Open-chamber multi-spark plug

Details Open-chamber multi-spark plug Open-chamber multi-spark plug

2011-04-19

2011-04-19

Ton, Toan (Department: 2889)

Electric lamp and discharge devices

Spark plugs

Shaped electrode chamber, insulator end, shell skirt, baffle...

C313S142000, C313S118000

Reexamination Certificate

active

07928642

ABSTRACT:
An internal combustion engine radio frequency spark plug including two plasma-generating electrodes, separated by an insulator, that constitute respectively an outer shell enclosing the insulator and a central electrode housed in a central bore of the insulator. The spark plug includes a deep opening over the entire circumference of the shell, forming a heat-exchanger chamber inside the spark plug shell, opening outwards.

REFERENCES:
patent: 2493743 (1950-01-01), Benson
patent: 2902747 (1959-09-01), Reiter
patent: 3440870 (1969-04-01), Leto
patent: 5731654 (1998-03-01), Benedikt et al.
patent: 2 859 830 (2005-03-01), None
patent: 2 859 831 (2005-03-01), None
patent: 2 859 869 (2005-03-01), None
patent: 01 20162 (2001-03-01), None
U.S. Appl. No. 12/090,722, filed Apr. 18, 2008, Agneray, et al.

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