Spark plug
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jul 17, 1984
Grant Date -
N/A
app pub date -
Jul 27, 1981
filing date -
Jul 27, 1981
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A spark plug having an internal resistor and resistor-bore seal is disclosed. The spark plug comprises a shell, an insulator assembly carried by the shell and a ground electrode structurally integral with the shell. The insulator assembly comprises an insulator having a firing end and a terminal end, and a bore extending therethrough, and a center electrode within the bore of the insulator, and having a firing end firing in spark gap relationship with the ground electrode. The assembly also comprises a resistor positioned within the bore of the insulator and in electrical contact with the center electrode. The longitudinal position of the resistor in the bore of the insulator is radially inward of the shell. The assembly also includes an electrically nonconductive and substantially gas-impervious seal compacted between the walls of the bore of the insulator and longitudinally extending walls of the resistor. The electrically non-conductive material can be covered by an electrically conductive cup. A method for producing the foregoing spark plug is also disclosed.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully