Method of making high pressure tungsten halogen lamps

Details Method of making high pressure tungsten halogen lamps Method of making high pressure tungsten halogen lamps

1983-03-30

1985-04-09

Ramsey, Kenneth J.

Electric lamp or space discharge component or device manufacturi

Process

With assembly or disassembly

445 39, 445 54, H01J 9395

Patent

active

045099286

ABSTRACT:
A method of making a high pressure, tungsten halogen lamp wherein a predetermined quantity of a gas mixture including an inert gas (e.g., argon) and halogen compound (e.g., methyliodide) are introduced into the retained tubular member which eventually comprises the sealed envelope of the lamp. This gas mixture is then cooled sufficiently to form either a pool of liquified gas or, alternatively, a frozen, solidified member. A quantity of nitrogen gas established at a predetermined atmospheric pressure is then introduced into the tubular member through the remaining open end while a press sealing operation is accomplished to seal the end. The result is a finished lamp possessing an elevated internal pressure (e.g., three atmospheres) of the described inert gas, halogen and hydrogen.

REFERENCES:
patent: 2870586 (1959-01-01), Pearson et al.
patent: 3162499 (1964-12-01), Gustin
patent: 3311439 (1967-03-01), Pace
patent: 3589790 (1971-06-01), Beane
patent: 3788724 (1974-01-01), Schenkels et al.

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