Discharge tube for a high pressure metal vapor discharge lamp an

Details Discharge tube for a high pressure metal vapor discharge lamp an Discharge tube for a high pressure metal vapor discharge lamp an

1987-05-28

1989-01-24

Moore, David K.

Electric lamp and discharge devices

With gas or vapor

Having electrode lead-in or electrode support sealed to...

313636, 445 26, H01J 1718, H01J 6136

Patent

active

048003204

ABSTRACT:
A discharge tube for a high pressure metal vapor discharge lamp is disclosed, which comprises a translucent alumina tubular body, first and second end plates of cermet having a firing shrinkage factor which is less than that of the translucent alumina tubular body, end first and second electrode support members partially embedded in inner sides of the first and second end plates, respectively. The first end plate is fitted to the first end portion of the alumina tubular body and bonded thereto through shrinkage fitting at a shrinkage fitting ratio of the tubular body to the first end plate being from 3 to 6% during a simultaneous sintering of the first end plate to the tubular body and a simultaneous bonding of the first electrode support member to the first end plate through shrinkage fitting at a shrinkage fitting ratio of the first end plate to the first electrode support member being from 4 to 16% when the alumina tubular body is fired to be translucent. The second end plate is fitted to the second opposite end portion of the tubular body and is bonded thereto by means of a frit. When the discharge lamp is in use, the second opposite end portion is located at a vertically higher position than the first opposite end portion. A method of producing such discharge tubes is also disclosed.

REFERENCES:
patent: 3885184 (1975-05-01), Schat et al.
patent: 4503356 (1985-03-01), Kobayashi et al.
patent: 4507584 (1985-03-01), Coaton et al.
patent: 4563214 (1986-01-01), Seddon et al.
patent: 4687969 (1987-08-01), Kajihara et al.
"Lamps and Lighting" 2nd Ed. pp. 244-246, Henderson & Marsden Ed., Edward Arnold Publishers, London 1975.

Affiliated with

Also associated with

Rating

Discharge tube for a high pressure metal vapor discharge lamp an 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 tube for a high pressure metal vapor discharge lamp an, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Discharge tube for a high pressure metal vapor discharge lamp an will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-420765