High intensity discharge lamp with integral means for arc exting

Details High intensity discharge lamp with integral means for arc exting High intensity discharge lamp with integral means for arc exting

1978-11-13

1980-06-17

Chatmon, Jr., Saxfield

Electric lamp and discharge devices: systems

Combined load device or load device temperature modifying...

Electric switch inside evacuated or gas filled envelope

315 74, 315 75, 315119, 313184, H01J 744, H01J 1346, H01J 1978, H01K 162

Patent

active

042086140

ABSTRACT:
A high intensity discharge lamp having an inner tube in which a discharge takes place to produce visible light and ultraviolet radiation and an outer envelope which blocks harmful ultraviolet radiation. An oxidizable element of a refractory metal is provided in the voltage supply to the arc tube internally of the outer envelope which element oxidizes when the outer envelope is broken and burns through to remove the voltage from the arc tube and to extinguish the arc.

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