Patents by Inventor Shu Kashirajima

Shu Kashirajima has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20210095452
    Abstract: A flush toilet includes a toilet main body and a tank device, where the tank device includes a water supply part, a storage tank, a small tank, a pump, a float switch, and a controller, a collision part against which flush water that is supplied from the water supply part to the storage tank via the small tank collides is provided in the storage tank, and the collision part is formed to cause the flush water to fall onto a water surface on the float switch side in the storage tank after collision.
    Type: Application
    Filed: September 18, 2020
    Publication date: April 1, 2021
    Inventors: Masaaki MOMOE, Shu KASHIRAJIMA
  • Publication number: 20210095450
    Abstract: A flush toilet includes a toilet main body, a tank device provided behind the toilet main body, and a private part washing device configured to wash a private part of a user, the private part washing device being provided on a rear upper surface of the toilet main body behind the bowl. The tank device includes a water supply part configured to supply flush water supplied from a water supply source, a storage tank for storing the flush water supplied from the water supply part, the storage tank being located behind the private part washing device and above a floor surface, a pump configured to feed the flush water in the storage tank to the toilet main body, and a controller configured to control operation of the water supply part and the pump, and the controller is disposed on an outer upper surface of the storage tank.
    Type: Application
    Filed: September 18, 2020
    Publication date: April 1, 2021
    Inventors: Yukari KAWAZU, Toshiro UMENO, Shu KASHIRAJIMA
  • Publication number: 20210095449
    Abstract: A flush toilet includes a toilet main body and a tank device, and the tank device includes a storage tank and a tank mounting member to which the storage tank is detachably attached. At a time of attachment of the storage tank to the tank mounting member, an attaching portion of the storage tank is engaged with an attachment-receiving portion of the tank mounting member by the storage tank being lowered onto a base of the tank mounting member from above. Then, when the storage tank is moved in a horizontal direction relative to the tank mounting member, the attaching portion of the storage tank is configured to be fixed to the attachment-receiving portion of the tank mounting member.
    Type: Application
    Filed: September 18, 2020
    Publication date: April 1, 2021
    Inventors: Hideo IWAKI, Shu KASHIRAJIMA, Yukari KAWAZU, Takahiro HARA
  • Publication number: 20200378102
    Abstract: The water conduit has: a first water-guiding portion extending from a water supply portion, where the flush water is supplied to the water conduit, to a first spout port located on one of right and left sides of the bowl portion; and a second water-guiding portion extending from the water supply portion to a second spout port located on the other side. The water supply portion is located at a position on the one side. The flush water is supplied to the water supply portion in a direction from the water supply portion toward the first water-guiding portion. A collision wall is provided on a way of the first water-guiding portion such that at least a part of the supplied flush water collides with the collision wall. The at least part of the flush water having collided with the collision wall is supplied to the second water-guiding portion.
    Type: Application
    Filed: March 18, 2020
    Publication date: December 3, 2020
    Inventors: Masaaki MOMOE, Shu KASHIRAJIMA, Satoshi TAKANO, Masaki MORI
  • Publication number: 20200308816
    Abstract: A flush toilet includes a toilet main body, a flush water tank device, and connection conduits for supplying, to a toilet main body, flush water supplied from a reservoir tank. The reservoir tank includes a large tank portion on a large volume side in the reservoir tank when the reservoir tank is divided into two at the left-right center and a small tank portion on a small volume side in the reservoir tank when the reservoir tank is divided into two at the left-right center. The upstream end of one connection conduit is connected to the large tank portion and, on the other hand, the downstream end of the other connection conduit is connected to the other side of the toilet main body divided into two at the left-right center.
    Type: Application
    Filed: March 19, 2020
    Publication date: October 1, 2020
    Applicant: TOTO LTD.
    Inventors: Shu KASHIRAJIMA, Takahiro HARA, Masaki MORI, Yukari KAWAZU, Tsubasa ISHIBASHI, Hironori YAMASAKI
  • Patent number: 10774511
    Abstract: A flush toilet is provided, which can enhance discharge performance of waste from an inside of a water discharge trap conduit even with a smaller amount of flushing water, in the flush toilet discharging waste by a siphon action. A flush toilet of the present invention has a bowl section, a water discharge trap conduit, and a jet spout port connected to a lower portion of the bowl section and opened toward the water discharge trap conduit, with an outlet portion bottom surface of an outlet portion thereof and a bottom surface of the bowl section being connected, and a bottom surface of the bowl section forms a curved surface that diagonally inclines more downward than the outlet portion bottom surface from a tip end of an outlet portion bottom surface of the jet spout port.
    Type: Grant
    Filed: June 19, 2017
    Date of Patent: September 15, 2020
    Assignee: TOTO LTD.
    Inventors: Shu Kashirajima, Yuuki Shinohara
  • Patent number: 10753076
    Abstract: Problem: To provide a flush toilet wherein anomalous sounds can be suppressed from occurring when flush water is spouted from the rim spout port together with air accumulated in the upper portion within the rim conduit, and quietness can be improved. Solution: The flush toilet of the present invention includes: a bowl portion 20 having a bowl-shaped waste receiving surface 14 and a rim portion 18 formed on a top edge of a waste receiving surface; a rim spout port 26 configured to spout flush water from the rim portion onto the bowl portion; a rim conduit 24 disposed in the rim portion extending from a rear side region of the bowl portion to the rim spout port; and a stirring portion 44 configured to agitate flush water which is supplied into the rim conduit 24.
    Type: Grant
    Filed: August 24, 2018
    Date of Patent: August 25, 2020
    Assignee: TOTO LTD.
    Inventors: Shu Kashirajima, Makoto Bekki, Hironori Yamasaki
  • Patent number: 10738452
    Abstract: Disclosed is a flush toilet including: a bowl portion having a waste-receiving surface and a rim; a drain passage; a rim spout section provided in the rim; and a water-conducting passage configured to supply the flush water to the rim spout section. The bowl portion has a front region and a rear region, and the rim spout section includes: a rim water passage formed inside the rim; and the rim spout port formed at a downstream end of the rim water passage. The rim water passage is provided to extend from either one of right and left parts of the rim to the remaining one of the right and left parts of the rim, via a front end of the rim. Further, the rim water passage has, in the front region of the bowl portion, a cross-sectional area constant zone.
    Type: Grant
    Filed: December 22, 2017
    Date of Patent: August 11, 2020
    Assignee: TOTO LTD.
    Inventors: Shu Kashirajima, Masaaki Momoe, Yuuki Shinohara
  • Patent number: 10704243
    Abstract: Disclosed is a flush toilet which comprises: a bowl portion having a waste-receiving surface and a rim provided along an upper edge of the waste-receiving surface; a drain trap conduit connected to the bowl portion to drain waste therethrough; a rim spout section including a rim spout port provided in a part of the rim located in a front region of the bowl portion for spouting the flush water, and a rim water-conducting passage provided to conduct flush water to the rim spout port; and a first water-conducting hose for supplying the flush water to the rim water-conducting passage located in the front region of the bowl portion, via beneath the waste-receiving surface, wherein the first water-conducting hose is configured to enable flush water to remain thereinside during stop of supply of the flush water.
    Type: Grant
    Filed: March 7, 2018
    Date of Patent: July 7, 2020
    Assignee: TOTO LTD.
    Inventors: Shu Kashirajima, Makoto Bekki, Hironori Yamasaki
  • Patent number: 10676908
    Abstract: A flush toilet comprises a bowl including a shelf formed on the top edge of a bowl-shaped waste receiving surface, and a rim forming an inner wall surface rising from the outside edge of this bowl; and a rim spout portion for spouting flush water to the inside of the bowl. The rim spout portion is disposed on the bowl rim and forms a single rim spout port over the entire perimeter of the rim for spouting flush water, and the rim spout port is disposed on either the left or right of the front side region, and spouts flush water rearward. The region to the side of the rim spout port in the inner wall surface forms a continuous band over the entire bowl perimeter.
    Type: Grant
    Filed: November 9, 2017
    Date of Patent: June 9, 2020
    Assignee: TOTO LTD.
    Inventors: Shu Kashirajima, Masaaki Momoe, Yuuki Shinohara
  • Patent number: 10662634
    Abstract: The bowl portion of the flush toilet includes a bowl-shaped waste receiving surface and a rim portion formed on a top edge of the bowl portion. The rim portion includes a rim inside wall portion located on an inner side of the top edge of the bowl portion. The rim inside wall portion has a rim inside surface located at a lower area of the rim inside wall portion and a rim inside wall upper sloped surface having a section in a vertical plane, the shape of the section being sloped from an upper edge of the rim inside surface to an upper edge of the rim inside wall portion. The ratio between the height of the rim inside surface and the height of the rim inside wall upper sloped surface is 1:1 to 6:1 in a section in a vertical plane at any area other than a rear area.
    Type: Grant
    Filed: February 8, 2017
    Date of Patent: May 26, 2020
    Assignee: TOTO LTD.
    Inventors: Shu Kashirajima, Masaki Kitamura, Satoshi Yamakawa, Kazuyoshi Mizoguchi
  • Patent number: 10633849
    Abstract: A flush toilet includes a shelf formed on the top edge of a bowl-shaped waste receiving surface, and a rim forming an inner wall surface rising from the outer edge of the shelf. The bowl includes a front side region and a rear side region, respectively, formed on the front side and the rear side of a center axis extending horizontally in the left-right direction so as to divide the bowl equally in the front-rear direction. The inner wall surface includes an overhang portion protruding toward inside of the bowl obliquely from the bottom end of the overhang portion. The ratio between the overhang amount and the width of the shelf is set smaller than 1.0.
    Type: Grant
    Filed: November 9, 2017
    Date of Patent: April 28, 2020
    Assignee: TOTO LTD.
    Inventors: Shu Kashirajima, Masaaki Momoe, Yuuki Shinohara
  • Patent number: 10619337
    Abstract: The bowl portion of the flush toilet includes a bowl-shaped waste receiving surface and a rim portion formed on a top edge of the bowl portion. The rim portion includes a rim inside wall portion located on an inner side of the top edge of the bowl portion. The rim inside wall portion has a rim inside surface located at a lower area of the rim inside wall portion and a rim inside wall upper sloped surface having a section in a vertical plane, the shape of the section being sloped from an upper edge of the rim inside surface to an upper edge of the rim inside wall portion. The ratio between the height of the rim inside surface and the height of the rim inside wall upper sloped surface is 1:1 to 6:1 in a section in a vertical plane at any area other than a rear area.
    Type: Grant
    Filed: February 8, 2017
    Date of Patent: April 14, 2020
    Assignee: TOTO LTD.
    Inventors: Shu Kashirajima, Masaki Kitamura, Satoshi Yamakawa, Kazuyoshi Mizoguchi
  • Patent number: 10604921
    Abstract: A flush toilet is provided, which can advance timing for startup of a siphon action that discharges waste, and can efficiently discharge waste from a water discharge trap conduit. A flush toilet of the present invention has a bowl section, a water discharge trap conduit connected to a lower portion of the bowl section, and a jet spout port that is opened toward the water discharge trap conduit, in the lower portion of the bowl section, and the jet spout port includes an outlet flow path in which a bottom surface extending toward an outlet of the jet spout port and toward a bowl section bottom surface in the lower portion of the bowl section, and a ceiling surface extending toward the outlet and having an inclination toward an upper direction than an inclination of the bottom surface are formed.
    Type: Grant
    Filed: June 19, 2017
    Date of Patent: March 31, 2020
    Assignee: TOTO LTD.
    Inventors: Shu Kashirajima, Yuuki Shinohara
  • Publication number: 20200063418
    Abstract: A flush toilet includes: a toilet main unit having a bowl portion, and a water conduit formed in the toilet main unit and configured to supply flush water into the bowl portion. The water conduit has: a first water-guiding portion extending from a water supply portion to a first spout port located on one of right and left sides of the bowl portion; and a second water-guiding portion extending from the water supply portion to a second spout port located on the other of the right and left sides of the bowl portion. The water supply portion is located at a right-sided or left-sided position in a right and left direction. The flush water is supplied to the water supply portion in a direction inclined with respect to a front and back direction and intersected with an inside surface of the water supply portion, as seen in plan view.
    Type: Application
    Filed: July 31, 2019
    Publication date: February 27, 2020
    Applicant: TOTO LTD.
    Inventors: Masaki MORI, Shu KASHIRAJIMA, Takahiro HARA
  • Patent number: 10487489
    Abstract: A flush toilet bowl includes a bowl part, a rim nozzle, and a rim water spout part. The bowl part has a rim part on an upper edge of a receiving surface with a bowl shape. The rim nozzle is provided on a rear part of the bowl part and spouts flush water. The rim water spout part is provided on the rim part and spouts flush water that is spouted from the rim nozzle toward the receiving surface. The rim water spout part includes a rim water guide channel that is formed inside the rim part in such a manner that a cross-sectional area of a lower half part of the rim water guide channel is less than a cross-sectional area of an upper half part and a rim water spout port that is formed to be continuous with the rim water guide channel and in a front side region of the bowl part.
    Type: Grant
    Filed: December 4, 2017
    Date of Patent: November 26, 2019
    Assignee: TOTO LTD.
    Inventors: Shu Kashirajima, Masaaki Momoe, Yuuki Shinohara
  • Patent number: 10465369
    Abstract: A flush toilet includes a bowl including a rim formed on the top edge of a bowl-shaped waste receiving surface; and a rim spout portion disposed on the rim for forming a circulating flow by spouting flush water into the bowl. The bowl further includes a shelf between the top edge of the waste receiving surface and the bottom end of the rim, and a connecting surface for connecting the outside edge of this shelf and the bottom end of the rim with a curved surface. The connecting surface is arranged so that the curvature radius of its curved surface in the vertical direction is essentially constant from the bowl front portion across both the left and right sides, and so that its position rises toward the left and right sides from the front portion of the bowl.
    Type: Grant
    Filed: September 21, 2017
    Date of Patent: November 5, 2019
    Assignee: TOTO LTD.
    Inventors: Shu Kashirajima, Masaaki Momoe, Yuuki Shinohara
  • Patent number: 10443223
    Abstract: A flush toilet includes a body including a body inner wall forming the majority of the bowl surface of a bowl and a connecting portion connecting this outside wall and body inner wall; a rim including a rim inner wall forming a portion of the bowl surface, joined to the top end of the body; and a rim spout portion spouting flush water into the bowl. This rim spout portion respectively forms a rim conduit formed by joining a body and a rim, and a rim spout port; the joining surface between the body inner wall forming the rim conduit and the rim inner wall is set to a lower position from the rear side of the bowl toward the front; and the bottom surface of the rim conduit is set to a lower position from the upstream end toward the downstream end of the rim conduit.
    Type: Grant
    Filed: November 9, 2017
    Date of Patent: October 15, 2019
    Assignee: TOTO LTD.
    Inventors: Shu Kashirajima, Masaaki Momoe, Yuuki Shinohara
  • Patent number: 10407890
    Abstract: A flush toilet bowl includes a bowl part, a rim nozzle, and a rim water spout part. The bowl part has a rim part on an upper edge of a receiving surface with a bowl shape. The rim nozzle is provided on a rear part of the bowl part and spouts flush water. The rim water spout part is provided on the rim part and spouts flush water that is spouted from the rim nozzle toward the receiving surface. The rim water spout part includes a rim water guide channel that is formed inside the rim part and guides flush water that is spouted from the rim nozzle and a rim water spout port that is formed to be continuous with the rim water guide channel and in a front side region of the bowl part. The rim nozzle spouts flush water upward in the rim water guide channel.
    Type: Grant
    Filed: December 4, 2017
    Date of Patent: September 10, 2019
    Assignee: TOTO LTD.
    Inventors: Shu Kashirajima, Yukihiro Sawayama
  • Patent number: 10370839
    Abstract: A flush toilet includes: a bowl including a rim formed on the top edge of a bowl-shaped waste receiving surface, a discharge path connected to the bottom of this bowl for discharging waste, and a rim spout portion disposed on this rim for spouting flush water within the bowl to form a circulating flow. The bowl further includes a shelf, formed in the circumferential direction from the rim spout portion between the waste receiving surface top edge and the rim bottom end, for guiding flush water spouted from the rim spout portion in the circumferential direction. The rim spout portion is disposed on either the left or right of either the side region or the front region of the bowl, and forms a rim spout port to spout flush water rearward. The width of the shelf is set to decrease from the side to the rear of the bowl.
    Type: Grant
    Filed: September 21, 2017
    Date of Patent: August 6, 2019
    Assignee: TOTO LTD.
    Inventors: Shu Kashirajima, Masaaki Momoe, Yuuki Shinohara, Eiji Shiohara, Naoto Matsuo