Arc tube having crystalline press seal penetration suppression m

Details Arc tube having crystalline press seal penetration suppression m Arc tube having crystalline press seal penetration suppression m

1988-08-08

1990-04-10

Wieder, Kenneth

Electric lamp and discharge devices

With temperature modifier

Double wall, jacket or casing for envelope

313613, 313623, 313631, 313634, H01J 6134, H01J 6110

Patent

active

049163515

ABSTRACT:
An arc tube for horizontal operation and arc discharge lamp employing same wherein the arc tube has devices in each end for suppressing crystalline deposit penetration into the arc tube press seals along the shanks of the main electrodes. Experimental evidence shows that crystalline penetration into a press seal weakens the press seal and is the likely cause of an occasional arc tube burst during lamp operation, a problem well known in the art. In a preferred embodiment, a starting electrode is mounted above the main electrode in each end of the operationally positioned arc tube. So placed, each starting electrode is upstream in the convective flow of the gaseous fill within the arc tube. Each starting electrode may be electrically coupled with the lamp's circuit or electrically isolated therefrom without substantially affecting the starting electrode's ability to suppress crystalline penetration of the press seal about the base of the adjacent main electrode. In a lamp in accordance with the invention, the probability of an arc tube burst during lamp operation has been substantially reduced and, consequently, the need for employment of protective measures or containment devices has been substantially reduced.

REFERENCES:
patent: 1985028 (1934-12-01), Gehrts
patent: 4056751 (1977-11-01), Gungle et al.
patent: 4208603 (1980-06-01), Graves et al.

Affiliated with

Also associated with

Rating

Arc tube having crystalline press seal penetration suppression m does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Arc tube having crystalline press seal penetration suppression m, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Arc tube having crystalline press seal penetration suppression m will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2300875