Electrical contact assembly with composite contact construction

Details Electrical contact assembly with composite contact construction Electrical contact assembly with composite contact construction

1986-10-27

1987-11-17

Briggs, William R.

Metal working

Method of mechanical manufacture

Electrical device making

H01R 4302

Patent

active

047063831

ABSTRACT:
A method of producing a nonwelding contact assembly for an electrical switch using a composite contact material formed by extruding a metal oxide core surrounded by a metal or metal alloy sheath with good welding properties to form a wire of core material having a layer of the metal or metal alloy metallurgically bonded thereto. A segment of the wire is resistance welded to a contact carrier and coined to the desired contact shape, after which the layer on the contact surface is sufficiently thin that it is oxidized to provide nonwelding characteristics after a few switch operations.

REFERENCES:
patent: 2425053 (1947-08-01), Swinehart
patent: 2468888 (1949-05-01), Mekelburg
patent: 3258830 (1966-07-01), Pityo
patent: 4342893 (1982-08-01), Wolf

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