Safety switch which renders HID lamp inoperative on _accidental

Details Safety switch which renders HID lamp inoperative on _accidental Safety switch which renders HID lamp inoperative on _accidental

1976-12-07

1980-10-21

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 47, 315 74, 313 17, H01J 744, H01J 1346, H01J 1978, H01J 2316

Patent

active

042296781

ABSTRACT:
An HID lamp has a very positive acting and simple resilient safety switch positioned proximate the inner surface of the bulb portion of the protective outer envelope and in contact therewith which maintains the switch in a closed position. When the envelope is shattered, the closed switch will open to break the electrical path to the arc tube, thereby rendering the lamp inoperative.

REFERENCES:
patent: 4013919 (1977-03-01), Corbley
patent: 4013920 (1977-03-01), Petro
patent: 4032816 (1977-06-01), Rokosz
patent: 4143301 (1979-03-01), Strauss et al.
patent: 4156830 (1959-05-01), Strauss et al.

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