Discharge vessel for high pressure sodium vapor lamps

Details Discharge vessel for high pressure sodium vapor lamps Discharge vessel for high pressure sodium vapor lamps

1982-01-07

1984-07-10

Demeo, Palmer C.

Electric lamp and discharge devices

Having vapor generating material

Mercury vapor material

313625, H01J 6120, H01J 6122, H01J 6136

Patent

active

044595093

ABSTRACT:
A tubular discharge vessel for high pressure sodium vapor lamps has a wall 1 made of light-transmitting material. The tube 1 is hermetically sealed at each end by a respective ceramic stopper 2 through which is passed a respective current lead-in wire 11. An electrode 8 is joined via a shank 10 to the current lead-in wire 11. The interior of the tube is filled with noble gas(es) and metal additive(s), e.g. sodium, mercury and/or cadmium. A cavity 9, preferably of rotationally symmetrical shape is formed in at least one of the stoppers 2. In operation of the discharge tube the cavity 9 is the cold spot. i.e. the internal wall of the lowest temperature. The volume of the cavity 9 is at least equal to the volume of the metal additives in their liquid phase. In this way, in operation of the tube, the metal additives always condense in the cavity, the vitreous enamel bonds between the tube wall and the stoppers are free from chemically aggressive effects and whereby the self-stabilizing thermal processes taking place in the discharge vessel are promoted.

REFERENCES:
patent: 4065691 (1977-12-01), McVey
patent: 4376905 (1983-03-01), Kerekes

Affiliated with

Also associated with

Rating

Discharge vessel for high pressure sodium vapor lamps does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Discharge vessel for high pressure sodium vapor lamps, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Discharge vessel for high pressure sodium vapor lamps will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1578153