公开(公告)号：US20250043559A1

公开(公告)日：2025-02-06

申请号：US18783541

申请日：2024-07-25

Applicant: TOTO LTD.

Inventor： Kenichi NAKAMURA ,  Hiroshi HASHIMOTO ,  Shinichi URATA ,  Takumi TSUCHITANI ,  Chisato SONE ,  Jing CHEN ,  Wataru ISHIMI ,  Naoki ABE ,  Daisuke YAMAMOTO

IPC: E03D11/08

Abstract: A flush toilet includes a reservoir tank, a bowl, a rim spout port, a discharge trap conduit, a jet spout port configured to spout flush water toward an inlet of the discharge trap conduit, a jet water conduit configured to supply the flush water from the reservoir tank to the jet spout port, and a discharge device configured to supply or stop supplying the flush water to the jet water conduit, wherein the flush water is spouted at a first flow rate from the jet spout port when the discharge device is driven and the flush water in the reservoir tank flows into the jet water conduit and, after spouting of the first flow rate ends, the flush water is spouted at a second flow rate from the jet spout port due to the flush water retained in the jet water conduit flowing toward the jet spout port.

公开(公告)号：US20230313513A1

公开(公告)日：2023-10-05

申请号：US18121705

申请日：2023-03-15

Applicant: TOTO LTD.

Inventor： Takumi TSUCHITANI ,  Kenichi NAKAMURA ,  Hiroshi HASHIMOTO ,  Shinichi URATA ,  Chisato SONE ,  Koichiro MATSUMURA

IPC: E03D1/26 ,  E03D1/34

CPC classification number: E03D1/263 ,  E03D1/34 ,  E03D1/33

Abstract: The present invention is a flush toilet apparatus including a flush toilet main body that includes a bowl, a water discharge trap pipe, an upper water discharge port, and a lower water discharge port, and a flush control device configured to execute a large flush mode and a small flush mode, in which the flush control device causes the flush water to be discharged from the lower water discharge port with substantially the same amount in each of the large flush mode and the small flush mode to induce a siphon phenomenon in the water discharge trap pipe, while controlling the water discharge from the upper water discharge port so that a water level of pooled water in the bowl during the water discharge from the lower water discharge port is changed between the large flush mode and the small flush mode.

公开(公告)号：US20200063426A1

公开(公告)日：2020-02-27

申请号：US16543339

申请日：2019-08-16

Applicant: TOTO LTD.

Inventor： Akira SHINOMIYA ,  Hiroshi HASHIMOTO ,  Takashi OGAMI ,  Takumi TSUCHITANI ,  Isami SAKABA ,  Haruka SAITO

IPC: E03D11/17

Abstract: A flush toilet of the present invention includes a bowl portion for receiving waste and a discharge trap conduit connected to a lower portion of the bowl portion and extending to a discharge opening. The discharge trap conduit includes an ascending conduit ascending rearward from the lower portion of the bowl portion and a descending conduit descending from a downstream end of the ascending conduit to the discharge opening. The descending conduit includes a bottom surface on a rear side of the discharge opening, and a ceiling sloping surface, an upper end of the ceiling sloping surface being formed integrally with a bottom surface of a top portion of the ascending conduit, the ceiling sloping surface being formed on a front side of the discharge trap passage, and the ceiling sloping surface being inclined downward and forward from the upper end to a lower end of the discharge trap passage.

公开(公告)号：US20250043561A1

公开(公告)日：2025-02-06

申请号：US18779213

申请日：2024-07-22

Applicant: TOTO LTD.

Inventor： Koichiro MATSUMURA ,  Takumi TSUCHITANI ,  Kenichi NAKAMURA ,  Hiroshi HASHIMOTO ,  Chisato SONE ,  Shinichi URATA ,  Daisuke YAMAMOTO ,  Koichi MOTOOKA ,  Kenji HATAMA

IPC: E03D11/11 ,  E03D1/30

Abstract: A siphon jet flush toilet comprises: a bowl; a rim spout port suppling flush water to the bowl; a discharge trap conduit; a jet spout port spouting flush water toward an inlet of the discharge trap conduit; a reservoir tank including a jet spouting discharge valve and storing flush water; a jet water conduit configured to guide the flush water in the reservoir tank to the jet spout port; and a controller being configured to control a rim spouting in which the flush water is spouted from the rim spout port and a jet spouting in which the flush water is spouted from the jet spout port, wherein the jet spouting discharge valve includes a valve body, the valve body being arranged at a position that is lower than an upper surface of the bowl and higher than a seal water level, and before opening the jet spouting discharge valve, the flush water is supplied to the jet water conduit.

公开(公告)号：US20230066417A1

公开(公告)日：2023-03-02

申请号：US17822650

申请日：2022-08-26

Applicant: TOTO LTD.

Inventor： Hiroshi HASHIMOTO ,  Kenichi NAKAMURA ,  Takumi TSUCHITANI ,  Shinichi URATA ,  Chisato SONE ,  Koichiro MATSUMURA

IPC: E03D11/08 ,  E03D1/34 ,  E03D1/38

Abstract: The present invention provides a flush toilet device (1) including: a flush toilet (2); a flush water tank (10); a discharge valve (12) that discharges the flush water stored in the flush water tank; a branching portion (33) that splits flush water supplied from a water supply source into first and second branched flow paths; a first on-off valve (19) provided in the first branched flow path and switches between spout and stop of the flush water from the upper spout port; a second on-off valve (17) provided in the second branched flow path and switches between supply and stop of the flush water into the flush water tank; and a controller (28) that controls the first and second on-off valve so that water is spouted from the upper spout port and is supplied into the flush water tank at a time by opening the first and second on-off valves.

公开(公告)号：US20200063425A1

公开(公告)日：2020-02-27

申请号：US16543322

申请日：2019-08-16

Applicant: TOTO LTD.

Inventor： Akira SHINOMIYA ,  Hiroshi HASHIMOTO ,  Takashi OGAMI ,  Isami SAKABA ,  Haruka SAITO ,  Takumi TSUCHITANI

IPC: E03D11/17

Abstract: The flush toilet of the present invention includes a bowl which receives waste; and a discharge trap conduit which is connected to a lower portion of the bowl and extends to a discharge opening connected to an inlet of an external discharge pipe and a part of which stores sealing water. The discharge trap conduit includes: an ascending conduit which ascends rearward from the lower portion of the bowl; and a descending conduit that descends from a downstream end of the ascending conduit to the discharge opening. The descending conduit includes a bottom surface on the rear side of the discharge opening and a guiding portion formed on the bottom surface which guides the wastewater flowing horizontally from the bottom surface toward the discharge opening to be directed to either a left or right side of the center of the discharge opening.

公开(公告)号：US20180080208A1

公开(公告)日：2018-03-22

申请号：US15697741

申请日：2017-09-07

Applicant: TOTO LTD.

Inventor： Hiroshi HASHIMOTO ,  Shinichi URATA ,  Shuichi NAGASHIMA ,  Mayu OKUBO ,  Shoko IMAIZUMI ,  Daisuke YAMAMOTO ,  Kenichi NAKAMURA ,  Takumi TSUCHITANI

IPC: E03D11/08

CPC classification number: E03D11/08 ,  E03D2201/30 ,  E03D2201/40

Abstract: The present invention is a flush toilet (1) including: a bowl portion (8) having a bowl-shaped waste receiving surface (16), a rim portion (18), and a well portion (20) formed at the bottom of the waste receiving surface; a discharge trap pipe (12) connected to the bottom portion of the well portion; a flush water guide portion (40b) disposed on the waste receiving surface at the rear of the well portion so that flush water is directed toward the side wall surface inside the well portion; and a liquid membrane spouting portion (24) disposed on the rim portion, wherein this liquid membrane spouting portion induces a vertical circulating flow in the well portion, produced when discharged flush water assumes a liquid membrane form and collides with a flush water guide portion, and the colliding flush water drops along the side wall surface of the well portion.