Flush toilet

Patent metadata

Field	Value
Publication number	US-2022220717-A1
Application number	US-202017606927-A
Country	US
Kind code	A1
Filing date	Apr 28, 2020
Priority date	Apr 29, 2019
Publication date	Jul 14, 2022
Grant date	—

Abstract

A siphonic flush toilet system, the system comprising a bowl, a tank, and a rim flush valve assembly and/or a jet flush valve assembly, the tank comprises an interior space configured to hold fluid; and a height, a width, and a depth, based on a tank exterior, wherein the height is from about 17.0 inches to about 29.0 inches; the width is from about 10.5 inches to about 18.5 inches; and he depth is from about 3.10 inches to about 3.60 inches; the flush valve assembly is positioned in the interior space of the tank; and the tank is configured to be positioned within a bathroom wall cavity upon installation of the toilet system.

First claim

1 . A siphonic flush toilet system, the system comprising a bowl, a tank, and a rim flush valve assembly and/or a jet flush valve assembly, wherein
the bowl comprises
a rim extending at least partially around a bowl upper perimeter;
an interior surface and an exterior surface;
a wall defining the interior surface and exterior surface; and
a sump area;
the tank comprises
an interior space configured to hold fluid; and
a height, a width, and a depth, based on a tank exterior, wherein the height is from about 17.0 inches to about 29.0 inches; the width is from about 10.5 inches to about 18.5 inches; and he depth is from about 3.10 inches to about 3.60 inches; and
the flush valve assembly comprises
a flush valve body extending from a flush valve inlet to a flush valve outlet;
a flapper cover having a top face and a bottom face and a front and a back; and
a flush actuator comprising a lift rod;
wherein the sump area is configured to be in fluid communication a trapway inlet, the flush valve assembly is positioned in the interior space of the tank, the bottom face of the flapper cover is configured to enclose the flush valve inlet, and the lift rod is coupled to the top face of the flapper cover and is configured to lift the flapper cover to open the flush valve.

2 . The flush toilet system according to claim 1 , comprising a conduit fluidly coupled to the flush valve outlet at the tank interior and extending through a tank bottom floor.

3 . The flush toilet system according to claim 1 , comprising
a trapway comprising a weir, a trapway inlet, and a trapway outlet; a rim flush valve assembly comprising a rim flush valve body extending from a rim flush valve inlet to a rim flush valve outlet; a jet flush valve assembly comprising a jet flush valve body extending from a jet flush valve inlet to a jet flush valve outlet; a jet fluid pathway extending from the jet flush valve outlet to a jet outlet port; a jet channel disposed within the bowl wall and extending from a jet inlet port to the jet outlet port; and a rim channel disposed within the rim and extending from a rim inlet port to a rim outlet port; wherein the trapway is in fluid communication with the bowl sump area, the rim inlet port is in fluid communication with the rim flush valve outlet and the rim outlet port is in fluid communication with the bowl interior surface, and the jet inlet port is in fluid communication with the jet flush valve outlet and the jet outlet port is configured to discharge fluid to the bowl sump area.

4 . The flush toilet system according to claim 3 , comprising a rim conduit and a jet conduit, wherein the rim conduit is fluidly coupled to the rim flush valve outlet and the rim inlet port, and the jet conduit is fluidly coupled to the jet flush valve outlet and the jet inlet port.

5 . The flush toilet system according to claim 2 , comprising an overflow tube coupled to and in fluid communication with the conduit.

6 . The flush toilet system according to claim 5 , wherein the overflow tube is coupled to the conduit at a tank exterior.

7 . The flush toilet system according to claim 3 , wherein the rim flush valve inlet has a rim flush valve inlet area and the jet flush valve has a jet flush valve inlet area, and wherein the rim flush valve inlet area is from about 60% to about 90% of the size of the jet flush valve inlet area.

8 . The flush toilet system according to claim 3 , wherein the rim flush valve inlet is positioned from about 4 inches to about 11 inches above the jet flush valve inlet.

9 . The flush toilet system according to claim 1 , wherein the flapper cover is configured to lift in a peeling motion from the flapper cover front towards the flapper cover back, and wherein the lift rod is configured to lift the flapper cover to partially open the flush valve; to fully open the flush valve, and to dispose the flapper cover in a position wherein the bottom face is substantially parallel with the flush valve inlet when the flush valve is fully open.

10 . The flush toilet system according to claim 1 , wherein the flapper cover comprises a flexible portion and one or more rigid portions.

11 . The flush toilet system according to claim 1 , wherein the lift rod is coupled to the top face of the flapper cover via a multi-arm linkage comprising a pivot arm and one or more slotted elements, and wherein the lift rod is substantially perpendicular to the flapper cover face, and is disposed in a tubular body guide element, wherein the tubular body guide element is coupled to the flush valve body.

12 . The flush toilet system according to claim 1 , wherein the flush valve assembly comprises a first stop element positioned above the flush valve inlet and second stop element coupled to the flapper cover top face, wherein the first stop element is configured to engage the second stop element when the flapper cover is lifted.

13 . The flush toilet system according to claim 1 , wherein the flush valve body inlet is elliptic.

14 . The flush toilet system according to claim 1 , wherein the flush valve body comprises a lead-in lip extending around at least about 75% of the flush valve inlet.

15 . The flush toilet system according to claim 1 , wherein the flush valve inlet is radiused and is downwardly-tapered.

16 . The flush toilet system according to claim 2 , wherein the toilet tank and the trapway outlet are configured to be positioned within a bathroom wall cavity upon installation of the toilet system.

17 . The flush toilet system according to claim 1 , wherein the tank is configured to deliver about 4.8 liters per flush cycle.

18 . The flush toilet system according to claim 3 , comprising a jet fluid pathway extending from the jet flush valve outlet to the jet outlet port, and wherein, once primed, the jet fluid pathway is capable of remaining primed with fluid before actuation of and after completion of a flush cycle.

19 . The flush toilet system according to claim 1 , wherein the bowl sump area comprises a jet trap defined by the interior surface of the bowl, the jet trap having an jet trap inlet end and a jet trap outlet end, wherein the jet trap inlet end is configured to receive fluid from the jet outlet port and/or the interior surface of the bowl and the jet trap outlet end is configured to be in fluid communication with the trapway inlet, and wherein the jet trap comprises a seal depth.

20 . A toilet tank assembly for a siphonic flush toilet system, according to claim 1 .

21 . The toilet tank assembly according to claim 20 , comprising an overflow tube coupled to and in fluid communication with a conduit, wherein the overflow tube is configured to hold a cleaning tablet.

Assignees

• As America Inc

Inventors

• Kappus Steven D
• Heydari Behnam
• Grover David
• Kolekar Nitin S
• Smith Benjamin

Classifications

• E03D5/092

  the flushing element, e.g. siphon bell, being actuated through a lever · CPC title

• E03D5/10

  operated electrically (E03D5/01, E03D5/12 take precedence), {e.g. by a photo-cell; also combined with devices for opening or closing shutters in the bowl outlet and/or with devices for raising/or lowering seat and cover and/or for swiveling the bowl} · CPC title

• E03D1/34

  Flushing valves for outlets; Arrangement of outlet valves · CPC title

• E03D5/105

  touchless, e.g. using sensors · CPC title

• E03D2201/30

  Water injection in siphon for enhancing flushing · CPC title