Abstract: A toilet tank cover comprises two decorative figures. Discharge from the vent orifice of a cup type float valve flows up through the primary figure and out an exterior orifice to the secondary figure. The primary figure receives water discharge from the discharge vent of a cup type float valve. The discharge then flows through the primary figure to an emission point. At the emission point, the fluid is directed toward an opening in the second figure. The discharge flows through the secondary figure and drains directly into the waste standpipe of the toilet. The operation of the flush mechanism of the toilet is thereby monitored in an aesthetically pleasing fashion.

Abstract: A flush control device for toilet comprises a water discharging member, a control member and a stepped check member disposed at their relative position in a water tank. The stepped check member is composed of a plurality of damper plates in different size and co-axially engaged in a lug means adjacent a water outlet. The damper plates each has a first shoulder of different heights at their front sides toward a outlet valve. So that the damper plates rotate in accordance with the variation of the water level in the tank to check the outlet valve to open a different span so as to discharge a selective amount of flush water into a toilet bowl.

Abstract: A dump bucket toilet is described, with an improved support for the bucket, a manual control that can save water, and an outlet region which efficiently directs dumped water into the toilet bowl. A support (60, FIG. 1) for the bucket has a mount portion (62) mounted on an upper portion of the toilet tank and has a largely downwardly extending support portion (100), the support portion pivotally supporting the middle of a rod (104) that extends between the opposite sides of the bucket. A manually operable control (152, FIG. 5) is operable in a full-flush mode to pivot the bucket by a first angle to a full release position to release almost all bucket water, the control being operable in a second partial-flush mode to pivot the bucket by a smaller second angle to release about half of the bucket water. A funnel (24, FIG. 1) extends at least four inches above the bottom of the container, with the funnel walls forming an included angle of about 14.degree. to efficiently direct the dumped water.

Abstract: In a housing to be fastened to the bottom of a flushing tank, a float, which is arranged approximately centrally on a closing member mounted displaceably in the housing, is arranged under a partition extending horizontally in the flush tank. A sealing body is arranged at a lower end of the closing member. The partition forms a unit with a chamber arranged on its underside, and the unit is detachably inserted from the top into the housing, which is open at the top. The present invention simplifies the automatic mounting as well as the inspection of the drain valve and the more universal and therefore less expensive use of the valve housing.

Abstract: A toilet reservoir water dumping valve for sealing the reservoir's water outlet by hydraulic pressure and for controlling the water volume to be flushed. The dumping valve is situated in the toilet reservoir at the water outlet to the toilet bowl, the dumping valve comprising a membrane housing, and a rod connected to a flush valve. In a first position, when the flush lever is in OFF position, the membrane disconnects communication between the supply line and the reservoir. Simultaneously, the rod is pressed by hydraulic pressure, tightly pushing a flush valve against the reservoir exit. In a second position, when the water is flushed, the membrane opens communication between the supply line and the reservoir, reducing the pressure on the rod, such that the rod pulls the flush valve away from the reservoir outlet, permitting water to be flushed down the toilet bowl.

Abstract: A gravity flush toilet system includes a fixture with a water sealed trap and a tank having an overflow tube, a flush valve and a fill valve. A control assembly includes a float assembly with a member for pushing the flush valve toward its closed position as the water level descends. A full volume or a reduced volume flushing operation is selected by alternatively filling or emptying a bias chamber of the float assembly. Water pressure variations are compensated for by increasing the weight of the float with part of the flow through the fill valve as the tank is emptying. A regulated volume of reseal water is carried in a chamber on the float and is discharged into the overflow tube to refill the fixture trap after each flushing operation.

Abstract: There is disclosed a level control valve arrangement preferably for use in a water closet cistern for controlling the liquid level in the cistern or container. The arrangement has a liquid inlet (3) feeding an inlet chamber (1) and a movable valve member (7,10) mounted on a seating (11,12) and movable between an open position in which liquid flows from the inlet into the cistern and a closed position in which liquid is prevented from flowing into the cistern. The movable valve member is biased preferably by a float arm into the closed position in response to liquid in the cistern rising to a predetermined level. The movable valve member (7,10) is mounted in the inlet chamber into which water is fed from the inlet (3) and in the closed position the valve is acted upon by a head of water in the inlet chamber to maintain the movable valve member in the closed position.

Abstract: An assembly for connecting a plumbing conduit to a wall is disclosed. In one aspect there is an outlet formed in a wall of the tank and a resilient seal bearing against an inner surface of the wall around the outlet. The seal has a bore aligned with the outlet. A connector tube sandwiches the seal against the wall and also extends through the bore and outlet. The connector is held in place by a radially outwardly extending flange and a locking ring inside the connector.

Abstract: The drain valve (1) has a valve tube (26) as well as an insert (37) with a float (38) in a valve housing (36). The float (38) is connected with the valve tube (26). In the bottom (49) of the insert (37) openings (39, 41a) are provided, which can be made to index by rotating a punched disk (40). For setting or resetting the flush water quantity, the punched disk (40) can be rotated by raising and turning the valve tube (26). Cogs (43) of the punched disk (40) will then engage in corresponding cutouts (45) at the lower end of the valve tube (26).

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 flush valve for a conventional toilet which replaces the conventional flapper valve assembly and seat and operates in conjunction with the standard ballcock valve. A hollow annular drain stopper seat is connected to the upper end of a male threaded cylindrical shank secured in the drain outlet opening of the tank that communicates with the bowl. A stopper fits in a central passage of the drain stopper seat and may be lifted so that water from the tank drains into the bowl through the central passage. At the same time, high pressure water is injected downwardly and tangentially into the central passage through a plurality of circumferentially spaced orifices in the interior cylindrical wall of the drain stopper seat. Water is supplied under pressure from the ballcock valve through a filler hose to an upper pressure chamber in the drain stopper seat that communicates with the orifices.

Abstract: A flush valve extension assembly retrofittable to a conventional water closet is disclosed which comprises a tube having a shoulder member extending outward from the outer surface of the tube in a position to form an upper section of the first tube having a predetermined length and to form a lower section of the tube which can extend into the flush valve seat, the shoulder member being sized to seat on the valve seat; a gasket fittable about the outer surface of the lower section in a position to form a water tight seal between the shoulder member and the flush valve seat; and a means fixable to the tube and extending about the overflow tube in a manner to attach the tube to the flush valve.

Abstract: A mechanism for multiplying rotation. The mechanism includes two armatures of differing lengths which rotate about different centers of rotation. The armatures are coupled together such that a rotation of one armature will produce a multiplied rotation in the other armature. The multiplying mechanism has particular application with a valve assembly of the type used in self-contained sanitary systems of recreational vehicles. The valve assembly includes a seal element having a sealing lip directed toward generally inward and downward of a fill opening a valve blade in the holding tank. The sealing lip terminates in a downwardly and outwardly oriented flange. The valve blade is actuatable through two movements. The first movement moves the valve blade generally vertically into and out of engagement with the seal element. The second movement moves the valve blade generally horizontally to a position out of registry with the fill opening.

Abstract: An assembly is provided for replacing part or all of a toilet flush valve, which facilitates mounting in a variety of toilets and which enables saving of water. The assembly includes an adapter (30, FIG. 6) for mounting on older types of overflow tubes, which includes a ring member (70) having a gap (72) and a leaf spring (80) extending across the gap. After the adapter is moved down along the overflow tube and lies at its base, the spring is pushed in to cause a hook (84) at one end to ride along a ramp (90) from a second tooth (88) to a third tooth (92) and engage the third tooth, to tightly clamp the ring member in place to prevent turning. A closing delay cup (116, FIG. 9) that can be used on a valve member, includes a plurality of holes and at least one plug (126) that is molded to the cup and can be cut off and used to plug one of the holes (120) to adjust the amount of water saved in each flushing. A valve member includes a tank ball having an enlargement (160, FIG.

Abstract: A flush valve water accelerator having a top opening of increased height to reduce the amount of water used by a toilet, and which accelerates the flow of water to increase the efficacy of the water in the toilet bowl. The device is comprised of an entry tube and an exit tube, with the exit tube having a minimum inside diameter of approximately fifty (50) percent of the median inside diameter of the entry tube to accelerate the flow of water into the toilet bowl without causing cavitation from the vacuum created by the restriction of the exit tube. A connecting tube, having a decreasing inside diameter, connects the entry tube and the exit tube.

Abstract: The overflow tube and ball valve of a conventional water tank are replaced with a collapsible tube, one end of which is located above the water outlet of the tank, and the other end of which is located above the water line in the tank and able to be compressed to allow water to flow through the tube thereby flushing the tank. The volume of water expelled from the tank is controlled by choosing an appropriate amount of compression. The compressed tube returns to its original height after flushing. In one embodiment of the invention, a handle on the exterior of the tank cover is used to compress the tube in a plunger-like motion. The handle is provided with markings corresponding to the amount of water flushed for a given vertical displacement of the handle. In another embodiment of the invention, a lever is positioned on the front wall of the tank and is able to cause rotation of a cantilever beam. At the free end of the beam is a connection to a vertical rod which is depressed by rotation of the lever.

Abstract: A water conserving toilet tank adapter device (10) is provided for use in tank reservoirs (14) of conventional toilets (12). The adapter (10) is a retrofit device for insertion into the tank outlet (18) which effectively raises the level of the drain so as to reduce the amount of water utilized in each flushing cycle. The adapter (10) includes; an outlet tube portion (30) having an interior diameter which is less than that of the tank outlet (18); a swirl disk portion (32), having swirl grooves (46) formed on a construction slope (44) for imparting angular velocity to flush water flowing therethrough; an extension portion (34) for raising the effective drain height; and a flapper rod portion (36) for supporting a conventional ball flap valve (24). An adaptive ring (38) is provided to assure a watertight seal with angularly arrayed tank outlets (18).

Abstract: A toilet flushing apparatus designed to prevent excess loss of water that may happen when the flush valve stays open as the inlet valve is putting water into the tank. The initial flushing lifts the flush valve which acts in conjunction with a counter-weight and controller arm attached to the float ball arm. The controller arm supports the float ball and thus allows the intake valve to remain in the closed position until the flush valve has closed completely, at which time the float ball is lowered and water is let in to the tank.

Abstract: An assembly is provided for replacing part or all of a toilet flush valve, which facilitates mounting in a variety of toilets and which enables saving of water. The assembly includes an adapter (30, FIG. 6) for mounting on older types of overflow tubes, which includes a ring member (70) having a gap (72) and a leaf spring (80) extending across the gap. After the adapter is moved down along the overflow tube and lies at its base, the spring is pushed in to cause a hook (84) at one end to ride along a ramp (90) from a second tooth (88) to a third tooth (92) and engage the third tooth, to tightly clamp the ring member in place to prevent turning. A closing delay cup (116, FIG. 9) that can be used on a valve member, includes a plurality of holes and at least one plug (126) that is molded to the cup and can be cut off and used to plug one of the holes (120) to adjust the amount of water saved in each flushing. A valve member includes a tank ball having an enlargement (160, FIG.

Abstract: An assembly is provided for replacing part or all of a toilet flush valve, which facilitates mounting in a variety of toilets and which enables saving of water. The assembly includes an adapter (30, FIG. 6) for mounting on older types of overflow tubes, which includes a ring member (70) having a gap (72l ) and a leaf spring (80) extending across the gap. After the adapter is moved down along the overflow tube and lies at its base, the spring is pushed in to cause a hook (84) at one end to ride along a ramp (90) from a second tooth (88) to a third tooth (92) and engage the third tooth, to tightly clamp the ring member in place to prevent turning. A closing delay cup (116, FIG. 9) that can be used on a valve member, includes a plurality of holes and at least one plug (126) that is molded to the cup and can be cut off and used to plug one of the holes (120) to adjust the amount of water saved in each flushing. A valve member includes a tank ball having an enlargement (160, FIG.

Abstract: A flush mechanism for toilets comprises a water supply control device and a water escape control device independently disposed in a flush tank. The mechanism is actuated to flush by raising a plunger to lift a piston of the water escape position from its normally closed position to its open position allowing water flow from the tank to a toilet bowl associated therewith and maintain that position by vacuum suction.

Abstract: A toilet flush mechanism comprising a tank holding a water supply and having a valve for flushing a toilet bowl a handle for opening the valve to the toilet bowl for initiating the flushing actions, a water supply entering the tank near the bottom of said tank, for replacing the water in the tank including a flexible tube connected to the supply the extending into the tank, said tube having a first curved portion for carrying the water into the tank, a second bendable portion for controlling the flow of water into the tank and a third extended portion for supplying the flow of water into the tank, and a blout and rod responsive to the water level in the tank for flexing said tube to control water flow into the tank which rises and falls with the water supply level, the rod extending along and being independent of the third portion of said tube, the rod being connected at the other end to the second portion of the tube adjacent the bendable portion thereof for bending said tube in response to movement of said

Abstract: A universal recreational vehicle toilet system with a removable waste holding tank is provided to enable the recreational vehicle manufacturer to have wide latitude in the positioning of the toilet within a recreational vehicle. The toilet system includes an upper section containing the toilet bowl and a lower section forming a base upon which the bowl section is supported in spaced relation above the recreational vehicle floor. A holding tank is partially or fully inserted in the base section and coupled to the toilet bowl for receiving waste therefrom. The holding tank is removable through an opening in the sidewall of the recreational vehicle for disposal of waste.

Abstract: The flush valve adapter (32) has a tubular body with a lower threaded section (36) which engages a connection ring (70) permanently mounted to an upper section of jetway (72). A seal is created between the tank (10), flush valve adapter (32) and jetway (72). The adapter (32) has an upper threaded section (40) which engages a bottom threaded end (30) of a standard flush valve. A coaxially spaced sealing ring section (48) has a groove (62) that seats an O-ring (64) that seals against the bottom section (30) of the flush valve to create a seal therebetween. A lock nut (78) is also threaded onto section (30) and abuts against top shoulder (41) of the adapter (32) to lock the flush valve into place onto the adapter member (32).

Abstract: The body of a recreational vehicle (RV) is configured to have a stowage compartment within the body's interior but separate from the interior occupant space. The stowage compartment contains a tank which serves water use fixtures in the interior occupant space. The stowage compartment is disposed adjacent the sidewall of the RV body and an opening is provided through the sidewall from the stowage space to the exterior. This opening is closed by a door. When the door is open, the tank can pass through the opening into and out of the stowage space. The tank can be either a fresh water tank containing a supply of fresh water for use at sanitary fixtures in the RV or alternatively it can be a waste water tank of either the gray water or black water type which collects waste from the water use fixtures.

Abstract: The invention relates to a device for the actuation of the valve of a flush tank: a movable vertical tube (8) carries a valve (7). A linking rod (9) controls the movement of the tube, a lever (12) operates the linking rod, a member (16) operates a rod (15), which in turn controls the lever (12). The rod (15) is connected to the lever (12) and to the operating member (16), the operating member having two positions, one being the opening position (26), and the other one being the closing position (27), and the passage of the member from one to the other one of these positions, controlled by the user, bring about the correlative passage of the valve (7) from one (26") to the other one (27") of the positions and inversely.

Abstract: An improved flushing means is disclosed for use in water tanks such as are for flushing toilets. The flushing means has a water inlet with an improved two-stage valve using inlet line pressure for operating the two stages. A float is movably mounted on the inlet for controlling the valve with a lever operatively coupling the float to the first stage of the valve. A cooperating vertical hollow and floating overflow tube including an adjustable bowl filling siphon controls the tank discharge to the bowl. These improvements to the tank discharge to the bowl are also to be incorporated into the commonly used flapper-type flush valve.

Abstract: The body of a recreational vehicle (RV) is disclosed with a stowage compartment within the body interior but separated from the interior occupant space. The stowage compartment contains a tank which serves as a waste holding tank for a water use sanitary toilet within the RV. The stowage compartment is partially disposed beneath the toilet and has an opening provided through the sidewall from the stowage space to the exterior. The opening is displaced longitudinally relative to the toilet such that when moving the waste holding tank into and out of the stowage compartment, the tank travels in a generally horizontal arcuate path. The holding tank is curved as seen in a plan view to accommodate the arcuate path. A track guide in the stowage compartment guides the path of the tank.

Abstract: A dual flush mechanism which allows the user to select either a full or partial flush, while using a single flush valve. A full flush is obtained by a first handle which lifts a flush valve actuating arm to unseat the flush valve in a conventional manner. For a partial flush, a second handle rotates and lifts a partial-flush control arm which extends beneath the flush valve actuating arm. Upward movement of the partial-flush control arm is limited. Release of the second handle permits the control arm to rotate downwards until stopped by the engagement of a portion of the control arm with a transversely extending lever extension, thereby keeping the flush valve in an unseated position. As the tank water lever lowers, a partial-flush float also lowers, pulling down the end of a lever which pivots so as to linearly retract the lever extension from engagement with the partial-flush control arm. This permits the control arm to drop, reseating the flush valve.

Abstract: A reversible buoyant and non-buoyant flush tank valve is adapted for use in various types of flush tanks each having different selective valve operating attachments for moving the valve. The valve for use in one type of tank includes an elongated base with opposite end portions with a valve operating attachment selectivity at one end for opening and closing the valve. The other end portion of the valve is selectively attachable to the overflow pipe. The base has opposite sides with a vertically extending hollow frusto-conical cup member on one side. When the valve is used in another type of tank the opposite end portions are removed for connecting a vertical rod valve operating attachment to a first and second oppositely disposed bores to selectively position the cup member upwardly for non-buoyant operation or downwardly for buoyant operation.

Abstract: A waste tank for a vacuum sewage system comprises a top wall having a major portion and also having a generally cylindrical dome structure which projects upwardly from the major portion of the top wall. The horizontal sectional area of the dome is substantially smaller than the maximum horizontal sectional area of the tank. The top wall is formed in the dome structure with an inlet opening for admitting air and sewage to the tank and an outlet opening for exhausting air from the tank.

Abstract: A trim assembly for a water closet is disclosed. The water closet includes a tank, a bowl, a passage communicating the tank and bowl, a plurality of rim wash ports in the bowl and a trap between the bowl and an outlet. The trim assembly includes a manifold with an inlet and first and second outlets. The first outlet is coupled to a control valve with a main valve controlling flow to a control valve chamber. The control valve chamber includes first and second outlets and pressurized fluid introduced in the control valve chamber is simultaneously communicated to these outlets. The first outlet in the valve chamber is in fluid communication with the rim wash ports and the second outlet in the valve chamber is in fluid communication with a jet ring. Flow to the first and second outlets in the valve chamber is simultaneously commenced by lifting a valve member off a pilot port in the valve chamber.

Abstract: A flush valve system for a water storage tank. The system includes a standpipe which establishes both an upper water level and a repose water level. A tank valve receives water for the tank. It includes bi-stable control means which retains the most recent condition pertaining to a level higher than the repose level, or a lower level respective to drainage of stored water. The valve will therefore remain closed while the water is drained, until the water level reaches the lower level. The standpipe may include foldable segments which enable its length to be adjustably varied.

Abstract: A self-contained sanitary fixture, particularly for a recreational vehicle, comprises a bench supported on a base cooperatively defining a stowage compartment. The bench contains a bowl having an outlet which connects to a tank in the stowage compartment. A valve on the tank controls passage between the bowl and the tank. The valve is itself operated from a knob on the bench through a coupling mechanism. Waste water from the bowl is collected in the tank and is disposed of by sliding the tank out of the stowage compartment through an opening in the RV's sidewall and carrying the tank to a suitable disposal site. The tank incorporates a rotatable pourspout and vent valve to facilitate pouring waste contents out of the tank. The connections between the bowl outlet and the tank and between the knob and valve automatically disconnect upon removal of the tank from the stowage compartment. Similarly they automatically reconnect when the tank is inserted back into the stowage compartment.

Abstract: Savings in water consumption are obtained and problems with leakage are avoided by using a water-closet valve which is made of flexible air- and water-tight material and has not only a generally frustoconical seat-engaging portion provided with a pair of circumferential rings or protuberances so as to permit the formation of a double seal but also an interior hollow portion such that towards the end of a flushing operation there is produced within the valve member a partial vacuum which creates a thrust force to perfect the sealing of the valve member within its seat.

Abstract: A hydraulically operated drain valve is interposed in the cleaning fluid path before the spray/rinse outlet. The fluid under pressure activates a piston which operates the drain valve. A precharge reservoir is also interposed in the supply line before the spray rinse outlet to store a measured precharge which drains into the tank after the drain valve has closed. A manual override is provided to open the drain valve in the event of a failure of the hydraulic system.

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 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 flush valve assembly for use in the water storage tank of a toilet, the closing speed of which can be controlled and adjusted to seal the storage tank as soon as the trap in the toilet bowl has been refilled, thereby preventing water loss from an overfilled trap. A valve cup having a float is rotatably mounted within a housing and has an elongated horizontal slot or the like near the lower edge. The valve cup contains water when the storage tank is full, and upon initiation of a flush cycle, the float engages an abutment which is secured to the valve shaft and retards the rate of descent of the valve shaft by floating downwardly on the water in the valve cup as this water drains from the horizontal slot. The valve cup can be rotated to variably restrict the slot, thereby increasing or decreasing the rate of descent of the valve shaft to seal the tank as soon as the trap has been refilled.

Abstract: A self-contained replacement flush valve assembly has an annular valve seat member which is sealed to the original valve seat by an elastomeric sealing ring, the valve seat member being clamped in position by a toggle assembly mounted on a screw carried by a frame received in the cistern outlet tube. The frame is of H-shape and its upper limbs are pivotally connected to the valve seat member, the lower limbs having a sliding engagement with pivoted arms of the toggle assembly to resist rotation of the toggle assembly. The toggle arms are pivotally retracted during insertion of the toggle assembly and frame into the outlet tube, but fall into extended positions so that on tightening the screw the arms clamp against the lower end of the outlet tube.

Abstract: A water toilet has a valve arrangement of the integrated type, i.e. the float and all valves form a unit which in its mounted position is connected to the outlet pipe of the flush water container. According to the invention the unit is loosely connected to said pipe and mechanically retained at its top end by means cooperating with the inner surface of the top portion of the water container wall.

Abstract: A flush valve connectable to a wall of a toilet tank is disclosed. In one embodiment, there is a non-circular outlet formed in the bottom wall of the tank. There is also a resilient seal bearing against an upper surface of the bottom wall, the seal surrounding the outlet and having a central bore aligned therewith. A flush valve is provided having a housing that extends through the seal bore and outlet. The housing also has an outwardly extending flange above the seal to trap the seal against the bottom wall, and a radially outwardly extending projection below the bottom wall. The housing is rotatable between a first position in which the projection can pass vertically through the outlet, and a second position where the projection can catch under the bottom wall.

Abstract: An improved water closet valve is provided having two separate and distinct circular sealing rings interposed between the valve bulb and the conical opening which constitutes the valve seat. Both sealing rings may be secured to the bulb; both may be secured to the conical opening or one may be secured to the valve bulb and another to the surface of the conical opening. When the valve is in a closed position, at least two distinct spaced-apart seals are provided to obstruct the flow of water.

Abstract: A flexible valve element in the form of a flexible diaphragm movable between open and closed positions for opening or closing the drain. By operation of a control pressure chamber formed over the outer or exterior side of the diaphragm and which operates directly by application or pressure or vacuum to the same to move the diaphragm between the open and closed position. A control valve provides the connection from the control chamber to the passenger cabin to provide operating pressure for closing the valve and is alternatively connectable to an accumulator which stores vacuum normally supplied from a source such as that applied to the downstream side of the drain. The control valve is preferably operated by a solenoid which responds to an electrical signal. A manual override system is provided for closing the valve by hand.

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: A demand type flush tank control for saving water by the utilization of a water release valve of the flapper type in the water storage tank of a toilet, with such flapper valve being non-buoyant such that it will close off the flow of water from the tank into the toilet the instant the flush handle has been released by the user. In this way, the use of the entire contents of the tank is prevented, except on those occasions where a full tank is actually needed. My novel flapper valve has no air pocket below the sealing area, as do conventional flapper valves, and it is non-buoyant in that a cavity is provided in the upper part of the valve, through which water can enter a part of the valve body. Accordingly, my novel flapper valve readily returns to its seat the moment the toilet handle is released, thereby effecting a daily savings of many gallons of water.

Abstract: A flush valve adapted to be mounted to the bottom of a tank. The flush valve has a body with a drain conduit and an opening which can be opened and closed by a movable plug. The body has an internal thread in the drain conduit. A mounting seal has a flange that bears against the tank bottom and a skirt that fits in the drain port in the tank. An expander has an external thread which engages the internal thread, and also has a tapered expander section that enters and diametrally enlarges the skirt when the threads are progressively engaged. Enlargement of the skirt makes a fluid-tight seal and exerts a force which holds the body of the tank. Torque-tool engagement surfaces are formed in the expander so it can be turned.

Abstract: A flush valve mounting permitting adjustment of water flow to the requirements of different types of toilet bowl comprises a housing in which a float container with a float therein is removably emplaced. The lower portion of the housing has window apertures through which water can flow from the flush tank into a drain upon lifting of the pipe which carries the valve plate. A wall extending downwardly from the floor of the float container abuts the interior of the window openings, and this wall itself has through-flow apertures separated by webs formed by the wall. The openings in the window apertures are diminished by rotating the float container relative to the housing. This permits the water flow to be adjusted to the requirements of the particular toilet bowl.

Abstract: A normally-open two stage float valve for use with a suction tube leading om a vehicle fuel tank. As the fuel tank begins to run dry it is desired that the float valve close off the tank to the suction force. The valve of this invention includes a float-operated pilot valve element that equalizes forces on the opposite faces of the main valve element as the float moves through its actuation stroke. A lifting head is associated with the pilot valve element for mechanically lifting or lowering the main valve element relative to the main seat when the forces have been equalized.

Abstract: A hydraulically operated drain valve is interposed in the cleaning fluid path before the spray/rinse outlet. The fluid under pressure activates a piston which operates the drain valve. A precharge reservoir is also interposed in the supply line before the spray rinse outlet to store a measured precharge which drains into the tank after the drain valve has closed. A manual override is provided to open the drain valve in the event of a failure of the hydraulic system.