Electric lamp and discharge devices: systems – Discharge device load – Plural cathode and/or anode discharge device load
Patent
1989-12-22
1991-01-29
Mis, David
Electric lamp and discharge devices: systems
Discharge device load
Plural cathode and/or anode discharge device load
315 73, 315 88, 315147, 313307, 313581, H05B 4100, H05B 4114, H05B 4146
Patent
active
049889257
ABSTRACT:
An arc discharge lamp which can be operated in any orientation without significant variation in performance includes an even number of electrodes at least equal to four, a discharge vessel including a spherical central portion and electrode mounting portions. The electrodes are mounted in the electrode mounting portions and have a substantially uniform three-dimensional distribution with respect to the central portion. The discharge lamp can be used in a lamp assembly including a switch apparatus for coupling electrical energy to a pair of the electrodes that is closest to a horizontal plane. An automatic switch apparatus includes orientation-sensitive switches, one having the same direction as each of the electrodes. The switches are interconnected such that electrical energy is coupled to a pair of electrodes in response to the orientation of the switch apparatus relative to a gravity field. The switch apparatus can be mounted in the base or within the lamp envelope of the lamp assembly.
REFERENCES:
patent: 3611015 (1971-10-01), Kim
GTE Products Corporation
Mis David
Romanow Joseph S.
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