Patents by Inventor Ryoko Ishimaru
Ryoko Ishimaru 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).
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Patent number: 10273672Abstract: A flush toilet includes a toilet main unit, a reservoir tank, and a connecting pipe member configured to connect the toilet main unit and the reservoir tank in a watertight manner after the connecting pipe member is inserted into the reservoir tank so that the reservoir tank is assembled to a predetermined installation position. The connecting pipe member includes a communicating pipe portion configured to communicate between the conduit of the toilet main unit and an interior of the tank when one end of the connecting member is inserted from the interior of the tank through the outlet of the tank into the inlet of the conduit of the toilet main unit. A horizontal adjustment portion configured to adjust the orientation of the reservoir tank to a horizontal state is provided on the toilet main unit or on the reservoir tank.Type: GrantFiled: May 25, 2017Date of Patent: April 30, 2019Assignee: TOTO LTD.Inventors: Tatsunari Harashima, Ryoko Ishimaru, Kenichi Nakamura, Shoko Imaizumi
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Patent number: 10174490Abstract: A flush toilet includes a reservoir tank assembled from above or behind to a predetermined installation position on the rear side of the conduit of a toilet main unit; a connecting pipe member, one end of which is disposed on the conduit of the toilet main unit, and the other end of which is connected to a reservoir tank; a tank-side connecting portion, disposed on the front side of the reservoir tank and connected to a connecting pipe member; and a seal member, connected in a watertight manner between a connecting pipe member and a tank-side connecting portion.Type: GrantFiled: May 26, 2017Date of Patent: January 8, 2019Assignee: TOTO LTD.Inventors: Tatsunari Harashima, Ryoko Ishimaru, Kenichi Nakamura, Shoko Imaizumi
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Patent number: 10174489Abstract: A flush toilet apparatus for discharging waste by a jet pump action is disclosed. The flush toilet apparatus has an overflow portion configured to overflow a portion of flush water flowing from a throat pipe into a water conduit into a reservoir tank so that when the flow rate of water flowing inside the throat pipe exceeds a predetermined specified flow rate, the flow rate of water supplied from the water conduit to a bowl portion is reduced to less than a predetermined specified flow rate.Type: GrantFiled: September 29, 2016Date of Patent: January 8, 2019Assignee: TOTO LTD.Inventors: Ryoko Ishimaru, Tatsunari Harashima, Hidekazu Kitaura
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Publication number: 20170350110Abstract: A flush toilet includes a toilet main unit, a reservoir tank, and a connecting pipe member configured to connect the toilet main unit and the reservoir tank in a watertight manner after the connecting pipe member is inserted into the reservoir tank so that the reservoir tank is assembled to a predetermined installation position. The connecting pipe member includes a communicating pipe portion configured to communicate between the conduit of the toilet main unit and an interior of the tank when one end of the connecting member is inserted from the interior of the tank through the outlet of the tank into the inlet of the conduit of the toilet main unit. A horizontal adjustment portion configured to adjust the orientation of the reservoir tank to a horizontal state is provided on the toilet main unit or on the reservoir tank.Type: ApplicationFiled: May 25, 2017Publication date: December 7, 2017Inventors: Tatsunari HARASHIMA, Ryoko ISHIMARU, Kenichi NAKAMURA, Shoko IMAIZUMI
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Publication number: 20170350108Abstract: A flush toilet includes a reservoir tank assembled from above or behind to a predetermined installation position on the rear side of the conduit of a toilet main unit; a connecting pipe member, one end of which is disposed on the conduit of the toilet main unit, and the other end of which is connected to a reservoir tank; a tank-side connecting portion, disposed on the front side of the reservoir tank and connected to a connecting pipe member; and a seal member, connected in a watertight manner between a connecting pipe member and a tank-side connecting portion.Type: ApplicationFiled: May 26, 2017Publication date: December 7, 2017Inventors: Tatsunari HARASHIMA, Ryoko ISHIMARU, Kenichi NAKAMURA, Shoko IMAIZUMI
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Patent number: 9752310Abstract: A flush toilet apparatus that can reduce the total amount of wash water supplied to a bowl portion, even though a jet-pump water supply mechanism is mounted on a toilet body. A jet pump unit induces a jet pump action for making a flow rate of water flowing inside of a throat pipe higher than a flow rate of water injected from a nozzle to supply water at the increased flow rate to water ejection portions, and the flush toilet apparatus switches a channel state of the jet pump unit to sequentially execute a first step, in which water at a first flow rate is supplied to the water ejection portions, and a second step, in which water at a second flow rate lower than the first flow rate is supplied to the water ejection portions.Type: GrantFiled: August 4, 2014Date of Patent: September 5, 2017Assignee: TOTO LTD.Inventors: Hidekazu Kitaura, Ryoko Ishimaru, Tomohiro Iwabata
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Patent number: 9745731Abstract: A flush toilet apparatus that can reduce the total amount of wash water supplied to a bowl portion, even though a jet-pump water supply mechanism is mounted on a wash-down toilet body. A jet pump unit induces a jet pump action for making a flow rate of water flowing inside of a throat pipe higher than a flow rate of water injected from a nozzle to supply water at the increased flow rate to water ejection portions, and the flush toilet apparatus switches a channel state of the jet pump unit to sequentially execute a water flow forming step, in which water at a first flow rate is supplied to the water ejection portions, and a water flow maintaining step, following the water flow forming step and in which water at a second flow rate lower than the first flow rate is supplied to the water ejection portions.Type: GrantFiled: August 4, 2014Date of Patent: August 29, 2017Assignee: TOTO LTD.Inventors: Hidekazu Kitaura, Ryoko Ishimaru, Tomohiro Iwabata
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Patent number: 9670658Abstract: A switching mechanism is configured to switch an advancing direction of water injected from a nozzle by moving between a first position and a second position. The switching mechanism is held at the second position by a force received from the water injected by the nozzle during the tank water feeding process. A refill mechanism has a refill pipe for causing the water injected from the nozzle during the tank water feeding process and whose advancing direction is switched by the switching mechanism to flow in through an inflow port on one end side. The refill pipe is configured to lead the water having flowed in through the inflow port to a toilet stool body without flowing through a suction port of a throat pipe.Type: GrantFiled: February 10, 2016Date of Patent: June 6, 2017Assignee: TOTO LTD.Inventors: Ryoko Ishimaru, Hidekazu Kitaura, Takahiro Maruyama
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Publication number: 20170089052Abstract: A flush toilet apparatus for discharging waste by a jet pump action is disclosed. The flush toilet apparatus has an overflow portion configured to overflow a portion of flush water flowing from a throat pipe into a water conduit into a reservoir tank so that when the flow rate of water flowing inside the throat pipe exceeds a predetermined specified flow rate, the flow rate of water supplied from the water conduit to a bowl portion is reduced to less than a predetermined specified flow rate.Type: ApplicationFiled: September 29, 2016Publication date: March 30, 2017Inventors: Ryoko ISHIMARU, Tatsunari HARASHIMA, Hidekazu KITAURA
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Patent number: 9476191Abstract: A flush toilet apparatus includes a tank and a jet pump unit. The tank includes: a first tank portion; and a second tank portion formed so as to extend part of a bottom wall of the first tank portion downward. The jet pump unit includes a throat pipe provided with a suction port that is an inlet of water, and at least the part of the second tank portion is formed at a position overlapping with the suction port when viewed from the top.Type: GrantFiled: March 27, 2014Date of Patent: October 25, 2016Assignee: TOTO LTD.Inventors: Hidekazu Kitaura, Ryoko Ishimaru, Tomohiro Iwabata, Yoshiki Ota, Takashi Yoshioka
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Patent number: 9476193Abstract: This flush toilet apparatus includes a traveling-direction switching mechanism switching a mode between a toilet washing mode and a tank storage mode. This traveling-direction switching mechanism includes: a shield portion directing jet water to an outside of a throat pipe at a time of the tank storage mode; a moving mechanism moving the shield portion from a position at a time of the toilet washing mode in a first direction to a position at the time of the tank storage mode; and a guide surface switching a traveling direction of the jet water so that after the traveling direction is switched, a flow rate of the jet water is higher in a second direction opposite to the first direction than in the first direction.Type: GrantFiled: March 27, 2014Date of Patent: October 25, 2016Assignee: TOTO LTD.Inventors: Hidekazu Kitaura, Ryoko Ishimaru, Tomohiro Iwabata
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Publication number: 20160237668Abstract: A switching mechanism is configured to switch an advancing direction of water injected from a nozzle by moving between a first position and a second position. The switching mechanism is held at the second position by a force received from the water injected by the nozzle during the tank water feeding process. A refill mechanism has a refill pipe for causing the water injected from the nozzle during the tank water feeding process and whose advancing direction is switched by the switching mechanism to flow in through an inflow port on one end side. The refill pipe is configured to lead the water having flowed in through the inflow port to a toilet stool body without flowing through a suction port of a throat pipe.Type: ApplicationFiled: February 10, 2016Publication date: August 18, 2016Applicant: TOTO LTD.Inventors: Ryoko ISHIMARU, Hidekazu KITAURA, Takahiro MARUYAMA
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Patent number: 9328495Abstract: A flush toilet apparatus includes a tank and a jet pump unit. A throat pipe of the jet pump unit includes a linear portion formed to linearly extend obliquely upward from a suction port that is an inlet of water. The suction port is formed so that the entire edge is along a horizontal surface.Type: GrantFiled: March 27, 2014Date of Patent: May 3, 2016Assignee: TOTO LTD.Inventors: Hidekazu Kitaura, Ryoko Ishimaru, Tomohiro Iwabata, Yoshiki Ota, Takashi Yoshioka
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Patent number: 9021622Abstract: There is provided a flush toilet device capable of being configured in a compact size and supplying a sufficient flow amount of water to a toilet to reliably flush and discharge waste. According to the flush toilet device, a straight pipe portion of a throat which is arranged inside a tank is arranged in a state where a center axis thereof inclines with respect to a front-back direction of the tank when viewed from an upper side.Type: GrantFiled: October 11, 2013Date of Patent: May 5, 2015Assignee: Toto Ltd.Inventors: Hidekazu Kitaura, Ryoko Ishimaru, Tomohiro Iwabata, Yoshiki Ota, Takashi Yoshioka
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Publication number: 20150040304Abstract: A flush toilet apparatus that can reduce the total amount of wash water supplied to a bowl portion, even though a jet-pump water supply mechanism is mounted on a wash-down toilet body. A jet pump unit induces a jet pump action for making a flow rate of water flowing inside of a throat pipe higher than a flow rate of water injected from a nozzle to supply water at the increased flow rate to water ejection portions, and the flush toilet apparatus switches a channel state of the jet pump unit to sequentially execute a water flow forming step, in which water at a first flow rate is supplied to the water ejection portions, and a water flow maintaining step, following the water flow forming step and in which water at a second flow rate lower than the first flow rate is supplied to the water ejection portions.Type: ApplicationFiled: August 4, 2014Publication date: February 12, 2015Applicant: TOTO LTD.Inventors: Hidekazu KITAURA, Ryoko ISHIMARU, Tomohiro IWABATA
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Publication number: 20150040305Abstract: A flush toilet apparatus that can reduce the total amount of wash water supplied to a bowl portion, even though a jet-pump water supply mechanism is mounted on a toilet body. A jet pump unit induces a jet pump action for making a flow rate of water flowing inside of a throat pipe higher than a flow rate of water injected from a nozzle to supply water at the increased flow rate to water ejection portions, and the flush toilet apparatus switches a channel state of the jet pump unit to sequentially execute a first step, in which water at a first flow rate is supplied to the water ejection portions, and a second step, in which water at a second flow rate lower than the first flow rate is supplied to the water ejection portions.Type: ApplicationFiled: August 4, 2014Publication date: February 12, 2015Applicant: TOTO LTD.Inventors: Hidekazu KITAURA, Ryoko ISHIMARU, Tomohiro IWABATA
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Publication number: 20140289950Abstract: This flush toilet apparatus includes a traveling-direction switching mechanism switching a mode between a toilet washing mode and a tank storage mode. This traveling-direction switching mechanism includes: a shield portion directing jet water to an outside of a throat pipe at a time of the tank storage mode; a moving mechanism moving the shield portion from a position at a time of the toilet washing mode in a first direction to a position at the time of the tank storage mode; and a guide surface switching a traveling direction of the jet water so that after the traveling direction is switched, a flow rate of the jet water is higher in a second direction opposite to the first direction than in the first direction.Type: ApplicationFiled: March 27, 2014Publication date: October 2, 2014Applicant: TOTO LTD.Inventors: Hidekazu KITAURA, Ryoko ISHIMARU, Tomohiro IWABATA
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Publication number: 20140289949Abstract: A flush toilet apparatus includes a tank and a jet pump unit. A throat pipe of the jet pump unit includes a linear portion formed to linearly extend obliquely upward from a suction port that is an inlet of water. The suction port is formed so that the entire edge is along a horizontal surface.Type: ApplicationFiled: March 27, 2014Publication date: October 2, 2014Applicant: TOTO LTD.Inventors: Hidekazu KITAURA, Ryoko ISHIMARU, Tomohiro IWABATA, Yoshiki OTA, Takashi YOSHIOKA
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Publication number: 20140289944Abstract: A flush toilet apparatus includes a tank and a jet pump unit. The tank includes: a first tank portion; and a second tank portion formed so as to extend part of a bottom wall of the first tank portion downward. The jet pump unit includes a throat pipe provided with a suction port that is an inlet of water, and at least the part of the second tank portion is formed at a position overlapping with the suction port when viewed from the top.Type: ApplicationFiled: March 27, 2014Publication date: October 2, 2014Applicant: TOTO LTD.Inventors: Hidekazu KITAURA, Ryoko ISHIMARU, Tomohiro IWABATA, Yoshiki OTA, Takashi YOSHIOKA
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Publication number: 20140289948Abstract: A flush toilet apparatus includes a tank and a jet pump unit. A throat pipe of the jet pump unit includes: a first linear portion formed to linearly extend obliquely upward from a suction port; and a second linear portion formed to linearly extend toward an inlet of a water conduit on a lower side, and the entire throat pipe is in an inverted U-shape when viewed from the side. The throat pipe is arranged so that an angle between a central axis of the second linear portion and a vertical direction is smaller than an angle between a central axis of the first linear portion and the vertical direction when viewed from the side.Type: ApplicationFiled: March 27, 2014Publication date: October 2, 2014Applicant: TOTO LTD.Inventors: Hidekazu KITAURA, Ryoko ISHIMARU, Tomohiro IWABATA, Yoshiki OTA, Takashi YOSHIOKA