Pressure Flush Patents (Class 4/332)
  • Patent number: 10443222
    Abstract: A control assembly for a toilet and includes a control unit with a case for receiving a voice control panel therein which receives voice commands from users to activate a linear driving member to move a shaft connected thereto which moves linearly relative to the at least one linear driving member. A movable member is connected to the shaft so as to press a button connected to a toilet body to flush. The number of the buttons, the linear driving members, the shafts and the movable members can be increased to perform more actions.
    Type: Grant
    Filed: January 10, 2018
    Date of Patent: October 15, 2019
    Inventor: Yi-Wen Tang
  • Patent number: 10301805
    Abstract: A toilet bowl system for use on-board an aircraft includes a toilet bowl body comprising a toilet bowl and a shroud. The toilet bowl has a rim. A removable splash guard is positioned between the toilet bowl and the shroud, and comprises a generally flat, flexible, planar shield having a central opening. The shield includes a top portion and a rear portion, the top portion faces the shroud and the lower portion faces the toilet bowl, and the lower portion is shaped to correspond with an upper portion of the rim of the toilet bowl and is configured to secure the removable toilet splash guard to the toilet bowl.
    Type: Grant
    Filed: March 29, 2016
    Date of Patent: May 28, 2019
    Assignee: B/E Aerospace, Inc.
    Inventors: Christopher Hardwick, Thao Hoang, Bradley J. Buniak, Christian C. Kurshinsky
  • Patent number: 9822516
    Abstract: An explosion-proof method of an explosion-proof pressure type toilet tank, includes dividing the toilet tank into a closed air container to store air and a closed water container to store water. The water container is disposed with an inlet and an outlet. The air container is connected to the water container by a channel. The air container compressive ultimate strength is larger than that of the water container. When the tank is filled with water, the air in the water container enters the air container through the channel. When the tank pressure is too great, the water container bursts, steadily releasing the air compression of the air container through the channel to prevent the compression air from quickly blowing out.
    Type: Grant
    Filed: December 11, 2013
    Date of Patent: November 21, 2017
    Inventor: Caiyou Li
  • Patent number: 9702130
    Abstract: A toilet flush tank is provided that is capable of preventing an increase in the external dimensions of a toilet main body even when the toilet flush tank is placed below the upper surface of a toilet main body and is also capable of performing toilet cleaning in a stable manner. A toilet flush tank stores cleaning water to be provided to a toilet main body having a toilet bowl and a toilet drainage channel that communicates with the downstream side of the toilet bowl. This toilet flush tank is placed inside a space below the toilet bowl and provided with a recessed portion that conforms to the shape of the toilet drainage channel at the upper surface of the toilet flush tank.
    Type: Grant
    Filed: February 13, 2015
    Date of Patent: July 11, 2017
    Assignee: LIXIL CORPORATION
    Inventors: Kouji Fukuya, Naokazu Onishi, Ken Higuchi, Yuji Saito, Kojiro Watari
  • Publication number: 20150033462
    Abstract: A flushometer toilet is used in a bathroom that has access to only a small diameter water supply pipe that usually would be useful only with a gravity toilet. A water storage apparatus (60) is provided that includes large diameter pipes (of 1.5 inches diameter) lying close to the flushometer valve (44) so at the beginning of a flushing, a large volume of water is available at a pressure of at least 30 psi.
    Type: Application
    Filed: August 5, 2013
    Publication date: February 5, 2015
    Inventor: Norman Usher
  • Patent number: 8529223
    Abstract: A pump assembly includes a housing defining a working chamber, a water pump chamber and a waste pump chamber. A first diaphragm separates the water pump chamber and the working chamber. A second diaphragm separates the waste pump chamber and the working chamber. A common driver member interconnects the first diaphragm and the second diaphragm. Movement of the driven member to a first position creates a positive pressure in the water pump chamber and a negative pressure in the waste pump chamber. Movement of the driven member to a second position creates a negative pressure in the water pump chamber and a positive pressure in the waste pump chamber.
    Type: Grant
    Filed: October 3, 2008
    Date of Patent: September 10, 2013
    Assignee: Thetford Corporation
    Inventors: William R. Cohoon, George Grech, Steven A. Meyer
  • Patent number: 8418277
    Abstract: A flush toilet in which an appropriate amount of water is supplied and that can be installed in an area where water pressure is low.
    Type: Grant
    Filed: August 29, 2007
    Date of Patent: April 16, 2013
    Assignee: Toto Ltd.
    Inventors: Mayu Okubo, Yoshikazu Ushijima, Yuichi Sato, Yoshinobu Kato, Ryosuke Hayashi, Ayako Harada
  • Patent number: 8316475
    Abstract: A siphonic, gravity-powered toilet is provided that includes a toilet bowl assembly having a toilet bowl. The toilet bowl has a rim channel provided along an upper periphery thereof and a direct-fed jet channel that allows fluid, such as water, to flow from the inlet of the toilet bowl assembly to the direct-fed jet outlet port into the interior of the toilet bowl, in the sump of the bowl. The rim channel includes at least one rim channel outlet port. In this toilet, the cross-sectional areas of the toilet bowl assembly inlet, the inlet port to the rim channel, and the outlet port to the direct-fed jet channel are configured so as to be optimized to provide greatly improved hydraulic function at low flush volumes (no greater than about 6.0 liters per flush). The hydraulic function is improved in terms of bulk removal of waste and cleansing of the bowl.
    Type: Grant
    Filed: February 25, 2009
    Date of Patent: November 27, 2012
    Assignee: AS IP Holdco, L.L.C.
    Inventor: David Grover
  • Patent number: 8281424
    Abstract: A flush toilet for prevention of reverse flow and uses a reduced number of parts. The flush toilet includes a toilet body having a bowl, a rim water outlet, a jet water outlet, and a discharge water trap piping; a water storage tank. A flush water supply mechanism is provided for supplying flush water to the rim water outlet and the water storage tank and a pressurizing pump pressurizes the flush water in the water storage tank. A jet-side water supply path supplies the pressurized flush water to the jet water outlet. An overflow path is provided having a lower end connected to the downstream side of the highest position of the jet-side water supply path and an upper end opened in the upper part in the water storage tank with a flapper valve provided in the overflow path.
    Type: Grant
    Filed: June 27, 2008
    Date of Patent: October 9, 2012
    Assignee: Toto Ltd.
    Inventors: Mayu Okubo, Yoshikazu Ushijima, Yuichi Sato, Yoshinobu Kato, Ryosuke Hayashi
  • Patent number: 7322053
    Abstract: A toilet-flushing (1) device comprises a container (2) divided by an elastic diaphragm (3) with a direct unrestricted connection to a water supply under pressure at the lower part of the container (2), with a flushing valve (15) also in the lower part of the container. The water distends the diaphragm (3) so that when the flushing valve (15) is opened, the diaphragm (3) ejects the flushing water fast, allowing a small volume flush to effectively clear the toilet trap (2) and sewer. Extension of the diaphragm can be reduced by having two diaphragms (55), (56), each providing half the flush volume by their extension. Substantial water saving is enabled. A water pressure actuated valve (35) that is well adapted for application to this device is disclosed.
    Type: Grant
    Filed: April 16, 2002
    Date of Patent: January 29, 2008
    Inventor: George Alexander Whitehead
  • Patent number: 6401270
    Abstract: An embodiment provides a toilet having a toilet pan 11, an outlet pipe 78 for the contents of the pan, a closeable lid 21 on the pan forming with the pan a waste receptacle chamber, a seal 22 between the lid 21 and the pan 11, means 12 for introducing water into the chamber to wash the internal surface of the pan, and means 2 for subsequently increasing the air pressure in the chamber to force the contents of the pan through the outlet pipe.
    Type: Grant
    Filed: December 13, 2000
    Date of Patent: June 11, 2002
    Inventor: Garry Moore
  • Patent number: 5857224
    Abstract: A pressure flush tank for toilets is formed and adapted to be located within a toilet enclosure and is preferably formed of a non-metallic material such as plastic. The pressure flush tank has an essentially rectangular vertical cross section and an essentially rectangular horizontal cross section, with the tank including an upper housing portion and a lower housing portion. There is a peripheral projection on the lower surface of the upper housing portion and a peripheral recess along a facing surface of the lower housing portion, with the projection being positioned within and ultrasonically welded to the recess. Each of the housing portions has side walls and end walls, with each housing portion having reinforcing interior walls extending between opposing side walls to provide strength and rigidity for the pressure flush tank.
    Type: Grant
    Filed: October 14, 1997
    Date of Patent: January 12, 1999
    Assignee: Sloan Valve Company
    Inventors: Erik J. Oberg, Ming Ge, Danny G. Orlowski, Jr.
  • Patent number: 5502845
    Abstract: A flush toilet stool includes a toilet bowl and a trap drainage passage connected to the toilet bowl. The toilet bowl has a water jet hole defined in a bottom region thereof and opening toward the trap drainage passage. A pressurizing unit such as a water pump is coupled to the water jet hole for drawing water under lower pressure directly from an external water supply and expelling the water under higher pressure through the water jet hole toward the trap drainage passage to develop a siphon flow to discharge sewage from the toilet bowl through the trap drainage passage.
    Type: Grant
    Filed: March 19, 1993
    Date of Patent: April 2, 1996
    Assignee: Toto Ltd.
    Inventors: Ryosuke Hayashi, Katsuichi Irifune, Yoshiki Ohta, Takashi Yoshioka, Osamu Tsutsui, Atsuo Makita, Ryouichi Tsukada, Shinji Shibata, Noboru Shinbara, Takayuki Ootani, Nobuichiro Ohsato
  • Patent number: 5406652
    Abstract: A water source (12, FIG. 1) is provided for mounting on a toilet housing (32) rearward of the toilet bowl (18), which has a small rearward-to-forward depth (D) and low height (H), and which enables close control of the flow of water and any vacuum to the toilet bowl and its outlet. The source includes a frame (40) for mounting on the rearward portion of the toilet housing, the frame having two wide holes (50, 52) and a diaphragm device (54, 56) extending across each hole to separate water regions (60, 62) from air regions (64, 66) that lie on opposite sides of the diaphragm. The holes and diaphragms form two horizontally spaced water supply units 42, 44 that lie on opposite sides of the toilet bowl outlet 24 to efficiently use space. A spring or weight biases each diaphragm to compress the water region. The two water regions are connected together and to a flush valve (14) for supplying water to the toilet bowl.
    Type: Grant
    Filed: April 30, 1993
    Date of Patent: April 18, 1995
    Assignee: Fluidmaster Inc.
    Inventor: Arnold Hennessy
  • Patent number: 5170515
    Abstract: A water closet having a trap drainage exit in a wall above a floor, in which at the time of flushing, a vent space is partitioned in a wall-like manner by water falling from a weir. A rise in the water level of a sump portion of the trap results, and air within the trap is quickly forced toward the drainage exit side by the force of the water flow to cause the interior of the trap drainage to have a decreased pressure so that siphon action easily occurs. When the feed rate of water from a tank slows, to terminate the siphon action, air is promptly introduced into the siphon area from a notch in a partitioning wall, whereby the air introduction is hastened and the siphon effect is terminated quickly.
    Type: Grant
    Filed: February 25, 1991
    Date of Patent: December 15, 1992
    Assignee: Toto Ltd.
    Inventors: Yoshio Kai, Toshifumi Yoneda
  • Patent number: 5073994
    Abstract: A low water flush toilet having a bowl with a horizontal ledge extending around the bowl periphery near its open upper end with a flush water nozzle on the ledge for discharging water in a generally horizontal direction onto the ledge. A pulsator is provided for producing pulses of flush water that are discharged onto the ledge with the water of each pulse flowing at varying velocities such that as the water flows around the ledge, some of the water will fall off the ledge around substantially the entire periphery of the bowl resulting in wetting of the entire bowl surface for cleaning the bowl. The pulsator includes a spring biased piston for discharging pulses of water.
    Type: Grant
    Filed: September 12, 1990
    Date of Patent: December 24, 1991
    Assignee: Thetford Corporation
    Inventors: Charles L. Sargent, Michael A. Wolcott, John M. Antos
  • Patent number: 4835797
    Abstract: A low profile siphonic flush closet comprises a bowl having a hollow rim in communication with a flushing water tank. The hollow space within the rim holds additional flushing water, and makes it possible to reduce the tank size and thus the overall size and weight of the toilet. The tank and bowl are preferably a unitary ceramic structure, and the lower boundary of the cavity within the rim declines from the front of the rim toward the tank at the rear.
    Type: Grant
    Filed: November 9, 1987
    Date of Patent: June 6, 1989
    Inventor: Cesare Castelli
  • Patent number: 4510629
    Abstract: A method of and apparatus for flushing a water closet by utilizing water and air for the flushing. The method operates at predetermined pressure ratios. At an air pressure of maximally about 3 bar inside of a pressure vessel the flushing medium consisting of air/water is fed into the pressure vessel, and if the pressure exceeds 3 bar, water only is fed into the pressure vessel. In order to feed water and air a water-jet injection is used which on the one hand communicates via an infeed line with the water mains and on the other hand communicates via an infeed stub at the suction side with the ambient air. The air/water mixture is fed through an infeed line into the pressure vessel, which infeed line ends in a space of the pressure vessel which is occupied by an air cushion. The relative pressures allows a two step flushing which is governed by an accordingly designed discharge valve in the outflow conduit of the pressure vessel.
    Type: Grant
    Filed: June 24, 1982
    Date of Patent: April 16, 1985
    Assignee: Ermital AG
    Inventors: Herbert Jovy, Wilhelm Schuster
  • Patent number: 4439874
    Abstract: A quiet water closet rim and a method for venting air from a rim cavity of a water closet. The rim has a horizontally oriented annular cavity and is selectively supplied with pressurized water by a flush mechanism. A series of perforations in the rim permits the pressurized water within the rim cavity to exit the rim in the form of a spray. The rim is also provided with a vent passageway having an inlet open into an upper portion of the cavity and an outlet open into the atmosphere. As pressurized water fills the cavity, a portion of the air within the upper portion of the cavity is vented through the vent passageway.
    Type: Grant
    Filed: September 7, 1982
    Date of Patent: April 3, 1984
    Assignee: Masco Corporation of Indiana
    Inventor: Donald C. Schrock
  • Patent number: 4408361
    Abstract: A diverter valve for a fluid storage tank such as the storage tank of a water closet is disclosed. In one embodiment, the diverter valve has a housing with an inlet passage for receiving a supply of water and a pair of outlet passages. One of the outlet passages delivers pressurized water from the diverter valve to the storage tank, and the other outlet passage delivers the pressurized water to a diversion conduit connected to the toilet bowl rim. The diverter valve also includes a movable flap mounted within the diverter valve which moves to proportion the flow of water between the two outlet passages in response to changes in the water level of the tank. The flap is initially positioned to direct water to the tank when the tank water level is high. The flap is then moved by a water level sensor such as a float to direct water to the bowl rim when the water level in the storage tank has dropped below a pre-determined diversion level. Flow to the bowl rim continues even after the tank has emptied.
    Type: Grant
    Filed: July 6, 1982
    Date of Patent: October 11, 1983
    Assignee: Kohler Co.
    Inventor: Roy J. Rozek
  • Patent number: 4407025
    Abstract: A water-conserving toilet is disclosed and includes a bowl for receiving waste and a waste outlet extending laterally from the bowl and defining a first, shallow trap arranged so that a relatively shallow body of liquid is normally retained in the bottom of the bowl for preventing gaseous flow through the trap. A flush system is provided and is arranged, when operated, to deliver a charge of flushing liquid into the bowl in a direction to cause said body of liquid to be discharged through said outlet. An enlarged chamber communicates with said bowl outlet for receiving waste from the bowl. An outlet extends outwardly from the chamber and is adapted for connection to a sewer inlet. The chamber outlet defines a second trap of substantial height capable of preventing reverse flow of sewer gas into the chamber in use.
    Type: Grant
    Filed: January 4, 1982
    Date of Patent: October 4, 1983
    Inventors: Arnold Hennessy, John D. Inch