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:
Feb. 05, 1991
Filed:
Feb. 09, 1990
Yoshiki Chujo, Mishima, JP;
Toyota Jidosha Kabushiki, Toyota, JP;
Abstract
An oxygen sensor having a body formed of a solid electrolyte material on which electrodes are provided, and a diffusion chamber formed on one side of the body. The diffusion chamber is connected to the space in which the gas to be detected exists, i.e., the interior of the intake or exhaust pipe of an internal combustion engine. A plate is mounted on the body in which a pin-hole is formed for controlling the speed of diffusion of oxygen ions so that the concentration of oxygen ions in the diffusion chamber is equal to that in the detection space. A pore of pores is provided in a plate member forming the diffusion chamber, to enable a rapid equalization of the pressures of the detection space and diffusion chamber while maintaining a control of the diffusion of oxygen ions via the pin-hole.