Process for the manufacture of a platinum-tipped bimetallic cent

Details Process for the manufacture of a platinum-tipped bimetallic cent Process for the manufacture of a platinum-tipped bimetallic cent

1987-09-04

1989-02-07

Ramsey, Kenneth J.

Electric lamp and discharge devices

Spark plugs

Particular electrode structure or spacing

445 7, 228175, H01T 2102

Patent

active

048033952

ABSTRACT:
This process consists in introducing a copper slug (5) into a nickel cup (1), extruding the cup-and-slug assembly and shaping it to produce a bimetallic electrode. It is characterized in that before the introduction of the said copper slug into the cup, a platinum point (2) is fixed onto the nickel cup (1). The invention applies to electrodes for electrical ignition plugs for heat engines.

REFERENCES:
patent: 2955222 (1960-10-01), Beesch
patent: 3332140 (1987-07-01), Sugiura et al.
patent: 3548239 (1970-12-01), Eaton
patent: 4684352 (1987-08-01), Clark et al.
patent: 4699600 (1987-10-01), Kondo
patent: 4700103 (1987-10-01), Yamaguchi et al.
patent: 4705486 (1987-11-01), Myers et al.

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