Discharge lamp having mechanical disconnect guard against jacket

Details Discharge lamp having mechanical disconnect guard against jacket Discharge lamp having mechanical disconnect guard against jacket

1976-03-22

1980-09-09

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 85, H01J 744, H01J 1734, H01J 2316, H01K 162

Patent

active

042219930

ABSTRACT:
The inner arc tube of some jacketed discharge lamps transmits ultaviolet radiation which is normlly 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 a springy conductor fastened to a conductive support and compressed between the outer envelope and an arc tube inlead. Upon fracture of the outer envelope, the conductor straightens out whereupon the circuit is opened and the arc tube is disabled.

REFERENCES:
patent: 4013920 (1977-03-01), Petro
patent: 4039893 (1977-08-01), Corbley
patent: 4090105 (1978-05-01), Koo
patent: 4143301 (1979-03-01), Strauss et al.
patent: 4156830 (1979-05-01), Strauss et al.

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