公开(公告)号：US20230313512A1

公开(公告)日：2023-10-05

申请号：US18121770

申请日：2023-03-15

Applicant: TOTO LTD.

Inventor： Yuta KONDO ,  Koichiro Hiwa ,  Yuki SHIMOKAWA ,  Kenji HATAMA ,  Haruki MATSUDA

IPC: E03D1/14 ,  E03D1/34

CPC classification number: E03D1/142 ,  E03D1/34 ,  E03D2201/40

Abstract: The present invention is a flush water tank device including a flush water tank main body, a water supply valve, and a discharge valve, in which during a flush of the flush toilet, the discharge valve is opened until a water level in the flush water tank main body is lowered from a predetermined full water level to a predetermined dead water level, a lowering speed of the water level in the flush water tank main body changes at a predetermined inflection water level between the full water level and the dead water level, and the lowering speed of the water level between the inflection water level and the dead water level is faster than the lowering speed of the water level between the full water level and the inflection water level.

公开(公告)号：US11111658B2

公开(公告)日：2021-09-07

申请号：US16579646

申请日：2019-09-23

Applicant: TOTO LTD.

Inventor： Tsubasa Miyake ,  Hironori Yamasaki ,  Mitsuhiro Suenaga ,  Takashi Yoshioka ,  Koichiro Hiwa

IPC: E03D3/06 ,  E03D11/10 ,  E03D5/10 ,  E03D5/01

Abstract: A flush toilet includes: a water supply channel that allows flush water to be supplied from a flush water storage tank to a rim spout port and a jet spout port; and a switching device that switches a water supply path so as to execute a first flushing process of spouting the flush water in the water supply channel from the rim spout port and after that, execute a second flushing process of spouting the flush water in the water supply channel from at least the jet spout port. The switching device includes a switching valve body that operates by receiving the water pressure of the flush water pressurized by a pressure pump. This switching valve body performs switching to a water supply path that allows the first flushing process or the second flushing process to be executed according to the water pressure generated by the pressure pump.