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:
Jul. 29, 2008
Filed:
Dec. 22, 2004
Takeshi Abe, Tokyo, JP;
Yasuhiko Shinozawa, Tokyo, JP;
Yoshinobu Miyagi, Tokyo, JP;
Kouichiro Yamada, Tokyo, JP;
Tomohide Machida, Tokyo, JP;
Takeshi Abe, Tokyo, JP;
Yasuhiko Shinozawa, Tokyo, JP;
Yoshinobu Miyagi, Tokyo, JP;
Kouichiro Yamada, Tokyo, JP;
Tomohide Machida, Tokyo, JP;
Tokyo Gas Co., Ltd, Tokyo, JP;
Abstract
A technique for quickly determining the type of liquid in a container externally regardless of the material of the container, preferably contactlessly. A halogen heaterand an infrared thermopileare disposed outside an electrically conductive containermade of aluminum, for example. The surface temperature of the containeris measured when the halogen heateris off, followed by the turning-on of the halogen heaterfor two seconds, for example. The surface temperature of the containeris then measured, and a difference from the previous result of measurement is calculated. If the difference is smaller than a threshold value, the liquid in the container is determined to be a safe liquid consisting primarily of water, and a blue lamp is activated. If the difference is greater than the threshold value, the liquid in the container cannot be determined to be a safe liquid consisting primarily of water, and a red lamp is activated, indicating abnormality.