H - Electricity – 01 – J
Patent
H - Electricity
01
J
313/160
H01J 61/36 (2006.01) H01J 9/26 (2006.01)
Patent
CA 1143779
14 48,426 ABSTRACT OF THE DISCLOSURE An improved arc tube end seal and the method of forming that seal in a high pressure sodium discharge lamp is disclosed. The method includes precoating the refrac- tory metal end cap with a slurry of a mixture of refrac- tory metal powder and powdered metallic silicon and baking the end cap prior to accomplishing the bonding of the end cap to the arc tube with a conventional sealing frit.
350501
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