Electric lamp and discharge devices – Spark plugs – Shaped electrode chamber – insulator end – shell skirt – baffle...
Patent
1994-12-27
1997-03-11
Oberley, Alvin E.
Electric lamp and discharge devices
Spark plugs
Shaped electrode chamber, insulator end, shell skirt, baffle...
313120, H01T 1320
Patent
active
056104707
ABSTRACT:
A spark plug has a base with a bottom end portion adapted to be received and retained by a cylinder head of an internal combustion engine. An insulator retains a central electrode within the base with a combustion chamber end of the electrode extending into a combustion chamber of the engine when the plug is installed in the cylinder head. The central electrode combustion chamber end includes a combustion chamber end face with a hole having the physical characteristics of an acoustically tuned pipe with an open and a closed end formed in its surface. A ground electrode is attached to the base and defines a spark gap between its inner surface and the central electrode face. The ground electrode has a hole passing through it which has the physical characteristics of an acoustically tuned pipe with two open ends.
REFERENCES:
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patent: 2871388 (1959-01-01), Adair
patent: 2894162 (1959-07-01), Ignatjev
patent: 2944178 (1960-07-01), Schaub
patent: 4015160 (1977-03-01), Lara et al.
patent: 4023058 (1977-05-01), Lara et al.
patent: 4028576 (1977-06-01), Wofsey
patent: 4914343 (1990-04-01), Kagawa et al.
patent: 5280214 (1994-01-01), Johnson
Oberley Alvin E.
Oxenham J. Preston
Richardson Lawrence O.
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