Toto Ltd.

Tomohiro Hirakawa

Shu Kashirajima

Masaki Kitamura

Yuki Shinohara

Toshifumi Yoneda

Koji Kamei

Yuki Shimokawa

Kyoji Asada

Tomoaki Morita

A flush toilet includes: a bowl portion having a waste-receiving surface, a rim and a recess; a rim spout portion configured to spout flush water to form a swirl flow which swirlingly flows along the inner peripheral surface; a drainage conduit having an inlet connecting with the recess to discharge waste therethrough, wherein the waste-receiving surface of the bowl portion is composed of a left waste-receiving sub-surface and a right waste-receiving sub-surface defined, respectively, on both sided of a center line with respect to a lateral direction of the bowl portion, the left waste-receiving sub-surface and the right waste-receiving sub-surface are formed, respectively, in different shapes in a front region of the bowl portion so as to allow flush water spouted from the rim spout portion to form a major stream which flows from a front end of the bowl portion into the recess.

Flush toilet

A flush toilet which including a bowl portion having a waste-receiving surface, a rim and a recess; a water spouting portion for spouting the flush water forwardly; and a drainage conduit. The recess of the bowl portion has a bottom below a pooled water level, and a wall surface connecting between the bottom and a lower edge of the waste-receiving surface, wherein the bottom of the recess has a front bottom surface and a rear bottom surface. The bowl portion is configured to allow flush water to form a major stream which is directed to flow from an front end of the bowl portion toward the inlet of the drainage conduit, and the rear bottom surface of the bottom is configured to allow a part of the major stream to collide therewith, and then guide the collided major stream to a front region inside the drainage conduit.

A flush toilet which includes: a bowl portion having a waste-receiving surface, a rim and a recess; a first rim spout portion which spouts flush water toward a front end of the bowl portion so as to form a swirl flow; and a second rim spout portion which spouts flush water so as to form a swirl flow having a same flow direction as that of the swirl flow formable by the first rim spout portion. The bowl portion is configured to allow flush water spouted from the first rim spout portion to form a major stream which flows from the front end of the bowl portion into the recess, and allow flush water spouted from the second rim spout portion to flow into the recess from a lateral side of the bowl portion and then merge with the major stream M.

A flush toilet bowl includes: a bowl portion including a pooling portion in communication with a drain conduit; a rim surface provided above the bowl portion; and a first slit opening configured to spout flush water supplied through a first conduit toward the bowl portion and to spout the supplied flush water in a generally tangential direction of the rim surface, thereby generating a swirling flow flowing forward near a boundary between the rim surface and the bowl portion. A slit opening shape in a cross section generally perpendicular to a flow direction of water flow spouted from the first slit opening is horizontally flattened. There is provided a flush toilet bowl capable of minimizing the overhang of the rim portion.

Flush toilet bowl

Providing a flush toilet wherein the amount of water supplied to the jet hole and the amount of water supplied to the rim section are independently controlled. The present invention is a flush toilet () for supplying flushwater from a flushwater tank, the flush toilet comprising a bowl section () at the bottom portion of which is formed a jet hole; a jet flushwater tank () for storing flushwater to be supplied from the jet hole; a jet drain valve () disposed on the jet flushwater tank; a jet water conduit () for conducting flushwater which has passed through the jet drain valve to the jet hole; a rim section () disposed on the upper portion of the bowl section; a rim flushwater tank () for storing flushwater supplied to the rim section; a rim drain valve () disposed on the rim flushwater tank; and a rim water conduit () for conducting flushwater passed through the rim drain valve to the rim section.

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Kitakyushu, Japan

Tomohiro Hirakawa