公开(公告)号：US3701578A

公开(公告)日：1972-10-31

申请号：US3701578D

申请日：1969-01-31

Applicant: ROGER A KREY

Inventor： KREY ROGER A

IPC: H01J5/40 ,  H01K1/28 ,  H01K3/00 ,  H01J9/18

CPC classification number: H01K3/00 ,  H01J5/40 ,  H01J2893/0035 ,  H01K1/28

Abstract: A METHOD OF MAKING A CERAMIC LIGHT BULB OR OTHER ELECTRICAL DEVICE HAVING A CERAMIC ENVELOPE PORTION FORMED OF A TRANSLUCENT CERAMIC MATERIAL AND A METAL CLOSURE MEMBER. THE CERAMIC MATERIAL IS METALIZED IN DESIRED AREAS. THE METAL CLOSURE MEMBER IS ASSEMBLED WITH THE CERAMIC ENVELOPE AND A FILAMENT IS MOUNTED WITHIN THE ENVELOPE WITH OPPOSITE ENDS IN CONTACT WITH METALIZED PORTIONS OF THE ENVELOPE. BRAZING METAL IS PLACED AT ALL CONTACT AREAS BETWEEN THE ENVELOPE AND THE CLOSURE MEMBER. THE ASSEMBLY IS THEN HEATED IN A FURNACE AT A TEMPERATURE AND TIME SUFFICIENT TO BRAZE THE ASSEMBLY INTO AN HERMETICALLY SEALED DEVICE.