Abstract: The invention relates to a dual-discharge tank for toilets, including a tank, a water inlet having controlling means which are activated depending on the volume of water contained in the tank, a discharge mechanism coupled to a drainage collector, and means for actuating the discharge mechanism. The tank also includes an additional water inlet connected to a timed valve for controlling water flow, which automatically cuts off the flow of water through said inlet after a predetermined time has elapsed since the actuation thereof. The outlet of the timed valve for controlling water flow is connected to a first pipe that directs the additional water toward the drainage collector.

Abstract: A flush valve is provided for flushing a toilet bowl. The flush valve includes a center tube having a lug, a flush activation device configured to initially raise the center tube, at least one latching mechanism configured to control movement of the center tube, and at least one rack configured to have movement controlled by the at least one latching mechanism. The at least one latching mechanism controls volume of fluid used during a flush.

Abstract: A toilet tank flushing system including a ballcock valve for maintaining a storage level of water in the tank, a tank valve to release stored water on demand, and a linkage system which requires a reduced physical effort to initiate flushing. A hollow, open-ended closure for the tank valve enables a large cross-section area of discharge port to be used, and which can pass bowl refill water during the flushing sequence.

Abstract: A flush tank includes a water entrance to receive water from a water reservoir, a water outlet for discharging the water and controlled by a valve member, and a water inlet disposed in the upper portion to receive waste water from waste water suppliers. A valve device is attached to the lower portion of the tank member, to control and to allow little water to flow into the tank member via the water entrance. Another valve device is attached to the upper portion of the tank member, to control and to allow the waste water to flow into and to fill the tank member via the water inlet.

Abstract: In combination, a cistern and flushing apparatus, the cistern having an outlet (7), and the apparatus comprising a valve (3, 5) for closing the outlet, the valve having a seat (5) and a sealing member (3) movable onto and off the seat, an actuating float (1) constrained to move substantially vertically in the cistern and connected with the sealing member so that the buoyancy of the float acts to press the sealing member onto the seat, means (10) for holding the float against its buoyancy and an actuation mechanism (18, 18, 11) for releasing the float thereby to open the valve.

Abstract: Methods and apparatus for flushing a toilet are disclosed, the method including actuating a flushing initiator to open a reservoir discharge valve, closing the reservoir discharge valve after a predetermined period of time, and determining that predetermined period of time by means of a hydraulic timer disposed in a water-containing reservoir whereby the water remaining in the water-containing reservoir operating the hydraulic timer. Apparatus for carrying out these methods are also disclosed.

Abstract: An interlock mechanism (6-9, 41-47) for a cistern or flush tank (1) has an underwater flush valve (3). The interlock mechanism is linked with the float arm (7, 57) of an inlet valve (5, 50). The interlock mechanism latches the float arm in its raised position in the event of a leaky flush valve (3). Thus although a single cistern volume is lost there is no further loss. The next time a flush actuator (10) is operated the interlock mechanism in unlatched allowing the cistern to re-fill. The rising water re-sets the interlock latch mechanism.

Abstract: A water saver device to be connectable to the flushing mechanism of a conventional toilet. The device causes the conventional flapper valve of the discharge opening of the toilet tank to close prematurely prior to discharge of the entire contents of the tank. The device is to be adjustable so that during the flushing action of the conventional toilet, between fifty to seventy percent of water is used from what would normally be used. There is a second embodiment which permits selecting of either a full flush or a half flush.

Abstract: A flush control device for use in a toilet tank of the type containing a standpipe and a flap valve pivotally mounted on the standpipe for closing an outlet in the bottom of the tank includes a cylindrical sleeve for slidable mounting on the standpipe and a bulbous float at the bottom of the sleeve. The float is defined by an upwardly opening first cup integral with the bottom end of the sleeve, and an inverted second cup slidably mounted on the sleeve, so that the buoyancy of the device can be changed. Thus, the water level at which the flap valve closes, and consequently the quantity of water discharged through the outlet can be controlled.

Abstract: The present invention discloses a dual flush cistern mechanism in which a hollow central stem functions as a flush valve operating member, a slide for a float and an overflow pipe. The float is retained on the stem by a releasable latch during normal operation. During reduced volume flush operation the latch is released, the float drops with the level of water in the cistern sliding along the raised stem until it strikes a projection thereby lowering the stem and prematurely closing the flush valve.

Abstract: A water saver outlet valve mechanism for a flush tank includes a latch for holding the valve open when pulled open by the flush handle. This latch is released by a float either at a water saving intermediate level, or when the tank is empty for a full flush, as selected by the user. A full flush is obtained by retracting an operator for the latch to an inoperative position at the water saving level, allowing the float to pass without releasing the latch. This retraction is done when the flush lever is pushed to start a flush. The float locks the latch in retracted position if the water level drops a predetermined amount before the flush lever is released.

Abstract: A float is slidably mounted on the upright overflow tube or other upright guide in the toilet tank. As the water level lowers during flushing, the float descends so that a valve actuator on the bottom of the float closes the flapper valve when the water level is partway down the tank, to conserve flush water.When it is desired that the user have a choice between a limited flush for the flushing of liquids and a full flush, a hook is provided so that it can be manipulated to engage the float to hold the float in its raised, non-actuating position. By manipulation of the flush handle, the hook on the flush lever can be moved between the float-engaging and the float non-engaging position.

Abstract: A dual mode flush valve assembly selectively operable in a full or partial flush mode for use with a toilet flush tank assembly including a flush actuator movable between a first and second position interconnected to a buoyant flush valve movable between an open and closed position, the dual mode flush valve assembly comprising a flush valve actuator assembly movable between an upper buoyant position, an intermediate full flush position and a lower partial flush position in combination with a flush valve control assembly movable between a first and second position disposed to selectively engage the flush valve actuator assembly when in the first position such that when the flush actuator is in the first position the flush valve actuator assembly is in the upper buoyant position and the buoyant flush valve is in the closed position, when the flush actuator is moved from the first to second position for less than a predetermined period of time moving the buoyant flush valve to the open position, the flush valve

Abstract: The valve piece of a toilet-tank discharge valve is moved into its open position by the release activation of an associated activating mechanism. It usually remains in this position until the flushing process is complete and the drops back into the closed position. The valve piece can also be moved back into its closed position ahead of time by discontinuance activation. The activating mechanism has a shift mechanism that can be reversed in its operating direction by a change of state in the toilet tank associated with release activation in such a way that discontinuance activation can result from renewed activation of one and the same activating mechanism in the same direction as during release activation. The device is convenient to operate and provides a wide range of possible ways of designing the operating element from the aspect of appearance. Simple remote operating devices can also be employed.

Abstract: An overflow pipe in a water closet supports a valve arm which carries a valve for opening and closing an outlet in the bottom of the tank. A first float is connected to the outer end of the valve arm to maintain the valve in an open position until the water level falls below a predetermined level. A second float is carried on a float arm pivoted intermediate its ends to the support. Cooperating lock means are provided on the end of the float arms opposite the float and in the travel path of the valve arm whereby a horizontally disposed pin on the valve arm is adapted to engage a horizontal surface on the adjacent end of the float arm and move therealong into locking engagement with a vertical shoulder thereby holding the valve in an open position until the water level in the tank falls below a second predetermined lower level thereby releasing the valve arm to return the valve to its closed position. A trip handle is connected to the first float for initially moving the valve to an open position.

Abstract: A water-saving device for toilets is provided which when employed in a conventional toilet tank allows for flushing a conventional toilet employing an amount of water which is substantially less than usually employed. The water-saving device of the invention employs a combination of a lower float and an upper float; upon flushing, the lower float functions as a closure member for the orifice in the bottom of the toilet tank and the upper float is adapted to bear against the lower float to force the lower float to seat in the orifice of the tank after the level of water in the tank has been reduced to 75% or less of the water normally used in flushing a toilet. In addition, locking means and related control means are provided for releasing the upper float when the toilet is flushed and for locking the upper float in an immobile position when the flush has been effected.

Abstract: A water-saving device for use in the tank of a flush toilet has a movable latch member for supporting the inlet valve float in an elevated position upon initiation of a flush cycle. A secondary float within the tank controls the latch member and releases the main float to allow opening of the inlet valve only after the tank water level has dropped by a predetermined amount. The delay in opening the inlet valve reduces the amount of water used in the flush cycle.

Abstract: A double valve construction selectively provides a full flush or a partial flush from the tank of a toilet. The apparatus, which may be utilized to modify existing toilet water closets, includes a hollow cylinder with a first valve on its lower end engageable with a first valve seat on an upper end of an outlet from the tank. The upper end of the cylinder defines a second valve seat and a second valve is engageable with the second valve seat. As an operating handle is selectively moved through a first range of travel, it disengages the second valve from the second valve seat for a partial flush and as the operating handle is moved through a second range of travel, it disengages the first valve from the first valve seat for a full flush. The volume of water utilized in a full flush is adjustable, and a mechanism is provided for holding the first valve in its open position until a full flush has been achieved.

Abstract: A flush water conserver adapted for easy retrofitting to existing standard toilet flush tanks is disclosed. The standard trip lever fixed to the pivot shaft of the toilet operating handle is replaced with a trip lever mounted on a pivot which is located between the operating handle pivot shaft and the adjacent sidewall of the flush tank. A rocker is affixed to the operating handle pivot shaft. This rocker is located below the new trip lever and the new trip lever rests on it. Thus, the new trip lever is raised when the operating handle is rocked in either direction. A control float is provided, and a stop is affixed to the flush ball stem. The stop is so constructed and located that when, during a flushing operation, the water in the flush tank has only partially receded, the weight of the control float is brought to bear on the stop, and thus the flush ball is pressed toward its seat while the control float continues to drop with the receding water.