Title: Spark gap device for a lightning arrestor

Abstract: Within an arc extinguishing chamber are disposed a pair of main electrodes so as to cause a spark starting gap to be defined therebetween. A single auxiliary electrode is also disposed so as to cause reignition in those interspaces between the auxiliary electrode and the respective main electrodes at positions distant from said spark starting gap. Further, paths for supplying therethrough a heated gas to the reigniting spark gaps when the feet at one side of the arcs between the respective main electrodes and the auxiliary electrode have arrived at the prescribed points of the auxiliary electrode are provided.

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Inventors: Murano, Minoru (Tokyo, JA)
Yanabu, Satoru (Yokohama, JA)
Nishiwaki, Susumu (Yokohama, JA)
Kojima, Soji (Yokosuka, JA)
Ueki, Teiichi (Yokohama, JA)

Application Number: 562770
Filing Date: 1975-03-27
Publication_date: 1976-07-06
Assignee: Tokyo Shibaura Electric Co., Ltd. (Kawasaki, JA)
Primary Class(es): 313/325 315/35, 361/117, 361/129
Other Classes:
US Patent Ref:

3443149	May, 1969	Hazen	315/36.
3576459	Apr, 1971	Sakshaug et al.	313/325.
3614536	Oct, 1971	Johansson	313/325.
3663856	May, 1972	Misk, Jr.	315/36.
3688155	Aug, 1972	Johansson et al.	315/36.
3883774	May, 1975	Volkenau et al.	315/36.

Other Refs:
Primary Examiner: Chatmon, Jr., Saxfield
Assistant Examiner:
Attorney: Finnegan, Henderson, Farabow & Garrett