Electric lamp and discharge devices – Spark plugs – Plural parallel gaps
Reexamination Certificate
2011-05-31
2011-05-31
Williams, Joseph L (Department: 2889)
Electric lamp and discharge devices
Spark plugs
Plural parallel gaps
C313S141000
Reexamination Certificate
active
07952263
ABSTRACT:
A spark plug for use with an internal combustion vehicle engine preferably includes a housing having a single primary electrode and a single grounding electrode located subjacent to the single primary electrode. The single primary and grounding electrodes are spaced apart and thereby define a gap therebetween. A present invention further includes a mechanism for separately inducing a plurality of electric sparks between the single primary electrode and the single grounding electrode, respectively. Each of the electric sparks preferably has a separate and mutually exclusive firing point initiating from the single primary electrode and terminating at the single grounding electrode.
REFERENCES:
patent: 5856724 (1999-01-01), Chiu et al.
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