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. 14, 2015
Filed:
Jun. 15, 2010
Yukinori Karihara, Tokyo, JP;
Ryoutarou Chiba, Tokyo, JP;
Satoshi Harada, Tokyo, JP;
Zenkou Obara, Tokyo, JP;
Daisuke Yaegashi, Tokyo, JP;
Shigeo Sugawara, Tokyo, JP;
Akira Onodera, Tokyo, JP;
Yukinori Karihara, Tokyo, JP;
Ryoutarou Chiba, Tokyo, JP;
Satoshi Harada, Tokyo, JP;
Zenkou Obara, Tokyo, JP;
Daisuke Yaegashi, Tokyo, JP;
Shigeo Sugawara, Tokyo, JP;
Akira Onodera, Tokyo, JP;
Senju Sprinkler Co., Ltd., Tokyo, JP;
Abstract
The present invention realizes a new actuated valve type water flow detection device that can be applied to a pipe with a relatively large bore diameter. The water flow detection device A includes a coil spring for urging a detection rod in an opening direction of a valve body. Therefore, while detecting water flow by linking a rotation of the detection rodto a rotation of the valve body when the valve body opens or closes by a differential pressure, the detection rod does not apply a closing load to the valve body that is released. Therefore, even when the rotation of the valve body is small because the water flow in the secondary side is small in a conventional actuated valve type water flow detection device, it is possible to increase an opening angle of the valve body.