Radial gap high thread spark plug

Details Radial gap high thread spark plug Radial gap high thread spark plug

1997-10-15

2000-08-15

Patel, Nimeshkumar D.

Electric lamp and discharge devices

Spark plugs

Particular electrode structure or spacing

313135, 313143, 313144, 313145, 123169EL, 123169MG, H01T 1320, H01T 1322, H01T 1334, H01T 1336

Patent

active

061041300

ABSTRACT:
A spark plug having a center electrode with a cylindrical body with a tip at one end and a terminal near the other end with an insulator radially surrounding the center electrode. A ground shield surrounds the insulator and includes a ground electrode near one end, having a portion thereof with an annular opening disposed above and radially separated from the center electrode tip to form a radial spark gap, with a sealing portion disposed between the ground electrode and the other end of the ground shield for sealing the engine combustion chamber from the outside environment when the spark plug is installed. The ground shield can be formed from two parts which are deformed during manufacturing to be in mechanical engagement and securely holding the insulator in place. The spark plug can also have also have an integral or separate retainer for securing the spark plug to the engine.

REFERENCES:
patent: 2334204 (1943-11-01), King
patent: 2453048 (1948-11-01), Tognola et al.
patent: 3911307 (1975-10-01), Goto et al.
patent: 4028576 (1977-06-01), Wofsey
patent: 5697334 (1997-12-01), Below

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