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:
May. 23, 2000
Filed:
Dec. 09, 1998
Applicant:
Inventors:
Kenji Fukaya, Chiryu, JP;
Masanobu Yamauchi, Kariya, JP;
Assignee:
Denso Corporation, , JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
73 2332 ; 73 2332 ; 422 90 ;
Abstract
An air fuel ratio sensor having an externally located heat source and an optical fiber heat introduction member. The heat introduction member is inserted into an inside chamber of a sensor element having a U-shaped cross section, and is connected to the external heat source outside the sensor element for introducing heat from the external heat source into the inside chamber. The heat introduction member is further connected to a temperature detector outside the sensor body. Accordingly, an air fuel ratio sensor can have sufficient durability and sufficient starting performance, and a temperature inside the sensor element can be readily detected.