Electric lamp or space discharge component or device manufacturi – Process – Spark plug or spark gap making
Patent
1988-06-06
1989-06-20
Ramsey, Kenneth J.
Electric lamp or space discharge component or device manufacturi
Process
Spark plug or spark gap making
313141, H01T 2102
Patent
active
048405949
ABSTRACT:
A method of manufacturing for a spark plug (82) having a center electrode (80) and a side wire electrode (62) with a sphere of platinum (34, 68) mechanically retained in a cylindrical hole (34, 66) by an annular rib (40, 70) formed by a staking operation. Thereafter a force is applied that flattens the sphere (34, 66) to produce a disc (48, 72) which substantially covers the annular rib (40, 70) from exposure to the corrosive effects of gases in a combustion chamber.
REFERENCES:
patent: 3868530 (1975-02-01), Eaton et al.
patent: 4393324 (1983-07-01), Nishio et al.
patent: 4488081 (1984-12-01), Kondo et al.
patent: 4684352 (1987-08-01), Clark et al.
Allied-Signal Inc.
Decker Ken C.
McCormick Jr. Leo H.
Ramsey Kenneth J.
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