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:
Apr. 13, 1999
Filed:
May. 20, 1997
Toyohiko Torii, Tokyo, JP;
Tetsumi Murata, Tokyo, JP;
Keiichi Mori, Osaka, JP;
Hisao Ikawa, Osaka, JP;
Kawaso Electric Industrial Co., Inc., Osaka, JP;
Abstract
An apparatus for measuring oxygen within a molten substance comprises a compact oxygen probe unit constructed by assembling a tubular shell whose one end is closed, which is made of solid electrolyte and which is to be soaked into the molten substance to be measured, a metal cylinder which surrounds the outer periphery of the shell and which serves also as an outer electrode and a sheath thermocouple which is inserted to a reference pole provided within an inner face of the shell and which serves also as an inner electrode to a terminal box. The metal cylinder comprises a protecting cylinder portion which surrounds the outer periphery of the shell and an opening for exposing the closed end of the shell. Both element wires of the sheath thermocouple are connected to temperature measuring means via the terminal box. The inner electrode formed by one element wire of the thermocouple and the outer electrode formed by the metal cylinder are connected to electromotive force measuring means also via the terminal box.