Abstract: A wave pool for generating surfable waves is disclosed. The wave pool includes a pool for containing water. The pool defines a channel having a first side wall, a second side wall, and a bottom with a contour that slopes upward from a deep area proximate the first side wall toward a sill defined by the second side wall. The wave pool further includes at least one foil at least partially submerged in the water near the side wall, and being adapted for movement by a moving mechanism in a direction along the side wall for generating a wave in the channel that forms a breaking wave on the sill. The wave pool further includes one or more passive flow control mechanisms to mitigate a mean flow of the water induced by the movement of the at least one foil in the direction along the side wall.

Abstract: 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.

Abstract: A valve assembly for a tank of a vehicle is disclosed. A valve body is adapted to be attached to the tank. A seat is disposed inside the valve body and defines an outlet for venting the tank. A float is disposed inside the valve body and is movable between a first position and a second position relative to the valve body in response to a liquid fluid level inside the tank. A support is coupled to the float and is movable with the float between the first and second positions. A sealing member is attached to the support and has an engagement portion supported by a base to define a space between the engagement portion and the support to allow movement of the engagement portion between an initial position when in the first position and a displaced position when in the second position.

Abstract: A toilet lever system includes a body for extending through a toilet wall, a stem extending through the body for movement relative to the body, a decorative flange covering the stem and removeably attaching to the body, and a handle attaching to the stem.

Abstract: A soft-touch double-drain valve includes a full-drain float including a large water sealing plate covering a water discharging opening and a small water sealing plate mounted in an insertion hole. A main body includes an inner tube through hole and an adjustment hole formed therein. A partial-drain weight float includes a partial-drain adjustment press bar and an inner tube penetration hole. A first position-limiting mechanism is mounted in the main body. A second position-limiting mechanism is mounted to a full-drain push button or a partial-drain push button. An inner tube is inserted in the inner tube penetration hole, the through hole, and the insertion hole and is provided with a return spring and has a lower end operable in combination with the small water sealing plate and an upper end operable in combination with the full-drain and partial-drain push buttons to control downward movement.

Abstract: An actuating device (1) for a drain fitting (9) of a flushing cistern comprises a housing (2), which is insertable into an opening (3) of a cistern lid (4), at least one push button (5), which is mounted in said housing (2) so as to be movable along an axis (M) in relation to the housing (2), and a pusher element (6), which is movable towards the drain fitting (9) to trigger flushing by actuating the at least one push button (5). The housing (2) comprises an assembly housing (7) and a push-button housing (8), which is pivotably mounted in the assembly housing (7), the at least one push button (5) being mounted on the push-button housing (8).

Abstract: A driving mechanism of a flush apparatus includes a motorized unit supported by a valve body, a plunger arm driven by the motorized unit for operating the valve body between a sealed position to an unsealed position, and a timer module operatively linked to the motorized unit to set a flush interval for enabling the flushing operation to be completed once every flush interval. The driving mechanism converts the flush apparatus into water efficient fixture by controlling the amount of daily flushes for ultimate water efficiency.

Abstract: An external automatic flush helper comprises a housing and fixing means for fixing the housing onto a toilet tank. Within the housing there are provided with a DC power supply, a controller powered by the DC power supply, an infrared sensor and a motor connected with the controller, and an actuating mechanism connected with the motor. An end actuator of the actuating mechanism is arranged in alignment with the button of the toilet tank. The end actuator can be actuated and move out of an opening in the housing when a user status is detected by the infrared sensor, and thus press the button of the toilet tank. Therefore, automatic flushing can be achieved contactlessly.

Abstract: This invention is a toilet flushing system. It consists of a button controlled pressure flushing device, a sealed water tank, a flushing valve, major and minor flushing control valves, an air induce device and a one-way water valve. The characteristic of the system is that the button controlled pressure flushing device has a water-volume adjustable valve, a flushing valve with a sealed cavity which has a water injection pipe and a water release pipe. The inlet and the outlet of the water-volume adjustable valve are connected to the outlet of the one-way water valve and water injection pipe of the flushing valve respectively. The inlets of the major and minor flushing control valve are connected to the water release pipe of the flushing valve. The outlets of the major and minor control valves are linked to the main release outlet which has large diameter and high speed on-off action.

Abstract: A water flush mechanism has a plunger having a plug and a stem connected to the plug. There is a lower float located around a lower portion of the stem and a middle float located around the stem. There is an upper float located around the stem. The float is connected to an upper portion of the stem so lifting of the float causes the plunger to rise.

Abstract: The device has a housing (5) which comprises an opening (4) in which a button (15) is fixed on a receiving part (8) mounted movably in the housing (5). A fitting aid (36) is provided, with which the button (15) may be introduced into the opening (4) in the housing (5) and positioned in a recessed manner therein as well as being fixed to the receiving part (8). Sets of teeth (23, 27) on the receiving part (8) and on the button (15) enable simple and depth-adjustable fixing of the button (15) to the receiving part (8).

Abstract: A diverter valve including: an inlet port coupled to a refill tube; a first outlet port; a bowl refill tube coupled to the outlet port with its second end adjacent to a toilet tank overflow tube; a second outlet port; a central flow passageway providing a path of fluid communication between the inlet port and the first and second outlet ports, the entrance of the first outlet port and the entrance of the second outlet port being directly opposite one another in the central flow passageway; a poppet in the central flow passageway, the poppet having a raised position obstructing the first outlet port and a lowered position obstructing the second outlet port; an actuating arm, float member and rod coupled to the poppet, wherein movement of the float member translates downward motion of the rod into upward motion of the actuating arm and vice versa.

Abstract: A dual flush button assembly includes a unitary button with a full flush surface and a partial flush surface. Pressing the partial flush surface moves the button linearly to active a partial flush. Pressing the full flush surface rotates the button to activate a full flush. An extension member beneath the button is coupled to a link of a dual flush valve. The extension member is moved farther when the full flush surface is engaged. The button is configured to pivot with respect to a housing when the full flush portion is engaged.

Abstract: The present invention provides a toilet bowl flushing water tank device which can largely open a discharge valve element instantaneously and, at the same time, can ensure a relatively large space in the vicinity of a discharge valve device thus enhancing a discharge capacity with a small power. A push button mounted on a tank lid body of a flushing water tank body is arranged at a position offset to one side from a position where a discharge opening is formed, a leverage device is constituted of a lever which is interlockingly connected to the discharge valve element and a pedestal which pivotally supports a middle portion of the lever. The pedestal pivotally supports a middle portion of the lever at a position closer to a push button side than the discharge valve device.

Abstract: A dual flush refill device refills a bowl of a siphonic toilet with adequate supply of refill water in response to either a full or partial flush without wasting the refill water. The device provides a relatively high flow rate of refill water from a refill tube to an overflow tube in response to a partial flush, and a relatively low rate of refill water from the refill tube to the overflow tube in response to a full flush. As a result, the toilet bowl is refilled with a substantially similar volume of refill water regardless of which flush option is selected.

Abstract: This invention is a toilet flushing system. It consists of a button controlled pressure flushing device, a sealed water tank, a flushing valve, major and minor flushing control valves, an air induce device and a one-way water valve. The characteristic of the system is that the button controlled pressure flushing device has a water-volume adjustable valve, a flushing valve with a sealed cavity which has a water injection pipe and a water release pipe. The inlet and the outlet of the water-volume adjustable valve are connected to the outlet of the one-way water valve and water injection pipe of the flushing valve respectively. The inlets of the major and minor flushing control valve are connected to the water release pipe of the flushing valve. The outlets of the major and minor control valves are linked to the main release outlet which has large diameter and high speed on-off action.

Abstract: The system for opening and/or closing an inlet valve (10) and/or an outlet valve (30) of a liquid container (24), particularly for water toilets, water tanks or the like, comprises an inlet tube (16) with an inlet valve (10) in the upper portion of the container (24) and an outlet tube (20) with an outlet valve (30) in the bottom portion (25) of the container (24), both valves (10, 30) being provided with a valve body. It is characterized by the use of a bistabile inlet valve (10) having a lag-free opening and closing characteristic without any intermediate opening position of the valve body (14; 38,46), the closing stroke of the valve body being assisted by the flow of the liquid.

Abstract: The actuating device comprises a push button housing (7), which may be inserted into an opening (4) in the cistern lid (2). At least one push button (8, 9) and a pusher (11) are mounted in the push button housing (7) for triggering flushing. The push button housing (7) is fastened only to the cistern lid (2) and may be lifted with the cistern lid (2) off the at least one push button (8, 9) and the pusher (11). The actuating device is particularly suitable for cisterns of ceramic material and enables simpler and quicker mounting as well as servicing of the cistern.

Abstract: The present invention provides a toilet bowl flushing water tank device which can largely open a discharge valve element instantaneously and, at the same time, can ensure a relatively large space in the vicinity of a discharge valve device thus enhancing a discharge capacity with a small power. A toilet bowl flushing water tank device includes a flushing water tank body forming a discharge opening in a center portion thereof, a discharge valve device for vertically moving a discharge valve element relative to the discharge opening, the discharge valve device being mounted and housed in the flushing water tank body, a leverage device being interlockingly connected to the discharge valve device, the leverage device being mounted and housed in the flushing water tank body, and a push button being interlockingly connected to the leverage device in the flushing water tank body, the push button mounted on a tank lid body of the flushing water tank body.

Abstract: A dual actuation button assembly (10) for a dual volume flush cistern. The assembly includes dual actuation button members (14, 16) which are both adapted for movement upon actuation in a common actuation direction. A single spring (18) is adapted to apply a force to both of the button members (14, 16) in a direction opposite to the actuation direction. The spring (18) is adapted to maintain some of said force on one (14,16) of the button members during actuating movement of the other of the button members (16, 14).

Abstract: A lifting lever (10) for a cistern flush valve. The lever includes a first end (14) adapted for operative engagement with the cistern flush valve, a second end (18) adapted for operative engagement with a flush actuation button (24) and a pivot mounting (28) between the first (14) and second (18) ends. The second end (18) has first and second engagement regions (32, 34) which are respectively closer and farther to the pivot mounting (28). Initial movement of the button (24) causes it to engage the second engagement region (34) and pivot the lever (10) through a first predetermined range of movement whereafter further movement of the button (24) in the same direction causes it to engage the first engagement region (32) and further pivot the lever (10).

Abstract: A two stage toilet tank bowl control system includes a tank ball selectively positioned on the valve seat in the water tank. The tank ball is linked to a lifting lever so as to raise the tank ball from the seat when the lifting lever is rotated in its flushing direction. An air outlet tube communicates with the interior of the tank ball to permit air to be exhausted from the interior of the tank ball. The air tube communicates with a passageway in a air flow block mounted to the wall of the water tank. The passageway has a full flush branch and a partial flush branch. A partial flush valve maintains the partial flush branch closed during conditions of full flush. A full flush handle moves the lifting lever in its flushing direction with the partial flush valve maintained in a closing condition against the outlet of the partial flush branch.

Abstract: A flushing mechanism for a dual flush cistern system comprises a float assembly (1) comprising a hollow valve stemn (2) carrying a sealing valve (3) for sealing the outlet opening of the cistern at or towards one end and being open at each end to define an overflow passage and a float (6) fixedly attached around the valve stem (2), a cylindrical guide member (7) surrounding the float (6) and having at the end adjacent the sealing valve at least one opening to allow liquid to pass to the outlet opening, an operating rod (17) arranged to move vertically upward to raise the float assembly (1) to open the vavle (3), first and second operating means (25, 26) arranged to effect such vertical movement of the operating rod (17), the first operating means (25), an operation, being arranged to raise the float assembly (1) a first distance to a level which the float assembly (1) is buoyant, and the second operating means (26) being arranged to raise the float assembly (1) a second distance, less than the first distance

Abstract: A dual volume discharge apparatus for selectively discharging a full flush or a half flush of liquid from a reservoir, said discharge apparatus including: actuator means (1) selectively moveable from a closed position to either a full flush position or a half flush position, sealing means (11) moveable by said actuator means (1) from a closed position to either a full flush position or a half flush position, said sealing means being biased toward said closed position when in said half flush position, liquid outlet (17) which is sealed by said sealing means (11) to prevent flow of liquid out of said reservoir when said sealing means (11) is in said closed position and which allows flow of liquid out of said reservoir when said sealing means (11) is in the full flush position or the half flush position, stop means (21) co-operable with said sealing means and being biased towards position capable of holding said sealing means in said half flush position when said actuator means in said half flush position until

Abstract: The present invention relates to a flushing unit for a toilet which allows water in a flushing tank to be discharged rapidly by means of the change of water pressure and working of a piston, so that only a small quantity of water is required to wash out the toilet and thus consumption of water can be significantly reduced. The flushing unit for the toilet according to the present invention uses only about 15 to 20% of flushing water compared to a conventional flushing unit, but it can satisfactorily and rapidly wash the toilet.

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: The present invention is a toilet tank discharge device, which includes a single deposit with two perfectly dosed and measured water lots, which depend on the specific use, in order to first give a determined quantity and subsequently, only in those cases when required by the user, the entire content of the deposit.

Abstract: A flush valve is adapted to be mounted in the tank of a toilet and includes a selector assembly and a flush valve. The selector assembly is accessible from outside the toilet and provides for initiation of the flushing operation and an alternative choice between a larger flush water volume and a smaller flush water volume. A support structure provides for both axial and radial movement of the selector assembly relative to the flush valve in order to facilitate mounting and aligning of the flush valve assembly. A slide mechanism provides for variation of at least the smaller flush water volume.

Abstract: A flush valve is adapted to be mounted in the tank of a toilet and includes a selector assembly and a flush valve. The selector assembly is accessible from outside the toilet and provides for initiation of the flushing operation and an alternative choice between a larger flush water volume and a smaller flush water volume. A support structure provides for both axial and radial movement of the selector assembly relative to the flush valve in order to facilitate mounting and aligning of the flush valve assembly. A slide mechanism provides for variation of at least the smaller flush water volume.

Abstract: A self-adjusting control device for a flushing system mechanism borne by a stirrup and provided with pivoting arms actuated by fingers borne by pull-handles for flushing the water, the water flush control being provided via rods acting on the head of the pivoting arms, by externally accessible control knobs on the water flushing apparatus lid. The device comprises: a housing (16) containing the control knobs (19, 20), provided with a thread pitch (p1); an insert (14), integral in rotation with the housing (16) provided with a thread pitch (p2); a fitting (25) borne by the insert (14) carries the pivoting axis (26) of the arms (10, 11); the thread pitches (p1, p2) are in the ratio p1/p2 =L1/L2 of the vertical projections of the distances from the axis of the finger (33, 34) (L1) to the contact points (31, 32) of the heads (29, 30) of the arms (10, 11) and the rods (21, 22), and (L2) to the pivoting axis (26) of the arms (10, 11).

Abstract: Operating buttons (2, 3; 102, 103; and 202, 203) for a dual flush cistern or flush tank include different operating surface area of each button presented to the user and provide an indication as to which button provides the reduced flush and which button provides the full flush. A hinge and latch assembly is used to fabricate such buttons (2, 3) by folding from a moulded form into an operational form.

Abstract: A tank device for flushing a toilet bowl includes a tank body in which flushing water is stored and in which a discharge opening is provided at the bottom. A discharge valve body is linked to the discharge opening at the bottom of the tank body. The discharge opening is formed with a valve seat on the upper end and communicates with an overflow pipe at the downstream side of the valve seat. Driving members are provided which separate a valve body from the valve seat. A support member is provided for supporting the driving members, which is fitted onto the overflow pipe and which is seated at the lower end on the bottom of the tank body. A force is applied to an actuator from outside of the tank body to separate the valve body from the valve seat.

Abstract: A multiple volume flush control apparatus for controlling a flush valve in a bottom of a flush tank, comprises a flush valve having a ventable buoyancy air chamber, a vent control assembly having a venting chamber communicating with the air chamber, a first valve for selectively activating the venting chamber for venting the air chamber at a first rate, and a second valve for selectively activating the venting chamber for venting the air chamber at a second rate.

Abstract: The present invention discloses an operating mechanism for a cistern (1) or flush tank which is able to be used for a wide variety of cisterns, irrespective of their volume to depth profile. The preferred mechanism takes the form of a generally cup-shaped weir (22) which surrounds the flush valve (18) and from which a support frame (7) extends. The height of the rim of the weir is able to be selected or adjusted, for example by the use of a number of rupturable panels (24) located in the walls of the weir (22). A mechanism (26,27) to adjust for height variations between the flush actuators (14) and the flush operating mechanism (15) is also disclosed.

Abstract: A two-stage flush device for a toilet tank, comprising a cylindrical bolt having a center hole and fixed in a hole of a side wall of a toilet tank and partly exposing out of the side wall, a rotatable button having a shaft portion fitting in the center hole of the cylindrical bolt and also firmly connected with a first actauting arm connected with a low-level valve by way of chain, a rod connected to a button at an outer side and extending through the center hole of the rotatable button to operate a second actuating arm connected with a high-level valve by way of a chain, the first actuating arm lifted by the rotatable button for flushing a larger volume of water, and the rod operating the actuating arm for flushing a smaller volume of water.

Abstract: Dual control flushing mechanism enables a user to select complete or partial flush of a toilet tank. The complete flush is obtained by lifting a mobile assembly containing a float, while maintaining the float intact. The partial flush is obtained by lifting the mobile assembly and simultaneously opening the float so that it fills with water and thereafter sinks, causing a blocking valve to engage and terminate the flushing process before a full flush has been effected.

Abstract: A device for regulating the discharge of water from a storage tank associated with a toilet bowl for flushing of the toilet bowl, with the operation of the device being through slight pressure on a push button on a rod extending through a front or end wall of the storage tank. This device has a flapper assembly for opening and closing access to a drain from the storage tank, with this flapper assembly having a storage volume with an adjustable opening for controlled release of water therefrom to control the timing of the closure of the flapper assembly against the drain. A trigger assembly portion has a trigger arm with one end engaged with the push button and the other end adapted to engage a distal arm of a pivotal lever arm, this lever arm carrying a buoyant float. Release of the engagement of the distal ends of the trigger arm and the lever arm causes the lever arm to rise, due to the float, and the lever arm engages the flapper assembly to open the drain.

Abstract: Flushing mechanism for providing both complete release of water from a tank, as well as partial removal of the water. The flushing mechanism is provided with an external tubular envelope, an evacuation orifice, an axially displaceable member, a lifting member, and an axially displaceable blocking element. The displaceable member includes an evacuation tube, and a valve for blocking the evacuation orifice the evacuation tube. The lower portion of the evacuation tube comprises a float, and the float includes a seat. The lifting member includes a push button, a transmission rod capable of being pushed by the push button, a pusher element, a lifting element for lifting the displaceable member, and a joint attaching the element to a lower portion of the transmission rod.

Abstract: The actuating device has a vertically displaceable trigger (9) which is mounted on a hood-shaped housing part (6a) of the drain valve (3). A lever (2), whose horizontal axis of rotation (5) is mounted on a float housing (6b), is pivoted with the trigger (9) in one or the other direction of rotation. To induce flushing, the trigger (9) is moved in the downward direction with a release knob (1) against the restoring force of a spring (24). The trigger (9) now engages a pivotable arm (9b), and the lever (2) is pivoted such that a valve tube (4) connected to the lever (2) is raised, and the valve opening (11i) is thus opened. If the release knob (1) is moved once again in the downward direction after a partial flushing, the trigger (9) will engage another pivot arm (2a), and the lever (2) will again be pivoted into the starting position, in which the outlet opening (11i) is closed.

Abstract: A pump comprising a flexible member defining at least part of a variable volume pumping chamber, an inlet valve to permit of liquid to enter the chamber thereby and an outlet valve to permit of liquid to leave the chamber thereby, and an operating member to deform the flexible member to vary the volume of the pumping chamber to pump liquid into and out of the chamber.

Abstract: A push button linkage in which a lever is tiltably actuable around a plurality of selectible axes as the consequence of an axial push on a single push rod. It finds its principal application as an actuator for a flush valve in a tank type commode or urinal installation.

Abstract: Disclosed is a push button apparatus for operating a flush valve or the like of a water closet, comprising button actuator means including a button and housing, said housing having a shank for passing through an opening in a water closet tank wall, the button having an actuator within and reciprocally movable relative to said housing shank. Means are provided for securing bracket means to the button shank in a predetermined orientation therewith. Means are provided for actuating lever arm means. Means on the bracket means and the lever actuating means for mounting the lever actuating means for pivotal movement relative to the bracket means upon reciprocal movement of the button actuator operatively contacting the cam means. The mounting means comprises pivot means and pivot socket means with means providing lateral access to the socket means.

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: A sanitary pan flush cistern which includes structure to permit full-flush or partial flush as required. The cistern is a conventional lidded container housing usual outlet valve on a valve-rod, a press-button in the lid to open the valve and a float-controlled water admission valve. It also houses a pot which in turn houses the outlet valve, and has a normally open doorway furnished with a lid. Linkage connects both the lid and the valve-rod to the press-button so that when the latter is pressed the valve is opened and a full flush passes the outlet valve from the pot and from the outer vessel by way of the normally-open door. When the press-button is lifted the outlet valve opens as before but the door is closed so that the flush is limited to the content of the pot. In accordance with the invention the linkage is length adjustable and the press-button preferably non-rotatable.

Abstract: A toilet-tank discharge valve has a main-valve body that can be lifted off of its face, by release-activating an auxiliary valve with an activating mechanism, as a consequence of negative water balance in an associated discharge compartment. A supplementary auxiliary valve is associated with the discharge compartment and opens at least briefly as a result of discontinuance activation of the activating mechanism, producing a positive water balance in the discharge compartment until the main-valve body closes. A valve of this type, with an auxiliary valve, makes it possible to discontinue the flushing process ahead of time. A shift mechanism in the connection between the activating mechanism and the supplementary auxiliary valve shifts the supplementary auxiliary valve from whatever limiting position it happens to be in into the opposite limiting position in response to a discontinuance activation.

Abstract: A sanitary pan flush cistern which includes structure to permit full-flush or partial flush as required. The cistern is a conventional lidded container housing usual outlet valve on a valve-rod, a press-button in the lid to open the valve and a float-controlled water admission valve. It also houses a pot which in turn houses the outlet valve, and has a normally open doorway furnished with a lid. Linkage connects both the lid and the valve-rod to the press-button so that when the latter is pressed the valve is opened and a full flush passes the outlet valve from the pot and from the outer vessel by way of the normally-open door. When the press-button is lifted the outlet valve opens as before but the door is closed so that the flush is limited to the content of the pot.

Abstract: A half-flush mechanism for a commode. The half-flush mechansim allows user control of the amount of water used in flushing the commode. Activation of the mechanism entails pushing of a button located in an otherwise conventional flush handle. The mechanism is always in the full flush mode and returns to the full flush mode until again activated by the pushing of the half-flush button. The half-flush mechanism is adaptable to a variety of commode designs and may be adjusted by the user to release varying amounts of water during the half-flush mode.

Abstract: A water tank located above a conventional toilet tank so as to flow water downward into the toilet tank; the water tank including a drain pipe downward into the toilet tank, a hinged cover on top, and a mechanism to flow the water outward therefrom into the toilet tank.

Abstract: This invention relates to a variable volume flushing cistern and in particular it relates to a cistern of the type in which a selection can be made of the amount of water discharged during a flush.

Abstract: A variable volume flushing cistern comprising a body with a division wall across it to form two compartments, the first containing a float and water inlet valve and communicating with a flushing valve on the base of the cistern, a second communicating through a movable flap with the flushing valve so that by closing the valve water from the second compartment can be prevented from discharging through the flushing valve when a smaller flush is required.