Discharge lamp having disconnect effective upon jacket failure

Details Discharge lamp having disconnect effective upon jacket failure Discharge lamp having disconnect effective upon jacket failure

1976-03-22

1977-08-02

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 85, 315107, 315119, 315127, H01J 714, H01J 1346, H01J 1734, H01K 162

Patent

active

040398935

ABSTRACT:
The inner arc tube of some jacketed discharge lamps transmits ultraviolet radiation which is normally intercepted by the glass outer envelope. To prevent harmful release of such radiation in the event the outer envelope should be shattered, a mechanical disconnect is provided in the interenvelope space comprising separable conductors which are part of the arc tube supporting frame and which are maintained in engagement by the outer envelope. Upon fracture of the outer envelope, spring pressure forces the conductors apart whereupon the circuit is opened and the arc tube is disabled.

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