egger
Life of this patent
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Abstract
A spark plug, in particular for use in internal combustion engines, includes a spark plug casing and a ground electrode carrier casing. The ground electrode carrier casing has at least two ground electrode carrier casing portions having mutually different materials and/or the ground electrode carrier casing is of a different material from the spark plug casing.
Claims25
A spark plug comprising:
- a spark plug casing;
- and
- a ground electrode carrier casing including a first ground electrode carrier casing portion and a second ground electrode carrier casing portion, each of said first ground electrode carrier casing portion and said second ground electrode carrier casing portion having a screwthread, said first ground electrode carrier casing portion being made from a material different than said second ground electrode carrier casing portion.
A spark plug comprising:
- an insulator body;
- a spark plug casing enclosing said insulator body an outer surface of said spark plug casing forming a portion of an outer surface of said spark plug;
- and
- a ground electrode carrier casing having a screwthread on an outer surface thereof, said ground electrode carrier casing being made of a different material than said spark plug casing.
1 more element
A spark plug comprising:
- an insulator body;
- a spark plug casing enclosing said insulator body;
- and
- a ground electrode carrier casing having a screwthread extending over substantially an entirety of an outer circumferential surface of said ground electrode carrier casing, said ground electrode carrier casing being made of a different material than said spark plug casing and being arranged so as to directly contact said spark plug casing.
1 more element
Dependencies are inferred from the claim text.