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.
Patent No.:
Date of Patent:
Nov. 04, 2008
Filed:
Apr. 14, 2005
Yusuke Makino, Aichi, JP;
Yusuke Makino, Aichi, JP;
NGK Spark Plug Co., Ltd., Aichi, JP;
Abstract
A switchincludes a ceramic cylindrical tube, first and second end capsandthat cover the open end in an axial direction of the ceramic cylindrical tube, a movable electrodewhich slides easily on first end capand a fixed electrodeattached to second end cap. The ceramic cylindrical tubeis a ceramic fired body that contains 45 to 65% by weight of alumina and 35 to 55% by weight of crystallized glass. First and second end capsandare attached to both ends in the axial direction of the ceramic cylindrical tube. A low temperature metallizing layer is formed on the ends thereof, and a plating layer is formed on top of the metallizing layer where first and second end capsandare brazed.