Flash tube having enclosed trigger wire
AssigneeGTE Sylvania Incorporated
InventorsRobert J. Cosco, Joseph V. Lima, Frank Soucy
Life of this patent
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Abstract
A flash tube has an hermetically sealed glass envelope containing an inert gas and a pair of electrodes between which an arc discharge path is defined during lamp operation, and an external trigger wire which is embedded within a glass tube which, in turn, is fused to the outer surface of the envelope.
Claims2
In a flash tube having an hermetically sealed glass envelope containing an inert gas and a pair of electrodes between which an arc discharge path is defined during lamp operation, the improvement which comprises a tungsten trigger wire embedded within a glass tube which is fused to the outer surface of the envelope, the coefficient of expansion of the glass tube being intermediate that of the tungsten trigger wire and that of the glass envelope.
Dependencies are inferred from the claim text.