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US 4,742,265 AGranted
Spark plug center electrode of alloy material including aluminum and chromium
AssigneeFord Motor Company
InventorsJoseph M. Giachino, David W. Hoffman, William F. Horn, Gerald P. Kazmer
Life of this patent
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Abstract
A spark plug for providing an ignition spark has a center electrode. At least a portion of the center electrode contains an alloy material from an alloy family of M-CrAlY wherein M is nickel, cobalt, iron or a combination of these elements and Cr is chromium, Al is aluminum, Y is an element from the group yttrium, zirconium, hafnium or titanium.
Claims11
A spark plug for use in providing an ignition spark including:
- a center electrode for providing a conductive path and a grounding electrode, spaced from said center electrode, for providing a conductive path so that a spark can be sustained between said center and grounding electrodes, at least a portion of said center electrode comprising an alloy material from an alloy family of M-CrAlY wherein M is selected from the group consisting of nickel, cobalt, iron and mixtures thereof and Cr is chromium;
- Al is aluminum;
- Y is an element selected from the group consisting of yttrium, zirconium, hafnium and titanium.
Dependencies are inferred from the claim text.