SURGE PROTECTIVE DEVICE
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United States of America Patent
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Issued Date -
Dec 13, 2018
app pub date -
Oct 26, 2016
filing date -
Oct 26, 2016
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Abstract
To provide a surge protective device that can suppress the sublimation and disappearance of a discharge-assisting part and can improve the durability thereof. The surge protective device comprises an insulating tube, a pair of sealing electrodes for closing openings on the both ends of the insulating tube so as to seal a discharge control gas inside the tube, and a discharge-assisting part formed on the inner circumferential surface of the insulating tube, wherein the pair of sealing electrodes have a pair of convex electrode portions projecting inwardly and facing to each other, and the discharge-assisting part is composed of a laminate of an insulating layers made of an insulating material and ion-source layers made of an ion-source material that are formed on the top and bottom surfaces of the insulating layer.
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