A flush toilet is provided comprising a storage tank, a toilet body including a discharge trap, and an overflow channel causing flush water to overflow when the flush water within the storage tank exceeds a predetermined water level, the overflow channel is provided to connect the storage tank and a discharge flow channel downstream of a bent conduit of the discharge trap containing sealed water formed inside, and the storage tank includes a reservoir provided in a part of the storage tank to constantly reserve flush water regardless of toilet flushing, and a connecting flow channel provided upstream of the overflow channel to connect the reservoir and the overflow channel.

A quick water discharging device of a toilet tank, including a water discharging structure including a main pipe and an overflow manifold communicating with an inner space of the main pipe; and a water stoppage structure including a rubber valve seat located at an end of the main pipe, and a water stoppage valve pivotally connected to the overflow manifold and fitted with the rubber valve seat. The main pipe includes a pipe body, the inclined surface, and a communication hole communicating with the overflow manifold. The rubber valve seat includes a seat body, an opening communicating with the main pipe, and at least one baffle extending from the seat body to the main pipe. The baffle is close to an inner wall of the main pipe, faces the communication hole, and covers at least 50% of an area of the communication hole.

A flushing structure of a toilet and a toilet includes a main waterway, a jet waterway and a rim waterway. A main waterway inlet is in communication with an outlet on the toilet tank. A main waterway outlet is in communication with a jet waterway inlet and a rim waterway inlet. A jet waterway outlet is in communication with a jet hole beneath a water surface of a first water seal at the bottom of the toilet bowl. A rim waterway outlet is in communication with a rim hole provided on the toilet bowl for flushing the inner wall of the toilet bowl. A second water seal, whose water surface is on the same level with surface of the first water seal, is provided on the rim waterway. The main waterway and the jet waterway are isolated from air via the first water seal and second water seal.

A device adapted for installation onto a toilet overflow pipe to indicate a leaking condition of a toilet flush valve. The device having a stem portion with a diameter configured for receipt within an interior diameter of a toilet overflow tube. The device including a housing forming a reservoir for collection of water prior to entering the overflow tube. The reservoir including a cavity for the placement of a water soluble pigment, wherein the pigment is dissolved within water in the housing and into the overflow tube. An alternate embodiment of the device, includes a stay member configured to support a ball float member in an off condition.

A flush toilet includes a bowl, a tank coupled to the bowl, a flush valve positioned within the tank, and a flush device configured to initiate a flush cycle. The automatic toilet further comprises an electronic sensing assembly having a sensing member positioned on the bowl for detecting an overflow condition of the bowl, an overflow device operably coupled to the flush device, and a controller in electronic communication with the electronic sensing assembly and the overflow device for controlling the flush device in response to a condition of the toilet.

A system for preventing overflow of a toilet includes a sensor, a processor and an actuator. The sensor senses a parameter caused by fluid dynamics within the toilet during a flush cycle. The parameter may involve vibration, sound, pressure, fluid flow rate or other detectible characteristics of the toilet. The processor uses information regarding the parameter that is gathered by the sensor to evaluate the condition of the flush cycle to determine if an impeded flush condition exists. In the event of an impeded flush condition, the processor directs the actuator to close a valve, which may be the toilet flapper valve in some embodiments. Also disclosed are methods for preventing toilet overflow, detecting an impeded flush condition and calibrating the system.

A system for preventing overflow of a toilet includes a capacitance sensor arrangement as in combination with certain features (e.g., flap valve disablement). The system can detect an overflow flush condition of a toilet by sensing the value of a parameter of one or more normal flush cycles of the toilet and establishing a normal range for the value of the parameter using the sensed value. The system can also store the normal range in a memory for comparison to a value of the parameter during subsequent flush cycles. The system can perform sensing over a predetermined timeframe. The system can include the time frame being sufficient to include the entire push cycle of the toilet.

A controller acquires image data captured by a camera which is located at a toilet to capture an image of a bowl of the toilet, determines whether an unacceptable matter being an object having a possibility of clogging the toilet is in the bowl by performing image recognition based on the image data, and sends, to a flush water controller, a flow prohibition signal of prohibiting flush water from flowing when it is determined that the unacceptable matter is in the bowl.

A toilet handle lock device for selectively preventing a handle of a toilet from moving in a flushing motion is formed of a housing having a rear surface for attachment to a tank of the toilet. The device further includes a biased lock member at least partially disposed within the housing and moving in a linear direction between an extended locked position in which the biased lock member is positioned for blocking the handle of toilet and preventing the handle from undergoing a downward flushing motion and a retracted unlocked position in which the biased lock member is spaced from the handle of the toilet. An actuator is provided for releasing the biased lock member from the extended locked position and permitting the biased lock member to move to the retracted unlocked position.

A system for preventing overflow of a toilet includes a sensor, a processor and an actuator. The sensor senses a parameter caused by fluid dynamics within the toilet during a flush cycle. The parameter may involve vibration, sound, pressure, fluid flow rate or other detectible characteristics of the toilet. The processor uses information regarding the parameter that is gathered by the sensor to evaluate the condition of the flush cycle to determine if an impeded flush condition exists. In the event of an impeded flush condition, the processor directs the actuator to close a valve, which may be the toilet flapper valve in some embodiments. Also disclosed are methods for preventing toilet overflow, detecting an impeded flush condition and calibrating the system.