Abstract: A toilet seat apparatus according to an embodiment includes: a toilet seat on which a user sits; a light emitting unit including a light emitting element that emits light; a light receiving unit including a light receiving element that receives light; and a control unit that controls energization of the light emitting element and application of voltage to the light receiving element, in which the control unit performs light reception control including transmitting a control instruction to open an electronic shutter to the light receiving element and energizing the light emitting element so as to permit reception of the reflected light from feces, and performs control of setting an interval from a start of execution of one light reception control to execution of light reception control subsequent to the one light reception control, to 0.2 milliseconds or more.

Abstract: A flameless electric candle having a fan-driven scent diffuser. The candle includes a body portion having a translucent portion and a generally elongated cylindrical shape and housing therein a light emitting device configured to permit its emitted light to be partially visually discernible through the translucent portion. There is below the body portion, a base portion that includes a PCB, a switch, a light emitting device, a power source, a fan oriented to force air in a downwards direction away from the body portion, a pad configured to receive upon a surface thereof a fragrance or scent, openings in a wall of the base portion to allow the forced air scented by the fragrance to escape the base portion. The switch is selectable among a first mode in which the LED and fan are both on, an off mode both the LED and fan are off, and a second mode wherein only one of the LED or fan is on.

Abstract: The invention describes a measuring system for the continuous non-invasive determination of blood pressure at one or more fingers. The fingers chosen for measurement and the adjacent parts of the palm rest on a supporting surface of a housing, which has the shape of a computer mouse. Inside the housing of the “CNAP Mouse”, i.e. underneath the supporting surface for the hand, the pressure generating system is located. The finger sensors are mounted on the supporting surface for the hand. The forearm and the back of the hand are left free and may be used to place intra-venous or intra-arterial access elements. Since the hand will rest on the supporting surface motion artefacts are largely avoided. Tilting or turning of the sensors is hardly possible since the fit of the sensors and thus the coupling of light and pressure are optimized.

Abstract: A computing system having a memory and a processor configured to process flow data packets (FDPs) collected from a set of sensor devices, each installed in a toilet that collects a flow data packet (FDP) in response to a detected event, wherein each FDP includes a sequence of flow rate values collected over the course of the detected event. The processor is configured to: issue a first type of alert in response to a number of flow rate values in a current FDP being above a threshold; issue a second type of alert in response to a detected abnormal behavior of the current FDP relative to previously collected FDPs for an associated toilet; and issue a third type of alert based on a water usage for the toilet, wherein the water usage is based on calculated flow rate for a toilet determined from at least one FDP.

Abstract: A toilet seat with handles is disclosed. The handles include light transmitters and light receivers. The light transmitters and receivers may be used to determine blood oxygen saturation levels and heart rate of a toilet seat user. Ultrasonic transmitters and receivers in the toilet seat handle are also disclosed for determining bone density of a toilet seat user. The handles may be retractable and may include UV sanitation.

Abstract: A device for determining physiological data through analysis of human excrement in a toilet using at least one indicator and/or sensor, and a method for determining physiological data by analysis of human excrement in a toilet by measurement of urine and/or stool values, in order to achieve maximally universal use of the device, including in a wide variety of toilet designs, with reasonable design effort and manageable costs. A measurement system, in which an indicator or sensor can be brought into a measurement position, in which sufficient contact with the urine or stool to be examined occurs via an arm for each measurement, wherein the indicator or sensor is/are designed as (an) independent unit(s), and by a corresponding method in which a plurality of previously determined values are measured and then processed further and forwarded as applicable.

Abstract: A system and method for analyzing bio-fluid constituents and properties in a bio-fluid sample, wherein the system comprises a bio-fluid collection apparatus, a bio-fluid testing/analysis apparatus, and a reporting apparatus.

Abstract: A smart furniture includes a furniture article designed for being used by a user and a smart system which includes a detection module built-in with the furniture article for detecting health data of the user when the furniture article is used. In particular, the detection module includes a plurality of sensors located at a user supporting surface of the furniture article for collecting health data of the user. The health data of the user is then analyzed to ensure the user to use the furniture article in a proper way.

Abstract: A test strip analyser is provided. The test strip analyser includes a frame, a test control module and an optical system. The test control module is disposed in the frame and includes a test strip carrier of a plurality of test strip carriers and a sample container of a plurality of sample containers. The test strip carrier is disposed on the frame and adapted to hold a test strip. The sample container is adapted to contain a sample. The optical system is disposed above the frame and the test control module and includes a light sensor and controller. The light sensor is configured to capture an image of the test strip. The controller is connected to the light sensor to control the light sensor, and the light sensor feedbacks the image to the controller. In addition, an analysing method using the same is also provided.

Abstract: Provided is a biomonitoring device that measures a parameter of a material expelled during use of a toilet by a user. Also provided is a biomonitoring mirror device that identifies a user, detects a febrile illness in a user, dispenses medications/supplements, connects to electrical device accessories in the bathroom, and provides an interactive user interface. Additionally provided is a system for measuring a parameter of a material expelled during use of a toilet by a user. Further provided is a method of determining a physiological parameter of a user.

Abstract: An in-toilet leak detector is disclosed, as are communication systems for reporting toilet leaks. The leak detector comprises an inlet that receives water from the toilet's fill tube and diverts it through a flow tube. A capacitive sensor is located between the inlet and an opening of the flow tube from which water flows into the overflow tube of the toilet tank. A housing is connected to the flow tube and the inlet and contains a controller and other electronics, including one or more transceivers. The leak detector measures the duration of water flow and establishes an alert if the water flow is shorter or longer in duration than a calibrated normal duration. The transceivers connect the leak detector to a computer network, and leak alerts are communicated to a server or servers so that they can be forwarded directly to those responsible for fixing the toilets.

Abstract: This invention discloses an excreta occult blood inspection method and the apparatus thereof. The inspection method comprises the following steps. At least one light source is provided to emit at least one light to illuminate excreta to produce at least one specimen light. At least one photo-sensitive unit is provided to receive the specimen light and generate a detected data. An analysis processor is provided to receive and analyze the detected data to produce an analysis data. Above-mentioned method and apparatus can make excreta occult blood inspection become efficient and convenient.

Abstract: This document describes assessment of human physiological systems. Various noninvasive sensors can be used to detect vitals and other parameters and combined with mathematical models to assess the functional state of physiological systems. Conventional techniques can use invasive sensors to monitor cardiac pressures and volumes, along with pressure transit to quantify cardiovascular health. While known to be effective these invasive techniques often require surgery and are resource intensive limiting their use to cases where the risks and costs are of clear immediate benefit. In contrast, noninvasive health monitors present little if any risk and are easy to use. Further, the techniques described herein can determine trends in a person's cardiovascular health. With these trends, a person can know if the effort they expend to improve heart health actually makes a difference. Further, negative trends can be found that can spur people to improve their health or get medical attention.

Abstract: A toilet night light is provided. The toilet night light includes a housing. A clip is attached to the housing and is sized to releasably attach to a toilet bowl suspending the toilet night light under the toilet seat. A light is disposed within the housing. The light is directed to at least an inside portion of the toilet bowl to illuminate the inside of the toilet bowl. A power source, such as a battery is electrically connected to power the light. The present invention further include a switch operatively connected to the light and is activated to turn the light on and off.

Abstract: A toilet seat cover with a full-directional night lamp includes an upper lid, a seat and two supports. A cylindrical night lamp is locked on the upper lid or locked between two seat shaft sleeves at two sides of the seat. The night lamp comprises at least one electric body and at least one light-pervious tube. The electric body has at least one end thereof defined as a light source end. The light source end of the electric body is axially sleeved on and fixed to the light-pervious tube. The whole night lamp can be detachably mounted on the upper lid or locked between the two seat shaft sleeves at two sides of the seat, thereby attaining a full 360 degree emission of light and allowing the lighting emission to be free of the operation state of the toilet seat cover.

Abstract: A flush toilet has a reservoir tank, a toilet main unit, a water supply apparatus, a water discharge apparatus, and a control device for controlling flushing of the bowl portion of the toilet main unit; wherein this control device includes a time measurement device for measuring the time after the water discharge apparatus has been driven for a predetermined time to discharge flush water, until the water level rises from a dead water level inside the reservoir tank with the water discharge apparatus in an off state to a predetermined stopped water level prior to start of flush; and the driving time of the water discharge apparatus responsive to pressure losses in the toilet main unit is adjusted by comparing the water level rise time measured by the time measurement device with the water level rise time in a standard toilet.

Abstract: An adapter includes an interface module that receives signals from a first sensor that indicate a first fill status of a holding tank. A control module of the adapter generates a control signal based on the first fill status. The toilet is at least partially controlled by a toilet control module that restricts a flush capability of the toilet based on the control signal. An isolation module of the adapter isolates the interface module and the control module from at least one of voltage and current fluctuations that are external to the adapter.

Abstract: The present invention relates to a device for housing a dye tablet that is capable of acting as a visual warning device to liquid overflow in liquid containers, particularly toilet cisterns. The device may be affixed to the overflow pipe by means of a clip attachment or through integration with the overflow pipe upon creation. The device contains apertures to allow liquid to enter the compartment housing the dye tablet whereby the dye particles become immersed in the liquid. The highly colourised liquid is highly noticeable as it exits the overflow pipe and thus gives warning of a system malfunction.

Abstract: An odor eliminating apparatus for eliminating odorous compounds from a toilet bowl includes a housing with an extension disposed inside the bowl above the headspace of the water. A fan establishes an air flow through the housing to exhaust gases from the bowl. A filter eliminates the odorous compounds and optionally refreshes the air. The apparatus may be portable so that it can be installed onto and removed from the bowl as desired. Speakers in the housing are used to play audio clips when a person is detected.

Abstract: Various systems and methods of controlling the flow of water from a fill valve in a toilet tank to a toilet bowl of a toilet using a bowl fill valve are provided. An inlet of the bowl fill valve is coupled to a bowl fill outlet of the fill valve and the outlet of the bowl fill valve is channeled to the toilet bowl. In illustrative embodiment, a method is provided comprising the steps of determining when the toilet tank has been substantially drained of water during a flush cycle, and opening the bowl fill valve for a predefined period of time after the toilet tank has been substantially drained of water to fill the toilet bowl of the toilet with water. The predefined period of time is less than a total time of the flush cycle.

Abstract: An auxiliary actuator for a toilet fill valve comprises a plunger oriented under an arm of the toilet fill valve to lift the arm to close the toilet fill valve when the plunger is in a raised position. A spring or hydraulic mechanism urges the plunger into the raised position. A solenoid mechanism is normally de-energized and engages a latching mechanism of the plunger when the plunger is in a lowered position. An electronic sensing circuit has at least one sensor and a power source. The electronic sensing circuit is electrically connected with the solenoid mechanism to energize the solenoid mechanism upon detection of a fault condition based on the input of the at least one sensor. Fault conditions may include a flush valve leak, a stuck-open flush valve, a plugged toilet, and a leaking fill valve.

Abstract: A control system for a flush toilet includes a water delivery device for delivering a source of flush water to a bowl. The control system includes a controller and a user interface. The controller is operative to control the toilet through a flush sequence in a first mode and a second mode. In the first mode, the controller opens the water delivery device to deliver a predetermined amount of water to the bowl. In the second mode, the controller opens the water delivery device to deliver a user adjustable amount of water to the bowl. The user interface is in communication with the controller for selecting between the first mode and the second mode. Where the toilet is a macerator toilet, the controller monitors current draw unit when the current draw satisfies a predetermined current condition. The controller may operate in a normal mode and a lockout mode.

Abstract: An indicator that the cartridge is draining slowly is placed on top of the cartridge. When slow draining causes urine to pool on top of the cartridge, liquid enters a float housing, causing an indicator to change color. The indicator is visible through a lens in a diverter. The indicator may be a disk that undergoes a chemical reaction to change color or a float that flips over to reveal a side having a different color. When the cartridge is operating properly, the float displays a first color. Flipping of the float reveals a second color to the observer. A color change indicates, such as by signaling, that the cartridge needs to be replaced.

Abstract: An apparatus and method is provided to reduce cross-talk between multiple capacitive sensors used in an electronic toilet and between multiple capacitive sensors used in an electronic faucet and an electronic soap dispenser.

Abstract: Water is conserved by detecting unintended inflow of water into the tank of a flush toilet. A sensor acoustically and/or vibrationally coupled to the flush toilet detects sound and/or vibration generated due to turbulence in water flowing into the toilet tank. An electronic circuit analyzes the sensor output to detect cyclical water inflow not intended by a user. The electronic circuit generates an alert such as an audible and/or visual indication that the toilet is leaking.

Abstract: An inspection device is provided to monitor hygienic conditions of a space unit for a vehicle. The vehicle includes, but is not limited to, an inspection device, the use of an inspection device, and a method to assure hygienic conditions in a vehicle. In order to optimize assuring hygienic conditions in interior spaces on board a vehicle an inspection device is provided that includes, but is not limited to, an optical detection device. The optical detection device generates electromagnetic radiation to irradiate a surface to be cleaned, and renders visible soiling that, in visible light, is invisible to the human eye. The optical detection device is permanently installable on an interior lining.

Abstract: Embodiments of the invention include devices for reliably indicating when the water level in a toilet tank rises to the top of the overflow tube. Indicators use the presence of water in the overflow to provide for visual, olfactory and/or auditory indication of the malfunction. Features of the invention provide for a safe, inexpensive and reliable device for detecting toilet malfunction. Indicators are housed in a device that is positioned to intercept overflow water passing from the toilet tank to the toilet bowl. The presence of water in the device housing is used to release indicators into the toilet bowl water or into the air. Improvements are provided that eliminate false positive indications and prevent inadvertent damage to the toilet.

Abstract: Methods for communicating with an automatic flush valve device. The automatic flush device having a variety of operational modes which can be selected from to control the operation of the device. The communication from the automatic flush device providing a user with information regarding the status of the flush valve device.

Abstract: A system and method for conditionally interfering with the operation of a conventional toilet tank fill valve prevents toilet overflow and conserves water. A single self-contained apparatus, located completely within the toilet tank, detects and prevents a toilet overflow and/or conserves water by conditionally interfering with or overriding the normal operation of a toilet tank fill valve to prevent a further flush. Exemplary illustrative non-limiting steps include removing the toilet tank lid to provide access to said toilet tank fill valve within the tank, manually snapping an assembly onto said fill valve protective cap, and automatically and conditionally actuating said assembly to cause the assembly to selectively interfere with or override the operation of said toilet tank fill valve. An exemplary illustrative non-limiting device comprises an attaching structure for manual attachment to said fill valve cap, and a control mechanism supported by said attaching structure.

Abstract: The present invention which provides a novel means for raising and lowering the seat on a toilet bowl is composed of a housing unit which has a base portion and a handle portion, means for attaching the base portion to the bottom side of the toilet seat, a Central Processing Unit (CPU), an infrared emitter, a signal processor, an infrared receiver module, a speaker, a LED module, a power source, a ball switch, and a power detector. It is to provide a method and an apparatus in a sanitary application or especially in a public toilet, whereby the method and apparatus achieve a clean and hygienic way of raising the toilet seat, and also alert the user to lower the toilet seat after use.

Abstract: Embodiments of the invention include devices for reliably indicating when the water level in a toilet tank rises to the top of the overflow tube. Indicators use the presence of water in the overflow to provide for visual, olfactory and/or auditory indication of the malfunction. Features of the invention provide for a safe, inexpensive and reliable device for detecting toilet malfunction. Indicators are housed in a device that is positioned to intercept overflow water passing from the toilet tank to the toilet bowl. The presence of water in the device housing is used to release indicators into the toilet bowl water or into the air. Improvements are provided that eliminate false positive indications and prevent inadvertent damage to the toilet.

Abstract: An integrated system for hydro-thermo-sanitary apparatuses comprising electric current generating means, a control board, water temperature sensors and LEDs or strips of LEDs arranged near the water outlet section for indicating the dispensed water temperature according to the colour with which the light of the LEDs is emitted. An acoustic-vocal indicator may also be provided.

Abstract: A system encouraging users to cleanse their hands after use of a tankless toilet having a flush valve controlling the flow of water into a toilet bowl through a conduit, in which an abrupt temperature change in the conduit is used to trigger a recorded message urging the user to wash his or her hands.

Abstract: A toilet over flow prevention system for installation into a toilet having a tank in fluid communication with a bowl and having a flapper style flush valve and a supplemental water supply. The over flow system includes a flapper solenoid mounted in the tank, for depressing the flapper valve into a closed position, a overflow sensor mounted in the bowl for sensing a over fill condition in the bowl, and a control box communicating with the over flow sensor and the flapper solenoid for operably signalling the flapper solenoid to depress the flapper valve into the closed position in the case of a over fill condition.

Abstract: A toilet assembly (10) comprising a bowl (14), a toilet seat, a hinge (16, 18) that is mounted on the bowl and that pivotally supports the toilet seat for movement between raised and lowered positions, the hinge (18) having therein a bore, a tank (24) mounted on the rear of the bowl, the tank adapted to contain water for flushing the toilet and having flushing apparatus for causing the water in the tank to flow into the bowl, a latch bolt (32) extending through the hinge bore, the latch bolt including a member engageable with the toilet seat to move the toilet seat from its raised position toward its lowered position, the latch bolt further including a catch lever and a spring biasing the catch lever upwardly, a release lever mounted on the latch bolt for movement between a catch position and a release position, the release lever moving from its catch position to its release position in response to flushing of the toilet, and a nut threaded onto the latch bolt (32) to secure the hinge (18) to the bowl (14).

Abstract: A leak detection and reporting system for detecting and reporting different types of leaks. Different alarms are activated in response to different types of leaks. The present invention includes a timing module and a water flow sensor. The timing module measures a standard fill time required to properly fill a reservoir. A lower time threshold and an upper time threshold are then calculated based upon the standard fill time. A first alarm may be activated if a subsequent fill time is below the lower time threshold to identify a small leak. Also, a second alarm may be activated if a subsequent fill time is above the upper time threshold to identify a larger leak.

Abstract: A toilet or urinal facility having a screen to display video material. A sensor detects the presence of a person in the facility. A memory device stores data from and is connected to the sensor. A video/audio device is connected to the screen to relay messages thereto.

Abstract: A five-second leak detection technique is used to test for invisible leaks in toilets and similar fixtures. Because of its speed it is particularly useful for large apartment complexes, condominiums and hotels where it is desirable to check hundreds of toilets in a short time. It's clear-cut results and high visibility make it ideal for home use as it unequivocally identifies seeps and slow leaks that may be undetectable otherwise. Checking is done by applying a swath of liquid with a high color density across the porcelain surface just below the rim drain holes in the toilet. If the a toilet is leaking, tiny rivulets of water draining from these holes will immediately cause white streaks in the dense colored swath, alerting the operator to the presence of a leak.

Abstract: Disclosed are an infant's chamber pot having a health checking function and an operating method thereof. The infant's chamber pot comprises a power source section; a temperature sensor installed on a bottom surface inside the chamber pot to measure a temperature of stool; a controller electrically connected to the temperature sensor, operated by a voltage supplied from the power source section and having a memory part in which melody signal data and warning signal data are stored, the controller selectively outputting the melody signal data or the warning signal data depending upon the stool temperature sensed by the temperature sensor, by comparing the stool temperature with a normal threshold temperature; and a speaker electrically connected to an output terminal of the controller, the speaker converting the signal data outputted from the controller into an audible signal and then, outputting the audible signal.

Abstract: A system for providing a home health care service includes a health care center, a service recipient device, and the Internet that connects these components. The health care center: is constructed on the Internet; includes a database for registering personal data that are necessary for the health care of registered at-home patients as basic health care data and storing measurement data that are provided from at-home patients over the course of time; and has the functions of inferring the health conditions of at-home patients based on the measurement data as well as the basic health care data and offering services necessary for health care or services appropriate for inferred health conditions, to at-home patients. The service recipient device includes a biosensor and a signal processor. The biosensor detects chemical components contained in a substance that is discharged from the human body and converts detected values to electrical signals at the point of discharge.

Abstract: A back flow prevention valve for preventing water from draining back into a water supply line. The back flow prevention valve includes a housing comprising a tubular body having a first and second open end each having a respective covering thereon with an aperture extending therethrough. A water supply pipe is fluidly coupled to the aperture in a first covering. A cylinder is coupled to the first covering and extends inward of the tubular body. A piston having a bore extending therethrough is slidably positioned in the cylinder. A biasing member biases the piston toward the first covering. The aperture in the second covering has a ledge therein for opening the valve. A one-way valve is removably coupled to the piston and is adapted for letting water move outwardly through the piston toward the second end of the tubular member.

Abstract: A toilet-installed digital sphygmomanometer provided with retractable cuffs. A housing (36) is arranged laterally of a toilet seat and two occluding finger cuffs (62) different in size are mounted to associated respective sliders (70) in a manner movable relative to the housing (36). In use, one of the sliders is moved to permit a cuff (62), of a size suited to the size of the user's finger, to protrude out of the surface of the housing (36) for engagement by the finger. When not in use, all the cuffs are retracted within the housing so that the cuffs are kept clean. In another embodiment, a plurality of pivoting arms are hinged to the housing and the cuffs different in size are mounted, respectively, to the associated pivoting arms. In still another embodiment, a plurality of cuffs different in size are mounted to a revolving member journaled to the housing and a particular cuff is selected by rotating the revolving member.

Abstract: A toilet tank flush valve for use in the demand mode, and which includes a discharge control and closure valve for controlling the flow of water from the tank or reservoir to the bowl, and with the valve further having a generally cylindrical configuration with an open top and a closed bottom defining a water retaining chamber, with the chamber extending upwardly above the discharge drain opening and being designed to retain a fill of a certain first quantity of water. Pivotal opening of the valve, while tipping a portion of the water outwardly of the enclosure, will not discharge more than about 70% of the volume of water retained within the enclosure so as to permit a more positive seal of the valve onto the discharge drain opening.

Abstract: A networked health care and monitoring system (10) capable of providing an updated reliable vital information on the health condition of individuals and adapted to support home health care and maintenance. The system includes testing and measuring instruments (39; 43; 46; 49; 56) associated with certain household appliances such as a toilet system (12) and adapted to monitor the vital information passively in response to the use thereof in connection with routine living activities of the individuals. The system may further include control devices (39; 46; 49; 56) associated with certain household appliances, such as an ergometer (15), having health care and maintenance functions and adapted to control the appliances based on the vital information monitored by the testing and measuring instruments in the system.

Abstract: A new and improved child's auxiliary toilet seat for a toilet includes a hinge pin assembly which includes a hinge pin and first hinge members connected to the toilet for receiving the hinge pin. A first toilet seat assembly has a large aperture for adults. A second toilet seat assembly includes a narrower aperture for children. The second seat portion includes a portion proximal to the water tank and a portion distal to the water tank. The second seat portion further includes a first side portion and a second side portion that extend between the proximal portion and the distal portion. The respective first side portion and the second side portion include respective leg supporting extension members which project toward each other from the respective first and second side portions, thereby narrowing the aperture for the children's use. A toilet seat cover covers the toilet seat assemblies.

Abstract: A urine detection device is disposed to a urine receiving surface of a toilet stool in which urine, diluting water and reagent are mixed by vertically moving a piston in the cylinder of the detection device, the reaction between them is detected by an electrode and the ingredient in urine is detected. Liquid in the cylinder is stirred by a stirring device to blown air into the reagent reservoir, by which oxygen is dissolved in the reagent. Cleaning liquid is sprayed from the nozzle to the electrode for flushing. An opening is disposed to a supporting wall of the toilet stool, through which the cylinder is detached or attached. The electrode is disposed such that its rear end is directed to the opening and detached or attached through the opening.

Abstract: A manual flush control for toilets having a normally closed flapper type float valve held shut by the head of water pressure in the flush tank, and characterized by a height limiting means for said valve to cause servo closing and preempting automatic operation.

Abstract: A toilet system (10) with urine assay function is disclosed which comprises a toilet stool (12) having a toilet bowl (14) and a small urine-sampling cavity (52). A frame (42) is mounted on the toilet stool to support a testing sheet handling and transfer mechanism (30) which comprises a swingable carriage (46) and a slidable arm (50) supported by the carriage for linear telescoping movement. The carriage is swingable about a vertical axis (48) between a first position in which the carriage is oriented toward the sampling cavity and a second position in which the carriage is oriented to a lateral side of the stool wherein a disposal station is provided.The toilet system enables the use of testing sheets (32) which are made from water insoluble materials.Various other embodiments are also disclosed.The system provides a high degree of reliability of analysis.

Abstract: Water testing apparatuses and methods for detecting contaminants in water supplies, such as from wells or other domestic water sources. The apparatuses are for use in reservoirs, such as a water closet of a sanitary toilet. They include an enclosure which defines an interior chamber which is intermittently charged with water. The water charged to the interior chamber is passed through one or more filters, preferably a packed column, which removes or otherwise indicates the presence of contaminants in the water. A counter measures the water passed through the system. Water is discharged from the interior chamber using a siphon. The siphon and restriction of flow caused by the filters help control the direction of flow and substantially prevent backflow. The summit of the siphon includes a relief valve for venting gas during filling of the siphon discharge.

Abstract: A water monitor for a toilet flush tank includes a sensing system and an alarm system. The sensing system includes a tube having a constricted aperture in the base. The tube is normally filled with water. When the flush tank is emptied water begins to drain slowly from the tube. A float in the control tube responds to the water level in the tube. A contact attached to the float closes contacts on the control tube if the flush tank does not refill. The closing of the contact is used to trigger an alarm signal. The monitor includes a self cleaning drainage aperture for the control tube and a flexible mounting belt which provides for simple mounting and adjustment.