Electric lamp or space discharge component or device manufacturi – Process – Spark plug or spark gap making
Patent
1984-06-14
1987-10-13
Ramsey, Kenneth J.
Electric lamp or space discharge component or device manufacturi
Process
Spark plug or spark gap making
228160, H01T 2102
Patent
active
046996001
ABSTRACT:
A spark plug for internal combustion engines provided with a noble metal tip on the pointed top of a spark plug center electrode. The noble metal tip is welded to the center electrode top end by heating and pressing the portion to be welded. After the welding, the center electrode is shaped to provide the pointed top. The noble metal tip is a platinum alloy consisting of platinum of 85 through 70 in weight percentage and iridium of 15 through 30 in weight percentage.
REFERENCES:
patent: 2344597 (1944-03-01), Chaston et al.
patent: 2955222 (1960-10-01), Beesch
patent: 3868530 (1975-02-01), Eaton et al.
patent: 4122366 (1978-10-01), von Stutterheim et al.
patent: 4324588 (1982-04-01), Zysk et al.
Nippondenso Co. Ltd.
Ramsey Kenneth J.
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