Injection molded automotive spark plug

Details Injection molded automotive spark plug Injection molded automotive spark plug

1986-12-11

1989-01-03

Moore, David K.

Electric lamp and discharge devices

Spark plugs

Shaped electrode chamber, insulator end, shell skirt, baffle...

313137, 313141, 123169E, H01T 1320, H01T 1338

Patent

active

047959380

ABSTRACT:
Automotive spark plug having an injection molded body which includes the central electrode and connnecting cap and the grounded electrode. In one embodiment, the grounded electrode is secured to a threaded metal cap which is mounted on a band integral with the molded body, and which has support legs extending into the molded body. In a second embodiment, the molded body is appropriately threaded and the grounded electrode extends into the interior radius of the threads so as to provide a proper ground.

REFERENCES:
patent: 1941279 (1933-12-01), Sharpnack
patent: 2222433 (1940-11-01), Hastings, Jr.
patent: 2478259 (1949-08-01), Feichter
patent: 2498822 (1950-02-01), Palmer

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