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:
Dec. 16, 2008
Filed:
Jul. 14, 2004
Takeshi Abe, Tokyo, JP;
Yasuhiko Shinozawa, Tokyo, JP;
Tomohide Machida, Tokyo, JP;
Kouichiro Yamada, Tokyo, JP;
Takeshi Abe, Tokyo, JP;
Yasuhiko Shinozawa, Tokyo, JP;
Tomohide Machida, Tokyo, JP;
Kouichiro Yamada, Tokyo, JP;
Tokyo Gas Co., Ltd., Tokyo, JP;
Abstract
[Theme] To provide a device or a judging method for judging the type of liquid inside a container that can be applied to containers of various shapes and can be applied to cases where the remaining amounts of liquids in containers differ. [Solution Means] This invention's device for judging the type of liquid inside a container is equipped with: a plate capacitor, wherein two plate electrodesandare positioned in opposing manner; a container supporting member, holding, in a region besides the region sandwiched between plate electrodesand, a non-conductive containerthat can contain a liquid in its interior; an oscillation circuit, containing capacitor; and a control part, detecting the oscillation frequency of the oscillation circuit; and container supporting memberis arranged to adjust the distance from plate electrodeto containerin accordance with the size of container. Also, a third electrode, of the same electric potential as plate electrode, is disposed in contact with a bottom part of container