Electric lamp and discharge devices: systems – Combined load device or load device temperature modifying... – Electric switch inside evacuated or gas filled envelope
Patent
1982-04-13
1985-01-29
Chatmon, Saxfield
Electric lamp and discharge devices: systems
Combined load device or load device temperature modifying...
Electric switch inside evacuated or gas filled envelope
313493, 362216, 315 56, 315 58, 315DIG5, H01J 744, H01J 1734, H01J 1978, H01J 2996
Patent
active
044968787
ABSTRACT:
In the preferred version of the invention, the lamp-starter combination is mounted on a three-terminal screw-base of the type used with regular three-way incandescent lamps; and the two terminals required for operating the lamp-starter combination are connected with the outer threaded terminal and the middle (or the third) terminal of the base--leaving the center terminal non-connected. By using this version of a screw-base-mounted fluorescent lamp in a lamp socket of the type used with three-way incandescent lamps--but without having a switch in the socket--and by connecting the power line voltage to the third socket electrode by way of the current-limiting inductor means, this lamp will properly operate therein. Yet, if by mistake this lamp is inserted into a regular one-way incandescent-type lamp socket furnished with a non-current-limited power line voltage, the lamp will not be destroyed. Moreover, by connecting the non-current-limited power line voltage to the center electrode of this socket, regular one-way incandescent lamps may be properly used therein, thereby providing for a lamp socket that is adapted to properly using either a regular incandescent lamp or, alternately and interchangeably, a non-self-ballasted fluorescent lamp.
REFERENCES:
patent: 4178535 (1979-12-01), Miller
patent: 4318160 (1982-03-01), Dooley et al.
patent: 4334179 (1982-06-01), Wyner et al.
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