US20140048157A1 - Water Supply Delaying Structure of Inlet Valve - Google Patents

Water Supply Delaying Structure of Inlet Valve Download PDF

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Publication number
US20140048157A1
US20140048157A1 US13/777,114 US201313777114A US2014048157A1 US 20140048157 A1 US20140048157 A1 US 20140048157A1 US 201313777114 A US201313777114 A US 201313777114A US 2014048157 A1 US2014048157 A1 US 2014048157A1
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US
United States
Prior art keywords
buoy
external
screw
inlet valve
delay
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US13/777,114
Inventor
Yiz-hou Fu
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Xiamen Runner Industrial Corp
Original Assignee
Xiamen Runner Industrial Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Xiamen Runner Industrial Corp filed Critical Xiamen Runner Industrial Corp
Assigned to XIAMEN RUNNER INDUSTRIAL CORPORATION reassignment XIAMEN RUNNER INDUSTRIAL CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: FU, YIZ-HOU
Publication of US20140048157A1 publication Critical patent/US20140048157A1/en
Abandoned legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03D—WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR
    • E03D1/00—Water flushing devices with cisterns ; Setting up a range of flushing devices or water-closets; Combinations of several flushing devices
    • E03D1/30—Valves for high or low level cisterns; Their arrangement ; Flushing mechanisms in the cistern, optionally with provisions for a pre-or a post- flushing and for cutting off the flushing mechanism in case of leakage
    • E03D1/32—Arrangement of inlet valves
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7287—Liquid level responsive or maintaining systems
    • Y10T137/7358—By float controlled valve

Definitions

  • the present invention relates to a bathroom accessory, and more particularly to a water supply delaying structure of an inlet valve.
  • a buoy is provided for controlling the water intake, and high and low positions of the buoy A are used for adjusting the water level, the quantity of discharged water, and the timing of inputting water through an inlet valve, such that after the water level of the water tank drops, the buoy A drops accordingly to drive a swing rod B to turn and open an air hole formed on an upper cover of the inlet valve, so as to open the water inlet of the inlet valve and perform water supplement of the water tank, After the water level of the water tank rises, the buoy A rises accordingly to drive the swing rod B to turn in an opposite direction to cover the air hole of the upper cover, so as to close the water inlet of the inlet valve.
  • the inventor of the present invention developed a water supply delaying structure to overcome the aforementioned problems of the prior art.
  • the present invention provides a water supply delaying structure of an inlet valve installed on an inlet valve body, comprising: an external buoy, a delay buoy, and internal and external screws, wherein the external buoy has an upwardly-open chamber, a plurality of open slots formed on a sidewall of the external buoy and interconnected with the chamber, an opening formed at the bottom of the chamber, an overflow pad is installed on the opening, an orifice formed at the middle of the overflow pad, and a check valve loosely installed at the bottom of the opening; an end of the internal screw is adjustably coupled to the external buoy, and the other end of the internal screw is rotably mounted onto the inlet valve body; the delay buoy is floatably installed in the chamber of the external buoy, and the delay buoy has a downwardly-open cavity; and an end of the external screw is adjustably coupled to the delay buoy, and the other end of the external screw is rotably coupled to a swing rod of the inlet valve body, and a link is defined between the delay buoy, the external screw
  • the chamber of the external buoy includes a hollow screw column, an internal thread formed on an inner wall of the screw column, and a corresponding external screw installed on the screw body of the corresponding internal screw.
  • the delay buoy includes a penetrating screw hole formed thereon, an internal thread formed on an inner wall of the screw hole, and a corresponding external screw installed on the screw body of the external screw.
  • the check valve includes a hook, and the hook can be hanged onto a hole of the opening of the external buoy.
  • the delay buoy of the present invention is provided for delaying the timing of opening the inlet valve to assure that the water inlet is opened after the drainage valve is closed, so that the quantity of discharged water is equal to the constant displacement of the drainage valve, so as to prevent unnecessary waste of water resources and achieve the effect of saving water.
  • FIG. 1 is a schematic view of a conventional inlet valve of a water tank of a toilet
  • FIG. 2 is an exploded view of an inlet valve of the present invention
  • FIG. 3 is a perspective view of an inlet valve of the present invention.
  • FIG. 4 is a cross-sectional view of an inlet valve of the present invention, showing the height of a delay buoy 3 at the position of the shortest lag time;
  • FIG. 5 is a cross-sectional view of an inlet valve of the present invention, showing the height of a delay buoy 3 at the position of the longest lag time;
  • FIG. 6 is a schematic view of an embodiment of the present invention.
  • the water supply delaying structure is installed on an inlet valve body 1 and comprises an external buoy 2 and a delay buoy 3 , and the external buoy 2 has an internal screw 4 corresponding to an external screw 5 of the delay buoy 3 .
  • the external buoy 2 has an upwardly-open chamber 21 , a plurality of open slots 22 formed on a sidewall of the external buoy 2 and interconnected with the chamber 21 , an opening 23 formed at the bottom of the chamber 21 , an overflow pad 24 installed on the opening 23 and corresponding to the diameter of the opening 23 , an orifice 241 formed at the middle of the overflow pad 24 , a check valve 25 installed at the bottom of the opening 23 and having a hook 251 for loosely hanging the check valve 25 onto a hole of the opening 23 , a hollow screw column 26 disposed in the chamber 21 of the external buoy 2 , an internal thread formed on an inner wall of the screw column 26 , an external screw formed on the screw body of the internal screw 4 , wherein a lower end of the external screw is passed through the thread of the screw column 26 and coupled to the external buoy 2 , and an upper end of the internal screw 4 is rotably fixed onto the inlet valve body 1 , such that the internal screw 4 can be turned to drive the external buoy 2 to move vertically up
  • the delay buoy 3 is floatably installed in the chamber 21 of the external buoy 2 and has a downwardly-open cavity 31 , and a penetrating screw hole 32 formed at a position corresponding to the screw column 26 of the external buoy 2 , an internal thread formed on an inner wall of the screw hole 32 , such that when the screw hole 32 of the delay buoy 3 is sheathed on the screw column 26 of the external buoy 2 , and an external thread is formed on the screw body of the external screw 5 , wherein a lower end of the external screw 5 is sheathed with the corresponding internal screw 4 and the screw hole 32 of the delay buoy 3 coupled to the delay buoy 3 , and an upper end of the external screw 5 can be rotably coupled to a swing rod 11 of the inlet valve body 1 , so as to define a link between the delay buoy 3 , the external screw 5 and the swing rod 11 , and the external screw 5 can be rotated to drive the delay buoy 3 to move vertically up and down in the chamber 21 of the external buoy 2 to adjust the height, and the
  • the opening 23 is closed due to the water pressure of the check valve 25 at the bottom of the external buoy 3 .
  • water in the water tank passes through the open slot 22 on the sidewall of the external buoy 3 and flows into the chamber 21 , so that the delay buoy 3 floats upward due to the buoyancy of water and links the external screw 5 to move longitudinally upward, so as to drive the swing rod 11 of the inlet valve body 1 to swing upwardly in a counterclockwise direction to cover the air hole at the upper cover of the inlet valve body 1 and close the water inlet of the inlet valve.
  • the opening 23 is opened since water pressure is not exerted onto the check valve 25 .
  • a portion of water in the chamber 21 of the external buoy 3 flows out from the open slot 22 on the sidewall of the external buoy 3 , and the other portion passes slowly from the orifice at the middle of the overflow pad 23 and flows out from a gap between the check valve 25 and the opening 22 .
  • the delay buoy 3 is no longer supported by the buoyancy and drops due to gravity, so as to drive the external screw 5 to move longitudinally downward and further drive the swing rod 11 of the inlet valve body 1 to swing downwardly in a clockwise direction and open the air hole on the upper cover of the inlet valve body 1 and starts inputting water from the water inlet of the inlet valve.
  • the present invention delays the timing of opening the inlet value by the delay buoy to assure that the water inlet of the inlet valve is opened only after the drainage valve is closed. Therefore, the displacement is equal to the constant water displacement of the drainage valve, and the invention can achieve the effects of preventing unnecessary waste of water resources and saving water.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Check Valves (AREA)
  • Sanitary Device For Flush Toilet (AREA)

Abstract

Disclosed is a water supply delaying structure installed on an inlet valve body of an inlet valve, including an external buoy, a delay buoy, and internal and external screws. The external buoy includes an upwardly-open chamber, open slots formed on a sidewall of the external buoy, an opening formed at the bottom of the chamber, a check valve loosely installed at the bottom of the opening; an end of the internal screw is adjustably coupled to the external buoy, and the other end of the internal screw is rotably fixed onto the inlet valve body; the delay buoy is floatably installed in the chamber of the external buoy, and an end of the external screw is adjustably coupled to the delay buoy, and the other end of the external screw is rotably coupled to a swing rod of the inlet valve body.

Description

    BACKGROUND OF THE INVENTION
  • 1. Field of the Invention
  • The present invention relates to a bathroom accessory, and more particularly to a water supply delaying structure of an inlet valve.
  • 2. Description of Related Art
  • With reference to FIG. 1 for a conventional inlet valve of a water tank of a toilet, a buoy is provided for controlling the water intake, and high and low positions of the buoy A are used for adjusting the water level, the quantity of discharged water, and the timing of inputting water through an inlet valve, such that after the water level of the water tank drops, the buoy A drops accordingly to drive a swing rod B to turn and open an air hole formed on an upper cover of the inlet valve, so as to open the water inlet of the inlet valve and perform water supplement of the water tank, After the water level of the water tank rises, the buoy A rises accordingly to drive the swing rod B to turn in an opposite direction to cover the air hole of the upper cover, so as to close the water inlet of the inlet valve. During use, it is found that the water level of the water tank drops to a specific position in the process of opening the drainage valve for water drainage, and the buoy A of the inlet valve descends to open the water inlet of the inlet valve, so as to start the water supplement of the water tank, and thus water is discharged on one side and inputted on the other side. Therefore, the water remained in the water tank and some of the supplementary water are discharged from the water outlet. In other words, the actual quantity of discharged water is equal to the constant displacement of the drainage valve plus the quantity of water (without having any flushing effect) entering into the inlet valve before the drainage valve is closed, and thus causing unnecessary waste of water resources. Therefore, the inventor of the present invention developed a water supply delaying structure to overcome the aforementioned problems of the prior art.
    • SUMMARY OF THE INVENTION
  • Therefore, it is a primary objective of the present invention to provide a water supply delaying structure of an inlet valve installed in a water tank of a toilet and capable of controlling the water to be inputted through the inlet vale after the drainage valve is closed, so as to achieve the effect of saving water.
  • To achieve the aforementioned objective, the present invention provides a water supply delaying structure of an inlet valve installed on an inlet valve body, comprising: an external buoy, a delay buoy, and internal and external screws, wherein the external buoy has an upwardly-open chamber, a plurality of open slots formed on a sidewall of the external buoy and interconnected with the chamber, an opening formed at the bottom of the chamber, an overflow pad is installed on the opening, an orifice formed at the middle of the overflow pad, and a check valve loosely installed at the bottom of the opening; an end of the internal screw is adjustably coupled to the external buoy, and the other end of the internal screw is rotably mounted onto the inlet valve body; the delay buoy is floatably installed in the chamber of the external buoy, and the delay buoy has a downwardly-open cavity; and an end of the external screw is adjustably coupled to the delay buoy, and the other end of the external screw is rotably coupled to a swing rod of the inlet valve body, and a link is defined between the delay buoy, the external screw and the swing rod.
  • The chamber of the external buoy includes a hollow screw column, an internal thread formed on an inner wall of the screw column, and a corresponding external screw installed on the screw body of the corresponding internal screw.
  • The delay buoy includes a penetrating screw hole formed thereon, an internal thread formed on an inner wall of the screw hole, and a corresponding external screw installed on the screw body of the external screw.
  • The check valve includes a hook, and the hook can be hanged onto a hole of the opening of the external buoy.
  • With the aforementioned solution, the delay buoy of the present invention is provided for delaying the timing of opening the inlet valve to assure that the water inlet is opened after the drainage valve is closed, so that the quantity of discharged water is equal to the constant displacement of the drainage valve, so as to prevent unnecessary waste of water resources and achieve the effect of saving water.
    • BRIEF DESCRIPTION OF THE DRAWINGS
  • The invention, as well as its many advantages, may be further understood by the following detailed description and drawings in which:
  • FIG. 1 is a schematic view of a conventional inlet valve of a water tank of a toilet;
  • FIG. 2 is an exploded view of an inlet valve of the present invention;
  • FIG. 3 is a perspective view of an inlet valve of the present invention;
  • FIG. 4 is a cross-sectional view of an inlet valve of the present invention, showing the height of a delay buoy 3 at the position of the shortest lag time;
  • FIG. 5 is a cross-sectional view of an inlet valve of the present invention, showing the height of a delay buoy 3 at the position of the longest lag time; and
  • FIG. 6 is a schematic view of an embodiment of the present invention.
    •  DETAILED DESCRIPTION OF THE INVENTION
  • To facilitate our examiner to understand the technical characteristics and operation of the present invention, preferred embodiments accompanied with related drawings are used for illustrating the invention as follows.
  • With reference to FIGS. 2 to 6 for a water supply delaying structure of an inlet valve in accordance with the present invention, the water supply delaying structure is installed on an inlet valve body 1 and comprises an external buoy 2 and a delay buoy 3, and the external buoy 2 has an internal screw 4 corresponding to an external screw 5 of the delay buoy 3.
  • The external buoy 2 has an upwardly-open chamber 21, a plurality of open slots 22 formed on a sidewall of the external buoy 2 and interconnected with the chamber 21, an opening 23 formed at the bottom of the chamber 21, an overflow pad 24 installed on the opening 23 and corresponding to the diameter of the opening 23, an orifice 241 formed at the middle of the overflow pad 24, a check valve 25 installed at the bottom of the opening 23 and having a hook 251 for loosely hanging the check valve 25 onto a hole of the opening 23, a hollow screw column 26 disposed in the chamber 21 of the external buoy 2, an internal thread formed on an inner wall of the screw column 26, an external screw formed on the screw body of the internal screw 4, wherein a lower end of the external screw is passed through the thread of the screw column 26 and coupled to the external buoy 2, and an upper end of the internal screw 4 is rotably fixed onto the inlet valve body 1, such that the internal screw 4 can be turned to drive the external buoy 2 to move vertically up and down to adjust the height, so as to control the water level of the water tank.
  • The delay buoy 3 is floatably installed in the chamber 21 of the external buoy 2 and has a downwardly-open cavity 31, and a penetrating screw hole 32 formed at a position corresponding to the screw column 26 of the external buoy 2, an internal thread formed on an inner wall of the screw hole 32, such that when the screw hole 32 of the delay buoy 3 is sheathed on the screw column 26 of the external buoy 2, and an external thread is formed on the screw body of the external screw 5, wherein a lower end of the external screw 5 is sheathed with the corresponding internal screw 4 and the screw hole 32 of the delay buoy 3 coupled to the delay buoy 3, and an upper end of the external screw 5 can be rotably coupled to a swing rod 11 of the inlet valve body 1, so as to define a link between the delay buoy 3, the external screw 5 and the swing rod 11, and the external screw 5 can be rotated to drive the delay buoy 3 to move vertically up and down in the chamber 21 of the external buoy 2 to adjust the height, and the height of the delay buoy 3 can be used for confirming the delay time of inputting water through the inlet valve. In FIG. 4, the height of the delay buoy 3 of the present invention situated at the position of the shortest lag time is shown. In FIG. 5, the height of the delay buoy 3 of the present invention situated at the position of the longest lag time is shown.
  • In the principle of the operation of the present invention, after the water level of the water tank rises, the opening 23 is closed due to the water pressure of the check valve 25 at the bottom of the external buoy 3. Now, water in the water tank passes through the open slot 22 on the sidewall of the external buoy 3 and flows into the chamber 21, so that the delay buoy 3 floats upward due to the buoyancy of water and links the external screw 5 to move longitudinally upward, so as to drive the swing rod 11 of the inlet valve body 1 to swing upwardly in a counterclockwise direction to cover the air hole at the upper cover of the inlet valve body 1 and close the water inlet of the inlet valve.
  • After the water level of the water tank drops, the opening 23 is opened since water pressure is not exerted onto the check valve 25. Now, a portion of water in the chamber 21 of the external buoy 3 flows out from the open slot 22 on the sidewall of the external buoy 3, and the other portion passes slowly from the orifice at the middle of the overflow pad 23 and flows out from a gap between the check valve 25 and the opening 22. After the drainage valve is closed, the delay buoy 3 is no longer supported by the buoyancy and drops due to gravity, so as to drive the external screw 5 to move longitudinally downward and further drive the swing rod 11 of the inlet valve body 1 to swing downwardly in a clockwise direction and open the air hole on the upper cover of the inlet valve body 1 and starts inputting water from the water inlet of the inlet valve.
  • With the aforementioned solution, the present invention delays the timing of opening the inlet value by the delay buoy to assure that the water inlet of the inlet valve is opened only after the drainage valve is closed. Therefore, the displacement is equal to the constant water displacement of the drainage valve, and the invention can achieve the effects of preventing unnecessary waste of water resources and saving water.
  • Many changes and modifications in the above described embodiment of the invention can, of course, be carried out without departing from the scope thereof. Accordingly, to promote the progress in science and the useful arts, the invention is disclosed and is intended to be limited only by the scope of the appended claims.

Claims (4)

What is claimed is:
1. A water supply delaying structure of an inlet valve, installed on an inlet valve body, comprising an external buoy, a delay buoy, and internal and external screws;
characterized in that:
the external buoy includes an upwardly-open chamber, a plurality of open slots formed on a sidewall of the external buoy and interconnected with the chamber, an opening formed at the bottom of the chamber, an overflow pad installed on the corresponding opening and having an orifice formed at the middle of the overflow pad, a check valve loosely installed at the bottom of the opening;
an end of the internal screw is adjustably coupled to the external buoy, and the other end of the internal screw is rotably fixed onto the inlet valve body;
the delay buoy is floatably installed in the chamber of the external buoy, and the delay buoy has a downwardly-open cavity; and
an end of the external screw is adjustably coupled to the delay buoy, and the other end of the external screw is rotably coupled to a swing rod of the inlet valve body to define a link between the delay buoy, the external screw and the swing rod.
2. The water supply delaying structure of an inlet valve according to claim 1, wherein the chamber of the external buoy contains a hollow screw column disposed therein and having an internal thread formed on an inner wall of the screw column, and the corresponding screw body of the internal screw has an external thread corresponding to the internal thread of the screw column.
3. The water supply delaying structure of an inlet valve according to claim 1, wherein the delay buoy has a penetrating screw hole formed thereon, an internal thread formed on an inner wall of the screw hole, and an external thread formed on the screw body of the external screw and corresponding to the internal thread of the delay buoy.
4. The water supply delaying structure of an inlet valve according to claim 1, wherein the check valve has a hook disposed thereon and provided for hanging the check valve onto a hole of the opening of the external buoy.
US13/777,114 2012-08-14 2013-02-26 Water Supply Delaying Structure of Inlet Valve Abandoned US20140048157A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201220400949.7 2012-08-14
CN 201220400949 CN202767204U (en) 2012-08-14 2012-08-14 Inlet valve water inflow delay structure

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130212794A1 (en) * 2012-02-22 2013-08-22 Toto Ltd. Flush water supply device, flush water tank assembly with flush water supply device, and flush toilet with flush water tank assembly
WO2016145442A1 (en) * 2015-03-12 2016-09-15 Fluidmaster, Inc. Siphon activated valve
US20170211263A1 (en) * 2016-01-22 2017-07-27 Toto Ltd. Flush toilet
US20180142454A1 (en) * 2015-06-01 2018-05-24 Yaping Tang Bowl flushing control device of low tank type toilet
CN109469170A (en) * 2018-12-05 2019-03-15 厦门融技精密科技有限公司 A kind of toilet flushing device
US10480167B2 (en) * 2017-05-25 2019-11-19 Toto Ltd. Flush water supply apparatus

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109519590B (en) * 2018-12-05 2024-03-22 厦门融技精密科技有限公司 Delay mechanism of intaking

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5836346A (en) * 1996-10-02 1998-11-17 Hunter Plumbing Products Pilot operated diaphragm fill valve
US20020134432A1 (en) * 2001-03-26 2002-09-26 Feiyu Li Ball cock assembly, float assembly for same, and method of controlling liquid level in a tank
US6666228B1 (en) * 2003-06-12 2003-12-23 Feiyu Li Ball cock assembly

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5836346A (en) * 1996-10-02 1998-11-17 Hunter Plumbing Products Pilot operated diaphragm fill valve
US20020134432A1 (en) * 2001-03-26 2002-09-26 Feiyu Li Ball cock assembly, float assembly for same, and method of controlling liquid level in a tank
US6666228B1 (en) * 2003-06-12 2003-12-23 Feiyu Li Ball cock assembly

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130212794A1 (en) * 2012-02-22 2013-08-22 Toto Ltd. Flush water supply device, flush water tank assembly with flush water supply device, and flush toilet with flush water tank assembly
US9499964B2 (en) * 2012-02-22 2016-11-22 Toto Ltd. Flush water supply device, flush water tank assembly with flush water supply device, and flush toilet with flush water tank assembly
WO2016145442A1 (en) * 2015-03-12 2016-09-15 Fluidmaster, Inc. Siphon activated valve
US10774512B2 (en) 2015-03-12 2020-09-15 Fluidmaster, Inc. Siphon activated valve
US11434631B2 (en) 2015-03-12 2022-09-06 Fluidmaster, Inc. Siphon activated valve
US20180142454A1 (en) * 2015-06-01 2018-05-24 Yaping Tang Bowl flushing control device of low tank type toilet
US10280602B2 (en) * 2015-06-01 2019-05-07 Xiamen R&J Precision Technology Co., Ltd. Bowl flushing control device of low tank type toilet
US20170211263A1 (en) * 2016-01-22 2017-07-27 Toto Ltd. Flush toilet
US10100503B2 (en) * 2016-01-22 2018-10-16 Toto Ltd. Flush toilet
US10480167B2 (en) * 2017-05-25 2019-11-19 Toto Ltd. Flush water supply apparatus
CN109469170A (en) * 2018-12-05 2019-03-15 厦门融技精密科技有限公司 A kind of toilet flushing device

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AS Assignment

Owner name: XIAMEN RUNNER INDUSTRIAL CORPORATION, CHINA

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:FU, YIZ-HOU;REEL/FRAME:029876/0367

Effective date: 20130201

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION