EP1426502A2 - Electronically controlled lavatory flush tank - Google Patents
Electronically controlled lavatory flush tank Download PDFInfo
- Publication number
- EP1426502A2 EP1426502A2 EP03026902A EP03026902A EP1426502A2 EP 1426502 A2 EP1426502 A2 EP 1426502A2 EP 03026902 A EP03026902 A EP 03026902A EP 03026902 A EP03026902 A EP 03026902A EP 1426502 A2 EP1426502 A2 EP 1426502A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- valve
- tank
- control circuit
- level
- vessel
- 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.)
- Withdrawn
Links
Images
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
- E03D1/02—High-level flushing systems
- E03D1/14—Cisterns discharging variable quantities of water also cisterns with bell siphons in combination with flushing valves
- E03D1/142—Cisterns discharging variable quantities of water also cisterns with bell siphons in combination with flushing valves in cisterns with flushing valves
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03D—WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR
- E03D5/00—Special constructions of flushing devices, e.g. closed flushing system
- E03D5/02—Special constructions of flushing devices, e.g. closed flushing system operated mechanically or hydraulically (or pneumatically) also details such as push buttons, levers and pull-card therefor
- E03D5/024—Operated hydraulically or pneumatically
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03D—WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR
- E03D5/00—Special constructions of flushing devices, e.g. closed flushing system
- E03D5/10—Special constructions of flushing devices, e.g. closed flushing system operated electrically, 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
Definitions
- the present invention relates to a lavatory flush tank with electronic fill and drain control.
- lavatory flush tanks normally comprise fill and drain valve control devices permitting various tank draining modes, and which include: single-drain devices for simply draining all the water from the tank; dual-drain devices for selectively draining all or only part of the water from the tank; and devices of both the above types enabling drain-off to be interrupted manually as required.
- Known dual-drain devices normally comprise a valve fitted to the bottom end of a movable member (which normally also acts as an overflow pipe) and associated with a float for delaying closure of the valve to allow all the water to be drained off. Conversely, to drain off only part of the water, an additional weight is connected reversibly to the valve to accelerate return of the valve to the closed position.
- a drawback of known devices of this type lies in reversible connection of the additional weight to the valve involving delicate, relatively complex mechanisms subject to malfunctioning and failure. Moreover, the mechanisms are normally located at the surface of the water in the tank, precisely where lime is known to form, and which tends to deposit on the mechanisms, thus resulting in damage and impaired operation. What is more, in the event the mechanism is damaged, the additional weight normally remains attached to the valve with no possibility of disconnecting it, so that only partial drain mode is operative (whereas, in the event of damage, full drain mode would be preferable).
- an electronically controlled lavatory flush tank comprising a hydraulic circuit fitted with at least one valve; said hydraulic circuit comprising a fill inlet connectable to a water mains, and a vessel having a drain hole; and the tank being characterized by comprising an electronic level sensor for detecting the level of a fluid in said vessel; an electronic control circuit; and at least one electromechanical actuator activated by said electronic control circuit for alternatively opening and closing said valve on the basis of the level detected by said level sensor.
- the invention has the advantage of simplifying the fill and/or drain valve control devices, and making them less subject to damage or failure. More specifically, the electromechanical actuators employed according to the invention are more reliable than commonly used all-mechanical devices.
- the level sensor comprises a number of detectors at respective separate predetermined levels.
- each of said detectors has an output connected to said electronic control circuit and supplying a respective level signal having a first value when said detector is immersed, and a second value when said detector is exposed.
- various water levels inside the vessel can be detected accurately to enable various partial drain programs. That is, as the water level in the vessel gets lower, the detectors are exposed successively, and the respective signals switch, so that drain-off can be arrested automatically by the control circuit on detecting a given user-selected level.
- Tank 1 comprises a hydraulic circuit 2 fitted with a fill valve 3 and a drain valve 4; an electronic level sensor 5; an electronic control circuit 6; and electromechanical fill and drain actuators 7 and 8 for activating fill valve 3 and drain valve 4 respectively.
- Hydraulic circuit 2 comprises a fill pipe 10 connectable to a water mains (not shown) by a fitting 11; and a flush water vessel 12 having a drain hole 13.
- Fill valve 3 is located along fill pipe 10, and drain valve 4 is inserted inside drain hole 13.
- drain valve 4 comprises a base 14 fitted integrally to a bottom wall of vessel 12; an outlet conduit 15; and a tubular body 16 inserted in axially sliding manner inside base 14 and normally set to close outlet conduit 15.
- a return spring 30 is connected between base 14 and tubular body 16, and tends to keep tubular body 16 in the rest position closing outlet conduit 15. More specifically, return spring 30 provides for restoring tubular body 16 to the closed position, following operation of drain valve 4.
- Level sensor 5 comprises a number of detectors 17 located at respective separate predetermined levels with respect to a bottom wall of vessel 12. Each of detectors 17 has an output 17a connected to control circuit 6 and supplying a respective level signal S. More specifically, level signals S each have a first value when respective detector 17 is immersed, and a second value when respective detector 17 is exposed. In the embodiment described herein, five detectors 17 are employed. A first detector 17, located substantially at the bottom wall of vessel 12, detects when vessel 12 is empty; a second detector 17 determines the water surface level when vessel 12 is full; and the other detectors 17 determine respective intermediate water levels in vessel 12.
- control circuit 6 comprises a numeric processing unit, and is fitted to the outside of a rear wall of vessel 12. In a variation not shown, control circuit 6 is sealed and housed inside vessel 12.
- Control circuit 6 has a number of control inputs, each connected to a respective control button 18; a stop input connected to a stop button 19; a first output 6a connected to the fill actuator 7 and supplying a first control signal C1; and a second output 6b connected to the drain actuator 8 and supplying a second control signal C2. More specifically, control signals C1, C2 are related to the level signals S from level sensors 17, and provide for alternatively enabling and disabling fill actuator 7 and drain actuator 8 respectively.
- a transformer 20 having inputs connected to a mains power line 21, has an output connected to control circuit 6 and supplying a drive voltage V p for activating actuators 7, 8.
- Fill actuator 7 is associated with fill valve 3, and comprises an electromagnetic circuit 22 for controlling fill valve 3.
- Drain actuator 8 cooperates with drain valve 4, and comprises a solenoid valve 23 and a hydraulically controlled piston device 24.
- Solenoid valve 23 is located between fitting 11 and a control inlet 24a of piston device 24, to which it is connected by a control pipe 25.
- Solenoid valve 23, which is normally closed, has a terminal connected to second output 6b of control circuit 6, and is therefore activated by control circuit 6 by means of second control signal C2.
- Piston device 24 comprises a support 26 carried by base 14 of drain valve 4; and an extendable arm 27 connected integrally to tubular body 16 of drain valve 4.
- Piston device 24 has at least one withdrawn operating configuration, in which drain valve 4 is closed, and one extended operating configuration, in which tubular body 16 is raised in opposition to return spring 30, and drain valve 4 is open. More specifically, when solenoid valve 23 is open, control inlet 24a of piston device 24 is connected by fitting 11 to the water mains, so that piston device 24 is in the extended configuration and drain valve 4 is open.
- control inlet 24a is disconnected from fitting 11 and the water mains, so that the water in control pipe 25 flows out through an outflow opening (not shown) of piston device 24, which assumes the withdrawn configuration and, cooperating with return spring 30, closes drain valve 4.
- Flush tank 1 operates as follows.
- control circuit 6 closes solenoid valve 23.
- Piston device 24 is thus disabled, by its control inlet 24a being disconnected from the water mains, so that tubular body 16 of drain valve 4, also with the aid of return spring 30, is restored to the closed position closing outlet conduit 15.
- control circuit 6 excites electromagnetic circuit 22 controlling fill valve 3, which is opened. More specifically, when full flushing is selected by the user, the control circuit intervenes upon switching of the level signal S from the detector located at the bottom wall of vessel 12.
- flushing is interrupted by the user pressing stop button 19 before the selected level is reached.
- Fill valve 3 is kept open until the surface of the water reaches the full level and switches the corresponding level signal S.
- Control circuit 6 preferably disables further flushing until vessel 12 is full.
- fill and drain actuators 7 and 8 are activated by electronic control circuit 6 on the basis of the level detected by level sensor 5, for alternatively opening and closing fill valve 3 and drain valve 4 respectively, and so control emptying of vessel 12.
- fill valve 3 or drain valve 4 and the relative control device may be conventional types. More specifically, fill valve 3 may be controlled by a float device.
- Flush buttons 18 may be replaced by other types of manual control devices, such as capacitive touch sensors; or an automatic photocell or ultrasound control device may be provided to detect the presence and subsequent departure of the user.
Landscapes
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Aviation & Aerospace Engineering (AREA)
- Mechanical Engineering (AREA)
- Sanitary Device For Flush Toilet (AREA)
Abstract
An electronically controlled lavatory flush tank (1)
includes a hydraulic circuit (2) fitted with at least one
valve (3; 4); and the hydraulic circuit (2) in turn has a
fill inlet (10, 11) connectable to a water mains, and a
vessel (12) having a drain hole (13). The tank (1)
includes an electronic level sensor (5) for detecting the
level of a fluid in the vessel (12); an electronic
control circuit (6); and at least one electromechanical
actuator (7; 8) activated by the electronic control
circuit (6) for alternatively opening and closing the
valve (3; 4) on the basis of the level detected by the
level sensor (5).
Description
The present invention relates to a lavatory flush
tank with electronic fill and drain control.
As is known, lavatory flush tanks normally comprise
fill and drain valve control devices permitting various
tank draining modes, and which include: single-drain
devices for simply draining all the water from the tank;
dual-drain devices for selectively draining all or only
part of the water from the tank; and devices of both the
above types enabling drain-off to be interrupted manually
as required.
Known dual-drain devices normally comprise a valve
fitted to the bottom end of a movable member (which
normally also acts as an overflow pipe) and associated
with a float for delaying closure of the valve to allow
all the water to be drained off. Conversely, to drain off
only part of the water, an additional weight is connected
reversibly to the valve to accelerate return of the valve
to the closed position.
A drawback of known devices of this type lies in
reversible connection of the additional weight to the
valve involving delicate, relatively complex mechanisms
subject to malfunctioning and failure. Moreover, the
mechanisms are normally located at the surface of the
water in the tank, precisely where lime is known to form,
and which tends to deposit on the mechanisms, thus
resulting in damage and impaired operation. What is more,
in the event the mechanism is damaged, the additional
weight normally remains attached to the valve with no
possibility of disconnecting it, so that only partial
drain mode is operative (whereas, in the event of damage,
full drain mode would be preferable).
It is an object of the present invention to provide
a flush tank designed to eliminate the aforementioned
drawbacks, and which is also cheap and easy to produce.
According to the present invention, there is
provided an electronically controlled lavatory flush tank
comprising a hydraulic circuit fitted with at least one
valve; said hydraulic circuit comprising a fill inlet
connectable to a water mains, and a vessel having a drain
hole; and the tank being characterized by comprising an
electronic level sensor for detecting the level of a
fluid in said vessel; an electronic control circuit; and
at least one electromechanical actuator activated by said
electronic control circuit for alternatively opening and
closing said valve on the basis of the level detected by
said level sensor.
The invention has the advantage of simplifying the
fill and/or drain valve control devices, and making them
less subject to damage or failure. More specifically, the
electromechanical actuators employed according to the
invention are more reliable than commonly used all-mechanical
devices.
According to a further aspect of the invention, the
level sensor comprises a number of detectors at
respective separate predetermined levels.
Moreover, each of said detectors has an output
connected to said electronic control circuit and
supplying a respective level signal having a first value
when said detector is immersed, and a second value when
said detector is exposed.
As such, various water levels inside the vessel can
be detected accurately to enable various partial drain
programs. That is, as the water level in the vessel gets
lower, the detectors are exposed successively, and the
respective signals switch, so that drain-off can be
arrested automatically by the control circuit on
detecting a given user-selected level.
A preferred, non-limiting embodiment of the present
invention will be described by way of example with
reference to the accompanying drawing, which shows a
schematic front cross section of a lavatory flush tank in
accordance with the present invention.
Level sensor 5 comprises a number of detectors 17
located at respective separate predetermined levels with
respect to a bottom wall of vessel 12. Each of detectors
17 has an output 17a connected to control circuit 6 and
supplying a respective level signal S. More specifically,
level signals S each have a first value when respective
detector 17 is immersed, and a second value when
respective detector 17 is exposed. In the embodiment
described herein, five detectors 17 are employed. A first
detector 17, located substantially at the bottom wall of
vessel 12, detects when vessel 12 is empty; a second
detector 17 determines the water surface level when
vessel 12 is full; and the other detectors 17 determine
respective intermediate water levels in vessel 12.
In a preferred embodiment of the invention, control
circuit 6 comprises a numeric processing unit, and is
fitted to the outside of a rear wall of vessel 12. In a
variation not shown, control circuit 6 is sealed and
housed inside vessel 12.
A transformer 20, having inputs connected to a mains
power line 21, has an output connected to control circuit
6 and supplying a drive voltage Vp for activating
actuators 7, 8.
Flush tank 1 operates as follows.
Initially, vessel 12 is full, so that detectors 17
are all immersed, and control circuit 6, by means of
control signals C1 and C2, closes both fill valve 3 and
drain valve 4. By pressing one of buttons 18, the user
selects a flush water quantity, which corresponds to a
respective fall in the surface level inside vessel 12;
and control circuit 6 opens solenoid valve 23, and
consequently drain valve 4, while fill valve 3 remains
closed. As the water level inside vessel 12 falls,
detectors 17 are exposed successively, and the respective
level signals S switch.
As the user-selected level is reached and the level
signal S from the corresponding detector 17 switches,
control circuit 6 closes solenoid valve 23. Piston device
24 is thus disabled, by its control inlet 24a being
disconnected from the water mains, so that tubular body
16 of drain valve 4, also with the aid of return spring
30, is restored to the closed position closing outlet
conduit 15. At the same time, control circuit 6 excites
electromagnetic circuit 22 controlling fill valve 3,
which is opened. More specifically, when full flushing is
selected by the user, the control circuit intervenes upon
switching of the level signal S from the detector located
at the bottom wall of vessel 12.
Alternatively, flushing is interrupted by the user
pressing stop button 19 before the selected level is
reached.
In other words, fill and drain actuators 7 and 8 are
activated by electronic control circuit 6 on the basis of
the level detected by level sensor 5, for alternatively
opening and closing fill valve 3 and drain valve 4
respectively, and so control emptying of vessel 12.
Clearly, changes may be made to the tank as
described herein without, however, departing from the
scope of the present invention.
In particular, fill valve 3 or drain valve 4 and the
relative control device may be conventional types. More
specifically, fill valve 3 may be controlled by a float
device.
Claims (10)
- An electronically controlled lavatory flush tank comprising a hydraulic circuit (2) fitted with at least one valve (3; 4); said hydraulic circuit (2) comprising a fill inlet (10, 11) connectable to a water mains, and a vessel (12) having a drain hole (13); and the tank being characterized by comprising an electronic level sensor (5) for detecting the level of a fluid in said vessel (12); an electronic control circuit (6); and at least one electromechanical actuator (7; 8) activated by said electronic control circuit (6) for alternatively opening and closing said valve (3; 4) on the basis of the level detected by said electronic level sensor (5).
- A tank as claimed in Claim 1, characterized in that said level sensor (5) comprises a number of detectors (17) located at respective separate predetermined levels.
- A tank as claimed in Claim 2, characterized in that each of said detectors (17) has a respective output connected to said electronic control circuit (6) and supplying a respective level signal (S) having a first value when said detector (17) is immersed, and a second value when said detector (17) is exposed.
- A tank as claimed in any one of the foregoing Claims, characterized in that said valve (4) is a drain valve, and in that said electromechanical actuator (8) comprises a solenoid valve (23) activated by said electronic control circuit (6) on the basis of the level detected by said electronic level sensor (5); and a hydraulically controlled piston device (24) associated with a closing member (16) for closing said valve (4), and having a control inlet (24a) connectable selectively to said fill inlet (10, 11) of said hydraulic circuit (2) by said solenoid valve (23).
- A tank as claimed in Claim 4, characterized in that said piston device (24) comprises a support (26) integral with said vessel (12), and an extendable arm (27) connected integrally to said closing member (16); said piston device (24) having at least a first operating configuration, in which said valve (4) is closed, and a second operating configuration, in which said valve (4) is open.
- A tank as claimed in Claim 5, characterized in that said piston device (24) is selectively set to said first operating configuration when said control inlet (24a) is disconnected from said fill inlet (10, 11), and to said second operating configuration when said control inlet (24a) is connected to said fill inlet (10, 11).
- A tank as claimed in any one of Claims 4 to 6, characterized by comprising elastic return means (30) fitted to said closing member (16) to keep said closing member (16) in a closed position closing said valve (4).
- A tank as claimed in Claim 7, characterized in that said elastic return means (30) comprise a spring connected to said closing member (16) and to a base (14) of said valve (4).
- A tank as claimed in any one of Claims 1 to 3, characterized in that said valve is a fill valve (3), and in that said electromechanical actuator (7) comprises an electromagnetic circuit (22) controlling said valve (3).
- A tank as claimed in any one of the foregoing Claims, characterized in that said electronic control circuit (6) comprises a numeric processing unit.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ITMI20022547 ITMI20022547A1 (en) | 2002-11-29 | 2002-11-29 | ELECTRONICALLY CONTROLLED RINSE BOX FOR |
| ITMI20022547 | 2002-11-29 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1426502A2 true EP1426502A2 (en) | 2004-06-09 |
| EP1426502A3 EP1426502A3 (en) | 2004-09-29 |
Family
ID=32310166
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP03026902A Withdrawn EP1426502A3 (en) | 2002-11-29 | 2003-11-24 | Electronically controlled lavatory flush tank |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP1426502A3 (en) |
| IT (1) | ITMI20022547A1 (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL1032567C2 (en) * | 2006-09-25 | 2008-03-26 | Ecoplay Int Bv | Device for draining water from a storage tank. |
| FR2916773A1 (en) * | 2007-05-31 | 2008-12-05 | Presto Robinets Sa | Flush tank controlling device, has electronic detection device controlling solenoid valve interposed between water inlet and jack, where force required to lift flap gate of flush tank is provided by pressure of water supply network |
| DE102008025904A1 (en) * | 2008-05-29 | 2009-12-03 | GROHEDAL Sanitärsysteme GmbH & Co. KG | Cistern with inspection opening |
| ES2330398A1 (en) * | 2007-08-22 | 2009-12-09 | Les Robinets Presto S.A. | Control device of a tank deposit (Machine-translation by Google Translate, not legally binding) |
| WO2010007237A2 (en) * | 2008-06-25 | 2010-01-21 | Hydrelis | Device for making a water flushing mechanism safe |
| US9657471B2 (en) | 2012-11-02 | 2017-05-23 | Kohler Co. | Touchless flushing systems and methods |
| WO2018199861A3 (en) * | 2016-12-20 | 2019-01-03 | Eczacibaşi Yapi Gereçleri̇ Sanayi̇ Ve Ti̇caret Anoni̇m Şi̇rketi̇ | An electronically controlled flushing system and a method of operation for the same |
| WO2018199866A3 (en) * | 2016-12-20 | 2019-02-07 | Eczacibaşi Yapi Gereçleri̇ Sanayi̇ Ve Ti̇caret Anoni̇m Şi̇rketi̇ | An electronically controlled flushing system |
| IT202100011069A1 (en) * | 2021-04-30 | 2022-10-30 | Oli Sist Sanitarios S A | FLUSH CISTERN WITH A CONTROL SYSTEM BASED ON LEVEL MEASUREMENTS |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2744262A (en) * | 1953-05-27 | 1956-05-08 | Ritter Margaretta Boyd | Valve operating mechanism |
| US3088122A (en) * | 1960-07-22 | 1963-05-07 | Glen L Pore | Flushing tank actuator |
| FR2642778A3 (en) * | 1989-01-19 | 1990-08-10 | Dore Pierre | Water flush fittings |
| FR2770547A1 (en) * | 1997-11-03 | 1999-05-07 | Wirquin Plastiques Sa | Electrical device for controlling variable quantity WC flushing |
| DE19962404A1 (en) * | 1999-12-22 | 2001-07-05 | Bartsch Elektrotechnik Gmbh | Electronically controlled toilet flushing system has water tank, feed line to tank with shutoff element, output line to toilet device, membrane valve shutoff device in output line, sensor element |
| EP1156166A2 (en) * | 2000-05-18 | 2001-11-21 | Geberit Technik Ag | Cistern for a toilet and method for actuation of such a cistern |
-
2002
- 2002-11-29 IT ITMI20022547 patent/ITMI20022547A1/en unknown
-
2003
- 2003-11-24 EP EP03026902A patent/EP1426502A3/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2744262A (en) * | 1953-05-27 | 1956-05-08 | Ritter Margaretta Boyd | Valve operating mechanism |
| US3088122A (en) * | 1960-07-22 | 1963-05-07 | Glen L Pore | Flushing tank actuator |
| FR2642778A3 (en) * | 1989-01-19 | 1990-08-10 | Dore Pierre | Water flush fittings |
| FR2770547A1 (en) * | 1997-11-03 | 1999-05-07 | Wirquin Plastiques Sa | Electrical device for controlling variable quantity WC flushing |
| DE19962404A1 (en) * | 1999-12-22 | 2001-07-05 | Bartsch Elektrotechnik Gmbh | Electronically controlled toilet flushing system has water tank, feed line to tank with shutoff element, output line to toilet device, membrane valve shutoff device in output line, sensor element |
| EP1156166A2 (en) * | 2000-05-18 | 2001-11-21 | Geberit Technik Ag | Cistern for a toilet and method for actuation of such a cistern |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008039063A1 (en) * | 2006-09-25 | 2008-04-03 | Ecoplay International B.V. | Device and system for draining water from a storage tank |
| NL1032567C2 (en) * | 2006-09-25 | 2008-03-26 | Ecoplay Int Bv | Device for draining water from a storage tank. |
| FR2916773A1 (en) * | 2007-05-31 | 2008-12-05 | Presto Robinets Sa | Flush tank controlling device, has electronic detection device controlling solenoid valve interposed between water inlet and jack, where force required to lift flap gate of flush tank is provided by pressure of water supply network |
| ES2330398A1 (en) * | 2007-08-22 | 2009-12-09 | Les Robinets Presto S.A. | Control device of a tank deposit (Machine-translation by Google Translate, not legally binding) |
| EP2128350B1 (en) * | 2008-05-29 | 2021-08-04 | GROHEDAL Sanitärsysteme GmbH | Cistern with maintenance opening |
| DE102008025904B4 (en) * | 2008-05-29 | 2013-08-08 | GROHEDAL Sanitärsysteme GmbH | Cistern with inspection opening |
| DE102008025904A1 (en) * | 2008-05-29 | 2009-12-03 | GROHEDAL Sanitärsysteme GmbH & Co. KG | Cistern with inspection opening |
| WO2010007237A2 (en) * | 2008-06-25 | 2010-01-21 | Hydrelis | Device for making a water flushing mechanism safe |
| WO2010007237A3 (en) * | 2008-06-25 | 2010-03-11 | Hydrelis | Flushing mechanism comprising a safety device |
| US9657471B2 (en) | 2012-11-02 | 2017-05-23 | Kohler Co. | Touchless flushing systems and methods |
| US10851532B2 (en) | 2012-11-02 | 2020-12-01 | Kohler Co. | Touchless flushing systems and methods |
| US11560702B2 (en) | 2012-11-02 | 2023-01-24 | Kohler Co. | Touchless flushing systems and methods |
| WO2018199861A3 (en) * | 2016-12-20 | 2019-01-03 | Eczacibaşi Yapi Gereçleri̇ Sanayi̇ Ve Ti̇caret Anoni̇m Şi̇rketi̇ | An electronically controlled flushing system and a method of operation for the same |
| WO2018199866A3 (en) * | 2016-12-20 | 2019-02-07 | Eczacibaşi Yapi Gereçleri̇ Sanayi̇ Ve Ti̇caret Anoni̇m Şi̇rketi̇ | An electronically controlled flushing system |
| IT202100011069A1 (en) * | 2021-04-30 | 2022-10-30 | Oli Sist Sanitarios S A | FLUSH CISTERN WITH A CONTROL SYSTEM BASED ON LEVEL MEASUREMENTS |
| EP4083339A1 (en) * | 2021-04-30 | 2022-11-02 | Oli - Sistemas Sanitarios, S.A. | Flushing tank with a control system based on level measurements |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1426502A3 (en) | 2004-09-29 |
| ITMI20022547A1 (en) | 2004-05-30 |
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