Safety filament assembly for double-enveloped arc discharge lamp

Details Safety filament assembly for double-enveloped arc discharge lamp Safety filament assembly for double-enveloped arc discharge lamp

1990-06-15

1991-09-24

LaRoche, Eugene R.

Electric lamp and discharge devices: systems

Combined load device or load device temperature modifying...

Electric switch inside evacuated or gas filled envelope

315 74, 315 49, H01J 744, H01J 1346, H01J 1734, H01J 1978

Patent

active

050516574

ABSTRACT:
An electric lamp assembly includes a sealed outer envelope, an arc discharge tube mounted within the outer envelope, a safety filament connected in series with the arc discharge tube for extinguishing the arc tube within a predetermined time after the outer envelope is broken, and an electrically-insulating sleeve disposed around the safety filament. The insulating sleeve suppresses emission of electrons from the safety filament and thereby prevents a reduction in frame potential which would increase sodium loss from the arc tube. The insulating sleeve includes openings which permit air to reach the safety filament when the outer envelope is broken. A mounting arrangement includes a pair of mounting tabs which provide electrical connections for the safety filament and which approximately centers the safety filament in the insulating sleeve.

REFERENCES:
patent: 4888517 (1989-12-01), Keefee

Affiliated with

Also associated with

Rating

Safety filament assembly for double-enveloped arc discharge lamp does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Safety filament assembly for double-enveloped arc discharge lamp, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Safety filament assembly for double-enveloped arc discharge lamp will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1699015