Electric lamp and discharge devices: systems – Regulation of the control current and/or potential applied... – Discharge control discharge device in the control circuit
Patent
1984-01-20
1986-06-03
Chatmon, Saxfield
Electric lamp and discharge devices: systems
Regulation of the control current and/or potential applied...
Discharge control discharge device in the control circuit
315 64, 315294, 315312, 315313, 315315, 323243, 323288, G05F 100, H05B 4136, H05B 3702, H05B 3904
Patent
active
045932328
ABSTRACT:
An apparatus for use with an electrical lamp to control the electrical energy from a source of electrical power to the lamp to simulate the emission of a flame, the apparatus including an intensity controller section having first and second manually adjustable signal generating devices, the first being settable to the desired average brightness of the lamp, and the second being settable to a desired "flicker intensity". The flicker is effected by means of circuitry effectively providing a modulation about the value of the first signal. The magnitude of "flickering" may be reduced to zero permitting un-modulated full range light dimming control. A phase-angle controllable switching device in circuit relation with the lamp is actuated by a gate circuit within the circuitry. One or more lamps may be employed. The apparatus is modular to accommodate the flame simulation effect on a plurality of lamps or a plurality of sets of lamps with single point master control over independently "flickering" lighting circuits. A novel multiple filament lamp for use in simulating the motion of flame has at least two filaments angularly disposed relative to each other within an envelope, with each filament independently energizable. An alternate embodiment of the lamp includes a third filament within a colored glass envelope with the two filaments being intermediate the colored glass envelope and the primary envelope.
REFERENCES:
patent: 1863500 (1932-06-01), Piersimoni
patent: 3074008 (1963-01-01), McPhail et al.
patent: 3416028 (1968-12-01), Levin
patent: 3706913 (1972-12-01), Malatchi
patent: 4064414 (1977-12-01), Bergeson et al.
patent: 4080548 (1978-03-01), Johnson
patent: 4379254 (1983-04-01), Hurban
patent: 4417182 (1983-11-01), Weber
Chatmon Saxfield
Mesaros John G.
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