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. 25, 2020
Filed:
Apr. 18, 2017
Toto Ltd., Kitakyushu-shi, Fukuoka, JP;
Kenichi Hashimoto, Kitakyushu, JP;
Hideyuki Matsui, Kitakyushu, JP;
Makoto Hatakeyama, Kitakyushu, JP;
Kohei Kawana, Kitakyushu, JP;
Tetsuro Kamiyoshi, Kitakyushu, JP;
Masanobu Kanashiro, Kitakyushu, JP;
TOTO LTD., Kitakyushu-shi, Fukuoka, JP;
Abstract
The present invention is a flow-rate adjustable valve for adjusting a flow rate of liquid flowing through a flow path. The flow-rate adjustable valve includes: a main valve body movably supported in the flow path via a diaphragm membrane; a back pressure chamber; a plurality of inlet holes communicating the upstream side of the flow path with the back pressure chamber; an outlet hole communicating a downstream side of the flow path with the back pressure chamber; and a pilot valve body for opening and closing the outlet hole, wherein moments acting on the main valve body based on the liquid flowing into the back pressure chamber through the plurality of inlet holes are canceled by each other in total, under a condition in which the pilot valve body opens the outlet hole.