Flush regulator

. ~94/0l6~6 213 9 2 6 2 PCT/US93/OSX9O ; : Description ;~ Flush Regulator Technical Field A~flush regulator for use with a water closet to selectively control the flow of wa~er therefrom.

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Backyround Art Numerous devices have been developed to conserve flush : water selectively operable in either a full ~ sh or a partial flush. ~ ~ Typically ~oilets include a ~ank mounted above the toilet owl with bo~tom outlet in the tank. A flapper valve normally Gloses the:ou~let so that the tank can be filled. A float closes the valve when the selected water level is reached~ Toilets are designed so:that~a more than ade~uate amount of:~water is delivered ~o the bowl with each flush. .

Thus ; water can be saved by adJusting the amount of flush water discharged to~:accommodate for Lndividuai design~and.

install~tion.::~ Furthermore,::there:exis~s a need~for dispènsing ~ bleach, detergent,: dye or th~ like on an automatic basis into the .

toilet bowl.~ : ;:U.S.~ 4,032,9g7 shows a flush regulator for use in a : toilet flush tank to regulate the outflow ~rom the 1ush tank through an:outlet~ pipe:including a~water chamber means opening upwardly and an alr chamber means opening:downwardly. The chamber meaDs~ are symmetrLcally arranged with re psct to the :mounting portion.:~: ~ W~94J01626 2 1 3 9 2 6 2 PCT/US93/05~90 U.S. 3,156,930 describes a water saver f~r flush tank toilets wherein the pressure plate acts directly against the tank outlet valve such that the weight of the pressure plate causes the premature closing of the valve. The weight of the pressure plate aots to swing the valve downwardly mor~ quickly than would otherwise be the case in the event the pressure plate is not held in inoperative position.

U.S. 2,773,268 teaches a flushing apparatus including a tank having a bottom wall w~th an aperture therethrough forming a valve seat therein. The tank is configured to contain a liqiuid and includes a pivot connection therein spaced horizon-tally from the aperture. A valve member is positioned in overlying relation to the valve seat operable to control the discharge of liquid from the tank; while a valve actuating means comprising a bell crank lever with a first arm extends in a substantially horizontal plane and a second arm extending upwardly from and at an acute angle to the first arm. The bell crank lever includes a float member secured thereto. A container is secured to the second arm with a closed end adJacent to the tank bottom wall, with the valve member being secured to the first arm. The beill crank lever is pivotally secured~to the tan~ pivot connection so that the cienter of gravity of the valve assembly is in overlying relation to the~valve saat whein the tank and thei container are substantially filled with liqiuid thereby urging the valve member tioward a closed position and means to pivotally rotate the~bell crank lever so that the center cf gravity of the valve assembly will move to the opposite side of the pivot connection away from~the valve seal thus maintaining the valve~ member in an open position such that the valve assembly is operable upon~decrease in Iiquid level in the container to urge the valve member toward a closed position.

U~S. 3,142,846 shows a flush v lve for a flush tank with a discharge tube having a valve seat at the upper end thereof and an overflow tube~connected to the dischargie tube and offset therefrom. ~The valve comprises a pair of spaced pivot elements Iocated on opposite sides of`the overflow tube, a ~ : :

W094/0~626 2 1 3 ~ 2 ~ 2 PcT/us93/o589o . ` 3 U-shaped lever having its legs pivotally mounted on the pivot elements so as to straddle the overflow tube, a valve member carried by the U-shaped lever below the bight of the U and being normally adapted to seal against the valve sea~ and a hollow container mounted on one leg of the U-shaped l~ever and being positioned to move in a plane laterally offset from the overflow tube so ~hat there is no engagement between the hollow container and the overflow tube. The container has a restricted discharge orifice for providing a time delay between the time when the ~alve is first opened and the time when the valve recloses.

U.S. 1,126,080 describes a flush tank having a valve seat ; in the bottom thereof with a valve in the sea~, of a buoyant arm pivotally supported at one end and having its other end connected directly to the valve and means for unseating the vaIve.

U.S. 3,302,Z17 teaches an apparatus for actuating a flush valve on a water closet having a bowl and a tank for holding water which is discharged from the tank into the bowl to flush the bowl wherein the valve controls the flow of water from the ~: ~ tank into the bowl.

The valve is opened manually causing gravit~discharge of water from the tank into the bowl. When the tank has been emptied the valve closes and the tank is automatically refilled with water. The apparatus holds the ~rj; valve open while the tank is being discharged and permits the 7~: ~ valve to close when the desired low liquid level in the tank ~ has been reached.

The apparatus comprises a closed cylinder a ~ which is divided into two bodies by a partition which extends :: diametrically ac~oss the int:erior of the cylinder. The ~ cylinder is mounted for rotation about its central axis on a i~ horizontally extending shaft which may be mounted on a conventional overflow pipe with which water closet tanks are ~:: conventionally provided.

When in position, the cylinder is below the top:level of liquid in the tank and above the flush valve. ~ chain connects a conventional flush lever to a point : on the periphery of the cylinder and extends from that point to the flush valve which controls the flow of water from the ,'!: :

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, WO9~/0~626 2 1 3 9 2 6 2 PCT/US93/O~g90 tank into the water closet bowl. The length of the chain between the cylinder and the valve is such that when the valve is held closed by pressure of water in the tank, the partition within the cylinder is approximately horizontal, so that there is a ho~low body a~ove the axis of rotation of the cy~inder and a second body beneath the axis of rotation which comprises ~aterial having a density less than the density of water or which may be hollow. The lower body, if hollow, is empty and is both air and water tight. The upper hollow body has openings in its periphery so that when the water in the tank is at its top operatin~ level, the upper hollow body is filled with water. When the flush lever is manually actuated, the chain connectlng it with the cylinder is pulled, causing the cylinder to rotate about its horizontal axis approximately 90 in a direc~ion to open the valve. In this position of the cylinder the partition is approximately vertical and the two bodies are on opposite sides o the axis of rotation. So long as the water in the tank is above the bottom of the cylinder, the body having a density less than that of water will tend to rise in the water and thereby keep the valve open. When the water level in the tank drops beneath the bottom of the ~ cylinder, ~the weight of th~ water in the water filled hollow i~ body will tend to rotate the cylinder in the same direction, :~ keeping the val~e open. There are three openings in the hollow body containing water and they are positioned in the periphery of the body so that when the cylinder has been ;rotated to open the valve and the partition within the ylinder is approximately ver~ical, there is one opening at the~top of the hollow body, one opening at its bottom and one opening in its side. Therefore, as the level of the li~uid in the tank falls past the cylinder, water ~lows out of the side and bottom openings. However, these openings are so sized that all of the water does not drain out of the hollow body until the water in the tank has reached the desired low level.

At that point, weight of ~he valve will rotate the cylinder in the ~pposite direction approximately 90 and the valve wîll j ~ close~and be held closed by watPr flowing into the tank when ~ the float v~lve opens.

:`~ WO~4J01626 2 1 3 ~ 2 6 2 PCT/US~3/05890 U.S. 3,908,203 describes a t~o-level flush mechanism with a single flap valve to control both major and minor flushes.

This valve is connected to a float. When the valve is open and water is above the float the latter holds the valve open.

When water level falls below float it pushes valve closed unless the user holds the valve open by continued holdiny of the flushing handle.

U.S~ 3,775,77~ shows a device to selectively discharge substantially all or only a major portion of the water within the flush tank of a toilet. The device includes a single operator shiftable in a first direction from a rest position for discharging substantially all of the water in the flush tank ~nd in the opposite direction for discharging only a minor portion of ~the water within the flush tank.

U.S. 3,561,016 teaches a flush tank accessory selectively releasing substantlally all or a preselected portion of the water held in a toilet tank by means of a float which is held a predetermined distance above the valve member for selectively supporting the member. The falling water level within the~tank wlll therefore reduce the support on the valve when the water level reaches the float thereby causing the valve to close unless it is manually held open throughout the emptying of the tank.

U.S. 3,345,643 describes a cup arrangement ~or a flush~tank outlet valve temporarily weigh~ed by water from the tank to regulate~the escape of the weigh~ing water discharged from the flush tank before the valve closes.

U.S. 3,921,226~shows a flush valve regulator for the discharge control valve of a toiIet storage comprising a float cup with a recess in the lower end thereof configured to seat on the discharge valve. The regulator is provided with a surrounding wall about`the p~riphery of the bottom recess which encloses a top recess to be filled with water and has a sleeve extending through the float cup slidably recei~ing the stem of the discharge~vaive. When the stem i5 held in a raised position for a predetermined period of time, the entire conten~s of the s~torage tank is discharged. However, if the . ~ WO94/01626 Z 1 3 9 2 6 ~6 PCT~US93/0589 valve stem is lifted to start the discharge and then immediately released, the valve will be seated by the action of the float cup thereon and thus trap a part of the water in the tank to prevent its discharge.

U.S. 3,553,740 shows a float controlled valve fo~ a flushing cister including an open water level determining vessel in which the float member is freely suspended so as to form a pressure water chamber within the open vessel below the float member to be charged with cistern replenishing water flowing over the rim of the open vessel as the cistern :

approaches full capacity whereby pressure is developed in the chamber to impart a quick short lift to the float member and float arm suff1cient to close the valve, the water in the chamber being dischargeable in response to the succeeding flushing~ operation of the cistern.

U.S. 2,168,742 teaches a flush valve regulator comprising a tank having a flush outlet, a buoyant valve including a stem, means for guiding the stem and valve in reciprocable movements ab~e~the outlet, means for raising ~he stem and associated valve, stop means limiting upward movement above the~flush outlet and a chamber on the stem-submerged in the water of the tank. ~The chamber comprises vertically ad]ustable lower and upper shell members wherein the upper~ shell has apertures~for admission of water into the chamber and~the lower she11 member has abushing for frictional binding engagement~ upon the stem whereby the chamber may be adjusted longitudinally~of the stem.

U.S. 3,325,82:8 describes a tilting discharge vaI~e for a reservoir~such as~a toilet flush tank wherein the valve ~ ~ closure is~carried at the base of an overflaw tube adapted for pivotal mounti~g on the bottom of the reservoir, the tube càrrying the lower portion thereof, a pair of oppositely disposed open-top chambers, one of~the chambers being closed a~ the~bottom~and serving, when occupied by liquid, as a counter balance, while the other chamber has manually adjustable discharge means f~r controlling the speed of dis~harge of the reservoir. A buoyant air-trapping chamber is proYided to aocelerate;the opening of the valve~ . : ~ ~ :

WO94/01626 2 1 3 ~ 2 6 2 PcT/us93/o~89o U.S. 2,260,078 teaches a tank valve comprising a flexible hollow body having a substantially inverted cone-shaped lower portion wherein the lower portion has an open lower end and an upturned reinforcing flange formed around the open lower end and spaced from the sides of the body to provide a water-receiving channel into which water flow~ng by ~he valve will impinge to pull the inverted cone-like portion tightly upon a valve seat.

U.S. 2,214,439 describes a float valve comprising a stem, hollow valve fixed on the lower end, adjustable means to maintain water at a predetermined level in the valve and a float adjustable vertically on the stem. The valve consisting of a hollow elastic body, as a means for maintaining a water level~therein consisting of a tube engaged slidably through the lower part of the valve. The float comprises a chamber having a closed bottom and head and receiving head stem slidably therethrough. The stem being threaded, nuts being engaged;upon the stem over and under the float and means to seal the float around the stem.

U.S. 18,330 shows a flushing apparatus for a tank having a water inlet and a water outlet, a valve adapted to normally close the outlet, a float arranged within the tank and adapted to elevate the valve and release the contents of the tank, movable means for normally retaining the float in inopexative position and another float supported independently of and adapted ~o trip the means when the contents of the tank have reached a pre-determined level, the movements of the float and the means~ being in unlson solely during the tripping operation.~ ~ U.S. 3,790,968~describes a pair of laterally spaced float members supported on the lifting rod or valve stem at an adjusted or preferred elevation above a nonbuoyant and weighted valve mem~er threadedly attached to the lower end of the rod or stem.~ The valve member will operate in conjunction with either a ~lat or slanted valve seat. Smaller seats can also be accommodated by~mere~y selecting an intermediate ;~ angular position~o~ the valve member on the valve stem.

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U.S. 2,241,220 shows a flushing tank having an outflow passage and a valve for closing the passage.

The valve is configured to seat by gravity and a float for the valve adapted to drop with the level of the water in the flush tank to positively retard the seating of the valve until the water in the tank is level with the outflow passage. The float comprises a housing forming an i~ir chamber for floa~ing on the wàter in the tank having adjustable bracket connecting the float to the valve to adjust the float to the desired seating action of the valve.

U.S. 4,296,503 describes an apparatus for deodorizing and cleansing a toilet bowl in which a cake is floated on the surface of the water in the hold tank. The container retalnlng ~he detergent is adapted to drop as the water is exhausted during flushing to dispense the perfumed detergent into the water.

U.S. 4,370,763 shows an apparatus for dispensing bleach or detergent into a toilet tank or the like on a controlled basis comprising a dispenser immersed in the tank water subdivided into two approximately equal volume chambers. One chamber contains the bleach and the other contains a dye and a detergent.~`~The internal structure is such that a metered dose of a liquid solution formed from a block or cake of detergent , ~ or~bleach is automatically dispensed each time the toilet is flushed.

U.S. 2,736,039 disoloses a flush tank haviny a high liquid level and~a low liquid level, a vertical conduit having a~ lower~ dlscharge end disposed above the low liquid level of the tank together with upper and lower valve members carried by the conduit and disposed between the upper and lower liquid levels. Each of the valve members includes a float, said upper valve member~being in its open position when its float :~:

is raised and closed when its float is lowered and the lower valve member~being open when its float i~s float is lowered and open when its float is raised. A detergent supply is connected to the upper end of the conduit for supplying a detergent into the conduit past the upper valve member and up ~:

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W094/01626 PCT/USg3/05890 9 213926~ to the lower valve member when the water in the tank is up to its high liquid level. The upper valve member is closed and as the lower valve member is open as the water in the tank recedes to its low level whereby a detergent retained between the valve members will into the tank as the water in the tank recedes to its low liquid level.

U.S. 4,514,866 teaches a buoyant dispenser for delivery of a metered quantity of a dispensble material somprising a container having a central receptacle to hold the dispensable ma~erial, buoyancy means such as pontoons straddling the receptacle, a cover in fluid-tight engagement with the reoeptacle, an attitude guide means attached to the container that is adap~ed to be anohored to a wall of the fluid reservoir and a metering means in fluid registry with the receptacle to permlt controlled ingress and egress of the fluid and dispensable material. Preferably, the metering means comprises a pair of holes disposed in spaced apart reIation to each other and positioned to allow a predetermined quantity of dispensable material to escape from the receptacle. In one embodiment, the receptacle is divided into two compartments by a transverse partition and the metering means comprises holes communicating with one of the compartme~ts so that the dispensable material in that compartment is discharged when the dispenser is in the fully floating position. The present dispenser finds particular utility in fIuid reservoirs having cyclically variable -fluid levels and is particularly suiteds for use in the water tank : : :

of a domestic toilet apparatus.

U.S. 4,915,260 shows a fIoat controlled dispenser capable of~ segregatlng actlve~in~redients and dye and selectively releasingla predetermined amount of each into the tank of a toiiet. ~he dispenser comprices a float operated dispenser having the fluid disinfectant in the main body of the di.spenser and the dye in a separate portion of the dispenser.

A mixing chamber communicating with the tank water is pro~ided beneath the float so that, on the upstroke, water rising in the chamber serves to disso~ve the dye and raise the float. A ' :

WO9~/01626 2 1 ~ 9 2 6 2 PCT/US93/05890 ''~'' solution of dye and water is retained in the mixing chamber.

During the flush cycle, as the float is lowered on the downs~roke due to a decreasing water level in the tank, a measured amount of disinfectant is released from the body of the dispenser into a metering chamber on the 1Oat. ~s the ~loat rises with the water level and seals the dispenser orifice, this measured amount is transferred to the surrounding tank.

The dye mixture retained in the chamber is dispensed on the downstroke, at which time the decreasing water level in the toilet tank draws the mixture from the chamber into the tank.

U.S. 4,530,118 teaches a passive dispenser for containing a quality of solution isoIated from a body of liquid and for causing a predetermined volume of solution to issue from the dispenser solely under conditions of gravity f l ow in response to the level of the body of liquid being lowered from a first elevation to a second elevation. The dispenser comprises an upper section which is a cuplike member having an open bottom the lower peripheral edge being an annular channel, a lower section~which is a cuplike member having an open top. The cuplike members provide an internal reservoir for storage of cleaning solution formed upon dissolution of a water-soluble ~ :

cake ~ontained with said re ervoir. The ~op peripheral edge of the lower section is dlsposed within thP annular channel to define a dischargelrefill conduit connecting ~he reservoir with the body of~liquid and comprising two chambers in fluld communications~with each other. One chamber is adjacent to the reservo~ir to form an air trap chamber and the other is adjacent ~o the body of liquid to orm an air refill cham~er.

A transfer port connects the air trap and air refill chambers.

U.S. 3,913,151 discloses an apparatus for dispensing a metered quantity of deodorizing and/or cleansing liquid into a toilet bowl co~prising a liquid-containing reservoir inside the toilet tank.

The reservoir includes a metering chamber with lnput and exit~ports respectively actu ted by a pair of nest~d floats which extend downwardly into the toilet tank and ~ :

which are actuated, seriatim, by the rising level of water in ;the tank after~each flush.

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W094/01626 PCT/US93/058gO 11 213926~ Disclosure of Invention The present invention relates to a flush regulator for use with a water closet configured to selectively operate in a partial flush mode or a full flush mode. The water closet includes a flush drain aperture and a buoyant flapper~valve movable between an open and closed position by a flush handle movable between a first and second position to control the flow of water from the water closet through the flush drain aperture.

The flush regulator comprises a buoyant flush assembly movable between a first and second position including a float chamber comprising a hollow body partially filled with liquid to control the buoyance of the buoyant flush assembly and a dispensing means to operatively retain bleach/ detergent therein operatively mounted within the water closet by a mountin~ assembly.

The mounting assembly comprises a mounting bracket disposed either concentrically or eccentrically relative to the pivot axis of the buoyant flapper valve with either a single or double pivot point.

~`In use, the float chamber is disposed to engage the 1 ;buoyant flapper valve when the buoyant flapper valve is moved I ~ from the closed position to the open position as the flush handle is moved ~from the first position to the second position a~d released such that the flush regulator under the force of gravity will cause the buoyant flapper valve to prematurely return to~the closed posi~tion to operate in the partial flush mod~e~to discharge a first volume of water or when the flush handle is moved from the first position to the second position and is held in~the second position the buoyant flapper valve is,held in the open position to operate ln the full flush mode to discharge a second volume of water. Furthermore, when the flush handle is moved from the first position to the second position an~ released~à portion of the bleach/detergent from the dispensing means is dispersed into the water ~torage tank.

~ The invention accordingly comprises the features of construction, combi~ation of elements, and arrangement of WQ94/01626 21 3 9 2 6 2 PCT/US93/O~B90 12 parts which will be exemplified in the construction hereinafter set forth, and the scope of the invention will be indicated in the claims.

Brief ~escription of the Drawings For a fuller understanding of the nature and object of the invention, reference should be had to the following detailed l~ description taken in connection with the accompanying drawings ¦ in which:

~ Fig. 1 is a cross-sectional front view of a water closet I incorporating the flush regulator of the present invention.

Fig. 2 is a side view of a concentrically mounted, single pivot flush regulator completing the partial flush cycle with :

the flush control means in the second or lower position.

Fig. 3 is a side view of the concentrically mounted, single pivot flush regulator with the flush control means in the first or upper position when the water storage tank is fully charged.

Fig. 4 is a side view of a concentrically mountedj double ~ pivot~ flush regulator completing the partial flush cycle with ``~ the flush controi means in the second or lower position.

Fig. 5 is a~s~ide view of the concentrically mounted, double :plVOt ~flush regulator with~the flush control means in ;~ the first or upper;position when the water storage tank is fully charged.

;Fig. 6 is a perspective view of a first pivot means of the concentrically~mounted, double pivot flush regulator.

Fig. 7 is an exploded perspective view of an alternate embodiment of the first pivot means of the concentrically mounted, double pivot flush regulator.

Fig. 8 is a side view of an eccentrically mounted, single pivot flush regulator completing a partial flush cycle with the flush control means in the second or lower position.

Fig-. 9 ls a slde view of the eccentrically m~unted, single pivot~flush regulator with the flush~control means in the ~irs~ or upper position when the water storage tank is ful1y charged. ~ ~ ~ *:

` W094/~1626 2 1 3 9 2 6 2 ~CT/US93iOS~90 13 Fig. 10 is a side view of an alternate embodiment of an eccentrically mounted, sinyle pivot flush regulator completing a partial flush cycle with the flush control means in the second or lower portion.

Fig. 11 is a side view of the alternate embodiment of the eccentrically mounted, single pivot flush regulator with the flush control means in the first or upper position when the water storage tank is fully charged.

Fig. 12 is an exploded perspective view of the alternate embodimen-t of the eccentrically mounted, single pivot flush re~ulator shown in Figs. 10 and 11.

Fig. 13 is a slde view of an eccentrically mounted, double pivot flush regulator completing of a partial flush cycle with the flush control means in the second or lower position. ~ ~ Fig. 14 is a side view of the eccentrically mounted, .

double pivot flush regulator with the flush control means in the first or upper posltion when the water storage tank is fully charged.

; Fi~. 15 is;a cross-section view of a flush control means including a buoyance~control means to selectively control the air/water ratio and buoyance thereo.

Fig. 16 is a ~ross-section view of an alternate embodiment of a flush control means including a buoyance control means to selectively control the air/water ratio and buoyance thereof.

Fig. ~17 is~a cross-section view of another alternate embodiment~of a fIush control~means including buoyance contr~l means to selectively control the air/water ratio and buoyance thereof.~ Fig. 18 is a cross-section view of yet another alternate i embodiment of a flush control means including a buoyance cont;~ol means to selectively contrQl the air/water ratio and buoyance thereof.~ Fig. 19 is a cross-section view of a flush control means including a buoyance~control means to vary the volume and buoyance thereof. ~ ~ . ~ ~ : - : : : , W~94/0162~ 2 1 3 9 2 6 ~ PCT/US93/05890 14 Fig. 20 is a cross-section view of an alternate flush control means including a buoyance control means to vary the volume and buoyance thereof.

Fig. 21 is a cross-section view of an yet another flush control means including a buoyance control means to v~ry the volume and buoyance thereof.

Fig. 22 is a side view of an eccentrically mounted, single pivot flush regulator including a dispensing means completing a partial flush cycle with the flush control means in the second or lower position.

Fig. 23 is a side view of the the eccentrically mounted, singIe pivot flush regulator including the dispensing means with the flush control means in the first or upper position when the water s~orage tank is fully charged with the buoyan~ flapper valve in ~he upper or second position at the start of the flush cycle.

Fig. 24 is an exploded view of the the eccentric mounted, single pivot flush regulator including the dispensing means shown in Figs. 22 an~ 23.

Fig. ~5 is a cross-sectional side view of a eccentrically moun~ted, double pivot flush reguIator including a dispensing means with ~he flush control means in the first or upper position when the water storage tank is fully charged with the uoyant flapper valve in the upper or second position at the start of the fIush cycle.

Fig. 26 Ls a cross-sectional side view of the eccentrically mounted, double pivot flush regulator including the~dispensing~means completing a partial flush cycle with the fIush regula~or in the second or lower position.

Fig. 27 is a cross-sectLonal view of an alternate embodiment of the dispensing means.

,. ~j ( Fig. 28 is an exploded view of another alternate embodiment of the dispensing means.

~ ~ FLg. 29 is an exploded view of yet another alternate :~ embodiment o~ the dispe'nsing means.

Flg. 30 is a side view of the eccentrically mounted, sLngIe pivot flush regulator at various stages of the flush y~le.

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WO9~/01626 2 1 3 ~ 2 ~ 2 PCT/US93,05890 Similar reference characters refer to slmilar parts throughout the several views of the drawings.

Best Mode For Carrying Out the Invention As shown in Fig. l, the present invention relate~s to a flush regulator generally indicated as lO for use with a water closet generally indicated as 12 to selectively permit a full or partial flush of water frbm the water storage ~ank 14.

As shown in Fig. l, the water storage tank 14 is coupled to a toilet bowl (not shown) by a flush conduit l6. The water storage tank 14 is connected to a conventional water system (not shown) by an external water supply conduit l8. An internal water supply conduit 20, disposed within the water storage tank 14, is:coupled between the external water supply conduit 18 and a water supply control valve 22 of conventional construction. The water supply control valve 22 is coupled to a pivotally mounted control arm 24 having a float member 26 secured to the outer end thereof. The float member 26 tends .

to drop under the force of gravity to open the water supply control valve 22 without the support of water within the water storage tank 14. In conventional fashion as water is fed to : ; the~water storage supply tank:l4, the float member 26 rises moving~;the pivotally mounted control arm 24 upwardly. When the water within the water storage tank l4 reaches a predetermined level shown as~A in Fig~ l, the water supply con~rol valve~22 closes preventing additional water to flow to the~water storage tank 14 from the conventional water supply ( not shown )~ The water supply control valve 22 is connected to a first ~:and ~second water delivery ~oonduit indioatQd as 28 and 30::respectively~ ~During~the fill:cycle, water is fed ~: di,rectly to the~water storage tank l4 through the firs~ water delivery conduit 28 and to the second water delivery conduit : 30 through ~ an overf low: tube ~: 32 .

: As shown in Fig~. l, a buoyant flapper valve 34, coupled to the~ lower:;portlon of the overflow tube 32 by a~ nte~connecting~member 36 and having an air chamber 38 formed ;theréin, is disposed .to normally se l a flu~h outlat 40 to WO94/01626 2 1 3 9 2 6 2 PC~/US93/0589(~ 16 selectively control the flow of water from the water storage tank 14 to the flush conduit 16. The buoyant flapper valve 34 is interconnected to one end of a pivotally mounted flush arm 42 by a flexible interconnecting element 44; while, th~ opposite end of the pivotally mounted flush arm 42 i~ coupled ~o a flush handle 46 as in a conventional system. A ~ank cover or top 48 is placed on the top af the water storage tank 14.

As shown in Fig. 1, the flush regulator 10 comprises a flush control means or assembly generally indicated as 50 coupled to the overflow tube 32 by a mounting means or assembly generally indicated as 52. As described more fully hereinafter, the flush regulator 10 may comprise a single or double, eccentric or concentric pivot with or without bleach/detergent dispensing means.

Figs. 2 and 3 show a concentrically mounted, single pivot flush re~ulator 10. Specifically, the flush control means 50 comprises a flush control member 54 including a lower convex surface S6 to engage t~e buoyant flapper valve 34 as described hereinafter and the mounting means 52 comprises. at least one pivot arm 58 pi~otally coupled at one end thereof to thè overflow tube 32 by a first pivot means genarally indicated as 60~in concentric alignment with the pivot axis of the flexible intermediate member 36 of the buoyant flapper valve 34 and fixedly coupled~ to the flush control member 54 at the opposite end thereof.

Figs. 4 and 5 show concentrically mounted, double pivot flush regulator 10. Specifically, the flush control means 50 comprises a~1ush control member 54 including a lower convex surface 56 to engage the buoyant flapper valve 34 as described hereinafter and the mounting means 52 comprises at least one pivot arm 58 pivotal~ly coupled at one end thereof to the o~erflow tube 32 by a first pivot means generally indicated as 60 in concentric alignment with the pivot axis of the flexible intermediate member 36 of the flapper valve 34 and pivotally coupl~d to the flush control member 54 at the opposite end thereof by a second pivot means generally indicated as 62.

,, .. .... , , . ~ , W094/016~6 2 1 ~ 9 2 6 2 PCT/US93/~5890 17 As shown in Fig. 6, the first pivot means 60 comprises an annular mounting ring 64 operatively mounted on the lower portion of the over~low tube 32. A connecting member 66 extends outwardly from opposite sides of the annular moun~ing ring 64 to pass through apertures 68 and 70 formed on the inner end o the interconnecting member 36 and pivot arm 58 respectively to pivotally couple the buoyant flapper valve 34 and pivot arm 58 to the overflow tube 32.

As shown in Fig. 7, alternately the first pivot means 60 comprises an annular mounting ring 72 formed on the inner end of the interconnecting member 36 operatively mounted on the lower portion of ~he overflow tube 32 and mounting tabs 74 including an aperture 76 in combination with an aperture 78 formed on the inner end of each pivot arm 58 and a corresponding mountlng pin 80 passed throu~h the corresponding aperture 78 and the corresponding aperture 76 to pivotally couple the buoyant flapper valve 34 and pivot arms 58 to the overflow tube 32.

A8 best shown in Fig. 7, the second pivot means 62 comprises a hollow connector 82 and a connector pin 84 passing through an aperture 86 formed through the flush control member 54 and configured to operatively couple to each other.

Figs. 8 and 9~ show an eccentrically mounted, single pivot flush regulator 10. Specifically, the flush control means 50 comprises a flush control member 54 including a lower convex ;surface 56 to engage: the buoyant flapper valve 34 as described hereinafter and ~he mounting means 52 comprises a`mounting element~generally~indicated as~88 coupled at one end thsreof to~the over10w tube 32 and~pivotally coupled to the flush ~ co~trol member:~:54 at~the opposite end thereof by a pivot means 90 similar to the second pivot means 62 disclosed in Figs. 6 and 7 and in eccentric alignment with the pivot axis 92 of the buoyant flapper valve 34.

Figs. 10 through 12 show an alternate embodiment o an eccentrically~mounted, single pivot flush regulator 10.

Specifically, the flush control means 50 comp~ises a flush control member 54 includlng a lower convex surface 56 having a W094/01626 2 1 ~ 9 2 6 2 PCT/US93/05~go 18 sleeve including a pair of sleeve members each indicated as 94 including a peripheral arcuate convex surface 96 pivotally coupled to opposite sides of the flush control member 54 by a pin 98 extending through corresponding apertures lO0 formed on opposite sides of the flush control member 54 to engage the flapper valve 34 as described hereinafter. The moun~ing element 88 comprising a mounting bracket generally indicated as 102 including an annular mounting ring 104 coupled to the overflow tube 32 and a pair of mounting tabs each indicated as 106 coupled with to a corresponding pair o mounting apertures each indicated as 108 formed on opposite sides of the flush control member 54 disposed in eccentric alignment with the pivot axis 92 of the buoyant flapper valve 34.

Figs. 13 and 14 show an eccentrically mounted, double pivot flush regulator 10. Specifically, the flush control means 50 comprises a flush control member 54 including a lower convex surface 56 to engage the buoyant ~lapper valve 34 as described hereinafter and a mounting means 52 comprising at least one pivot arm 58 pivotally coupled at one end thereof to the overflow tube 32 by a first pivot means generally indica~ed as 60 similar to that shown in Fig. 6 and further including an annular mounting ring 64 in eccentric alignment with the pivot axis 92 of the flexible intermediate member 36 of the buoyant flapper valve 34 and pivotally coupled to ~he : :

; flush control member 54 at the opposite end thereof by a second pivot:means general~y indicated as 62 similar to that shown in Figs. 6::and 7.

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Fi~s.:~15 through:21 show a flush con~rol member including various buoyance control means to selectively control the weight and/or buoyan~e thereo As shown in~Fiy. 15, the flush control member 112 comprises a hollow body 1l4 and a buoyance control means generally indicated as 116. The buoyance control means 116 comprises at least one aperture 118 formed on the upper portion of the hollow body 114 and a sealing cap 120 including a co~responding closure pin 122 to selectively seal the corresponding:aperture lI8. This permits the selective WO94/01~6 2 1 3 9 2 6 2 PCT/us93/05890 19 addition of water or other weight creating means to the hollow body 114 to control the weight and buoyance of the flush control member 112 through the aperture 118.

As shown in Fig. 16, the flush control member 112 comprises a hollow body 114 and ~i buoyance control me~ns generally indicated as 124. The buoyance control means 124 comprises an aperture 126 formed on the lower portion of the hollow body 114 and a one-way check valve 128 to selectively seal the aperture 126. This permits the addition of water to the hollow body 114 to control the weight and buoyance of the flush control membe~ 114 by depressing and forcing the hollow body 114 into the water to add water to the hollow body 114.

As shown in Fig. 17, the flush control member 112 comprises a hollow body 114 having an air vent 130 formed therein and a buoyance control means comprising a plurality of apertures each indicated as 132 formed on ~he upper portion thereof including a corresponding plurality of closure means such ai removable adhesive strips each indicated as 133 to selectively seal one or more of the apertures 132. This permits the;addition of water to the hollow body 114 to control the weiyht and buoyance of the ~lush control member 112~by opening~one or more of the apertures 132 such that the hollow body 114 allows water to flow to and from the hollow body 114 as the hollow body 114 rotates durin~ the flush and f;ill cycles.~ : As shown in~Fig. 18, the flush control member 112 compri~es a hollow body 118 having an air vent 130 formed therein and a buoyance~control means comprising ~ plurality of apertures èa~h~indicated as 134 formed on the lower portion ther~o:~and a sealing~member o~ plate 136 rotatably attach~d to the side of the hollow body 114 by a connecting pin 138.

This permits the addition of water to the hollow body 114 to cont;rol the weight and buoyan~e of the fl~sh control member by sele~tively rota~ing the sealing member or pla~e 136 to selec~ively~seal~or close one or more of the apertures 134 to cont~ol the flow of water to and from the hollow body 114 during the:~lush and fill cycIes.

WO94~01626 ~ 1 3 9 2 6 2 PCT/US93/05890 ~~ As shown in Figs. 19 through 21, the flush control member generally indicated as 140 comprises a first and second flush control element indicated as 142 and 144 respectively pivotally coupled to each other by a connecting means 146 to permit relative movement therebetween. The lower su~faces 148 and 150 of the first and second flush control element 142 and 144 respectively are sized and configured to form a friction fit be~ween the first and second flush control element 142 and 144 to retain the relative position therebetween when manually adiusted or moved. By positioning the first and second flush control elements 142 and 144 relative to each other, the volume of tank water displaced is cont~olled thereby controlling the buoyance of the flush control member 140.

Figs. 22~ through 29 show different flush control regulators lO including a bleach/de~ergent dispensing means.

In each embodiment, water enters and leaves the dispersing means through apertures or slots to disperse bleach and/or detergent into the water storage tank 14.

Figs. 22 through Z4 show an eccentrically mounted, single pivot flush regulator 10 including a bleach/detergent dispensing means. Specifically, the flush control means 50 comprises a flush con~rol member generally indicated as 152 to engage the buoyant flapper valve 34 as described hereinafter and a mountng means generally indicated as 154. The flush control member 152 comprises a hollow body 156 including a channel 158 formed in the s~ide~thereof~having a plate 160 including a series or plurallty~o mounting apertures each indicated as 162 interonnected by interconnecting slots or passages each indicated as 164 to receive the flexible interconnecting element 44 therethrough, and a top or cap 166 removably mounted to the top of the hollow body 156 including a slot 168 disposed in registry with the channel 158 and a plurality of dispensing apertures~l70~formed therethrough to cooperatively retain a cake~l72~of bleach and/or detergent therein. The mounting means~ 154 comprises a pair of mounting arms or alements each indicated as 174 extending outwardly from the hollow body 1S6 , ~ disposed on opposite sides of the overflow tube 32.

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WO94/01626 2 1 3 9 2 6 2 PcT/us93/o589o 21 Figs. 25 and 26 show a concentrically mounted, double pivot disposable flush regulator lO including a dispensing means. Speciically, the flush control means 50 comprises a hollow flush control member 54 having a bleach/detergent cake 172 disposed therein and including first aperture or vent 176 formed in the upper portion thereof and a second aperture or vent 178 formed in a lower convex surface 56 to engage the buoyant flapper valve 34 as described hereinafter. The mounting means 52 comprises at least one pivot arm 58 pivotally coupled at one end thereof to the overflow tube 32 by a first pivot means generally indicated as 60 in concentric alignment with the pivot axts 92 of the flexible intermediate member 36 of the buoyant flapper valve 34 and pivotally coupled to the flush control member 54 at the opposite end thereof by a second pivot means generally indicated as 62.

Fig. 27 shows a flush control means 50 comprising a hollow flush control member 54 and a replacable dispenser means comprising a~hollow dispenser member 180 including a plurality of apertures each indicated as 182 formed in the periphery thereof to house or retain a cake 172 of bleach and/or detergent. The hollow dispenser member 180 is :

detachabl~ coupled to the hollow~flush control member 54 by a plurality of connecting pins each indicated as 184 press fitted into corresponding apertures each indicat~d as 186 formed in the hollow flush control member 54.

Fig. 28 shows a flush control means 50 comprising a flush control member 112 similar to the flush control member 112 shown in Fig. 17 and a replacable dispensing means comprising hollow dispenser member 188 including a plurality of apertures each indicated~;as 190 to house or retain bleach and/or detergent therein mounted on a frame generally indicated as j 192. The frame 192 comprlses a base plate 194 having a mounting member 196 extending outwardly from opposite sides thereof to ~eGeive a mounting aperture 198 formed in the 1ush control member~lI2 and hollow~dlspenser member 188 and a support flange 200 disposad relative to the mounting member `196 to engage and~support the flush control member 112 and W094/016~6 213 9 2 ~ ~ 22 PCT/US93/05B90 hollow dispenser member 188. ~ connector or coupling member 202 extends outwardly from opposite sides of the base plate 194 to receive a corresponding connecting pin 84 similar to the mounting means shown in Figs. 6 and 7. A stop or limit member 204 is disposed adjacent each connector or coupling member 202 to engage the corresponding pivot arm 58.

; Fig. 29 shows a flush control means 50 comprising a hollow flush control member 54 and a replacable dispensing means comprising a first and seoond dispenser element generally indicated as 206 and 208 respectively configured to be removably mounted within a retaining channel 210 formed ~ ~ through opposite sides of the hollow flush control 54.

,~ Specifically, the first and second dispenser element 206 and ; 208 each comprises an inner cylindrical sleeve 212 to cooperatively form a chamber to operatively house the cake 172 wi~h the retaining channel 210 and an outer cap 214 each including a plurality of slots or apertures each indicated as 216.

As shown in Fig. 1, when the~water storage tank 14 is fully charged, the water level A will support the float member 26 causing the buoyant flapper valve 32 to seal the flush outlet 40. In use, the buoyant flapper valve 32 is moved to the open position as shown in phantom in Fig. 30 by actuating the flush handle 46 engaging the flush control means 50. The combined buoyance of the ~lush regulator 10 and buoyant flapper~;valve 34 is less than the buoyance of the buoyant flapper valve 34. Thus as water fIows from the water storage tank l~ through the flush outlet 40, the flush control means ~ 50~orces or causes the buoyant flapper valve 34 to ; ~ p~ematurely r~turn to sealLng ~ relationship with the flush outlet 40 resulting in a partial flush of a reduced voluma of water shown as B in Fig. 1.

To~operate in the full 1ush mode, the flush handle 46 is moved`and hald in the second position until tha water is ~ flushed from~the water storage tank 14 as indicated by C in f~i ~ Fig~ :~ :~ '~ ~ ' :

W094/0}626 2 1 3 9 2 6 ~ PCT/US93/05890 23 As shown in Figs. 22 through 29, movement of the flush control means 50/152 during the flush cycle causes wa~er to flow therethrough to disperse bleach and detergent therefrom.

As shown in Fig. 30, the lower surface 56 of the flush control member 54 slidingly engages the upper surfac~ of the buoyant flapper valve 34 during the flush cycle. As shown in Figs. 10 thrcugh 12, the arcuate convex surface 96 of the sleeve member 94 are provided to reduce slidin~ friction between the flush control member 54 and the buoyant flapper valve 34.

It will thus be seen that the objects set forth above, among those made apparent from the preceding description are ; ~ efficiently attained and since certain changes may be made in the above construction without departing from the scope of the invention, it is intended that all matter contained in the above description or shown in the accompanying drawing shall be interpreted as illustra~ive and not in a limiting sense.

;~ - It is also to be understood that the following claims are . ~ intended to cover all of the generic and specific features of the invention herein described, and all statements of the scope of the invention which, as a matter of language, might be said to fall therebetween.

Now~that the invention: has been described, ~ :

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