Electric lamp and discharge devices: systems – Combined load device or load device temperature modifying... – Filament or electric heater in series with a discharge...
Patent
1980-03-14
1982-08-17
Chatmon, Jr., Saxfield
Electric lamp and discharge devices: systems
Combined load device or load device temperature modifying...
Filament or electric heater in series with a discharge...
315 46, 315 75, 315100, 315100, 315104, H01J 744, H01J 1734, H01J 1778, H01J 2996
Patent
active
043451861
ABSTRACT:
A metal vapor discharge lamp comprises main electrodes and an auxiliary electrode in an arc tube to initiate the discharge between the main electrode and the auxiliary electrode at the initiation of the operation and then to result the discharge between the main electrodes by disconnection of the auxiliary electrode by a bimetallic switch means. A second bimetallic switch means which delays the operation from that of the first bimetal, is connected in series to the first bimetallic switch means so as to discharge in a circuit formed in an outer bulb to break a part of the circuit and to prevent a ballast from overheating.
REFERENCES:
patent: 2329626 (1943-09-01), Krefft et al.
patent: 2464704 (1949-03-01), Martin et al.
patent: 2497542 (1950-02-01), Frech
patent: 2748315 (1956-05-01), Martin et al.
patent: 3746914 (1973-07-01), Olson et al.
patent: 4258288 (1981-03-01), Michael et al.
Fukuyama Keiji
Saito Masato
Takai Yoshinori
Tsuchihashi Michihiro
Watanabe Keiji
Chatmon, Jr. Saxfield
Mitsubishi Denki & Kabushiki Kaisha
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