Bowl Patents (Class 4/420)
  • Patent number: 11828051
    Abstract: A flush toilet is capable of suppressing water from splashing from a bowl at a time when water is discharged rearward inside the bowl from one rim spout port portion formed in a rim portion. A rim spout portion of the flush toilet forms a rim water passage where flush water that is supplied flows through, and forms, on a downstream end of the rim water passage, a rim spout port portion that discharges the flush water rearward. The rim spout port portion, which is one in number, is formed in the rim portion, and the rim spout port portion in the linear portion is formed to discharge water rearward in the bowl in a direction extending the linear portion.
    Type: Grant
    Filed: February 24, 2022
    Date of Patent: November 28, 2023
    Assignee: TOTO LTD.
    Inventor: Wataru Ishimi
  • Patent number: 11795677
    Abstract: A flush toilet includes a bowl part that receives waste, a drainage water trap that is connected to a bottom of the bowl part, a jet water spout port that spouts washing water toward the drainage water trap, and a discharge port that is connected to the drainage water trap and discharges waste, wherein the drainage water trap includes a rising pipe line that is connected to the bowl part, a curved pipe line that includes a rising curved part that is connected to the rising pipe line and rises backward and a falling curved part that falls backward, a falling pipe line that is connected to the curved pipe line, and a swelled part that forms a space that is swelled toward a back side thereof and is continuous with the discharge port, on a downstream side of a curved top part of the curved pipe line.
    Type: Grant
    Filed: August 20, 2021
    Date of Patent: October 24, 2023
    Assignee: TOTO LTD.
    Inventors: Tomoaki Morita, Takehiro Minami, Keita Yoshisaka
  • Patent number: 11788268
    Abstract: A flush toilet which is capable of suppressing reduction in the force of water and disturbance in the flow curved by a pressure loss caused by a flow curved separating from a surface on an inner side portion side of an intermediate part. A rim water passage of the flush toilet includes a curved portion that is curved inward from a downstream end of an outer side portion. The curved portion includes a top portion that is at a position farthest from the intermediate part in the top view, in a direction extending the intermediate part. The top portion is formed in more the outer side portion side than a virtual center line that extends along a center of the intermediate part.
    Type: Grant
    Filed: February 24, 2022
    Date of Patent: October 17, 2023
    Assignee: TOTO LTD.
    Inventors: Wataru Ishimi, Seiya Nakashima
  • Patent number: 11753809
    Abstract: A flush toilet according to an embodiment includes a bowl part, a rim part, a water spout port, a bottom surface wall, and an extension part. The bowl part receives waste. The rim part is formed on a top of the bowl part. The water spout port spouts a washing water along the rim part. The bottom surface wall is formed in such a manner that a height thereof increases from a side of the water spout port toward a front end of the rim part, and forms a passing water channel where the washing water flows. The extension part extends a water spout region for the washing water that is spouted from the water spout port.
    Type: Grant
    Filed: September 10, 2020
    Date of Patent: September 12, 2023
    Assignee: TOTO LTD.
    Inventors: Jing Chen, Kenichi Nakamura
  • Patent number: 11643799
    Abstract: A flush toilet of the present invention includes: a bowl including a waste receiving surface, a rim and a shelf surface, the shelf surface of the bowl including linear portions formed on a right side and a left side, a front arc portion connected to front ends of the linear portions, and a rear arc portion connected to rear ends of the linear portions; a rim spout portion spouting flush water to the shelf surface to form a circulating flow; and the like. Flush water is spouted backward from the rim spout port along the linear portions of the shelf surface; and the shelf surface and the waste receiving surface are coupled by an inner coupling portion, and a curvature radius of the inner coupling portion along a vertical direction is set to a smaller value on a rear end of the bowl than on a front end thereof.
    Type: Grant
    Filed: February 23, 2022
    Date of Patent: May 9, 2023
    Assignee: TOTO LTD.
    Inventor: Wataru Ishimi
  • Patent number: 11591782
    Abstract: A toilet configuration that is connectable to a sewer drainage pipe is provided. The toilet configuration includes a water storage tank, a ceramic toilet body including a toilet bowl, and a water supply plenum operable to receive water from the water storage tank and channel the water to the toilet bowl. The toilet configuration further includes a primary drain operable to fluidly connect the waste receiving basin and the sewer drainage pipe and at least one footrest formed unitarily with an outer surface of the ceramic toilet body. The footrest is operable to aid a user in elevating at least one knee while the user is seated upon the toilet configuration.
    Type: Grant
    Filed: August 24, 2021
    Date of Patent: February 28, 2023
    Assignee: Penguin Products, LLC
    Inventors: Patrick Gerard Stack, Lawrence A Trowbridge, Joan Marie Stoneburner, Mauricio Hector Zambrano
  • Patent number: 11591781
    Abstract: A flush toilet includes a toilet main body made of ceramics and a control unit. The toilet main body includes a skirt, and a rear storage that can store at least a part of the control unit, the rear storage includes a supporting wall that divides a storage region into upper and lower regions and that supports the control unit, the skirt forms a double wall including an outer wall and an inner wall, the double wall has at least a part that forms an internal space between the outer wall and the inner wall, and the skirt includes a single wall in which the internal space of the double wall is removed in an upper end above a joining portion between the double wall and the supporting wall.
    Type: Grant
    Filed: February 24, 2022
    Date of Patent: February 28, 2023
    Assignee: Toto Ltd.
    Inventors: Takahiro Maruyama, Wataru Ishimi, Seiya Nakashima
  • Patent number: 11555304
    Abstract: A flush toilet according to an embodiment includes a bowl part and a water storage part. The bowl part receives waste. The water storage part is formed on a bottom of the bowl part and is connected to a discharge channel. A first region that is connected to a discharge channel and a second region that is located on a front side of the first region are formed in the water storage part. A curvature of a curved surface of the water storage part that forms the first region in upward and downward directions is different.
    Type: Grant
    Filed: September 10, 2020
    Date of Patent: January 17, 2023
    Assignee: TOTO LTD.
    Inventors: Takumi Tsuchitani, Kenichi Nakamura, Yoshikazu Nakano
  • Patent number: 11486124
    Abstract: An analytical toilet is disclosed. The toilet is equipped to use energized flush water to clean excreta and other waste from the toilet. The toilet includes a bowl for receiving excreta from a user; at least one analytical device by which a sample of excreta is analyzed; a supply of flush water to be used to remove waste from a surface the of the toilet; an energizer to add energy to at least a portion of the to create energized flush water prior to its use in removing waste; and an orifice for directing a first jet of the energized flush water at the waste on the surface of the toilet. The disclosure also includes features to detect the location of waste in the toilet and selectively activate the energized flush water in order to clean the detected waste.
    Type: Grant
    Filed: June 16, 2020
    Date of Patent: November 1, 2022
    Assignee: Hall Labs LLC
    Inventors: David R. Hall, David Crismon, Joshua Larsen, Jared Reynolds
  • Patent number: 11466440
    Abstract: According to the embodiment, a toilet device includes a detector and a controller. The detector is detecting whether or not flush water is at a position lower than a full level and higher than a seal level at a surface of a bowl of a flush toilet. The controller is determining a clog state of the flush toilet based on a detection result of the detector after a flush water supplier is closed. The flush water supplier is located in a flow channel discharging flush water into the bowl. The position of the detection region of the detector at the surface of the bowl is separated from flush water flowing in a vertical direction from a water discharge port of the flow channel toward a bottom portion of the bowl after the flush water supplier is closed.
    Type: Grant
    Filed: June 1, 2020
    Date of Patent: October 11, 2022
    Assignee: TOTO LTD.
    Inventors: Motoki Kobayashi, Shoichi Tsuiki, Yuya Masahira, Hirofumi Nagatomi, Yasuo Nambu
  • Patent number: 11421412
    Abstract: A sanitary facility formed as a toilet, including a body with an upwardly open bowl, a water chamber provided in the region of the upper rim of the bowl, to project horizontally into the bowl. Wherein at least one flushing opening on the chamber side directed downwardly into the bowl. At least one connection portion is provided in the rear region of the body for connecting a flushing-water feed line for feeding flushing water into the water chamber, from which the water flows into the bowl via the chamber-side flushing opening. The water chamber extends only in a rear rim region. A second and a third flushing opening are each able to be supplied with flushing water and allow the flushing water to be introduced tangentially into the bowl. The third flushing opening is positioned closer to the front side of the body than the second flushing opening.
    Type: Grant
    Filed: March 3, 2020
    Date of Patent: August 23, 2022
    Assignee: DURAVIT AKTIENGESELLSCHAFT
    Inventors: Juan Angel de la Corte Mateo, Franziska Sophie W├╝lker
  • Patent number: 11396744
    Abstract: A flush toilet includes: a bowl; at least one water discharge port to discharge water into the bowl; a water supply path to supply the water from a water supply source to the water discharge port therethrough; and a backflow check structure provided for the water supply path. The backflow check structure checks a backflow of the water running through the water supply path. The backflow check structure has: a water inlet port exposed to the air and directly communicating with the water discharge port; and a water outlet port to channel the water supplied from the water supply source toward the water inlet port. The water inlet port is arranged on a trajectory of the water running out through the water outlet port. The water that has passed through the water inlet port is channeled directly toward the water discharge port.
    Type: Grant
    Filed: October 24, 2018
    Date of Patent: July 26, 2022
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Yasushi Sato, Masato Miyamoto
  • Patent number: 11384521
    Abstract: A flush toilet according to an embodiment includes a bowl part, a rim part, a water spout port, and a water storage part. The bowl part receives waste. The rim part is formed on a top of the bowl part. The water spout port spouts a washing water. The water storage part is formed on a bottom of the bowl part. A first region that is connected to a discharge channel and a second region that is located on a front side of the first region are formed in the water storage part. A main stream of the washing water that is spouted from the water spout port along the rim part swirls on the bowl part and flows into the first region.
    Type: Grant
    Filed: September 9, 2020
    Date of Patent: July 12, 2022
    Assignee: TOTO LTD.
    Inventors: Kenichi Nakamura, Hiroshi Hashimoto, Jing Chen
  • Patent number: 11326333
    Abstract: A flush toilet according to an embodiment includes a bowl part, a rim part, a water spout port, and a water storage part. The bowl part receives waste. The rim part is formed on a top of the bowl part. The water spout port spouts a washing water from one side of the bowl part in leftward and rightward directions. The water storage part is formed on a bottom of the bowl part. The bowl part includes a guide part that causes the washing water to swirl from the one side to another side that is opposite to the one side and causes the washing water that swirls to the another side to flow into a back side of the water storage part.
    Type: Grant
    Filed: September 10, 2020
    Date of Patent: May 10, 2022
    Assignee: TOTO LTD.
    Inventors: Jing Chen, Kenichi Nakamura, Hiroshi Hashimoto
  • Patent number: 11280078
    Abstract: A hot water system for a bidet having a housing is provided. The hot water system includes: a water inlet pipe connected to a faucet; a flow path guide tank located at a lower portion in the housing so that water introduced into the water inlet pipe flows; a sheath heater provided in the housing and configured to heat water discharged from the flow path guide tank; and a water outlet pipe configured to supply water heated by the sheath heater to the outside. The flow path guide tank has a flow path guide hole formed through in an upward direction so that water introduced into the water inlet pipe flows into an upper portion inside the housing and exchanges heat with the sheath heater.
    Type: Grant
    Filed: March 6, 2019
    Date of Patent: March 22, 2022
    Assignee: COWAY CO., LTD.
    Inventors: Sung Hee Lee, Hee Joo Kang, Dong Ik Nam, Hyun Min Shin, Man Uk Park
  • Patent number: 11274428
    Abstract: A flush toilet according to an embodiment includes a bowl part, a rim part, and a water spout port. The bowl part receives waste. The rim part is formed on a top of the bowl part. The water spout port spouts a washing water along the rim part. A height of a bottom surface wall that forms a passing water channel where the washing water flows along the rim part increases from an end part on a side of the water spout port toward a front end of the bowl part.
    Type: Grant
    Filed: September 10, 2020
    Date of Patent: March 15, 2022
    Assignee: TOTO LTD.
    Inventors: Shinichi Urata, Jing Chen, Kenichi Nakamura
  • Patent number: 11236498
    Abstract: A flush toilet according to an embodiment includes a bowl part, a rim part, and a water spout port. The bowl part receives waste. The rim part is formed on a top of the bowl part. The water spout port spouts a washing water along the rim part. A height of a bottom surface wall that forms a passing water channel where the washing water flows along the rim part increases from an end part on a side of the water spout port toward a front end of the bowl part.
    Type: Grant
    Filed: September 10, 2020
    Date of Patent: February 1, 2022
    Assignee: TOTO LTD.
    Inventors: Shinichi Urata, Jing Chen, Kenichi Nakamura
  • Patent number: 11124955
    Abstract: A flush toilet includes a first rim spout port provided in a rim on one side in a left-right direction of a bowl and a second rim spout port provided in the rim on the other side in the left-right direction of the bowl. The first rim spout port is disposed further in the front than the front end of a well portion. The second rim spout port causes the second rim spout to traverse a swirling direction of a swirling flow of the first rim spout and guide the flush water interfering with the swirling flow of the first rim spout to a rear region of the bowl further on the rear side than the well portion.
    Type: Grant
    Filed: September 23, 2019
    Date of Patent: September 21, 2021
    Assignee: TOTO LTD.
    Inventors: Eiji Shiohara, Satoshi Takano, Hideyuki Nakatsu, Yuki Kubota
  • Patent number: 11124956
    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: Grant
    Filed: March 18, 2020
    Date of Patent: September 21, 2021
    Assignee: TOTO LTD.
    Inventors: Masaaki Momoe, Shu Kashirajima, Satoshi Takano, Masaki Mori
  • Patent number: 11119091
    Abstract: A method of automatically tracing urine in a toilet that includes S1: acquiring an image of an interior of a toilet bowl (comprising an image of urine or an image simultaneously showing the urine and a collecting and tracing member of the toilet) through an image sensor; S2: identifying the urine or simultaneously identifying the urine and the collecting and tracing member through processing the image; and S3: implementing tracing movement to the urine by the collecting and tracing member. The method may, optionally, include S4: repeating S1, S2 and S3 until the collecting and tracing member coincides with the urine in the image.
    Type: Grant
    Filed: March 12, 2019
    Date of Patent: September 14, 2021
    Assignee: SHANGHAI KOHLER ELECTRONICS, LTD.
    Inventor: Qintao Sun
  • Patent number: 11078657
    Abstract: A toilet includes a base configured to engage a floor in a bathroom, the base defining a rear wall. The toilet further includes a plurality of openings defined in the rear wall configured to couple the rear wall to at least one of a wall in a bathroom or a wall carrier. The toilet further includes a cavity formed in the rear wall and a bowl defining a sump. The toilet further includes a discharge pipe defining a discharge pipe inlet disposed at the sump and a discharge pipe outlet disposed in the cavity. The toilet further includes a lower trapway having an upper section configured to receive the discharge pipe outlet therein and a lower trapway outlet configured to be fluidly coupled to a wall carrier.
    Type: Grant
    Filed: December 20, 2017
    Date of Patent: August 3, 2021
    Assignee: Kohler Co.
    Inventor: Keith Muellenbach
  • Patent number: 10982421
    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: Grant
    Filed: July 31, 2019
    Date of Patent: April 20, 2021
    Assignee: TOTO LTD.
    Inventors: Masaki Mori, Shu Kashirajima, Takahiro Hara
  • 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: 10724222
    Abstract: A water passage in a front region of a bowl of a toilet includes an upstream side water passage and a downstream side water passage formed on the upstream side and on the downstream side, respectively, of a front end of the bowl surface. The curvature radius of the downstream side water passage in a plan view is set to be smaller than the curvature radius of the upstream side water passage in a plan view. The water passage in the front region of the bowl has a flow path vertical cross-section that is taken in the vertical direction and is formed between a shelf surface and an overhanging part. The cross-sectional area of the flow path vertical cross-section taken in the vertical direction is set to be the smallest in a front end of the water passage.
    Type: Grant
    Filed: March 21, 2019
    Date of Patent: July 28, 2020
    Assignee: TOTO LTD.
    Inventors: Eiji Shiohara, Satoshi Takano, Hideyuki Nakatsu, Yuki Kubota
  • 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: 10648164
    Abstract: A flush toilet comprises a bowl portion including a rim portion and a shelf portion; a water discharge path for discharging waste; a water spouting portion for spouting flush water onto the shelf portion of the bowl portion to form a swirl flow; and a water conduit for supplying the flush water to the water spouting portion; wherein the bowl portion includes a front region and a rear region, and the rim portion of the bowl portion is such that a curvature radius in the front region is equal to or smaller than a curvature radius of the rear region, and wherein the water spouting portion is formed on either a left or right side in the front region and spouts the flush water toward a front of the rim portion.
    Type: Grant
    Filed: August 17, 2012
    Date of Patent: May 12, 2020
    Assignee: TOTO LTD.
    Inventors: Yu Yamasaki, Kenji Watanabe, Masaaki Inoue, Masahiro Nakamura
  • 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: 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: 10472814
    Abstract: Methods and systems for equipping a toilet with hygiene and safety features by controlling and reducing potential escape of liquid waste from the toilet.
    Type: Grant
    Filed: October 27, 2017
    Date of Patent: November 12, 2019
    Assignee: MAG Aerospace Industries, LLC
    Inventors: David Kim, Oscar Mathews, David Beach, Razmik Boodaghians, Christopher Choi, Christoph Goeschel, Joerg Stachowski
  • 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: 10428507
    Abstract: A flush toilet according to an embodiment includes a main water guide channel, a bending water guide channel, a rim water guide channel, and a retention part. The bending water guide channel bends a flow direction of washing water supplied from the main water guide channel. The rim water guide channel causes the washing water to flow toward and to be spouted from a water spout part. The retention part is formed in at least the bending water guide channel. An upper part of the retention part is formed into an opened concave shape and the retention part retains a part of the washing water. Furthermore, the retention part is formed in such a manner that an upper end thereof on a downstream side is horizontal to a bottom surface of the water spout part or higher than the bottom surface of the water spout part.
    Type: Grant
    Filed: January 4, 2018
    Date of Patent: October 1, 2019
    Assignee: TOTO LTD.
    Inventors: Hiroshi Hashimoto, Shinichi Urata, Shuichi Nagashima, Mayu Okubo, Shoko Imaizumi, Daisuke Yamamoto, Kenichi Nakamura, Takumi Tsuchitani
  • 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: 10378195
    Abstract: A flush toilet having a bowl portion including a waste receiving surface, a rim portion, a shelf portion, and a concave portion; a discharge passage for discharging waste; a first spout port for spouting flush water on a shelf portion of the bowl portion to form a circulating flow; a second spout port for spouting flush water in the same direction as the circulating direction of flush water spouted from a first spout port and toward the rear of the bowl portion; a first water conduit for supplying flush water to the first spout port; and a second water conduit for supplying flush water to the second spout port. The first and second water conduits are formed so that the flow rate of flush water spouted from the second spout port is greater than the flow rate of flush water spouted from the first spout port.
    Type: Grant
    Filed: January 27, 2016
    Date of Patent: August 13, 2019
    Assignee: Toto Ltd.
    Inventors: Shinichi Urata, Keisuke Okada
  • 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
  • Patent number: 10337183
    Abstract: There is provided a flush toilet that cleans a bowl using a swirl flow formed by cleaning water flowing down from a slit aperture formed on a rim. The flush toilet has a discharge passage an inlet of which is connected to a lower portion of a waste receiving having a bowl shape, and an inlet of an inlet conduit of the discharge passage is formed such that on a horizontal cross-section plane a maximum width of a front portion in a left-right direction is larger than a maximum width of a rear portion in the left-right direction.
    Type: Grant
    Filed: January 26, 2017
    Date of Patent: July 2, 2019
    Assignee: TOTO LTD.
    Inventors: Naoto Matsuo, Eiji Shiohara, Hiroyuki Hara
  • Patent number: 10301809
    Abstract: A flush toilet having a bowl portion including a bowl-shaped waste receiving surface and a rim portion wherein the rim portion includes a rim top inside corner portion, and a rim top outside corner portion, and in at least part of the entire perimeter of the rim portion, the rounding of the rim top inside corner portion is formed to be larger than the rounding of the rim top outside corner portion. This rim profile enables the rim portion top surface, the rim top inside corner portion, and the inside wall can be efficiently cleaned.
    Type: Grant
    Filed: September 28, 2015
    Date of Patent: May 28, 2019
    Assignee: TOTO LTD.
    Inventors: Masaki Kitamura, Satoshi Yamakawa, Kazuyoshi Mizoguchi, Shu Kashirajima
  • Patent number: 10287764
    Abstract: Problem: Provided is a flush toilet capable of increasing the volume of a waste conveyance flow, thereby improving a waste conveyance capability. Solution: The flush toilet includes: a toilet main unit (2) comprising a discharge conduit (16) communicated with the discharge trap pipe. The discharge conduit includes a flow dividing section (26) provided on a downstream side of an upstream discharge conduit section, and a delaying flow passage (28) branched from the flow dividing section. An inward region of the skirt portion includes: a central region (D) and a lateral region (E). The delaying flow passage (28) forms a passage in the lateral region (E) and merges leading flush water having flowed into the delaying flow passage from the flow dividing section (26) with a flush water flow reaching the flow dividing section at a timing after the inflow of the flush water to the delaying flow passage.
    Type: Grant
    Filed: September 8, 2017
    Date of Patent: May 14, 2019
    Assignee: TOTO LTD.
    Inventors: Takahiro Nakashima, Nobuhiro Hayashi, Hidekazu Kitaura, Haruka Saito, Isami Sakaba
  • Patent number: 10287767
    Abstract: Provided is a flush toilet capable of increasing the volume of a waste conveyance flow for washing down waste thereby improving a waste conveyance capability. The flush toilet includes: a discharge conduit (16) communicated with the discharge trap pipe. The discharge conduit includes: a flow dividing section (26) and a delaying flow passage (28) branched from the flow dividing section. The flow dividing section has a guide portion (32) configured to guide relatively low-speed flush water along the guide portion to the delaying flow passage. The delaying flow passage (28) is configured such that flush water having flowed into the delaying flow passage along the guide portion (32) is enabled to merge with a flush water flow reaching the flow dividing section at a timing after the inflow of the flush water to the delaying flow passage.
    Type: Grant
    Filed: September 8, 2017
    Date of Patent: May 14, 2019
    Assignee: TOTO LTD.
    Inventors: Nobuhiro Hayashi, Hidekazu Kitaura, Takahiro Nakashima, Haruka Saito, Isami Sakaba
  • Patent number: 10287766
    Abstract: A flush toilet is provided, which can restrain flushing water from excessively flowing down to an inner side of a bowl section before the flushing water reaches an upper end portion of a rising flow path, and can effectively restrain from occurring an unwashed region in the bowl section. A flush toilet of the present invention has a bowl section, and the bowl section forms a water conduit formed between the waste receiving surface and the rim section, and the water conduit includes a shelf portion forming an inclined surface lowering toward an outer side from an inner side of the bowl section, or a horizontal surface formed horizontally toward the outer side from the inner side of the bowl section, in at least a part of a rising flow path rising from a low portion of the water conduit.
    Type: Grant
    Filed: June 19, 2017
    Date of Patent: May 14, 2019
    Assignee: TOTO LTD.
    Inventors: Masaaki Momoe, Shu Kashirajima, Masaki Kitamura
  • Patent number: 10214289
    Abstract: Embodiments of the present invention provide a grey water flush system for use with vacuum toilets. One embodiment of the system provides a two-stage flush that uses a transient tank in between the toilet bowl and the main aircraft waste tank, which reduces the noise level associated with the flush process because a lesser vacuum is demanded for the first stage of the flush. Embodiments of the system further capture grey water from a sink basin in a reservoir and use that water in the toilet flush process. There is further provided a lavatory odor removal system option that is activated during the second stage of the flush.
    Type: Grant
    Filed: June 9, 2017
    Date of Patent: February 26, 2019
    Assignee: MAG Aerospace Industries, LLC
    Inventors: Razmik B. Boodaghians, Kevin Huang, Christoph Goeschel, Christina Ortolan, Volker Antonczyk, Timothy Birbeck
  • Patent number: 10174491
    Abstract: A toilet bowl unit includes a toilet bowl with an inner toilet bowl surface having an upper peripheral portion, a central peripheral portion and a lower sump portion. A peripheral slot separates a lower edge of the upper peripheral portion from an upper edge of the central peripheral portion. A peripheral water channel is concealed inside the toilet bowl unit and has a side wall which is a weir over which water may flow into the peripheral slot. The slot has a discharge opening which is substantially horizontal at the rear and sides of the inner toilet bowl surface (for discharging a curtain of water) and includes at least one serpentine portion at the front of the inner toilet bowl surface (for discharging a jet of water). The horizontal portion(s) of the discharge opening are positioned just below a seat platform surface in order to minimize the unwashed area at the top of the inner toilet bowl surface.
    Type: Grant
    Filed: July 20, 2015
    Date of Patent: January 8, 2019
    Assignee: IDEAL STANDARD (UK) LIMITED
    Inventors: John Mark Richard Pearson, Michael Ian Heaton
  • Patent number: 10167618
    Abstract: A flush toilet for cleaning a toilet main body and discharging waste by using flush water is disclosed. The flush toilet contains a bowl portion including a bowl shaped waste-receiving surface and a rim portion formed on a top edge of the waste-receiving surface, the rim portion having an inner circumferential surface whose top portion is configured to rises vertically. The bowl portion contains a front region, the front region includes a first arc-shaped surface having a curvature R1 in a horizontal direction of a top portion of the waste-receiving surface and a second arc-shaped surface having a curvature R2 in a vertical direction formed by the inner circumferential surface of the rim portion and the waste-receiving surface, and the ratio of the curvature R1 to the curvature R2 is in a range of 1:3 to 3:1.
    Type: Grant
    Filed: September 2, 2016
    Date of Patent: January 1, 2019
    Assignee: TOTO LTD.
    Inventors: Shu Kashirajima, Masaaki Momoe, Masaki Kitamura
  • Patent number: 10151094
    Abstract: A flush toilet includes a bowl having a waste-receiving surface and a rim; the bowl comprises a front region on the front side of a center line extending in the left-right direction and equally dividing the bowl in the front-rear direction, and a rear region on the rear side thereof; whereby on either the left or right side in the front area of the bowl, on the rim, a rim water passageway is formed for passing flush water supplied from a conduit, and a rim spout port is formed, and the rim water passageway comprises: an outside passageway extending from the inlet thereof through the rim interior toward the front; a bent passageway bending inward from the downstream end of this outside passageway; and an inside passageway extending from this bent passageway toward the rear, up to the rim spout port.
    Type: Grant
    Filed: March 6, 2017
    Date of Patent: December 11, 2018
    Assignee: TOTO LTD.
    Inventors: Shu Kashirajima, Yuki Shimokawa, Masaki Kitamura, Yuuki Shinohara, Masaaki Momoe
  • Patent number: 10145096
    Abstract: A flush toilet includes a bowl having a waste-receiving surface and a rim; on either the left or right side inside the front area of this bowl, a rim water passageway is formed and a rim spouting port is formed; the water passageway formed at the downstream side of this rim spouting port forms a flow path cross section with the inner circumferential surface of the rim, the shelf surface formed under this inner circumferential surface, and the overhang portion formed over the inner circumferential surface; the height dimension of the flow path cross section is set to increase with distance on the downstream side, and the width thereof is set to decrease with distance on the downstream side, so that from the rim spout port toward the downstream side, the cross sectional area of the flow path cross section is approximately constant.
    Type: Grant
    Filed: March 6, 2017
    Date of Patent: December 4, 2018
    Assignee: TOTO LTD.
    Inventors: Shu Kashirajima, Masaaki Momoe, Yuki Shimokawa
  • Patent number: 10072406
    Abstract: A quiet toilet apparatus disclosed. Microphones and circuitry are used to receive and detect one or more virtual point source locations and propagation directions of unwanted toilet noise. Speakers are used to create one or more synthesized wave fronts resulting in cancelation and reduction of unwanted toilet noise. The speakers, microphones and circuitry may be located within a toilet seat of a toilet or at a remote location. A user device or remote device may be connected to the noise reduction toilet apparatus for data recording, collection, reporting, and electronic noise filtering.
    Type: Grant
    Filed: June 8, 2016
    Date of Patent: September 11, 2018
    Inventors: David R. Hall, Dan Allen, Ben Swenson, Joshua Larsen, Jared Reynolds
  • Patent number: 10053849
    Abstract: A flush toilet of the present invention is provided with a toilet main body and a storage tank supplying cleaning water to a supply opening of the toilet main body. The toilet main body includes a bowl, a rim, a rim water passage formed on an entire circumference of the rim, and an aperture formed on the entire circumference of the rim, and a water conduit formed between the supply opening and the rim water passage. The water conduit includes an upstream water conduit extending to the right side from the supply opening, and a downstream water conduit extending to the left side from the upstream water conduit, and the downstream water conduit is formed such that a downstream end of an inner wall surface on the right side is positioned in the left side to a center line of the toilet main body in the left-right direction.
    Type: Grant
    Filed: January 27, 2017
    Date of Patent: August 21, 2018
    Assignee: TOTO LTD.
    Inventors: Naoto Matsuo, Eiji Shiohara, Hiroyuki Hara, Yoshikatsu Adachi
  • Patent number: 10047510
    Abstract: A rimless toilet pan (20) includes a forward end (F), a rearward end (R) and a pan bowl (28). A flushing outlet (32) is in fluid communication with the pan bowl (28). A flushing water inlet (30) is in fluid communication with the pan bowl (28). An inwardly facing first sidewall (34) extends substantially around the top of the pan bowl (28). A substantially horizontal ledge extends (36) substantially around the bottom of the first sidewall (34). An inwardly facing second sidewall (37) extends substantially around the pan bowl (28) under the horizontal ledge (36). A flushing water flow splitter (38) is substantially adjacent a rearward end of the first sidewall (34), the flow splitter (38) is in fluid communication with the flushing water inlet (30) and has a leftwards outlet (38a) and a rightwards outlet (38b).
    Type: Grant
    Filed: June 2, 2016
    Date of Patent: August 14, 2018
    Assignee: Caroma Industries Limited
    Inventors: Stephen John Cummings, Leonard Conrad, Johann Karunaratne, Frank Quartiero
  • Patent number: 10030377
    Abstract: A refill and wash down assembly for a vacuum toilet. The refill and wash down assembly includes a manifold having a left side, a right side and an inlet configured to be connected to a water source, a slot defined through the manifold and extending from the left side to the right side. The manifold further includes a plurality of left side ports defined on the left side and a plurality of right side ports defined on the right side. A first array of refill tubes extends from the ports on the right side of the manifold and a second array of refill tubes extends from the ports on the left side of the manifold. Each refill tube also has a nozzle on its distal end and is of a different length different than the other refill tubes in the same array.
    Type: Grant
    Filed: August 25, 2017
    Date of Patent: July 24, 2018
    Assignee: Acorn Engineering Company
    Inventor: Darryl M. Boeltl