Patents Assigned to Toto Ltd.
  • FLUSH WATER TANK APPARATUS AND FLUSH TOILET APPARATUS PROVIDED WITH THE SAME
    Publication number: 20210381214
    Abstract: Provided are a flush water tank apparatus capable of restraining instability of an operation of a piston and restraining fluctuations in a water pressure of flush water discharged from a first discharge part provided separately from an inlet, and a flush toilet apparatus including the flush water tank apparatus. A discharge valve hydraulic drive portion of a flush water tank apparatus of the present invention includes a cylinder, a piston, and a rod extending from the piston through a through-hole portion formed in the cylinder, the cylinder including an inlet into which flush water flows, a first discharge part that is provided separately from the inlet to drain the flush water, and a second discharge part that is provided separately from the first discharge part and is formed between the rod and the through-hole portion and between the piston and the through-hole portion.
    Type: Application
    Filed: June 9, 2021
    Publication date: December 9, 2021
    Applicant: TOTO LTD.
    Inventors: Nobuhiro HAYASHI, Hidekazu KITAURA, Akihiro SHIMUTA, Masahiro KUROISHI, Hiroshi HASHIMOTO, Koki SHINOHARA, Kenji HATAMA, Takashi YOSHIOKA
  • Toilet seat
    Patent number: 11191399
    Abstract: According to the embodiment, a toilet seat including: a bottom plate; a top plate including a sidewall part and a seating part; and a bonding member bonding the bottom plate and the sidewall part and having an exposed surface, the sidewall part including a sidewall base, a first hanging part extending downward from a lower end of the sidewall base, and a second hanging part provided to be separated from the first hanging part at the lower end of the sidewall base to provide a recess recessed upward between the first and second hanging parts, the second hanging part being disposed at a position not overlapping the bottom plate in a vertical direction, the bonding member being provided in the recess, the exposed surface being disposed between the second hanging part and the bottom plate, a width of the second hanging part decreasing downward from the sidewall base.
    Type: Grant
    Filed: May 21, 2020
    Date of Patent: December 7, 2021
    Assignee: Toto Ltd.
    Inventors: Takeshi Hayashida, Nobuhiko Umeda, Shuhei Nishiyama, Takeshi Inada, Minoru Sato
  • Flush water tank apparatus and flush toilet apparatus comprising flush water tank apparatus
    Patent number: 11186975
    Abstract: A flush water tank apparatus supplying flush water to a flush toilet by using electrical power generated in the flush water tank apparatus, and a flush toilet apparatus including the flush water tank apparatus are provided. The flush water tank apparatus includes a discharge valve hydraulic drive portion, a discharge control device, an electromagnetic valve, a branching portion causing supplied tap water to flow into the discharge control device and into the water supply valve respectively, and a generator generating electrical power to operate the electromagnetic valve. The generator is provided on a water conduit in a downstream side of the branching portion, and on the water conduit in an upstream side of the water supply valve or in a downstream side of the water supply valve.
    Type: Grant
    Filed: August 4, 2020
    Date of Patent: November 30, 2021
    Assignee: TOTO LTD.
    Inventors: Hidekazu Kitaura, Nobuhiro Hayashi, Akihiro Shimuta, Masahiro Kuroishi
  • Electrostatic chuck
    Patent number: 11152244
    Abstract: An electrostatic chuck includes: a ceramic dielectric substrate; a base plate; and a heater plate. The heater plate includes a first and a second support plates including a metal, a heater element provided between the first and the second support plates, a first resin layer provided between the first support plate and the heater element, and a second resin layer provided between the second support plate and the heater element. A surface of the first support plate on the second support plate side includes a first region and a second region, the first region overlapping the heater element when viewed along the stacking direction, the second region not overlapping the heater element when viewed along the stacking direction. In a cross section parallel to the stacking direction, the second region protrudes toward the second support plate side compared to the first region.
    Type: Grant
    Filed: January 9, 2019
    Date of Patent: October 19, 2021
    Assignee: Toto Ltd.
    Inventors: Kosuke Yamaguchi, Hitoshi Sasaki, Kengo Maehata, Shumpei Kondo, Yuichi Yoshii
  • Semiconductor manufacturing apparatus member, and display manufacturing apparatus and semiconductor manufacturing apparatus comprising semiconductor manufacturing apparatus member
    Patent number: 11142829
    Abstract: According to one embodiment, a semiconductor manufacturing apparatus member includes a base and a particle-resistant layer. The base includes a main portion and an alumite layer. The main portion includes aluminum. The alumite layer is provided at a front surface of the main portion. The particle-resistant layer is provided on the alumite layer and includes a polycrystalline ceramic. An Al purity of the main portion is 99.00% or more.
    Type: Grant
    Filed: February 26, 2020
    Date of Patent: October 12, 2021
    Assignee: Toto Ltd.
    Inventors: Yasutaka Nitta, Takuma Wada
  • Electrostatic chuck
    Patent number: 11145532
    Abstract: An electrostatic chuck includes a base plate and a ceramic dielectric substrate. The ceramic dielectric substrate has a first major surface. The first major surface includes at least a first region and a second region. At least one first gas introduction hole is connected to at least one of multiple first grooves. At least one second groove are provided in the first region. The multiple first grooves have substantially circular planar configurations and are provided concentrically. The second groove is connected to at least two of the first grooves. When projected onto a plane perpendicular to a first direction from the base plate toward the ceramic dielectric substrate, at least a portion of the first gas introduction hole overlaps at least one of the first groove or the second groove at a portion where the first groove and the second groove are connected.
    Type: Grant
    Filed: December 20, 2019
    Date of Patent: October 12, 2021
    Assignee: Toto Ltd.
    Inventors: Masafumi Ikeguchi, Tetsuro Itoyama, Shuichiro Saigan, Jun Shiraishi
  • Wet-area device and method for manufacturing wet-area device
    Patent number: 11141954
    Abstract: According to one embodiment, a wet-area device includes a main part and a first layer. The first layer is provided on an outer surface of the main part. The main part includes a main part unevenness at a side of the outer surface of the main part. The main part unevenness includes a plurality of main part recesses and a plurality of main part protrusions. The first layer includes a first unevenness at a side of an outer surface of the first layer. The first unevenness includes a plurality of first recesses and a plurality of first protrusions. The first unevenness is arranged along the main part unevenness. An average height of the main part unevenness is less than an average length of the main part unevenness.
    Type: Grant
    Filed: August 26, 2020
    Date of Patent: October 12, 2021
    Assignee: TOTO LTD.
    Inventors: Tomoki Baba, Satoshi Shimizu, Takuma Kawasaki
  • Flush toilet
    Patent number: 11136752
    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: Grant
    Filed: March 19, 2020
    Date of Patent: October 5, 2021
    Assignee: TOTO LTD.
    Inventors: Shu Kashirajima, Takahiro Hara, Masaki Mori, Yukari Kawazu, Tsubasa Ishibashi, Hironori Yamasaki
  • WASHDOWN FLUSH TOILET
    Publication number: 20210301513
    Abstract: The object of the present invention is to provide a washdown flush toilet which can maintain effective waste discharging performance even with a relatively smaller amount of flush water. The present invention is a washdown flush toilet including: a bowl part configured to receive waste, and a water discharge trap conduit connected to a lower portion of the bowl part. The water discharge trap conduit includes: an inlet pipe part whose one end is continuous or connected to the lower portion of the bowl part; a trap ascending pipe part whose one end is continuous or connected to the other end of the inlet pipe part and which forms an ascending flow channel; and a trap descending pipe part whose one end is continuous or connected to the other end of the trap ascending pipe part and which forms a descending flow channel.
    Type: Application
    Filed: March 18, 2021
    Publication date: September 30, 2021
    Applicant: TOTO LTD.
    Inventor: Shoko IMAIZUMI
  • WASHDOWN FLUSH TOILET
    Publication number: 20210301515
    Abstract: The object of the present invention is to provide a washdown flush toilet which can maintain effective waste discharging performance even with a relatively smaller amount of flush water. The present invention is a washdown flush toilet including: a bowl part configured to receive waste, and a water discharge trap conduit connected to a lower portion of the bowl part. The water discharge trap conduit includes: an inlet pipe part whose one end is continuous or connected to the lower portion of the bowl part; a trap ascending pipe part whose one end is continuous or connected to the other end of the inlet pipe part and which forms an ascending flow channel; and a trap descending pipe part whose one end is continuous or connected to the other end of the trap ascending pipe part and which forms a descending flow channel.
    Type: Application
    Filed: March 18, 2021
    Publication date: September 30, 2021
    Applicant: TOTO LTD.
    Inventor: Shoko IMAIZUMI
  • Flush toilet
    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
  • Plasma-resistant member
    Patent number: 11127569
    Abstract: A plasma-resistant member that includes a base material and a layer structural component is provided, wherein the layer structural component includes an yttria polycrystalline body, is formed at a surface of the base material, and has plasma resistance; crystallites that are included in the yttria polycrystalline body included in the layer structural component are not bonded to each other via a heterogenous phase; the yttria polycrystalline body included in the layer structural component has a crystal structure including only cubic, or a crystal structure in which cubic and monoclinic coexist; and an average value of a proportion of monoclinic to cubic inside the yttria polycrystalline body included in the layer structural component is greater than 0% and not more than 60%.
    Type: Grant
    Filed: June 22, 2018
    Date of Patent: September 21, 2021
    Assignee: Toto Ltd.
    Inventor: Junichi Iwasawa
  • Flush toilet
    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
  • Composite structure
    Patent number: 11117356
    Abstract: The composite structure of the present invention includes a substrate, and a structure provided on the substrate surface and having a brittle material as the principal component thereof. The structure is polycrystalline, and the average crystallite size is 100 nm or less. The substrate includes at least a first region containing the substrate surface. The first region includes a filler and a matrix which has a first resin as the principal component thereof. The diameter of 90% of the filler particles (D90) is 1.0-60 ?m, inclusive. The surface area fill rate of the filler at the substrate surface per unit area is greater than 10% and no greater than 70%.
    Type: Grant
    Filed: September 14, 2017
    Date of Patent: September 14, 2021
    Assignee: TOTO LTD.
    Inventor: Takuma Wada
  • Flush toilet
    Patent number: 11111658
    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.
    Type: Grant
    Filed: September 23, 2019
    Date of Patent: September 7, 2021
    Assignee: TOTO LTD.
    Inventors: Tsubasa Miyake, Hironori Yamasaki, Mitsuhiro Suenaga, Takashi Yoshioka, Koichiro Hiwa
  • FLUSH WATER TANK APPARATUS AND FLUSH TOILET APPARATUS PROVIDED WITH THE SAME
    Publication number: 20210270023
    Abstract: The flush water tank apparatus of the present invention includes: a clutch mechanism 30 coupling the discharge valve 12 and the discharge valve hydraulic drive unit 14 to pull up the discharge valve, and being disconnected at a predetermined timing to cause the discharge valve to descend; flush water amount selection device capable of selecting from a first and a second amounts of flush water; a float device 26 including a float and a holding mechanism switchable between a holding and a non-holding states in conjunction with movement of the float; and a timing control mechanism controlling a timing of a drain port 10a being blocked; and, when the second amount is selected, causes the second amount of flush water to be discharged by switching the holding mechanism to the non-holding state before a water level in a storage tank drops to a predetermined water level.
    Type: Application
    Filed: March 25, 2021
    Publication date: September 2, 2021
    Applicant: TOTO LTD.
    Inventors: Hidekazu KITAURA, Nobuhiro HAYASHI, Akihiro SHIMUTA, Masahiro KUROISHI
  • FLUSH WATER TANK APPARATUS AND FLUSH TOILET APPARATUS PROVIDED WITH THE SAME
    Publication number: 20210270024
    Abstract: A flush water tank apparatus enabling accurately setting an amount of flush water to be discharged while opening a discharge valve via a discharge valve hydraulic drive unit and a flush toilet apparatus including the flush water tank are provided. A flush water tank apparatus includes a first float device; a second float device that prevents from descent of the discharge valve according to the water level so as to discharge a second amount of flush water; and an adjustment mechanism configured so that when the second amount of flush water is selected by the flush water amount selection portion the clutch mechanism is disconnected at a pull-up height of the discharge valve such that the discharge valve descended by the disconnection of the clutch mechanism is held by the second float device in a holding state.
    Type: Application
    Filed: March 25, 2021
    Publication date: September 2, 2021
    Applicant: TOTO LTD.
    Inventors: Hidekazu KITAURA, Nobuhiro HAYASHI, Akihiro SHIMUTA, Masahiro KUROISHI
  • FLUSH WATER TANK APPARATUS AND FLUSH TOILET APPARATUS PROVIDED WITH THE SAME
    Publication number: 20210270025
    Abstract: There are provided a flush water tank apparatus capable of accurately setting the amount of flush water to be discharged while opening a discharge valve by a discharge valve hydraulic drive unit. A flush water tank apparatus includes a valve controller, where, in a case where a first amount of flush water is selected, the valve controller causes the timing control mechanism to be engaged with the discharge valve and causes the timing control mechanism to operate such that engagement is released after a lapse of a first period of time, and in a case where a second amount of flush water is selected, the valve controller causes the timing control mechanism to be engaged with the discharge valve and causes the timing control mechanism to operate such that engagement is released after lapse of a second period of time shorter than the first period of time.
    Type: Application
    Filed: March 25, 2021
    Publication date: September 2, 2021
    Applicant: TOTO LTD.
    Inventors: Nobuhiro HAYASHI, Hidekazu KITAURA, Akihiro SHIMUTA, Masahiro KUROISHI
  • FLUSH WATER TANK APPARATUS AND FLUSH TOILET APPARATUS PROVIDED WITH THE SAME
    Publication number: 20210270026
    Abstract: The present invention is a flush water tank apparatus (4) and includes: a storage tank (10) on which a drain port (10a) is formed, a discharge valve (12) opening/closing the drain port; a discharge valve hydraulic drive unit (14) driving the discharge valve using water supply pressure; a clutch mechanism (30) coupling the discharge valve and the discharge valve hydraulic drive unit to pull up the discharge valve; flush water amount selection device capable of selecting between a first and a second amount of flush water; a timing control mechanism controlling a timing of the drain port being blocked; and a control jet unit (20) jetting, when the second amount is selected, flush water to a water receiving surface provided on the timing control mechanism so that a timing of the drain port being blocked is earlier than a case of the first amount of flush water.
    Type: Application
    Filed: March 25, 2021
    Publication date: September 2, 2021
    Applicant: TOTO LTD.
    Inventors: Nobuhiro HAYASHI, Hidekazu KITAURA, Akihiro SHIMUTA, Masahiro KUROISHI
  • Toilet tank
    Patent number: D931994
    Type: Grant
    Filed: March 25, 2020
    Date of Patent: September 28, 2021
    Assignee: TOTO Ltd.
    Inventors: Masanobu Wano, Tomohiro Miyazaki