H - Electricity – 01 – T
Patent
H - Electricity
01
T
H01T 13/46 (2006.01)
Patent
CA 2121694
A double ignition spark plug has a cavity which is evacuated of substantially all gases. The insulation portion of the spark plug is formed in two steps at a temperature of 800 to 1000°C where the first sintering step is when the cavity is open and a first conductor is in place, and a second sintering step is effective to close the cavity and fix a second conductor in place. At least the second sintering step is conducted in a vacuum. The completed double ignition spark plug has substantially all gases removed from the spark gap within the insulator.
Ikeya Kaname
Perley-Robertson Hill & Mcdougall Llp
LandOfFree
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