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. 16, 2024
Filed:
Sep. 01, 2021
Toto Ltd., Kitakyushu, JP;
Akihiro Shimuta, Kitakyushu, JP;
Hidekazu Kitaura, Kitakyushu, JP;
Nobuhiro Hayashi, Kitakyushu, JP;
Masahiro Kuroishi, Kitakyushu, JP;
Hiroshi Hashimoto, Kitakyushu, JP;
Koki Shinohara, Kitakyushu, JP;
Kenji Hatama, Kitakyushu, JP;
Takashi Yoshioka, Kitakyushu, JP;
TOTO LTD., Kitakyushu, JP;
Abstract
A flush water tank apparatus has a reservoir tank, a discharge valve, a discharge valve hydraulic drive portion configured to drive the discharge valve, and a discharge/vacuum break valve device configured to supply the water supplied from the upstream side to the discharge valve hydraulic drive portion on a downstream side. The discharge valve hydraulic drive portion includes a cylinder, and a piston configured to be moved by a pressure of the water flowing into the cylinder to move the discharge valve. The discharge/vacuum break valve device includes a valve body that operates to discharge the water flowing backward from the discharge valve hydraulic drive portion while opening the upstream side to an atmosphere when the supply of the water from the upstream side is stopped.