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. 10, 1990
Filed:
Apr. 20, 1988
Kazuyoshi Shibata, Nagoya, JP;
Yoshihiko Mizutani, Nagoya, JP;
NGK Insulators, Ltd., , JP;
Abstract
A heater-built-in sensor for detecting a component in a measurement gas, including an electrochemical cell having a solid electrolyte body, and a pair of electrodes formed on the solid electrolyte body, a heater for heating at least a detecting portion of the cell which includes the measuring electrode, and a protective covering device disposed around the detecting portion. The covering device includes a gas-inlet portion for introducing the measurement gas to the measuring electrode, and a thermally insulating portion for preventing dissipation of a heat generated by the heater. The thermally insulating portion, which is separated from the gas-inlet portion, is adapted to surround the detecting portion so as to prevent the measurement gas from flowing to and from any parts of the detecting portion, except a part at which the measuring electrode is located.