Surge absorber and production method therefor

Electricity: electrical systems and devices – Safety and protection of systems and devices – High voltage dissipation

Reexamination Certificate

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C361S111000

Reexamination Certificate

active

07733622

ABSTRACT:
This surge absorber includes an insulating part upon which is formed a conductive layer which is divided into two separate portions by a discharge gap (micro gap) around its circumferential surface; a pair of terminal electrodes which are arranged to oppose the insulating part, and contacts the conductive layer; an insulating tube at the ends of which the terminal electrodes are arranged, and which seals the insulating part in its interior along with seal gases; and a conductive portion provided at least between the terminal electrodes and the conductive layer. As a result, it becomes possible to provide a surge absorber of lower cost, and which is endowed with stabilized performance and high quality, while moreover it exhibits excellent durability.

REFERENCES:
patent: 4355345 (1982-10-01), Franchet
patent: 5184273 (1993-02-01), Tanaka et al.
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patent: 2000-138089 (2000-05-01), None
patent: 2000-243534 (2000-09-01), None
patent: 2000-268934 (2000-09-01), None
patent: 2002-110311 (2002-04-01), None
patent: 2002-134247 (2002-05-01), None
patent: 2003-31337 (2003-01-01), None
Abstract for JP 04-043584. Feb. 1992.
Abstract for JP 2000-138089. May 2000.
Translation for Japanese Publication 2000-138089 (Application No. 10-298521). May 2000. The foreign patent document was submitted by Applicant on Aug. 25, 2005.
U.S. Appl. No. 11/692,610, filed Mar. 28, 2007, Shato, et al.

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