210results about "Floats for valve actuation" patented technology

A mechanism for opening or closing a shut-off valve, the mechanism having a valve actuator for moving the valve from a first position to a second position, an urging means, a trigger which, when activated, triggers operation of the valve actuator, the trigger including a retainer which ordinarily holds the shut-off valve in the first position against the force applied by urging means, and a sensor reactive to an external stimulus which releases the trigger upon receiving appropriate external stimulus.

A fill valve assembly for a toilet tank including a vertical standpipe, a pilot valve assembly located at the top end of the standpipe, and a vertically movable float which is connected to the pilot valve assembly. The pilot valve assembly opens the valve assembly when the float moves vertically downward and closes the valve assembly when the float moves vertically upward.

Various toilet valves and methods are described that provide for locking of the toilet filled in a closed state. In one embodiment, a toilet fill valve is provided having an actuating arm. The toilet fill valve is closed when the actuating arm is disposed in a first position and is open when the actuating arm is disposed in a second position. A valve lock is attached to the actuating arm. The valve lock includes an unlock position and a lock position. The valve lock fixes the actuating arm in the first position when the valve lock is in the lock position.

A liquid level control system for detecting and responding to changes in the level of liquid in a container. The system includes a transmitter in radio communication with a receiver, which is in turn connected to a valve assembly. The transmitter unit is programmable to respond to changes in the level of liquid in a container and to emit a radio signal receivable by the receiver unit, which controls the release of liquid to the liquid container via the valve assembly. The signal may be suppressed by a timing circuit in the transmitter circuitry unless and until a liquid level change is sufficiently sustained. The receiver is also programmable to keep the liquid control valve open a predetermined amount of time or to close the valve upon receipt of a high liquid level signal.

A dual-action vent check valve is disclosed. The valve includes a first check valve which is responsive to elevated fluids inside the valve. A second check valve is responsive to elevated fluids external to the valve. The first check valve prevents overflow from a vented structure, such as a sewer out-fall line, from passing through and out of the valve, thereby preventing spills. The second check valve operates to prevent floodwater from passing into an underground structure, such as a sewer, through the vent. One embodiment of the invention includes a basket for enclosing a deodorizing material inside the valve for deodorizing gases which pass through the valve.

A buoyancy flushing apparatus is disclosed which comprises a reservoir for accumulating liquid, having an inlet for receiving liquid and an outlet chamber recessed in a bottom wall of the reservoir. The outlet chamber includes an outlet for draining liquid out of the reservoir. The apparatus further comprises an outlet valve movable between a down position where liquid accumulates in the reservoir and a raised position where liquid accumulated in the reservoir is flushed out via the outlet. The outlet valve comprises a ballast unit sized and shaped to fit loosely in the outlet chamber when said valve is in the down position; and a float unit topping the ballast unit to move the valve in the raised position by buoyancy when a sufficient amount of liquid is accumulated in the reservoir, thereby providing a passageway for liquid between the bottom wall of the reservoir and the valve leading to the outlet in the outlet chamber to flush liquid out of the reservoir. Guiding means are provided for guiding the outlet valve between the down position and the raised position. The apparatus can be used for applications such as water treatment and irrigation. It could advantageously be used for directing and spreading waste water previously treated in a septic tank to different sanitary treating fields.

A fuel valve comprising a primary valve and a pressure responsive auxiliary valve, both being axially accommodated and displaceable within a common housing formed with a fluid inlet and a fluid outlet port, and a partition extending between the primary valve and the auxiliary valve. The partition comprising a flow passage extending between a primary port at a bottom face of the partition and an auxiliary port at a top face of the partition. The primary port is sealable by a sealing member of the primary valve and the auxiliary port sealable by a sealing member of the auxiliary valve.

Controls for use in association with the main tank of a toilet include a container which is disposed in the main tank and holds a body of water. A float is movable in the container to expel water from the container and effect operation of an inlet valve from a closed condition to an open condition. Water flows into an inlet compartment and into the main tank when the inlet valve is in the open condition. Water flows into an outlet compartment after a predetermined quantity of water has accumulated in the inlet compartment. Water flows from the outlet compartment into the container.

Apparatus for automatically shutting off the water supply to a leaking water heater includes a water collecting tray positionable beneath the heater, a valve mechanism attachable to the tray, a float mechanism, and an action arm interactive between the float mechanism and valve mechanism. When water collects in the tray, the float mechanism rises, causing the action arm to trigger the release of a spring-urged component of the valve mechanism to discontinue flow of water to the heater.

A water filler includes a water filling device, and a regulating device. The water filling device includes an inner filling tube, an outer filling tube, and an upper cover. The regulating device includes a floating barrel, a sliding barrel, a water support disk, and an adjusting unit. Thus, the floating barrel is lifted instantaneously and rapidly to stop the water filling action exactly and actually, thereby saving the water source. Thus, the water filler has a quick water stop function.

A system and valve for regulating the level of a fluid. The valve having a floating head member that is connected via a rotatable member to a drain member, where fluid may drain from the valve. The system having the valve and a tank, where the fluid drains from the tank once the fluid level reaches the level of the drain member of the valve.

A fuel shut-off valve includes a casing, an ascendable and descendible float, and an upper valve element, which is actuated by the float to open and close connector passage that communicates the inside of fuel tank with the outside, and which includes a valve body and a ring-shaped seat member. The ring-shaped seat member makes a connector bore, which communicates with the connector passage, therein, and includes a base, a holding portion, a seating portion, a lip-shaped portion, and a thin-film-shaped portion. The seating portion opens and closes the connector passage, and defines an opening of the connector bore. The lip-shaped portion seats on and separates away from the float, and defines the other opening of the connector bore. The thin-film-shaped portion is disposed between the base and the lip-shaped portion, and is deformable elastically upon being pressed by the float when the float seats on the lip-shaped portion.

The present invention relates to an unpowered apparatus for preventing backflow, comprising: a tubular main body having a stepped portion, wherein the main body has an inlet port for the inflow of sewage, an outlet port for discharging the sewage, and a communication port which is inclined toward the outlet port and which puts the inlet port and the outlet port in communication; an opening/shutting door having a door body rotatably hinged to the inside of the main body so as to open/shut the communication port, and a pair of blocking plates extending from either side of the door body so as to block the space between the stepped portion and an inner wall of the main body; a floating part which is arranged in the opening/shutting door, the interior of which is empty such that the floating part can float on a water surface, and which provides the opening/shutting door with buoyancy and operates the opening/shutting door so as to close the communication port when the sewage flows back toward the outlet port; and a guide interposed between the stepped portion and a bottom surface of the main body so as to guide the sewage introduced from the inlet port such that the sewage flows toward the outlet port via the communication port.

The invention discloses a battery liquid-filling valve, comprising a body, a valve core, a rotating shaft, a lever, a buoy and a water inlet channel. The battery liquid-filling valve is characterized in that the body (2) is internally provided with a fixed rotating shaft (7); the water inlet channel (3) is arranged at one axial side of the rotating shaft; the upper end of the water inlet channel is connected with a water inlet interface assembly (1); the valve core (4) is assembled at the lower end of the water inlet channel to form a valve device; the rotating shaft is provided with the lever (8) capable of rotating around the rotating shaft; one end of the lever is movably connected with the valve core; and the other end of the lever is movably connected with the body (6). By introducing a lever structure principle, the valve is controlled to be opened and closed under the action of the buoyancy provided by liquid in a storage battery to prompt a user whether the storage battery is lack of liquid or not and when to stop filling the liquid. The invention can effectively avoid the liquid lack of the battery, insufficient liquid filling, excessive liquid feeding and overflowing to damage the storage battery.

A compact ball tap with 1 a water level switch which comprises a guide standpipe 5 vertically arranged in a tank T, a float 6 slidably installed on the guide standpipe 5, a valve 3, a lever 4 controlling an open-close action of the valve 3 connected with the float 6, and a water level switch 29 transmitting predetermined control signals when the float 6 shifts to a predetermined water level, wherein one float 6 is shared by the ball tap 1 and the water level switch 29.