Method for making a capped electric lamp by using reduced intern

Details Method for making a capped electric lamp by using reduced intern Method for making a capped electric lamp by using reduced intern

1998-02-06

1999-11-16

Patel, Nimeshkumar D.

Electric lamp and discharge devices

With gas or vapor

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

313624, 313634, 445 26, 445 43, H01J 546, H01J 932

Patent

active

059864036

ABSTRACT:
A quartz glass vessel having mutually opposed first and second neck-shaped portions is heated over the first neck-shaped portion while flushing the vessel with gas, then pinched over an external current wire and collapsed over a metal foil by means of reduced pressure to form a seal. The second neck-shaped portion may also be collapsed over a metal foil by reduced pressure in the lamp vessel to form a seal. The seals are preferably shaped to form flat external surfaces.

REFERENCES:
patent: 3868528 (1975-02-01), Lake et al.

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