Metal working – Barrier layer or semiconductor device making – Barrier layer device making
Patent
1979-12-05
1982-02-09
McQuade, John
Metal working
Barrier layer or semiconductor device making
Barrier layer device making
313141, H01T 1320
Patent
active
043143920
ABSTRACT:
A method of making a center electrode for a spark plug comprising uniting together, by heating and without the use of brazing materials, slugs of copper and nickel alloy and then extruding the united slugs to form a central electrode having a copper core and a nickel alloy sheath.
REFERENCES:
patent: 2955222 (1960-10-01), Beesch
patent: 3803892 (1974-04-01), Yamaguchi et al.
patent: 3857145 (1974-12-01), Yamaguchi et al.
GKN Floform Limited
McQuade John
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