Process for joining electrodes and product resulting therefrom

Details Process for joining electrodes and product resulting therefrom Process for joining electrodes and product resulting therefrom

1975-07-07

1977-01-11

Envall, Jr., R. N.

Electric lamp and discharge devices: consumable electrodes

Consumption feed type

Electrodes

13 18, 219145, H05B 714

Patent

active

040029425

ABSTRACT:
A process to form a positive electrode of an arc by joining two principal carbon-base electrodes and the product resulting therefrom. The two principal electrodes are axially perforated at one of their ends to tightly receive a small secondary electrode which fills the perforations. The small secondary electrode is a mixture of carbon and graphite covered with a copper layer. The material of the three electrodes is compatible so as to operate at an optimum temperature, amperage and color which are essentially the same for use in a cinematographic projector.

REFERENCES:
patent: 2039167 (1936-04-01), Hopkins
patent: 2837447 (1958-06-01), Weindel
patent: 3251926 (1966-05-01), Click et al.
patent: 3297903 (1967-01-01), Riek
patent: 3313976 (1967-04-01), Lauzau et al.
patent: 3359449 (1967-12-01), Trask

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