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:
Sep. 26, 1989
Filed:
Jul. 01, 1988
Applicant:
Inventors:
Kazuhiro Kozuka, Aichi, JP;
Toshihiro Ozasa, Aichi, JP;
Hideaki Takahashi, Aichi, JP;
Haruyoshi Kondo, Aichi, JP;
Assignee:
Kabushiki Kaisha Toyota Chuo Kenkyusho, Aichi, JP;
Primary Examiner:
Int. Cl.
CPC ...
G01M / ;
U.S. Cl.
CPC ...
73-26 ; 7386481 ;
Abstract
A gas sampling valve is provided with a small opening for gas sampling and a gas flow channel communicating therewith and is adapted to sample a gas in the gas flow passage by operating a valve for opening and closing the small opening, wherein at least one detector for detecting the concentration of oxygen or combustion gas is disposed in the gas flow passage, whereby the concentration of oxygen, an air excess ratio, the combustion efficiency, or the like can be measured without using a separate analyzer.