Time fuse for high pressure sodium lamps

Electric lamp and discharge devices: systems – Combined load device or load device temperature modifying... – Electric switch inside evacuated or gas filled envelope

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313 25, 315 56, 315 74, 337159, 337166, H01J 744, H01J 1734, H01J 1978, H01J 2996

Patent

active

045995435

ABSTRACT:
A high pressure sodium vapor lamp having a time fuse device effective for predeterminedly establishing the anticipated life of the high pressure lamp is disclosed. Also disclosed are various embodiments of the time fuse device.

REFERENCES:
patent: 3386063 (1968-05-01), Mansfield, Jr.
patent: 3885184 (1975-05-01), Schat et al.
patent: 4297666 (1981-10-01), Asdollahi
patent: 4382205 (1983-05-01), Strok, Jr.
patent: 4415836 (1983-11-01), De Cuester et al.
patent: 4500811 (1985-02-01), McMillan

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