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:
Aug. 13, 1985
Filed:
Mar. 26, 1984
Harry P Wertheimer, Findlay, OH (US);
Thomas A Libsch, Novi, MI (US);
Jerome L Pfeifer, Livonia, MI (US);
Paul C Becker, Bloomfield Hills, MI (US);
Allied Corporation, Morristown, NJ (US);
Abstract
A heated resistive type sensor (20) for detecting the oxygen content in an exhaust gas is connected to an electronic control unit (22) for regulating the air/fuel ratio used to operate an internal combustion engine (10). The sensor (20) has a heater (70) which provides a constant thermal energy level to a titania sensing element (76) whose resistance to the flow of electrical current is directly related to the percentage of oxygen in the exhaust gas. The electrical resistance is used as a control signal to maintain the air/fuel ratio within set limits. The resistive portion consists of three resistive elements, one that senses O.sub.2 that is made of titania - TiO.sub.2, the other two resistors are thick film type connected in series thereto. Finally, the gas sensing layer and electrode leads attached thereto are covered by a protective glass layering to prevent contamination of the sensor element.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile