Electric lamp and discharge devices: systems – Combined load device or load device temperature modifying... – Filament or electric heater in series with a discharge...
Reexamination Certificate
2006-08-01
2009-11-24
Vo, Tuyet (Department: 2821)
Electric lamp and discharge devices: systems
Combined load device or load device temperature modifying...
Filament or electric heater in series with a discharge...
C315S115000, C315S114000, C315S046000, C315S064000
Reexamination Certificate
active
07622868
ABSTRACT:
An inductively powered gas discharge lamp including both a power coil and a heating coils associated with each filament. The heating coils enable the filaments to be preheated before the starting voltage is applied through the power coils. The inductive power coils and the inductive heater coils are contained within the lamp envelope, allowing the lamp to be entirely sealed. A method of dimming the lamp also is disclosed. The lamp is dimmed by both decreasing the power applied to the power coils and increasing the power applied to the heating coils so as to prevent the arc from extinguishing under lower voltage conditions.
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Baarman David W.
Bachman Wesley J.
Lord John James
Stien Nathan P.
Access Business Group International LLC
Vo Tuyet
Warner & Norcross & Judd LLP
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