In a discharge valve device, a protuberance penetrates a vertical channel with a raised portion engaging a channel. Thus when an attempt is made to rotate a cylindrical body in the circumferential direction with a raised portion engaging a channel, contact between the protuberance right side surface and the vertical channel restricts rotational movement of the cylindrical body in the circumferential direction.

A twin water-drainage valve inner core tube starting apparatus includes a button seat, main body, half drainage button, full drainage button, half drainage float, full drainage float, inner core tube and lever, the half drainage float, full drainage float and inner core tube being installed inside the main body to form a half drainage structure and full drainage structure, the button seat being configured on the main body, and the half drainage button and full drainage button being mounted on the button seat, where at least two levers arranged symmetrically are mounted inside the main body, one end of the two levers is abutted against the half drainage button and full drainage button, and another end thereof is in connection with the inner core tube through a pull rod. Whereby, the present invention can reduce the water drainage pressing force and decrease the friction between the components.

A trip lever assembly for a toilet includes a body and an infrared sensor. The body is configured to be mechanically coupled to a flush valve assembly of the toilet. The infrared sensor is coupled to the body, and is configured to be electrically coupled to the flush valve assembly. The body is configured to be manually actuated to control the flush valve assembly. The infrared sensor is a time-of-flight sensor configured to detect the distance of an object in a detection region of the infrared sensor to control the flush valve assembly.

A volume controllable toilet flush system, comprising: a cistern configured to hold and retain a fluid; a vertically moveable siphon assembly comprising a siphon portion, a pipe and at least one resilient element attached to the pipe; a toilet bowl shaped to retain and hold waste; an actuator operatively connected to the pipe by a stud attached to the pipe and configured to provide vertical movement to the siphon assembly, wherein movement of the siphon assembly by the actuator stores or releases energy in the at least one resilient element and, wherein downward vertical movement of the siphon assembly puts the toilet bowl in fluid communication with the cistern by creating a siphoning action between the siphon portion and the fluid in the cistern and wherein subsequent upward vertical movement of the siphon assembly terminates the siphoning action to stop fluid flow from the cistern to the toilet bowl.

A touchless actuation system for a toilet includes a touchless sensor, a motor assembly, and a processing circuit. The touchless sensor is located within a closed reservoir of the toilet. The processing circuit is configured to receive a signal from the touchless sensor and to detect an object within a detection region based on the signal. The detection region is external to the closed reservoir. The processing circuit is configured to facilitate flushing of the toilet through interaction with the motor assembly when the object is detected.

A pneumatic drain valve driving device includes a cylinder, including a cylinder body and an air chamber. The air chamber includes an air chamber communication port in air communication with an outside of the cylinder body; and an air chamber exhaust port configured to be connected to a pneumatic drain valve. The cylinder also includes a liquid chamber, including a drain hole configured to receive a slide valve. The cylinder also includes a piston disposed in the cylinder body. The device also includes a pilot valve, connected to the liquid chamber through a waterway and including a pilot valve control port. The device also includes a linkage trigger mechanism disposed between the pilot valve control port and the slide valve and configured to control an opening and a closing of the pilot valve control port and the slide valve.

Various methods and systems are provided for dual flush activation. In one embodiment, an assembly includes a handle assembly; and a transfer box configured to detachably connect to an actuation control box of the dual flush toilet system. The transfer box is configured to translate a rotational motion of the handle assembly into a linear motion accepted by the actuation control box to initiate a flush mode of the dual flush toilet system. In another embodiment, an assembly includes a dual-input actuation control box configured to detachably connect to a rotary handle assembly and a push button assembly. The dual-input transfer box is configured to translate a rotational motion of the rotary handle assembly and a liner motion of the push button assembly into a linear motion to initiate a flush mode of the dual flush toilet system.

A volume controllable toilet flush system, comprising: a cistern configured to hold and retain a fluid; a vertically moveable siphon assembly comprising a siphon portion, a pipe and at least one resilient element attached to the pipe; a toilet bowl shaped to retain and hold waste; an actuator operatively connected to the pipe by a stud attached to the pipe and configured to provide vertical movement to the siphon assembly, wherein movement of the siphon assembly by the actuator stores or releases energy in the at least one resilient element and, wherein downward vertical movement of the siphon assembly puts the toilet bowl in fluid communication with the cistern by creating a siphoning action between the siphon portion and the fluid in the cistern and wherein subsequent upward vertical movement of the siphon assembly terminates the siphoning action to stop fluid flow from the cistern to the toilet bowl.

The present invention relates to a flushing device for a direct-outlet type toilet bowl, including an inner housing wherein cleansing water is separately stored and installed inside a water tank of the direct-outlet type toilet bowl in order to minimize a fixed amount of the cleansing water used for cleansing urine and feces by being commonly installed in the direct-outlet type toilet bowls with various capacities.

A trip lever assembly for a toilet includes a body and an infrared sensor. The body is configured to be mechanically coupled to a flush valve assembly of the toilet. The infrared sensor is coupled to the body, and is configured to be electrically coupled to the flush valve assembly. The body is configured to be manually actuated to control the flush valve assembly. The infrared sensor is a time-of-flight sensor configured to detect the distance of an object in a detection region of the infrared sensor to control the flush valve assembly.