With Condition Responsive Valve Patents (Class 137/895)
  • Patent number: 10413922
    Abstract: An external by-pass circuit for a positive displacement pump includes a flow diverter valve coupled to the pressure port of the pump. The flow diverter has an end coupled with a high flow output and another end coupled with a low flow output. The low flow end includes a by-pass arm coupled to and input flow fitting. The flow diverter valve further includes a ball valve to direct fluid to either the high flow or low flow output. The input flow fitting is coupled to the suction port of the pump at the one end and couples with a fluid source at the other end. The input flow fitting includes a flow control arm which includes a needle valve to selectively control flow within the flow control arm. The flow control arm also includes a by-pass fitting fluidly coupled with the by-pass arm of the flow diverter valve.
    Type: Grant
    Filed: April 13, 2018
    Date of Patent: September 17, 2019
    Assignee: Chapin Manufacturing, Inc.
    Inventors: Morgan Allis, James R. Fontaine, David Dubiel
  • Patent number: 8826659
    Abstract: PCV systems are well known in the art and commonly used in turbocharged engines. The ejector creates a pressure drop for additional pull of PCV gas under boosted conditions of the turbocharger engine. The ejector typically includes a first inlet and a second inlet and a sole outlet. The first inlet pulls air from the compressor of the PCV system. The second inlet pulls air from the cyclone separator of the PCV system. Air exiting the ejector is exited to the intake manifold. However, when the turbocharger of the system is off, fresh air can leak in from the inlet from the oil separator thereby preventing the ventilation of blowby. The unwanted air reduces the efficiency of the turbocharger system. Accordingly, an ejector preventing unwanted fresh air flow is needed in the art.
    Type: Grant
    Filed: September 27, 2011
    Date of Patent: September 9, 2014
    Assignee: Toyota Motor Engineering & Manufacturing North America, Inc.
    Inventor: Tenghua Tom Shieh
  • Patent number: 8813769
    Abstract: A device for putting in solution a powdery concentrate includes a liquid supply pipe (10), an extraction pipe (30) with a valve (31), and a transfer pipe (40) connected to a junction point, the transfer pipe being for connecting to a receptacle (50) containing the concentrate. The junction point is in the constriction of a venturi tube (20), the supply pipe (10) being connected to the convergent chamber (21) and the extraction pipe (30) to the divergent chamber (22). If the valve (31) is closed, the liquid leaves the venturi tube through the vacuum tapping to enter the receptacle. When the valve (31) is opened, the liquid leaves the venturi tube through the divergence chamber, causing a pressure drop in the vacuum tapping. The saturated liquid contained in the receptacle is then sucked and entrained by the liquid passing through the venturi.
    Type: Grant
    Filed: April 16, 2010
    Date of Patent: August 26, 2014
    Assignee: Fresenius Medical Care Deutschland GmbH
    Inventors: Paul Gastauer, Philippe Laffay, Benoit Luaire
  • Patent number: 8813789
    Abstract: A proportioning dispenser of concentrated chemical mixed in a diluent such as water includes a water valve, an in-line water pressure regulator downstream of the valve and an eductor downstream of the regulator. When the valve is open, water flows to the regulator, and a pressure regulator water flow passes to the eductor. When the valve is closed, no water flows to the regulator, which sees pressurized water only when the water valve is open during a dispensing cycle. More accurate dilution ratios are achieved over a wide range of incoming water line pressures. In an alternate embodiment, a water valve and a regulator are formed in a common housing with the regulator operationally downstream of the valve.
    Type: Grant
    Filed: August 1, 2008
    Date of Patent: August 26, 2014
    Assignee: Delaware Capital Formation, Inc.
    Inventor: Mark Dalhart, Sr.
  • Patent number: 8550302
    Abstract: A wall mounted dispenser for dispensing a mixture of water and liquid chemicals which may be used as a separate dispenser or in combination with other like dispensers. The dispenser of this invention includes several backflow preventers to ensure that the water supply will not become contaminated during backflow problems.
    Type: Grant
    Filed: May 7, 2012
    Date of Patent: October 8, 2013
    Inventor: Rodney Laible
  • Patent number: 8534325
    Abstract: The invention relates to a ventilation device for ventilating shower streams that is configured as an insert, and that may be utilized in a connection of a sanitary fitting, particularly in the connection of a shower head housing. The insert contains at least one water throughput channel connected to a ventilation channel such that air is suctioned in through the ventilation channel when a flow passes through the water throughput channel, ventilating the water stream. The insert may have a receptacle for a flow restrictor. A backflow preventer may be provided in order to prevent water leakage from the exterior end of the ventilation channel.
    Type: Grant
    Filed: November 25, 2008
    Date of Patent: September 17, 2013
    Assignee: Hansgrohe SE
    Inventors: Fabian Melle, Ulrich Kinle
  • Patent number: 8534326
    Abstract: The invention relates to a metering pump for admixing a fluid reduction agent into an exhaust gas flow, which comprises a premixing device in which the supplied reduction agent is mixed in a mixing region with a pressurized gas, wherein a first return valve is arranged in the premixing element in a supply conduit for the reduction agent, in front of the mixing region in the flow direction.
    Type: Grant
    Filed: December 29, 2005
    Date of Patent: September 17, 2013
    Assignee: Grundfos NoNox a/s
    Inventors: Hans Henrik Jochumsen, Niels Stubager Kiemer, Karim Lindberg, Niels Torp Madsen, Tom Johansen
  • Patent number: 8511340
    Abstract: Suction jet pumps include a driving line which leads via a jet outlet into a suction chamber, where the suction chamber has a suction opening which interacts with a valve element and through which fluid is sucked into the suction chamber. The valve element together with the suction opening forms a suction valve. The suction jet pump is driven by a driving stream flowing via the driving line. The suction jet pump is arranged in a storage tank and sucks fuel out of a fuel tank into the storage tank. The driving line has a bypass opening which leads into the suction chamber and is arranged in such a manner that the bypass stream thereof acts on the valve element.
    Type: Grant
    Filed: December 9, 2008
    Date of Patent: August 20, 2013
    Assignee: Robert Bosch GmbH
    Inventors: Pavel Smid, Radek Malec, Karsten Scholz, Jiri Kadlec
  • Patent number: 8459304
    Abstract: An air intake module of a water feeding apparatus is provided, which includes a body and a valve, and the body includes a water inlet channel and a water outlet channel. An air intake hole runs through the body outward from a joint between the water inlet channel and the water outlet channel, and the valve is disposed at the joint. With the change of a cross-sectional area of the joint, a phenomenon of a high flow rate and a low pressure occurs to force the valve plate open, and air is sucked in mixed with the water flow. When a back pressure of the water flow is larger than an atmospheric pressure outside, the valve plate is forced to close the air intake hole, so as to avoid leakage of the water flow and prevent the air intake hole from being clogged by impurities.
    Type: Grant
    Filed: October 1, 2010
    Date of Patent: June 11, 2013
    Assignee: Globe Union Industrial Corp.
    Inventors: Meng-Feng Cheng, Zcw. Zhang
  • Patent number: 8453667
    Abstract: A cleaning water supply device contains a mixing unit including a channel assembly and a circular valve member, wherein the channel assembly includes an inlet channel, an outlet channel, a through channel between the inlet and the outlet channels, and at least one intake communicating with the through channel; the valve member is installed in the through channel and includes a flexibly circular wing formed therein to abut against and close the through channel so that the intake is stopped communicating with the inlet channel and the outlet channel, and when the vacuum attraction generates in the through channel, the inlet and the outlet channels are opened; a storing unit connected with the channel assembly of the mixing unit and including a chamber to receive a cleaning fluid and an output tunnel communicating with the chamber and the intake.
    Type: Grant
    Filed: March 16, 2011
    Date of Patent: June 4, 2013
    Assignee: Globe Union Industrial Corp.
    Inventors: Libo Li, Jinming Xie, Mengfeng Cheng, Changweng Zhang
  • Patent number: 8336569
    Abstract: An eductor for mixing two liquids wherein the eductor includes a closed or non-air gap back flow prevention member. The vacuum profile of the eductor is altered by changing an opening in a passage portion to controllably divert water flow around the venturi tube or diverting the water without the opening. This affords the changing of the vacuum profile without redesigning the entire eductor.
    Type: Grant
    Filed: June 6, 2011
    Date of Patent: December 25, 2012
    Assignee: Diversey, Inc.
    Inventors: James H. Lohr, John A. Boticki, James L. Bournoville
  • Publication number: 20120234420
    Abstract: A steam supply passage incorporates a pressure reducing valve and the passage further incorporates a steam ejector downstream of the pressure reducing valve. A suction portion of the steam ejector is connected to a re-evaporation tank for re-evaporating steam condensate via a suction passage. Passage steam of the pressure reducing valve is used as a driving steam for the steam ejector. In operation, re-evaporated steam within the re-evaporation tank is suctioned by the steam ejector to be mixed with the passage steam. The suction passage incorporates a check valve for preventing reverse flow of steam to the re-evaporation tank.
    Type: Application
    Filed: August 6, 2010
    Publication date: September 20, 2012
    Applicant: TLV CO., LTD.
    Inventor: Naoki Matsukawa
  • Publication number: 20110139284
    Abstract: Herein is disclosed a diluted-fluid dispensing device that operates on the venturi principle to mix a concentrate with a diluent. A pressure-compensating passive valve is provided in a fluid passage of the device through which diluent flows, in order to enhance the precision of the dilution over a range of pressure and/or flowrate at which diluent may be supplied to the device. The passive valve may be placed in proximity to the diluent inlet of the device. The passive valve may be a self-actuating valve.
    Type: Application
    Filed: December 15, 2009
    Publication date: June 16, 2011
    Inventor: John J. Dyer
  • Patent number: 7954507
    Abstract: An eductor for mixing two liquids wherein the eductor includes a closed or non-air gap back flow prevention member. The vacuum profile of the eductor is altered by changing an opening in a passage portion to controllably divert water flow around the venturi tube or diverting the water without the opening. This affords the changing of the vacuum profile without redesigning the entire eductor.
    Type: Grant
    Filed: July 27, 2006
    Date of Patent: June 7, 2011
    Assignee: Diversey, Inc.
    Inventors: John A. Boticki, James L. Bournoville, James H. Lohr
  • Patent number: 7753288
    Abstract: A system and method are provided for failsafe storage and dispensing of a liquid material from a container having a storage compartment. A dispensing control unit coupled to the container includes a control valve portion operable to selectively direct a flow path of at least a portion of a pressurized fluid stream received thereby, and a response valve portion coupled to the neck portion. The response valve portion is reconfigurable between first and second states responsive to the pressurized fluid stream as directed thereto. The response valve portion in the first state seals an access opening of the container from the storage compartment, while in the second state maintains the access opening in communication with the storage compartment. The response valve portion is resiliently biased to its first state, whereby release of the liquid material therethrough is prevented in the absence of suitable fluid pressure actuation therefor.
    Type: Grant
    Filed: May 12, 2006
    Date of Patent: July 13, 2010
    Inventor: Mark T. MacLean-Blevins
  • Patent number: 7726518
    Abstract: A dispenser, particularly suitable for a liquid container, comprising a liquid pump provided with an inlet having an inlet valve and an outlet having an outlet valve, an air pump provided with an inlet having an inlet valve and an outlet having an outlet valve, a mixing chamber which is in communication with the outlet of each pump, and a dispensing part provided with an outflow channel with an outflow opening, wherein the outflow channel is in communication with the mixing chamber, and wherein the outlet valve of the air pump is arranged adjacent to the outlet of the liquid pump.
    Type: Grant
    Filed: September 23, 2004
    Date of Patent: June 1, 2010
    Assignee: MeadWestvaco Calmar Netherlands B.V.
    Inventor: Markus Franciskus Brouwer
  • Patent number: 7615122
    Abstract: A method and apparatus provides for dispensing a liquid concentrate. The source pressure of a liquid diluent is changed by a boost pump (52) to bring the pressure of the diluent to an elevated pressure. The diluent then enters an aspirator assembly (10) wherein the concentrate and diluent are mixed to form a use solution. The dynamic pressure of the diluent entering the aspirator assembly (10) is sufficient so that the amount of concentrate delivered over time is more constant.
    Type: Grant
    Filed: August 18, 2005
    Date of Patent: November 10, 2009
    Assignee: Ecolab Inc.
    Inventors: Richard J. Mehus, Charles A. Hodge
  • Patent number: 7556060
    Abstract: A flow component for medical infusion/transfusion lines comprises a main duct and a lateral tubular connection containing a one-way valve, in an area corresponding to which the main duct has an axial section with a wall having a convergent-divergent profile.
    Type: Grant
    Filed: November 22, 2005
    Date of Patent: July 7, 2009
    Assignee: Industrie Borla S.p.A.
    Inventor: Gianni Guala
  • Publication number: 20080223448
    Abstract: An eductor for mixing two liquids wherein the eductor includes a closed or non-air gap back flow prevention member. The vacuum profile of the eductor is altered by changing an opening in a passage portion to controllably divert water flow around the venturi tube or diverting the water without the opening. This affords the changing of the vacuum profile without redesigning the entire eductor.
    Type: Application
    Filed: July 27, 2006
    Publication date: September 18, 2008
    Applicant: JOHNSONDIVERSEY, INC.
    Inventors: James H. Lohr, John A. Boticki, James L. Bournoville
  • Patent number: 7367361
    Abstract: An eductor assembly includes an inlet connectable to a high pressure water source useful in firefighting, an outlet connectable to a fire hose and/or nozzle, and a venturi therebetween. An additive inlet communicates with the venturi so that a chemical additive, such as a foam concentrate, is educed into the output stream. A check valve is positioned at the additive inlet to open under venturi flow conditions and remain closed otherwise. An actuator is provided that holds the check valve in its open position while water flows through the eductor assembly under non-venturi conditions to produce a back flow through the additive inlet and ultimately through the additive fluid circuit, including the additive metering valve components. A return element may be disposed within the eductor body to return the check valve to its closed position when the back flow ceases.
    Type: Grant
    Filed: March 25, 2005
    Date of Patent: May 6, 2008
    Assignee: Task Force Tips, Inc.
    Inventor: Robert W. Steingass
  • Patent number: 7152619
    Abstract: An air tap assembly includes a mounting seat, a connecting member, a stop member, and an end cap. Thus, the stop plate of the stop member prevents the air in the air cushion from leaking outward through the vent holes of the connecting member, so that the air tap assembly has an anti-reverse effect to prevent the air from leaking outward from the air cushion during the inflating process, thereby facilitating a user inflating the air cushion.
    Type: Grant
    Filed: July 20, 2004
    Date of Patent: December 26, 2006
    Inventor: Mike Hwang
  • Patent number: 6837263
    Abstract: A liquid level control system including a tank; a source of liquid in communication with the tank; a pressure fluid actuated valve for controlling the flow of liquid to the tank from the source; a pressure sensor disposed in the tank to monitor the hydrostatic pressure determined by the quantity of liquid in the tank. A source of pressure fluid is provided which is normally vented to the atmosphere. A pressure fluid amplifier is coupled to the pressure fluid actuated valve and to the source of pressure fluid. When the pressure sensor sensed an increase of pressure caused by an increase in the liquid level in the tank, the pressure fluid amplifier is effective to actuate the valve to close and militate against flowing into the tank to maintain the liquid at a predetermined level.
    Type: Grant
    Filed: October 20, 2001
    Date of Patent: January 4, 2005
    Assignee: DistaView Corporation
    Inventor: Richard H. Kramer
  • Publication number: 20040173271
    Abstract: An external fluid injector assembly comprises a housing with a main fluid passage running through the housing. The housing includes a port enabled to couple the housing with a fluid pump (e.g., hydraulic pump or pneumatic pump) to receive a pressurized fluid stream into the main fluid passage. On the opposite end of the housing is a coupling assembly which allows an operator to attach a variety of devices, such as a hose. An injector assembly is connected to the housing and is capable of providing an external fluid to the pressurized fluid stream in the main fluid passage.
    Type: Application
    Filed: March 3, 2003
    Publication date: September 9, 2004
    Inventor: Stephen Keith Nance
  • Patent number: 6783329
    Abstract: The invention provides a jet pump comprising a housing containing a nozzle into which an injected fluid is introduced, the housing also possessing a suction orifice, the pump comprising, upstream from the outlet of the nozzle, an auxiliary chamber associated with two sealing elements, each sealing element being adapted to open when the pressure of the injected fluid exceeds a predetermined level, the first sealing element opening at a first pressure level, the second sealing element opening at a second pressure level greater than or equal to the first.
    Type: Grant
    Filed: December 20, 2002
    Date of Patent: August 31, 2004
    Assignee: Marwal Systems
    Inventors: Frédérico Vilela, Laurent Aubree
  • Patent number: 6776901
    Abstract: A flow control includes a conduit and a flow control washer disposed in the conduit between the conduit's inlet and the outlet. A gas inlet passage opens into the conduit, preferably at a location just downstream of the flow control washer, to permit a gas (typically ambient air) to enter a liquid stream flowing through the flow control washer. The admission of a gas into this liquid stream reduces noise generated by liquid flow through the flow control washer. Gas induction and noise reduction capabilities may be enhanced by admitting the gas fluid into a low pressure region of a venturi located in the conduit downstream of the flow control washer. The flow control is particularly useful in a wastewater drain of a water softener control valve, but is also useful in a variety of other applications. A method of reducing noise in a flow control is also provided.
    Type: Grant
    Filed: November 30, 2001
    Date of Patent: August 17, 2004
    Assignee: Clack Corporation
    Inventors: Don Vaughan, Paul D. Nielsen
  • Patent number: 6634376
    Abstract: An anti-backflow eductor has a resilient sealing sleeve disposed on a water port defining blind end tube. The sleeve has a thinner wall cross section at a discharge end to enhance sealing while facilitating increased water flow. The ports in the blind end tube extend into a radial tube flange at the tube's inlet end to facilitate water flow out of the ports between the sleeve and tube. A tapered seat in the housing, together with cross bars in the vents, reduces the air vent cross section and relative motion between sleeve and housing to reduce sleeve wear. The eductor comprises an anti-backflow housing and a venturi housing coupled together for relative rotation but being inseparable under normal conditions to inhibit venturi use without the anti-backflow function of the anti-backflow housing.
    Type: Grant
    Filed: August 16, 2001
    Date of Patent: October 21, 2003
    Assignee: Hydro Systems Company
    Inventor: Richard Haas
  • Patent number: 6604938
    Abstract: The invention relates to a device for gas burners, comprising at least two air nozzles 10, 11 for combustion air. The air nozzles 10, 11 are arranged in parallel. According to the invention, a flow restrictor 15 is assigned to one or more of the air nozzles 10, 11, respectively. Each of these flow restrictor 15 is capable of selectively shutting off the flow of air through the respective air nozzle 10, 11. This increases the range of modulation of the device according to the invention.
    Type: Grant
    Filed: April 11, 2002
    Date of Patent: August 12, 2003
    Assignee: Honeywell B.V.
    Inventors: Piet Blaauwwiekel, Albert Hietkamp
  • Publication number: 20030034078
    Abstract: An anti-backflow eductor has a resilient sealing sleeve disposed on a water port defining blind end tube. The sleeve has a thinner wall cross section at a discharge end to enhance sealing while facilitating increased water flow. The ports in the blind end tube extend into a radial tube flange at the tube's inlet end to facilitate water flow out of the ports between the sleeve and tube. A tapered seat in the housing, together with cross bars in the vents, reduces the air vent cross section and relative motion between sleeve and housing to reduce sleeve wear. The eductor comprises an anti-backflow housing and a venturi housing coupled together for relative rotation but being inseparable under normal conditions to inhibit venturi use without the anti-backflow function of the anti-backflow housing.
    Type: Application
    Filed: August 16, 2001
    Publication date: February 20, 2003
    Inventor: Richard Haas
  • Publication number: 20010028999
    Abstract: A high velocity jet of aqueous silver salt solution through the first tubing and a high velocity jet of aqueous halide salt solution through the second tubing are forced to merge in the merging zone to induce mixing action by means of kinetic energy of the fluid in the merging zone, aqueous hydrophilic dispersant solution in the third tubing is then supplied continuously between the two high velocity jets which have already merged to mix the three solutions in the merging zone instantaneously, and the mixed solution containing silver halide particles which have been formed by reaction caused by the mixing is immediately removed out of the merging zone.
    Type: Application
    Filed: April 5, 2001
    Publication date: October 11, 2001
    Inventor: Hirokazu Saito
  • Patent number: 6187186
    Abstract: Described is a device for introducing substances into water. The device includes a housing (1) forming first and second chambers (7, 9) separated by a partition (8). Throughgoing housing openings (11, 12) are provided on either side of the partition to allow each chamber to communicate with the container (21) supplying the substance. A connecting flange (15) having throughgoing flange openings (19, 20) is provided for connecting the housing to the container. The flange is arranged turnably relative with the housing such that in an operative condition each throughgoing housing opening coincides with a respective throughgoing flange opening. The turnable arrangement also includes at least one pin (17) located on the flange and which engages at least one groove (88) formed in the housing. A controlling means (24) is also provided in an opening (25) of the partition.
    Type: Grant
    Filed: May 6, 1999
    Date of Patent: February 13, 2001
    Inventors: Sam Zhadanov, El Zhadanov
  • Patent number: 6179226
    Abstract: The present invention relates to a high pressure cleaning device having suds cleaning efficacy comprising a control body, containing a Venturi tube seat at the interior thereof, connected to the output of a pump, one side of the body being an inlet for the feeding of detergent and the other side being connected to a high pressurized air output pipe such that the water stream and the detergent are mixed and formed into suds flowing out from an water outlet of the body to the outside for cleaning purpose, characterized in that a bending opening is provided to the middle section of the of the body connected to the inlet and outlet water passage, and the opening edge of the bending opening, corresponding to the lateral side of the body, a pressure-adjusting device is provided and a plug shaft is inserted at the bending opening and in combination with the conic shape end of the shaft body and a press board mounted at the bottom end of the plug shaft to resist the pressure change of the pressure within the interior
    Type: Grant
    Filed: January 18, 2000
    Date of Patent: January 30, 2001
    Inventor: Huang Y Jen
  • Patent number: 6176257
    Abstract: A regulated air suction valve, used in conjunction with a water pump with a water inlet pipe and a water outlet pipe and a container with an air volume, installed at the water inlet pipe for replenishing the air volume and comprising: a main body, having a submerged end which reaches into the water inlet pipe and a free end; a chamber inside the main body, leading air from the free end to the submerged end; and inlet control valve, located in the chamber at the free end for letting a limited amount of air into the chamber and; a first one-way valve located in the chamber at the submerged end, allowing air to proceed from the chamber into the water inlet pipe, while blocking water from the water inlet pipe from entering the chamber.
    Type: Grant
    Filed: June 4, 1999
    Date of Patent: January 23, 2001
    Inventor: Der-Fan Shen
  • Patent number: 6158471
    Abstract: A mixing device is suggested for introducing a fluid into another flowing liquid, especially for use as an oil lubricator. This lubricator consists of an exterior venturi pipe 18 and an interior venturi pipe 16, whereby a feed line 13 ensures the supply of the oil to be mixed into the interior venturi pipe 16. The feed line 13 is connected to the storage tank 28 of the lubricator by means of a butterfly valve 30 and a uptake 29. A control insert 20 is mounted in the ring-shaped cross-section between the interior pipe 16 and the flow channel 18. This has elastic blades in particular, which largely close the circular ring section at lower amounts of throughput of the air, such that even in this operational state, consistently good mixing results of the oil with the air can be guaranteed in interior pipe 16.
    Type: Grant
    Filed: July 2, 1999
    Date of Patent: December 12, 2000
    Assignee: Filterwerk Mann & Hummel GmbH
    Inventors: Volker Greif, Stefan Kochert, Klaus Moessinger, Bernd Spaeth
  • Patent number: 6119717
    Abstract: A fluid flow control apparatus precisely controls a slight flow of fluid being mixed with a carrier gas. The apparatus includes a container for containing the fluid and a conduit for conducting the fluid, one portion of the conduit having a smaller diameter than the other, the smaller diameter portion of the conduit Including a needle valve for controlling the flow of the carrier gas into the conduit. A fluid transmission line connected at one end to the conduit and at the other end to the container conducts fluid from the container into the conduit to be mixed with the carrier gas before the mixture is introduced into a reacting chamber.
    Type: Grant
    Filed: January 22, 1999
    Date of Patent: September 19, 2000
    Assignee: United Microelectronics Corp.
    Inventors: Ling-Hsin Tseng, Junson Shu, David Sheu
  • Patent number: 6098662
    Abstract: A longitudinally compact vacuum generator having an incorporated check valve. The generator includes a valve assembly housing having top and bottom portions. An exhaust housing is coupled to the top portion of the valve assembly and a venturi inlet port is located in the bottom portion of the valve assembly. A vacuum inlet port is configured in fluid communication with a suction chamber within the valve assembly and a pneumatic valve pressure supply port is configured in fluid communication with a pneumatic pressure supply channel.
    Type: Grant
    Filed: November 6, 1998
    Date of Patent: August 8, 2000
    Assignee: Advanced Pressure Technology, Inc.
    Inventor: Roger J. Gregoire
  • Patent number: 6092547
    Abstract: A combination valve and trap device is described for use in liquid supply and liquid disposal systems. Floats of various size, weight and shape are encased in cylindrical housings with inverse funnel inlets and outlets. The device functions as a valve, trap and back-flow safety device, depending on the float configuration, requiring neither mechanical apparatus nor external power supply for functionality.
    Type: Grant
    Filed: February 4, 1999
    Date of Patent: July 25, 2000
    Inventors: Keinosuke Komiya, Ken Komiya
  • Patent number: 6027044
    Abstract: A constant flowrate water saving valve comprises a main valve body having a peripheral wall formed with a conical-shaped valve seat surface, a liquid inlet opening on a side of the inner diameter r.sub.1, a vent flow opening on a side of the inner diameter r.sub.
    Type: Grant
    Filed: April 15, 1998
    Date of Patent: February 22, 2000
    Inventor: Masahiro Hirata
  • Patent number: 5927338
    Abstract: Disclosed is an improved mixing eductor (10) of the type wherein the primary liquid (17), e.g., water, is in a main stream (201) flowing in a downstream direction. A venturi tube (51) is in the eductor (10) and has an annular sharp edge (131) in the main stream (201), thereby dividing such stream (201) into a primary stream (179) and a secondary stream (181) around the primary stream (179). The eductor (10) has an air gap (103) and a flow guide (47) downstream thereof. In a specific embodiment, the flow guide (47) is annular around the venturi tube (51) and the tube (51) and the guide (47) are in spaced telescoped relationship. Several embodiments of the eductor (10) and a new method for mixing liquids are disclosed.
    Type: Grant
    Filed: February 20, 1997
    Date of Patent: July 27, 1999
    Assignee: S.C. Johnson Commercial Markets, Inc.
    Inventors: John A. Boticki, James L. Bournoville, James H. Lohr, Richard E. Rakoczy, Charles E. Seaman, Jr.
  • Patent number: 5896435
    Abstract: The injector (B) designed specifically to supply a steam generator (G) with water at high pressure when necessary, is supplied by steam that may originate from the generator itself, and by pressurized water from an ejector (C) supplied during the start up phase by a water circuit (D) pressurized by steam, and during the steady state phase, by an extraction circuit (R) connected on the downstream side of the injector. This device entrains water originating from a tank at low pressure (73) into injector (B), to pressurize it at a pressure exceeding the steam pressure.Application to safety devices in nuclear power stations.
    Type: Grant
    Filed: March 21, 1997
    Date of Patent: April 20, 1999
    Assignee: Commissariat a l'Energie Atomique
    Inventors: Guy-Marie Gautier, Patrick Aujollet
  • Patent number: 5799831
    Abstract: A foaming system 10 includes a dual aspirator 13. The dual aspirator 13 has first and second aspirators 80 and 81 to pick up a first and second chemical concentrate. The diluent first chemical mixture is drawn in through the first aspirator 80 and goes through a first diffuser 46 where the first chemical/diluent mixture is further mixed. Similarly, diluent/chemical mixture is drawn by the second aspirator 81 and flows through a second diffuser 47 where it also is mixed. The two diluent/chemical mixtures then combine after exiting the diffusers and the compatible chemicals are then mixed by the flow of the diluent/chemical mixtures. Flushing lines 68 and 71 provide for cleaning of the dual aspirator 13. Further, the diffusers have a ratio of their diameter to length to aid in the prevention of contamination along with the use of two check valves 48 and 49.
    Type: Grant
    Filed: March 20, 1996
    Date of Patent: September 1, 1998
    Assignee: Ecolab Inc.
    Inventors: John R. Spriggs, Richard Ruhr, Roger Keppers
  • Patent number: 5758691
    Abstract: A self-sealing venturi type mixing valve for mixing a polymer with water as t is being dispensed. A hollow piston is slidably mounted in the valve body. Water flows through the piston and into a venturi tube causing the water flow to become turbulent. A circumferential slot connected to a polymer reservoir surrounds the downstream end of the piston. The piston is spring-loaded within the valve such that its downstream end seals against the portion of the valve body forming the throat of the venturi tube, also sealing the slot from the venturi tube. When polymer flow is started, the pressure of the polymer pushes the piston away from the throat, allowing polymer to flow into the tube and mix with the water. When the polymer flow is shut off, the spring-loaded piston closes off the slot. Any polymer remaining in the slot is sealed off from contact with water, thus preventing clogging of the valve.
    Type: Grant
    Filed: April 17, 1996
    Date of Patent: June 2, 1998
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: William H. Nedderman, Jr.
  • Patent number: 5758825
    Abstract: A washing machine including a first electromagnetic valve connected to a cleaning solution supply source, a supply pipe having a cleaning solution input port connected to the first electromagnetic valve to receive cleaning solution from the cleaning solution supply source and a clean water input port connected to a clean water supply source to receive clean water from it and an output port, a second electromagnetic valve connected between the output port of the supply pipe and an automatic nozzle for permitting clean water and/or the cleaning solution to be delivered to the automatic nozzle, and a check valve for controlling the flowing direction of the cleaning solution from the first electromagnetic valve to the second electromagnetic valve.
    Type: Grant
    Filed: February 6, 1997
    Date of Patent: June 2, 1998
    Inventor: Chi-Yuan Hsu
  • Patent number: 5738135
    Abstract: A dispensing apparatus for dispensing a chemical product mixed with water is connected to a water supply through a line pressure diverter which relieves pressure in downstream of the water supply when the dispensing apparatus is not activated. Pressure is diverted by diverting the flow of water from a water supply to a second outlet port on the diverter. The line pressure diverter permits a dispensing apparatus to be installed on conventional water supply faucets without substantial modification thereto, and without causing damage to any pre-existing backflow prevention devices installed on the water supply.
    Type: Grant
    Filed: June 21, 1995
    Date of Patent: April 14, 1998
    Assignee: Ecolab Inc.
    Inventor: Robert E. Johnson
  • Patent number: 5669419
    Abstract: An electronic gas regulator is connected to a gas cylinder or other vessel to automatically measure and control the flow of gas to a desired application. Control and set up is accomplished through microprocessor based electronics, switches, sensors, encoders, indicators and electronic numeric display. Sensors, microprocessors and other electronics are thus provided in a single common apparatus to monitor and accurately dispense gas for a predetermined operation.
    Type: Grant
    Filed: July 11, 1996
    Date of Patent: September 23, 1997
    Assignee: Keystone Machine and Tool Co.
    Inventor: Jon H. Haas
  • Patent number: 5655563
    Abstract: A dispensing for dispensing a chemical product mixed with water is connected to a water supply through a line pressure diverter which relieves pressure in downstream of the water supply when the dispensing apparatus is not activated. Pressure is diverted by diverting the flow of water from a water supply to a second outlet port on the diverter. The line pressure diverter permits a dispensing apparatus to be installed on conventional water supply faucets without substantial modification thereto, and without causing damage to any pre-existing backflow prevention devices installed on the water supply.
    Type: Grant
    Filed: December 19, 1994
    Date of Patent: August 12, 1997
    Assignee: Ecolab Inc.
    Inventor: Robert E. Johnson
  • Patent number: 5653251
    Abstract: A linear sheath valve having a valve platform and a conforming cover. The valve platform can have inlet and outlet channels to carry liquid into and out of the valve. An elastomeric membrane is held under tension between the cover and the valve platform so as to control the flow of liquid between channels. The cover includes an expansion area on the cover surface adjacent to the membrane and between the inlet and outlet. Liquid flows through the valve when it is drawn by a vacuum. The vacuum operates on both the flow path exit, but also above the membrane, lifting it to open the flow path. Discontinuance of the vacuum allows the membrane to seal the inlet and outlet, thus again preventing any flow between them.
    Type: Grant
    Filed: March 6, 1995
    Date of Patent: August 5, 1997
    Assignee: Reseal International Limited Partnership
    Inventor: Michael D. Handler
  • Patent number: 5628344
    Abstract: A dry disconnect coupling connects the transfer hose from a fuel oil storage tank and the fill pipe of a tanker truck to form a continuous flow path between the storage tank and the tanker truck. The coupling includes an adapter, a coupler, and means for returning fuel residue to the flow path or to an external reservoir. The adapter is attached to the fill pipe of the tanker truck on one end and to the coupler on the other end. The free end of the coupler is attached to the transfer hose from the storage tank. The adapter and the coupler each define a flow passageway therethrough which is sealed by a poppet valve having an end face. The fuel returning means includes a reservoir for collecting fuel residue that accumulates on the end faces of the adapter and the coupler during transfer operations. In a preferred embodiment, the returning means includes a venturi vacuum for suctioning the fuel residue out of the reservoir and into the flow passageway defined by the coupler.
    Type: Grant
    Filed: May 17, 1995
    Date of Patent: May 13, 1997
    Assignee: Emco Wheaton, Inc.
    Inventor: Robert D. Roberts
  • Patent number: 5622203
    Abstract: A dual mode water circulation apparatus for installation in a water supply line in a building upstream of a water heater provides continuously heated water at one or more remote hot water faucets. The apparatus is connected in a water return loop that includes a portion of the water supply line that is downstream of the apparatus, the water heater, the common hot water pipe, and a return line from a remote faucet. The apparatus includes a housing having a first inlet for connection to the water return line, an outlet for connection to that portion of the water supply line that connects to the water heater, and a second inlet for connection to the water supply line. There is a chamber in the housing with the inlets and outlet connecting to the chamber. There is a check valve between the first inlet and the chamber preventing flow from the apparatus outwardly from the first inlet.
    Type: Grant
    Filed: October 3, 1995
    Date of Patent: April 22, 1997
    Assignee: Moen Incorporated
    Inventors: John D. Givler, Erwin F. Mikol
  • Patent number: 5538027
    Abstract: A pressure balancing foam valve includes a body having a liquid inlet at one end and a liquid outlet at an opposite end, and having an annular passage therethrough. A first stage pressure regulating assembly is disposed within the annular passage of the valve and includes a shaft that is attached at a first end to the liquid inlet. A one-piece pressure disc is slidably disposed on the shaft. The disc is urged into a seated position against an end portion of the liquid inlet by a spring interposed between the pressure disc and a second end of the shaft. The spring is selected so that the pressure disc is placed into the seated position during low pressure conditions to prevent liquid flow through the valve, and to permit compression by force of the disc from increasing liquid pressure to unseat the disc and permit liquid flow through the valve. A second stage pressure regulator is a venturi-shaped annular passage through a wall portion of the liquid outlet.
    Type: Grant
    Filed: April 11, 1995
    Date of Patent: July 23, 1996
    Inventors: Keith W. Adamson, John R. Grindley
  • Patent number: RE37090
    Abstract: A check valve which is positioned in the vacuum air line of an internal combustion engine. The check valve includes a single-piece valve body having an outlet port and two or more inlet ports, with one outlet port located substantially in line with the inlet port and connected by a venturi tube. The second inlet port is separated from the main air flow line by the valve stem and a diaphragm which allows communication there between and prevents back pressure. The second inlet port communicates with the outlet port through the valve stem and a second venturi tube which provides a vacuum boost to a device, usually vehicle brakes, connected to the inlet.
    Type: Grant
    Filed: March 8, 1996
    Date of Patent: March 13, 2001
    Assignee: Dura Automotive Systems, Inc.
    Inventors: Kenneth D. Kloosterman, John Barlow