The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Nov. 06, 2001

Filed:

Jul. 12, 2000
Applicant:
Inventor:

Kazuhiko Machida, Nagano, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J 6/154 ;
U.S. Cl.
CPC ...
H01J 6/154 ;
Abstract

An electrical discharge tube comprises a cylindrical body, made of insulating material, having an inner surface, and having end faces defining respective openings. Metallized layers are formed on the respective end faces of the cylindrical body and are substantially parallel to each other. Electrodes airtightly close the respective openings by means of the metallized layers and have respective electrical discharge faces, between which an electrical discharge gap is defined. At least one first electrical discharge trigger wire is formed as a loop on the inner surface of the cylindrical body and extends substantially in parallel to the metallized layers along a first surface located within a range of the electrical discharge gap. At least one second electrical discharge trigger wire is formed on the inner surface of the cylindrical body and extends from the upper metallized layer to a fourth surface located between a second surface including the electrical discharge face of the upper electrode and the upper metallized layer.


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