Float Type Patents (Class 4/395)
  • Publication number: 20150082530
    Abstract: A flush water volume regulator is provided, capable of canceling the buoyancy force acting on a water reservoir, wherein flush water in the water reservoir can be circulated with flush water in a flush water tank outside the water reservoir. The flush water volume regulator of the present invention has a water reservoir capable of holding a predetermined amount of flush water, having a water reservoir in which an opening is formed through which flush water inside water reservoir and flush water outside water reservoir can flow, and a float prevention means for causing a force to act on water reservoir in the opposite direction to the buoyancy force produced by flush water on water reservoir in flush water tank when water supply apparatus is supplying water into flush water tank.
    Type: Application
    Filed: September 8, 2014
    Publication date: March 26, 2015
    Applicant: TOTO LTD.
    Inventors: Koki SHINOHARA, Hideki TANIMOTO
  • Publication number: 20150074894
    Abstract: Controls for use in association with the main tank of a toilet include a container which is disposed in the main tank and holds a body of water. A float is movable in the container to expel water from the container and effect operation of an inlet valve from a closed condition to an open condition. Water flows into an inlet compartment and into the main tank when the inlet valve is in the open condition. Water flows into an outlet compartment after a predetermined quantity of water has accumulated in the inlet compartment. Water flows from the outlet compartment into the container.
    Type: Application
    Filed: September 3, 2014
    Publication date: March 19, 2015
    Inventor: Jonathan S. Kim
  • Patent number: 8667619
    Abstract: A water saving device for a toilet adapted for mounting on an overflow tube above a flapper valve. The device uses a mainframe connected to the overflow tube to position a highchair that is pivotally mounted to the mainframe. A water cup is mounted to the highchair for weight and a vertical cam descends from the highchair to contact and close the flapper valve.
    Type: Grant
    Filed: January 13, 2011
    Date of Patent: March 11, 2014
    Inventors: Terrance Monty Roberts, Brad Waldack
  • Publication number: 20130283514
    Abstract: A toilet tank flush valve structure includes a valve base. A float assembly is movable relative to the valve base between a sealing position and a flushing position, the float assembly being adjustable in buoyancy. An overflow tube is attached to the float assembly and extends upward from a lower end in fluid communication with the water outflow passage of the valve base to an upper end in fluid communication with the interior space of the toilet tank. The upper end of the overflow tube is adjustable relative to the float assembly independently of the buoyancy of the float assembly. A guide member extends upward from the valve base for guiding movement of the float assembly relative to the valve base. A stop member is mounted on the guide member at a location above the float assembly for limiting upward travel of the float assembly from its sealing position.
    Type: Application
    Filed: April 25, 2012
    Publication date: October 31, 2013
    Inventor: Douglas P. Hand
  • Publication number: 20130227774
    Abstract: The present invention discloses an inlet structure of water-storing keg float, comprises an inlet, an outlet pipe and a water-storing keg float with a storage tank, and the inlet is provided with a channel passing through the outlet pipe, and the channel is provided with a water-storing cavity and a guide hole, and the guide hole is communicated with the water-storing cavity and the outside wall of the outlet pipe. Because water-storing cavity is present, part of water from the inlet can be stored in the water-storing cavity because of gravity, and this part of water fully enters the storage tank of the keg float through the guide hole, and the keg float can be balanced effectively under different water pressure conditions, and the stability of the keg float is enhanced.
    Type: Application
    Filed: November 7, 2011
    Publication date: September 5, 2013
    Inventors: Feiyu Li, Dongsheng Yao, Yuzhi Liu
  • Publication number: 20130167294
    Abstract: A toilet flushing device including a sliding conduct extending upwardly and rising above the maximum water level into a cistern; a flexible sleeve; a base support extending from beyond the bottom surface of the cistern; a floating mechanism for moving the sliding conduct upwards along an external guide cylinder; a first fixing mechanism fixing the flexible sleeve to the sliding conduct; a second fixing mechanism fixing the flexible sleeve to the base support; the external guide cylinder having a length sufficient to rise above maximum water level into the cistern; a first stopping mechanism for preventing the sliding conduct from moving upwardly beyond the external guide cylinder; a second stopping mechanism for preventing the sliding conduct from descending beyond the base support; and, a detention system for maintaining the sliding conduct at the bottom of the cistern until the water level reaches a predefined level.
    Type: Application
    Filed: January 3, 2012
    Publication date: July 4, 2013
    Inventors: José Jaime Preciado-Villanueva, Adolfo Preciado-Chacón
  • Publication number: 20130025040
    Abstract: A low-water-flow toilet having a toilet body, a funnel, a floating ball with a pull wire, water sealing structures, a toilet seat with a rotating shaft, an upper cover, and a plastic fender cover. The water sealing structures include an inner water sealing trap (11) of the toilet body, an outer water sealing trap (12) of the toilet body, a rotating groove arranged on the inner side of the inner water sealing trap (11), and a rotating groove arranged on an outer side of the outer water sealing trap (11). A low-water-flow urinal, having a urine storage bottle (18), a funnel having a water sealing trap (20), a floating ball with a pull wire and a pull ring (21), and an upper cover (23) of the urine storage bottle.
    Type: Application
    Filed: September 28, 2012
    Publication date: January 31, 2013
    Applicant: Tianjin Wanlu Limited Company of Science and Technology
    Inventor: Tianjin Wanlu Limited Company of Science and Technology
  • Patent number: 8307594
    Abstract: Disclosed are a toilet flapper and associated methods. In one representative embodiment, a flapper is provided having an upper side and a sealing side, the sealing side including a sealing surface. A dome protrudes from the sealing side at a middle of the sealing surface. Also, an opening of the dome is positioned in the upper side of the flapper. A float is employed with the flapper.
    Type: Grant
    Filed: May 5, 2009
    Date of Patent: November 13, 2012
    Assignee: MJSI, Inc.
    Inventors: Michael J. Schuster, Douglas C. Saunders
  • Patent number: 8250681
    Abstract: A flush valve is provided for discharging fluid from a tank. The flush valve includes a flapper. The flapper includes a frame portion and a hollow float portion rotatably connected to the frame portion. A relative rotational position between the frame portion and the float portion adjusts at least one opening formed between the frame portion and the float portion, and controls an amount of fluid discharged from the tank by variably adjusting buoyancy of the flapper.
    Type: Grant
    Filed: May 1, 2008
    Date of Patent: August 28, 2012
    Assignee: Fluidmaster, Inc.
    Inventor: Joseph Han
  • Patent number: 8185976
    Abstract: A flush valve is provided for flushing a toilet bowl. The flush valve includes a center tube having a lug, a flush activation device configured to initially raise the center tube, at least one latching mechanism configured to control movement of the center tube, and at least one rack configured to have movement controlled by the at least one latching mechanism. The at least one latching mechanism controls volume of fluid used during a flush.
    Type: Grant
    Filed: July 14, 2008
    Date of Patent: May 29, 2012
    Assignee: Fluidmaster, Inc.
    Inventors: Tuan Le, Bryan Janish, Robert Collin, Bill DeKeyser
  • Publication number: 20120047644
    Abstract: A Toilet Flushing System using Wastewater (10) includes a mounting bracket assembly (24) for mounting within the tank (12) of a conventional water closet. The assembly (24) uses a release float (28) to rise with tank water level and eventually release a main float (26) when the tank water level reaches float release level. The main float (26), when released will cause a shutoff plunger (50) to engage a valve retaining arm (51) to release the valve release arm (56) and thereby shut off fresh water flow into the tank (12), and also activate flapper valve (34) to release flushing water into the toilet. Water is introduced into the tank (12) either via the fill valve (60) or via a drain pipe (10) interconnecting a gray water supply from the drain (16) of an adjacent sink basin (16).
    Type: Application
    Filed: August 30, 2010
    Publication date: March 1, 2012
    Inventor: Ralph Larson
  • Patent number: 7992232
    Abstract: A device for controlling valve travel of the flush valve of a toilet operated by a rigid linkage rod and for forcibly returning the valve to the closed position. The device may comprise a spring contained within a sleeve. The sleeve has end caps bearing openings for passing the rigid linkage rod entirely through the sleeve and spring. One end cap may be threaded to enable it to compress and immobilize the spring for selectively defeating operation.
    Type: Grant
    Filed: October 14, 2009
    Date of Patent: August 9, 2011
    Inventor: Paul A. Stone
  • Publication number: 20110162135
    Abstract: Flapper tank ball pendulum comprised a buoyant hollow ball which has a small bottom opening, a handle which is fixed at the top of buoyant hollow ball and a fenestrated cone-shaped shell which is fixed at the bottom of buoyant hollow ball. One can easily fasten its handle onto lever of toilet flushing unit. Flapper tank ball pendulum can be lifted by pushing downwards pushing handle of toilet flushing unit to drain whole tank of toilet water to flush human solid waste and also can be pushed downwards by elevating manually pushing handle of toilet flushing unit to close drainpipe of toilet water tank to stop draining toilet water. Only about one quarter of water in toilet water tank is enough to flush human liquid waste. Human urinate several times a day and defecate only once a day. Flapper tank ball pendulum can replace flapper tank ball to save huge amount of water to solve the shortage of water supplies in big cities in the States.
    Type: Application
    Filed: January 5, 2010
    Publication date: July 7, 2011
    Inventor: Kun Yuan Tong
  • Patent number: 7937782
    Abstract: A water saving device for a flush toilet comprising a flapper valve limit structure which yieldably limits the upward movement of a toilet tank flapper valve after it has been moved upwardly from its lower closed position towards its upper position thereby reducing the amount of water which will be discharged from the water tank into the toilet bowl during a flushing cycle.
    Type: Grant
    Filed: April 16, 2008
    Date of Patent: May 10, 2011
    Inventor: Darby J. Vosler
  • Publication number: 20110099703
    Abstract: A toilet flusher for use with a toilet tank that has a fill valve and a bottom drain hole allowing water to flow out controlled by a toilet flush valve, the flusher being installable as the toilet flush valve and including: a longitudinally extendable siphon tube extending longitudinally from a drain hole fitting to a tube inlet with-in a float, such that, when sealingly attached to the tank drain hole by a drain hole fitting, the siphon tube will longitudinally extend upward as it is pulled up by the float floating on water in the tank. The flusher further includes: a float chamber around the tube inlet, the chamber being closed above a top edge of the tube inlet and open below it; floatation means that positions the floating float with the top edge of the tube inlet above the water and the chamber opening below the water.
    Type: Application
    Filed: July 1, 2009
    Publication date: May 5, 2011
    Inventors: Walter G. Berry, III, David A. Pierson
  • Publication number: 20110035868
    Abstract: A flush regulator for a toilet tank for regulating the outflow therefrom through an outlet, said regulator including a valve without buoyancy, said valve adapted to close said outlet, a connector connected at one end to said valve and a body of buoyancy at another end of said connector above said valve, said valve adapted to close said outlet when the water level in said tank reaches the upper edge of said body of buoyancy and said buoyancy and valve fall to close said outlet wherein said toilet tank includes an overflow pipe wherein said body of buoyancy is connected to the overflow pipe by a plurality of attachment points and wherein the height of the body of buoyancy is varied by attaching the body of buoyancy using one of the plurality of attachment points so as to adjust the height of the body of buoyancy relative to said valve.
    Type: Application
    Filed: August 13, 2009
    Publication date: February 17, 2011
    Inventors: Lisbeth Pedersen Sylvestre, Nils Uwe Karstensen
  • Patent number: 7870868
    Abstract: An apparatus and method for capturing filtered rainwater during wet weather, storing the filtered rainwater in an elevated storage tank, conveying the filtered rainwater by gravity to a toilet tank and controlling its introduction into the toilet tank. The apparatus preferably comprises an inline filter for installation in a horizontal or sloping section of a rain gutter, a storage tank that is mountable at an elevation higher than the elevation of the toilet tank, water transfer tubing or piping for conveyance of filtered rainwater to the storage tank, water supply tubing or piping for conveyance of stored water to the toilet tank, and a control valve for introducing the stored water into the toilet tank when it is needed. In a preferred embodiment, the components of the apparatus are provided to the consumer in the form of an easily installed kit.
    Type: Grant
    Filed: April 26, 2007
    Date of Patent: January 18, 2011
    Inventor: Gary K. Ilalaole
  • Publication number: 20100024114
    Abstract: A toilet tank flush valve structure includes a valve base for installation in the outlet hole formed in the floor of a toilet tank and defining a water outflow passage and including a first valve member at the upper end of the water outflow passage. A float assembly is movable relative to the valve base between a sealing position in which a second valve member at a lower end of the float assembly engages the first valve member in sealing relationship and a flushing position in which the second valve member is spaced upwardly from the first valve member. The float assembly includes an outer shell that is open downwards and has a lower edge at which the shell is provided with the second valve member, and a closure member within the outer shell and cooperating with the outer shell to define a float chamber. The closure member is adjustable in position relative to the outer shell, whereby the float chamber is adjustable in volume.
    Type: Application
    Filed: October 12, 2009
    Publication date: February 4, 2010
    Inventor: Douglas P. Hand
  • Publication number: 20090100586
    Abstract: A non-pressurized fresh water supply flushing system for a marine sanitation device is disclosed. The flushing system includes a fresh water reservoir having a predetermined capacity for holding a predetermined volume of fresh water, a mounting arrangement for mounting the fresh water reservoir to a support surface, a fresh water source associated with the fresh water reservoir for supplying fresh water to this fresh water reservoir and a fluid connection fitting for transferring the predetermined volume of renewable non-pressurized fresh water from the fresh water reservoir to the marine sanitation device upon activation of the marine sanitation device. A method of retrofitting an existing marine sanitation device and a kit for supplying a marine sanitation device with the fresh water supply flushing system of the invention is also disclosed. The fresh water flushing system of the invention may be used with toilets located in a variety of limited space environments.
    Type: Application
    Filed: October 23, 2007
    Publication date: April 23, 2009
    Inventor: Gene E. Conley
  • Publication number: 20090083902
    Abstract: A toilet flush water supply device for supplying flush water to a flush water tank of a flush toilet is disclosed. The toilet flush water supply device comprises a water supply pipe connected to an external water supply source, a water supply valve for switching between spouting and stopping of flush water supplied from the water supply pipe into the flush water tank, a float for switching between the spouting and stopping of the above water supply valve by a vertical movement thereof linked to fluctuations in the flush water level within the flush water tank, and a float guide disposed on the outer surface of the water supply pipe for guiding the vertical motion of the float.
    Type: Application
    Filed: September 25, 2008
    Publication date: April 2, 2009
    Applicants: TOTO LTD., VORETO (XIAMEN) PLUMBING TECHNOLOGY CO., LTD.
    Inventors: Eiji Fukuzawa, Yoshinobu Uchimura, Qing Zhang, Shan Lin, Fu Shan Chen
  • Publication number: 20090007324
    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.
    Type: Application
    Filed: August 7, 2006
    Publication date: January 8, 2009
    Applicant: ABERTAX RESEARCH & DEVELOPMENT LTD.
    Inventors: Joseph Pule, Joseph Cilia, George Schembri, Werner Schmidt
  • Patent number: 7415736
    Abstract: A flush regulator for retrofit use in a toilet tank for regulating the outflow therefrom through an outlet, said regulator including a flap valve without buoyancy, said flap valve adapted to close said outlet, a rod connected at one end to said flap valve and a body of buoyancy at another end of said rod above said flap valve, said flap valve adapted to close said outlet when the water level in said tank reaches the upper edge of said body of buoyancy and said buoyancy and flap valve fall to close said outlet.
    Type: Grant
    Filed: July 9, 2004
    Date of Patent: August 26, 2008
    Inventors: Lisbeth Pedersen Sylvester, Nils Karstensen
  • Patent number: 7185374
    Abstract: A discharge valve for toilet tanks comprising a flexible ringed hose held by a couple covering a center hole of the toilet tank and a handle connecting to a wire wrapping around an upper part of the flexible ringed hose. The wire connected to the handle bends and submerge the flexible ringed hose into the liquid inside the toilet tank when the handle pulls the wire upwards thereby allowing liquid to enter the flexible ringed hose to flush the toilet bowl. The liquid stops flowing to the toilet bowl when the flexible ringed hose goes back to its original vertical position when the pull on the wire is released and when the level of the liquid inside the tank is below the top opening of the flexible ringed hose.
    Type: Grant
    Filed: September 11, 2002
    Date of Patent: March 6, 2007
    Inventor: Edmundo Simental Rodriguez
  • Patent number: 6810902
    Abstract: A control circuit for a plumbing device that has a drain line and a water supply line includes a water sensor generating a potential overflow level signal in response to the water level in the plumbing device caused from a restricted drain line, an electrically controlled valve coupled to the drain line, and a controller coupled to the water sensor and the valve. The controller closes the valve in response to the potential overflow level signal.
    Type: Grant
    Filed: January 14, 2003
    Date of Patent: November 2, 2004
    Inventor: Anthony M. Bootka
  • Publication number: 20030213054
    Abstract: A water-stop plug for adjusting water-draining of a stool comprises a cover, a water-stop washer, a small washer and a plug. The water supply of the water-stop plug for adjusting water-draining of a stool is adjustable according to the requirement of the user so as to save supplied water. By adjusting an air hole on a plug, the supplied water is adjustable.
    Type: Application
    Filed: May 20, 2002
    Publication date: November 20, 2003
    Inventor: So-Mal Huang
  • Patent number: 6381764
    Abstract: A flush tank has a tube fitted to a downwardly open outlet and having an upper end vertically displaceable in the tank. A float fixed to the tube can switch between a low buoyancy insufficient to hold the tube upper end above the liquid level and a high buoyancy capable of holding the tube upper end above a liquid level in the tank. An actuating rod has an upper end and can engage vertically downward against the float to submerge same and changed it from high buoyancy to low buoyancy so the tube upper end sinks below the liquid level and the liquid in the tank flows through the tube out of the outlet. Stops on the tube and on the rod are engageable for limiting downward displacement of the float and tube to an intermediate position and are disengageable to allow downward displacement of the float and tube.
    Type: Grant
    Filed: February 2, 2001
    Date of Patent: May 7, 2002
    Assignee: Grohedal GmbH & Co. KG
    Inventor: Ulrich Stahlhut
  • Patent number: 6237164
    Abstract: A toilet supply tank assembly having high performance flush characteristics is designed to maximize water pressure over the flush valve and to minimize fluid turbulence within the tank during a flush cycle. The tank includes a bottom interior surface which tapers downwardly from the outer edges thereof to an fluid escape opening, and may include a cylindrical tank having a frusto-conical bottom portion with the fluid escape opening at the most narrow portion thereof. In order to further reduce turbulence created by water flow within the tank during a flush cycle, a cylindrical flush valve plunger having a frusto-conical stopper portion is provided which has no abrupt transitions. The tank may also include at least three vertical partitions intersecting a common axis which not only provide a cage in which the flush valve plunger can slide up and down, but also prevent the water from swirling and forming an energy robbing vortex.
    Type: Grant
    Filed: July 26, 1999
    Date of Patent: May 29, 2001
    Inventors: Joseph A. LaFontaine, Brent D. Barnett, Daniel T. LaFontaine
  • Patent number: 6199221
    Abstract: A flush tank having a downwardly open outlet and a valve for filling the tank with a liquid has a flush valve having a tube fitted to the outlet and having an upper end vertically displaceable in the tank. A float fixed to the tube upper tube end has a buoyancy changeable between a high buoyancy capable of holding the tube upper end above a liquid level in the tank and a low buoyancy insufficient to hold the tube upper end above the liquid level. An actuator connected to the float can temporarily change the float from high buoyancy to low buoyancy and thereby sink the tube upper end below the liquid level and cause the is liquid in the tank to flow through the tube out of the outlet. The float has a lower part annularly surrounding the tube and an upper part formed as an upper space having a large upwardly open mouth level with the upper end of the tube and a small opening below its mouth opening into the tube.
    Type: Grant
    Filed: February 3, 2000
    Date of Patent: March 13, 2001
    Assignee: Dal-Georg Rost & Sohne Sanitaramaturen GmbH
    Inventor: Ulrich Stahlhut
  • Patent number: 6151725
    Abstract: A toilet tank capable of use in combination with a toilet or commode to allow improved flushing operations. The toilet tank comprises a smooth inner surface and a formed bottom portion defining a tank evacuation hole at a base of the conical portion. A flush ball head will seat into a sealed position over the tank evacuation hole, guided by the tank walls. The flush ball may be weighted while the remaining, generally tubular flusher element may be left hollow to facilitate a generally vertical orientation of the entire flusher.
    Type: Grant
    Filed: November 10, 1998
    Date of Patent: November 28, 2000
    Inventor: Alfonso Di Stefano
  • Patent number: 6112763
    Abstract: There is described a valve arrangement which in one form is an inlet valve (60) or in another form is a dual flush valve (2). The valves may be used in a variety of situations but find particular application in a cistern for providing water to flush a toilet bowl or similar. The valve arrangement (2) comprises a flushing tube (100) or a pair of flushing tubes (14, 18) which can move axially. One end of the tubes (100, 18) is sealed to an outlet (9). The tubes are provided with rings or collars (16, 22) which co-operatively engage with locking edges (48, 50) of floats (40, 44) to control movement of the tubes (100, 14, 18). The floats (40, 44) are mounted off-center or in a position spaced apart from their respective centers of gravity so that they are free to move under the effects of gravity and the effects of lift provided by buoyancy of the floats.
    Type: Grant
    Filed: February 2, 1998
    Date of Patent: September 5, 2000
    Assignee: Muriel Ann Orbell
    Inventor: Joseph R. Orbell
  • Patent number: 5966749
    Abstract: A pivotable toilet flush valve member (10) is provided, of the type that includes a float (40) with a pair of holes (44, 52) that allow the float to fill with water during a flushing to close early, and where the float can be turned to vary the amount of water used during a flushing, wherein the float is constructed for easy and loose mounting on a frame (12) and for low friction rotation about a primarily vertical axis (60), and where the flush valve member has a simple detent mechanism to hold the float at any rotational position to which it is turned. The frame has an aperture (74) lying along the primarily vertical axis, and the float has a small diameter upwardly extending projection (70) that projects upwardly through the frame aperture and that is held by the walls of the aperture, for low friction turning. The detent mechanism includes an upstanding wall (100) with an upwardly-open vertical groove (102) that has a plurality of teeth on at least one side of the groove.
    Type: Grant
    Filed: October 27, 1997
    Date of Patent: October 19, 1999
    Assignee: Fluidmaster, Inc.
    Inventors: Kent Goesling, Oscar R. Dufau, John McKay, Steven E. Maple, Adolf Schoepe
  • Patent number: 5848442
    Abstract: A flush valve is connectable to a vertical wall of a toilet tank. An overflow tubular member is in fluid communication with the flush valve housing and there are clip members mounted on the overflow member for connection with a flapper valve. In a preferred manner, the clip members are mounted on the back side of the overflow member whereby the overflow member acts as a guide, as well as a stop for the flapper valve.
    Type: Grant
    Filed: November 5, 1997
    Date of Patent: December 15, 1998
    Assignee: Kohler Co.
    Inventor: Peter W. Denzin
  • Patent number: 5494001
    Abstract: A canine lavatory of modular construction for effective toilet training and continued use. A suitable site is selected and the dog is trained to relieve itself at-the site (typical training for a dog) and the lavatory enclosure is gradually built therearound after the dog has become enured to use the particular site. The lavatory comprises an enclosure with an open, readily accessible entrance having a flushing activating member for automatic activation by the entrance of the dog within the enclosure. The lavatory further comprises flushing and gravity dependent drainage systems. The flushing mechanism is adapted to be activated to fill to level and then to automatically trip flush. The filling and flush trip are adjustably timed according to dog habit and need. With the timed fill and self flush, the water fill system is completely purged of above-ground residual water to prevent freezing in an outdoor facility.
    Type: Grant
    Filed: October 19, 1994
    Date of Patent: February 27, 1996
    Inventor: Jake Leibowitz
  • Patent number: 5333332
    Abstract: A selective volume flush apparatus (10) for use in a cistern contains two valves, a first valve (12) with an outlet opening into the discharge outlet of the cistern and an open end configured to sealingly engage a first valve seal (18). The valve seal (18) is attached to a lifting device (22) and the open end of the valve (12) is positioned at a height from the cistern floor to facilitate the flush of a smaller quantity of water. The second valve 14 includes a diaphragm 26 positioned slidingly movable in a cylinder and attached to a valve seal (20) at the lower end and to a lifting device (24) at the upper end. The valve seal sealingly engages upon an outlet opening 68 connected to the discharge outlet (28) of the cistern. Activating the second valve seal results in a full volume flush.
    Type: Grant
    Filed: March 23, 1992
    Date of Patent: August 2, 1994
    Assignee: Vogue Vanity SDN BHD
    Inventor: Mok S. Kam
  • Patent number: 5205000
    Abstract: A dual water-level toilet flushing apparatus (10) that allows a toilet user to easily and quickly select either a partial or a full toilet flush. The partial flush which is normally preset is recommended for flushing liquid waste while the full flush is recommended for flushing solid waste. The apparatus (10) which is easily installed and requires no modification to the toilet water tank (60) consists of three major elements: an overflow tube sleeve (12) that attaches to an overflow tube (64) and that has swivelly attached the back end of a floating inverted pendulum (20). The front of the pendulum is attached, via a pendulum/flapper valve link (24), to the front of a toilet flapper valve (30) having its back swivelly attached to the bottom of the overflow tube (64). To effect a partial flush, the toilet flush handle (68) is depressed and immediately released; to effect a full flush the handle (60) is depressed and held for a few seconds.
    Type: Grant
    Filed: March 3, 1992
    Date of Patent: April 27, 1993
    Inventors: Frank Z. Xia, Mary Z. Luo, Jack Y. Zhang
  • Patent number: 5182819
    Abstract: A kit that includes a universal flapper and water saver valve stop for the fluid outlet of sanitary flush tanks utilizing a flat, thin, doughnut shaped gasket mounted on alternate supports, wherein the use of one support allows the doughnut shaped gasket to maintain its relatively flat configuration as in standard flapper valves, and the use of the alternate support stretches the doughnut shaped gasket to form a truncated cone, the dimensions of which closely follow those of standard ball valves, and the support structure for the valve stop includes at least two connecting devices for alternately connecting the valve stop to the different types of connecting assemblies found in standard flush tanks.
    Type: Grant
    Filed: April 26, 1991
    Date of Patent: February 2, 1993
    Inventor: William S. Shaw
  • Patent number: 5040247
    Abstract: A float has a bore which slidably embraces the overflow tube in a toilet tank. The float carries a valve actuator therebelow with structure which permits adjustment of the downward position of the valve actuator. The float and/or valve actuator may be non-round in order to fit closely adjacent the wall of the toilet tank. When the flapper valve at the bottom of the toilet tank is raised to release flush water, the float descends with lowering water leve and the actuator closes the flapper valve before all toilet tank water is released, to thereby conserve water.
    Type: Grant
    Filed: May 4, 1990
    Date of Patent: August 20, 1991
    Assignee: Mini-Flush Corporation
    Inventor: Charles F. Stevens
  • Patent number: 5031250
    Abstract: The mechanism comprises an inlet valve assembly which admits water into a toilet tank under the control of a valve plug mounted on the end of a vertical axle having a float on its upper end. The valve plug is unseated, to admit water, when the axle is tilted, and the plug is pulled into seated position by the float when the tank is filled. A drainage buoy, in cooperation with a buoy base, allows discharge of water from the tank when the buoy is pulled from the base. Pull chains are used, from a toilet handle, to tilt the axle and pull the buoy. The inlet valve includes a water pressure reducer, and a non-return valve assembly to prevent return of water to the water supply in the event of a loss of water supply pressure.
    Type: Grant
    Filed: April 19, 1988
    Date of Patent: July 16, 1991
    Inventor: Manuel Garcia De Couto
  • Patent number: 4928327
    Abstract: A device for the reduction of water use in a WC water tank comprises a closing element which opens and closes an outlet opening of the tank and is formed as a buoyant member. The device ensures a various rationing of water discharged from the tank by a ring-shaped suppressing element provided on the closing element which hangs on a chain connected to an operating knob. The suppressing element exerts on the closing element a force which is greater than the force required to maintain the closing element buoyant.
    Type: Grant
    Filed: May 11, 1988
    Date of Patent: May 29, 1990
    Inventor: Dieter Kuhn
  • Patent number: 4872473
    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.
    Type: Grant
    Filed: March 30, 1988
    Date of Patent: October 10, 1989
    Inventor: Michael Agostino
  • Patent number: 4841579
    Abstract: A rigid flapper type valve having a backing plate has been provided with a valve seal in the form of a flexible disc mounted to the bottom of the flapper valve. During sealing the disc will flex to contact the backing plate. A vent hole is provided in the backing plate to vent the area between the disc and plate.
    Type: Grant
    Filed: November 20, 1987
    Date of Patent: June 27, 1989
    Inventor: Bruce A. Antunez
  • Patent number: 4683908
    Abstract: The float is employed for controlling the valve of a water tank of a toilet for regulating the water level. The float has a solid core with wall structure extending therefrom forming a sealed chamber located on one side of the core. An aperture extends through the core. The volume of the chamber is greater than the volume of the core and the chamber and most of the volume of the float is located on one side of the aperture. The aperture will receive the free end of a rod which is connected to the valve. The float may be rotated around the rod and secured thereto at different angular positions to select the desired water level at which the valve is closed.
    Type: Grant
    Filed: November 7, 1986
    Date of Patent: August 4, 1987
    Inventor: Daniel J. Brewer
  • Patent number: 4656677
    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.
    Type: Grant
    Filed: October 24, 1985
    Date of Patent: April 14, 1987
    Inventor: Leonard A. Miskiewicz
  • Patent number: 4601071
    Abstract: A flushing system for rapidly delivering a given volume of water supplied to an accumulating chamber (5) from an automatically or manually operated valve (6) has a float-controlled discharge valve (19) which is arranged to be opened when said given volume of water has been delivered to the accumulating chamber (5) and the float is located at a corresponding level in said chamber. A supply pipe (13) extends downwardly in the accumulating chamber (5) towards the outlet (3), and a valve housing (19) is slidably arranged, together with the float, on the water supply pipe. In a closing position of the valve housing, the lower edge part of the valve encircles the outlet. In an opening position of the valve housing, with water in the accumulating chamber, the valve housing is lifted from the seating. The lower end of the supply pipe is formed with a valve body (17) arranged, together with the valve housing, to form a pressure chamber (24) having a leakage opening.
    Type: Grant
    Filed: May 3, 1985
    Date of Patent: July 22, 1986
    Inventor: Bengt A. Persson
  • Patent number: 4527296
    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.
    Type: Grant
    Filed: November 1, 1983
    Date of Patent: July 9, 1985
    Assignee: James Hardie Industries Limited
    Inventor: Neil R. Musgrove
  • Patent number: 4497076
    Abstract: The invention is an improved, adjustable ball valve closure for use in a dual flush water closet which allows the choice of a regular flush or a water saving flush. The adjustable closure is the type having a buoyancy chamber with a relatively lower drain hole and a relatively higher air bleeder port. It is improved by providing a water inlet port in a position which is above the drain hole when the valve closure is closed and is lower than the air bleeder port when the valve closure is open. The improvement allows a finer, more accurate adjustment of the amount of water discharged for a limited flush.
    Type: Grant
    Filed: February 24, 1983
    Date of Patent: February 5, 1985
    Inventor: Donald E. Sullivan
  • Patent number: 4467482
    Abstract: A float valve assembly for a water closet that has perfect seating control. The float valve can only move in an up and down direction and cannot move sideways. The float valve assembly has a float member that forms a valve which cooperates with a valve seat for opening and closing the flushing opening of the outlet coupling of the water closet. A pair of laterally spaced wire arm members have their one end pivotally attached to the top of the float member and their other end are pivotally attached to a C-shaped clamp that snaps onto the overflow tube within the water closet. A string-like member has its one end attached to the top of the float member and its opposite end can be attached to the free end of the actuating arm within the water closet.
    Type: Grant
    Filed: March 18, 1983
    Date of Patent: August 28, 1984
    Inventor: Arthur M. Dyer
  • Patent number: 4419773
    Abstract: A discharge valve closure of the type which has a bleeder port to permit the conservation of water by causing the closure to shut the discharge valve prior to the draining of all water from the water tank. The discharge valve closure features an adjustment which permits at least a portion of the buoyancy chamber to be pivoted about the axis of the closure to position the bleeder port at a selected angular spacing from its top dead center position. This adjustment allows the tank water level at which the closure shuts off the discharge valve to be adjusted.
    Type: Grant
    Filed: March 12, 1982
    Date of Patent: December 13, 1983
    Inventor: Donald E. Sullivan
  • Patent number: 4411029
    Abstract: A controlling device for the water-tank of a flush toilet comprising two handles on the water-tank whereby a high or low level is optionally determined, and whose controlling elements are all fitted to the handle assemblies and are independent of a hydraulic backing gate. The invention results in ease of assembling and repair, and also reduced effort for operation of the handles as well as reduced cost for modifications of a conventional water-tank.
    Type: Grant
    Filed: December 14, 1981
    Date of Patent: October 25, 1983
    Assignee: Sin Sui Lai
    Inventor: Jiunn-Cherng Huang
  • Patent number: 4388736
    Abstract: An improvement is described for a tank type toilet flushing system. A positive coupling is provided between the flushing handle and the tank emptying flushing valve including a rigid flush control rod. This permits the flush to be terminated at will and before the flush tank is completely emptied. The flush control rod has a bent, length adjusting section, and a bent section for removably mounting a float.
    Type: Grant
    Filed: June 4, 1981
    Date of Patent: June 21, 1983
    Inventors: Peter V. Roosa, Vernon D. Roosa