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US 6,320,317 B1Granted
Glass seal resistor composition and resistor spark plugs
AssigneeDelphi Technologies, Inc.
InventorsJoseph Michael Keller, Richard Frederick Beckmeyer, William J. LaBarge
Life of this patent
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Abstract
A resistor seal composition useful in resistor spark plugs, comprises glass, at least one metal oxide, at least one filler material, and a branched or straight chained zirconium carboxylate. The glass comprises a strontium borate glass and/or a borosilicate glass. Metal oxides include aluminum oxide, zinc oxide, and zirconium oxide. Filler materials include silicon dioxide and mullite.
Claims12
A resistor seal composition comprising:
- a) glass;
- b) at least one metal oxide;
- c) at least one filler material;
- and
- d) a branched or straight chained zirconium carboxylate.
2 more elements
A resistor spark plug comprising:
- a) an outer shell;
- comprising an insulator disposed therein;
- b) an insulator concentrically disposed within said outer shell, said insulator comprising a centerbore having a lower portion and an upper portion;
- c) an electrode disposed in said lower portion of said centerbore;
- d) a terminal screw disposed in said upper portion of said centerbore;
- e) a resistor seal disposed in said centerbore between and in electric communication with said electrode and said terminal screw, said resistor seal comprising glass, at least one metal oxide, at least one filler material, and a branched or straight chained zirconium carboxylate.
3 more elements
Dependencies are inferred from the claim text.