Electrode for high intensity discharge lamps

Details Electrode for high intensity discharge lamps Electrode for high intensity discharge lamps

1983-12-05

1989-04-18

Rowan, Kurt

Electric lamp or space discharge component or device manufacturi

Process

Electrode making

445 46, 428547, H01J 912

Patent

active

048223123

ABSTRACT:
Electrodes for lamps comprising elongated structures comprised of layers containing varying amounts of metal and refractory oxide. In a preferred embodiment the electrode has a first end comprising 9.6 volume percent tungsten and the remainder alumina. The second end comprises substantially 100% tungsten. The intermediate body contains layers of, e.g., 12, 20, 35, 50 and 75% tungsten.

REFERENCES:
patent: 2464517 (1949-03-01), Kurtz
patent: 2914402 (1959-11-01), Becker et al.
patent: 3148981 (1964-09-01), Ryshkewitch
patent: 3303559 (1967-02-01), Holtzclaw
patent: 3325281 (1967-06-01), Ebhardt
patent: 4002940 (1977-01-01), Ekkelboom
patent: 4109031 (1978-08-01), Marscher
patent: 4155758 (1979-05-01), Evans
patent: 4412963 (1983-11-01), Hing

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