With Control Fluid Connection At Desired Liquid Level Patents (Class 137/393)
  • Patent number: 9458006
    Abstract: A non-pressurized fluid level shutoff system for a fuel tank includes a fuel receiver having a flow control valve that opens in a direction opposite a direction of fuel flow, and that cannot be manually overridden. A fuel sensor funnels fuel through a fuel jet outlet orifice to form a stream of fuel across a cutout section, and a supplemental peripheral port connected between an outlet orifice mixing chamber and the interior of the tank is oriented perpendicular to the stream of fuel across the cutout section, to interfere with the stream of fuel when the sensor is submerged in fuel in the tank, to further reduce any residual fluid flow signal when the sensor is fully submerged, allowing the flow control valve in the receiver to close completely.
    Type: Grant
    Filed: March 10, 2014
    Date of Patent: October 4, 2016
    Assignee: ADEL WIGGINS GROUP
    Inventor: Christopher Quang
  • Patent number: 8973601
    Abstract: A liquid condition sensor configured to monitor the condition of a liquid in an ultrasonic cleaning system tank, the liquid condition sensor including a first circuit configured to detect a signal transmitted from an ultrasonic generator to one or more ultrasonic transducers located in the tank. The liquid condition sensor further includes a second circuit coupled to the first circuit, the second circuit configured to determine if the signal is indicative of one of a suboptimal liquid level, and an unacceptably high concentration of dissolved gases in the cleaning liquid, and a third circuit coupled to the second circuit, the third circuit configured to provide a warning if one of a suboptimal liquid level, and an unacceptably high concentration of dissolved gases in the cleaning liquid is indicated by the second circuit.
    Type: Grant
    Filed: January 31, 2011
    Date of Patent: March 10, 2015
    Assignee: Ultrasonic Power Corporation
    Inventors: Peter J. Puskas, Steven H. Myers
  • Patent number: 8725301
    Abstract: A method of controlling an ebb and flow watering system utilizing existing hardware commonly used in ebb and flow systems including float switches, water pumps, electromechanical timers, reservoir, control bucket, flood lines, indicator LEDs and plant containers such that the filling and draining of the control bucket is improved by accommodating for hydraulic delays, flood line restrictions, and pump limitations, while further providing constant monitoring for leaks or float switch failure, and shutting off the pumps if the same are determined.
    Type: Grant
    Filed: September 27, 2011
    Date of Patent: May 13, 2014
    Assignee: IP Holdings, LLC
    Inventors: Martin Carskadon, Patrick Barrett
  • Publication number: 20130037129
    Abstract: Disclosed are integral and/or portable, easy-to-install apparatuses for detecting and containing fluid leaked or otherwise discharged from a fluid-filled device and for facilitating testing and maintenance of the apparatus and fluid-filled devices. In one aspect of the disclosed invention, upon sensing a fluid discharge, the apparatus activates audible and/or visual alarms and directs the discharged fluid to a predetermined drainage area to prevent damage to areas surrounding the fluid-filled device. In another aspect of the present invention, no plumbing or electrical wiring is required to install the apparatus, thereby allowing an unskilled individual to easily and inexpensively install the apparatus. In yet another aspect of the present invention, the apparatus may be easily located since it is not dependent on gravity or a drainage pipe for discharge of the fluid.
    Type: Application
    Filed: October 17, 2012
    Publication date: February 14, 2013
    Applicant: KEVIN M. MURPHY, LLC
    Inventor: Kevin M. Murphy, LLC
  • Patent number: 7757709
    Abstract: The integrated jet fluid level shutoff sensor vent assembly is designed for use in conjunction with a non-pressurizing tank fast fill system, and to support automatic shutoff fast fill refueling of vehicles. The integrated jet fluid level shutoff sensor vent assembly is mounted to a fuel tank and exposed inside the fuel tank for sensing a predetermined level of fuel within the fuel tank and allowing fully vented refueling.
    Type: Grant
    Filed: July 6, 2007
    Date of Patent: July 20, 2010
    Assignee: Adel Wiggins Group
    Inventor: Jose Cortez
  • Publication number: 20100051117
    Abstract: Fluid flow control members for use with valves are described herein. An example fluid flow control member for use with a valve includes a body having a first seating surface to control a flow of fluid through the valve. The body defines a second seating surface opposite the first seating surface to control a flow of fluid through the valve. Additionally, the body defines an aperture to receive a stem of the valve, and a bore surrounded by the first seating surface to receive at least one of a seal or a sliding member each of which have a first surface to be engaged by a second surface of a spring seat coupled to the stem to control a fluid flow through the valve.
    Type: Application
    Filed: September 2, 2008
    Publication date: March 4, 2010
    Inventors: Chun Lin, Eric Alan Miller, Roy Ronald Pelfrey, Yan Tao Sun, Fan Jian Jun
  • Publication number: 20100024886
    Abstract: Sizing solution delivery systems for a sizing press and methods for reducing sizing solution volumes generally include a service tank containing an untreated sizing solution (e.g., starch), a standpipe having a volume capacity of less than the service tank, and an auxiliary chemical tank downstream from the service tank and the standpipe. The standpipe is configured to collect overflow fluid from the size press during use. In this configuration, the volumes of overflow solution provided in the loop are shortened, which reduces sizing solution volumes needed during purging for paper grade changes. In addition, time and equilibrium cycles are concomitantly reduced. Also disclosed are methods for reducing the sizing solution volumes and/or increasing sizing efficiency with the sizing solution delivery systems.
    Type: Application
    Filed: July 29, 2009
    Publication date: February 4, 2010
    Applicant: KEMIRA CHEMICALS, INC.
    Inventor: William Daniel Seth
  • Patent number: 7641771
    Abstract: A system for generating purified water from polluted water which includes an entry chamber communicating with a source of polluted water, a pump for delivering water vapor from the entry chamber to the vapor chamber, and a passageway for delivering condensed water from the vapor chamber to a reservoir of purified water.
    Type: Grant
    Filed: June 17, 2008
    Date of Patent: January 5, 2010
    Inventors: Joel Vance Miller, Robert Samuel Smith
  • Publication number: 20090277512
    Abstract: A system for controlling the level of hydraulic fluid between a first and second sump in a transmission includes a valve assembly located within the first sump. The valve assembly includes a valve that is moveable between two positions. The valve assembly includes first and second inlet ports that communicate with the first sump and an outlet port that communicates with the second sump. The second inlet port has an opening that is located higher than an opening to the first inlet port. Hydraulic fluid within the first sump communicates through the first inlet port to the outlet port when the valve is in the first position, and hydraulic fluid within the first sump communicates through the second inlet port to the outlet port when the valve is in the second position.
    Type: Application
    Filed: March 30, 2009
    Publication date: November 12, 2009
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
    Inventors: Charles Alan Barker, Walter Eric Palmer
  • Publication number: 20090093915
    Abstract: In accordance with some embodiments, a pumping station controller (14) is provided for monitoring pumping station hardware such as a well level sensor (8) and pumps (10a, . . . , 10n). A user interface (12) enables a user to input data to the controller (14) for controlling the operation of the pumps (10) based on the sensed liquid level. Pumping hardware configurations vary from site to site so that wiring the hardware to the controller may be confusing for the user. To address this problem the controller may comprise a software product (20). The software product may comprise instructions for processor (19) to determine a suitable wiring configuration between the controller (14) and the pumping station hardware, based upon user entered parameters identifying the pumping station hardware to be used.
    Type: Application
    Filed: November 21, 2008
    Publication date: April 9, 2009
    Applicant: MULTITRODE PTY LTD.
    Inventor: Craig Stephen Parkinson
  • Patent number: 7258130
    Abstract: The integrated jet fluid level shutoff sensor vent assembly is designed for use in conjunction with a non-pressurizing tank fast fill system, and to support automatic shutoff fast fill refueling of vehicles. The integrated jet fluid level shutoff sensor vent assembly is mounted to a fuel tank and exposed inside the fuel tank for sensing a predetermined level of fuel within the fuel tank and allowing fully vented refueling.
    Type: Grant
    Filed: January 3, 2005
    Date of Patent: August 21, 2007
    Assignee: Adel Wiggins Group
    Inventor: Jose Cortez
  • Patent number: 7189365
    Abstract: In a liquid treating equipment to maintain a small amount of liquid to a desired liquid level with constantly supplying an additional liquid into a small capacity vessel, a storage vessel 13 to store the small amount of liquid, an injection tube 16 to inject the small amount of liquid into the storage vessel 16, liquid supplying apparatus 23–25 to supply the small amount of liquid into the storage vessel through the injection tube, a flow path 15 of which one end is joined with the storage vessel, a discharge vessel 14, joined with the storage vessel 13 via the flow path, having a larger surface area than that of the storage vessel, a discharge tube 17 of which the discharging inlet is positioned at the same level position as a desired liquid level of the small amount of liquid in the storage vessel and liquid discharging apparatus 27–29 to discharge the liquid from the discharge vessel through the discharge tube are provided.
    Type: Grant
    Filed: March 3, 2000
    Date of Patent: March 13, 2007
    Assignees: Riken, Fuence Co., Ltd.
    Inventors: Yutaka Yamagata, Tsunehiko Ozaki, Victor Morozov, Kozo Inoue
  • Patent number: 7156133
    Abstract: Apparatus is provided for controllably delivering liquid, preferably foam producing liquid, from a remote supply tank to a holding tank for replenishment of liquid in the holding tank. The apparatus utilizes a pressurized air source of a vehicle to supply the energy to move the liquid. A liquid level sensing, signaling element is adapted to automatically control the filling of the holding tank and terminating operation when the holding tank is no longer being replenished.
    Type: Grant
    Filed: July 13, 2004
    Date of Patent: January 2, 2007
    Inventors: John E. McLaughlin, Neocles G. Athanasiades, Toh M. Meng
  • Patent number: 7146729
    Abstract: A float operated fuel vapor vent valve has body structure with an annular mounting flange formed of material weldable to a fuel tank and the flange is spin welded to the tank. The float has surfaces thereon which slidably engage corresponding surfaces in the float chamber to prevent relative rotation of the float with respect to the valve body during spin welding. An optional pressure relief valve in the vent outlet also has surfaces slidably engaging the vent passage to prevent relative rotation during spin welding.
    Type: Grant
    Filed: September 15, 2003
    Date of Patent: December 12, 2006
    Assignee: Eaton Corporation
    Inventors: Kenneth M. Spink, Rosemary Bergsma, legal representative, Rudolph Bergsma, deceased
  • Patent number: 7059367
    Abstract: The present invention pertains to a plant watering system that is particularly suited for a plant container with a reservoir of water below the plant. The watering system uses a pilot controlled sequence valve to maintain the water level of the reservoir. The sequence valve includes a diaphragm that is pneumatically coupled to a pilot port fixed to the reservoir and submersed in the water. When the water level in the reservoir reaches a lower limit, the reduced pressure on a diaphragm causes it to open a pathway for water to flow from a water supply to the reservoir. When the water level reaches an upper limit, the increased pressure on the diaphragm causes it to close that pathway and shut off the water flow. The water supply can be an elevated tank or the pressurized water system. A pressure regulator can be used to lower the water pressure at the intake of the sequence valve. A nozzle controls the flow rate of water into the reservoir.
    Type: Grant
    Filed: February 1, 2005
    Date of Patent: June 13, 2006
    Inventors: Louis D. Atkinson, Shane T. Bloomer
  • Patent number: 7055546
    Abstract: A fluid intake pressure regulating system of this invention maintains the pressure of fluid entering a pump below a preselected level for avoiding undesirably high fluid discharge pressure exiting the pump.
    Type: Grant
    Filed: September 24, 2003
    Date of Patent: June 6, 2006
    Inventors: John E. McLaughlin, Neocles G. Athanasiades, Toh M. Meng
  • Patent number: 7028700
    Abstract: The present invention provides a method and apparatus for controlling a level in a receptacle capable of storing a fluid. The apparatus includes a first valve governing ingress of the fluid to the receptacle, a second valve governing egress of fluid from the receptacle, wherein the second valve is positioned below the first valve. The apparatus also includes a first switch deployed between the first valve and the second valve, wherein the first switch is capable of providing a first signal indicative of fluid at the first switch and a second switch deployed between the first switch and the second valve, wherein the second switch is capable of providing a second signal indicative of an absence of fluid at the second switch. The apparatus also includes a controller capable of controlling a fluid level in the receptacle by opening and closing the first and second valves responsive to the first and second signals.
    Type: Grant
    Filed: April 4, 2003
    Date of Patent: April 18, 2006
    Assignee: Texaco, Inc.
    Inventors: W. Spencer Wheat, Vesna R. Mirkovic, David H. Melton, David W. Harrison
  • Patent number: 6997201
    Abstract: A wastewater control system for use with a sewer service line conducting a flow of wastewater from a building to a sewer main. A flow control device is installed in the sewer service line; and an actuator, in electrical communication with the sensor, is connected to the flow control device. The actuator in response to an output signal from a hydrologic sensor causes the flow control device to block the flow of wastewater to the sewer main and detain the wastewater in the sewer service line.
    Type: Grant
    Filed: October 2, 2003
    Date of Patent: February 14, 2006
    Inventor: Herbert C. Preul
  • Patent number: 6969460
    Abstract: A graywater diverter vessel assembly (as shown in FIG. 2) comprises a cylindrical side vessel 4 and valve diversion assembly 1, 2, 16. The device fits onto a vertical wastewater pipe 9, wherein a user can by closing the valve 1, divert graywater to upflow into the cylindrical side vessel 4 and pass through the vessel's removable mesh filter 5 and outflow point 7 for reuse, or alternatively by opening the valve permit graywater to flow downward through the valve diversion assembly and sewer or onsite wastewater system. The cylindrical side vessel has an over-flow outlet 8 so graywater can overflow and bypass the closed valve and flow directly to the sewer or onsite wastewater system in the event that the free outflow of graywater is restricted from either clogging of the mesh filter or other blockage, without restricting or limiting the continued normal free outflow of graywater from the building's plumbing fixtures.
    Type: Grant
    Filed: August 18, 2003
    Date of Patent: November 29, 2005
    Inventor: James Edward Bertram
  • Patent number: 6848483
    Abstract: The present invention pertains to a plant watering system that is particularly suited for a plant container with a reservoir of water below the plant. The watering system uses a pilot controlled sequence valve to maintain the water level of the reservoir. The sequence valve includes a diaphragm that is pneumatically coupled to a pilot port fixed to the reservoir and submersed in the water. When the water level in the reservoir reaches a lower limit, the reduced pressure on a diaphragm causes it to open a pathway for water to flow from a water supply to the reservoir. When the water level reaches an upper limit, the increased pressure on the diaphragm causes it to close that pathway and shut off the water flow. The water supply can be an elevated tank or the pressurized water system. A pressure regulator can be used to lower the water pressure at the intake of the sequence valve. A nozzle controls the flow rate of water into the reservoir.
    Type: Grant
    Filed: March 24, 2004
    Date of Patent: February 1, 2005
    Inventors: Louis D. Atkinson, Shane T. Bloomer
  • 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
  • Patent number: 6837262
    Abstract: A refueling system for vehicles including a dual valve receiver connected in fluid communication with the fuel tank, and a jet sensor inside of the fuel tank and in fluid communication with the receiver. The refueling system further includes a relief valve vent in fluid communication with the fuel tank to vent the fuel tank and to relieve pressure that may otherwise build up inside the fuel tank during refueling. When refueling with an automatic shutoff nozzle, the sensor detects when a desired fuel level has been reached, and then informs the receiver to prevent fuel flow into the tank. When this occurs, the pressure inside the receiver and automatic shutoff nozzle increases, causing the nozzle to shut off automatically.
    Type: Grant
    Filed: January 15, 2002
    Date of Patent: January 4, 2005
    Assignee: Adel Wiggins Group
    Inventors: Jose Cortez, David Wicke
  • Patent number: 6684902
    Abstract: An accumulator for collecting a volume of a liquid, which includes controls to permit the liquid to rise in a container to a preset upper level, at which level a drain valve is opened causing liquid to flow out of the accumulator. The accumulator utilizes two opened bottom pipes, which are connected through check valves to a controller. The controller is sensitive to the pressure at its inlet port. The pipes are interconnected so that when the liquid reaches an upper level, the pressure at the controller is sufficient to open the drain valve, and once the accumulator is almost empty, the drain valve is closed.
    Type: Grant
    Filed: October 21, 2002
    Date of Patent: February 3, 2004
    Assignee: AcornVac, Inc.
    Inventors: Thomas K. Zinn, Enrique P. Loreto, Ron Hahn
  • Publication number: 20030131888
    Abstract: A refueling system for vehicles including a dual valve receiver connected in fluid communication with the fuel tank, and a jet sensor inside of the fuel tank and in fluid communication with the receiver. The refueling system further includes a relief valve vent in fluid communication with the fuel tank to vent the fuel tank and to relieve pressure that may otherwise build up inside the fuel tank during refueling. When refueling with an automatic shutoff nozzle, the sensor detects when a desired fuel level has been reached, and then informs the receiver to prevent fuel flow into the tank. When this occurs, the pressure inside the receiver and automatic shutoff nozzle increases, causing the nozzle to shut off automatically.
    Type: Application
    Filed: January 15, 2002
    Publication date: July 17, 2003
    Inventors: Jose Cortez, David Wicke
  • Patent number: 6582563
    Abstract: An improved portable water purification system with reduced leaks and the capability of automatic draining of its boiling tank, as well as to a method of preventing water spillage from a portable water purification system and a method of draining a boiling tank of a portable water purification system. The system includes a control tank that is connected to a water supply, a boiling tank that is connected to the control tank for boiling water, a condenser that is connected to the boiling tank for receiving steam from the boiling tank and for condensing the steam to form distilled water, and a distilled water tank that is connected to the condenser for collecting distilled water from the condenser. An inlet solenoid control valve is disposed between the water supply and the control tank, with the inlet solenoid control valve controlling flow of water to the control tank. The system further includes a UV light sanitizer, leak prevention and leak detection features, and a mechanism for detecting water quality.
    Type: Grant
    Filed: September 27, 2000
    Date of Patent: June 24, 2003
    Assignee: innowave, inc.
    Inventors: Tyler L. Adam, Robert W. Haney
  • Patent number: 6467497
    Abstract: A buffer box for use in a vacuum drainage system. The buffer box defines a reservoir of known effective size which provides substantially consistently sized slugs of liquid which may be efficiently pulled up a vertical lift. The buffer box includes an outlet and an air intake orifice which may be sized relative to one another so that only liquid from the reservoir is evacuated. The outlet has an upper edge which may be spaced from a base portion of the buffer box at a height which optimizes liquid velocity out of the box and defines a level above which only water is evacuated from the reservoir.
    Type: Grant
    Filed: April 21, 1999
    Date of Patent: October 22, 2002
    Assignee: Evac International Oy
    Inventors: Jay D. Stradinger, Douglas M. Wallace, Michael B. Hancock
  • Patent number: 6311717
    Abstract: A buffer box for use in a vacuum drainage system. The buffer box defines a reservoir of known effective size which provides substantially consistently sized slugs of liquid which may be efficiently pulled up a vertical lift. The buffer box includes an outlet and an air intake orifice which may be sized relative to one another so that only liquid from the reservoir is evacuated. The outlet has an upper edge which may be spaced from a base portion of the buffer box at a height which optimizes liquid velocity out of the box and defines a level above which only water is evacuated from the reservoir.
    Type: Grant
    Filed: April 21, 1999
    Date of Patent: November 6, 2001
    Assignee: Evac International Oy
    Inventors: Jay D. Stradinger, Douglas M. Wallace, Michael B. Hancock
  • Patent number: 6164332
    Abstract: An apparatus designed to manufacture a relatively large quantity of living water for a home or business. The apparatus includes a plurality of ampuls longitudinally aligned and connected together to enable the water delivered to the upper ampul to flow in a vortex pattern from the upper ampul to the lower ampul. Each ampul has a water dispensing unit which facilitates the flow of the water in a vortex pattern therein. Each ampul includes a longitudinally aligned neck with several pairs of magnets longitudinally aligned on the neck that create magnetic fields around the water as it flows in a vortex pattern through the neck. The apparatus is designed to be connected to a household water supply system and includes an optional holding tank and control valve.
    Type: Grant
    Filed: March 16, 2000
    Date of Patent: December 26, 2000
    Inventor: Randy Hatton
  • Patent number: 6082392
    Abstract: A hose assembly is provided for transmitting liquid fuel between the fuel tank of a highway truck and the fuel tank of an airport refueler. The assembly comprises inner and outer hoses. The inner hose transmits liquid fuel. A sealed passage is formed between the inner and outer hoses. Each end of the hose assembly is connected to a respective port for transferring the fuel between the highway truck fuel tank and airport refueler tank. The assembly includes at least one sensor port for connecting the passage to sensing means to detect leakage from the inner hose to the passage. A leakage sensing system is coupled to the sensor port for detecting leakage of fuel from the inner hose to the passage and for generating sensor signals. The leakage sensing system includes: (1) a pressure sensor for detecting a change in pressure within the passage, and (2) a liquid sensor for detecting the presence of liquid within the passage.
    Type: Grant
    Filed: September 30, 1997
    Date of Patent: July 4, 2000
    Assignee: General Transervice, Inc.
    Inventor: Robert Watkins, Jr.
  • Patent number: 6045336
    Abstract: In combination with a pump, a valve for operation at the interface between underlying heavier liquid and overlying lighter liquid is disclosed. The valve includes an inlet within the heavier liquid communicated from a valve seat to a conduit which typically is connected to the inlet of a pump. A valve disc opens and closes the valve seat to admit the heavier liquid to flow to the pump. The pump is preferably pneumatic and of the type which when flooded with liquid, automatically undertakes pumping and when empty of liquid ceases pumping. A buoyant member having a specific density between that of the lighter liquid and the heavier liquid is buoyantly supported at the interface and moves with the interface. This buoyant member is connected to an assembly which actuates the valve. Where lighter liquid is predominantly present, the float sinks and closes the valve preventing pumping. Where heavier liquid is predominantly present, the float rises, opens the pump inlet to permit pumping.
    Type: Grant
    Filed: April 28, 1998
    Date of Patent: April 4, 2000
    Assignee: Clean Environment Engineers, Inc.
    Inventors: Richard T. Webb, Thomas H. Hitchcock
  • Patent number: 6021806
    Abstract: A slurry distribution system for supplying slurry used in the planarization process of a wafer surface by chemical reaction is provided with a movable supply line having an open end which is maintained at a constant depth below the surface of the slurry in the slurry tank. The movable supply line penetrates the top of the tank and is supported for vertical movement in an opening in the top of the tank. The other end of the movable supply line is located outside the tank and is connected to a main supply line which leads to CMP equipment. A pleated flexible tubing allows the movable supply line to move vertically relative to the main supply line and the top of the tank. A position-controlling mechanism keeps the open end of the movable supply line at a predetermined distance below the top surface of the slurry in the tank as the top surface rises and falls, by moving the movable supply line vertically in accordance with the changing amount of slurry inside the tank.
    Type: Grant
    Filed: April 20, 1998
    Date of Patent: February 8, 2000
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Seung-bae Lee
  • Patent number: 6000425
    Abstract: A device comprising a chamber (10) with a maximum fluid level (14) established by an internal drain pipe (62) directing excess fluid to a point of disposal (44) and an internal replenishment fluid supply valve (16) providing any additional fluid required to maintain a minimum fluid level (12). The chamber (10) is remotely connected by unpressurized fluid conduits (32 & 34 & 40) to one or more fluid containers (30 & 38) which are to have maximum regulated levels (72 & 74) and minimum regulated levels (36 & 42) controlled by the device. The chamber (10) is established so that the maximum and minimum fluid levels (14 & 12) are respectively set at the same elevation as the maximum and minimum regulated fluid levels (72, 74 & 36, 42) of the regulated containers (30 & 38).
    Type: Grant
    Filed: September 1, 1998
    Date of Patent: December 14, 1999
    Inventor: Jeffry H. Steinorth
  • Patent number: 5969619
    Abstract: In order to control the delivery of a liquid to a vessel, a liquid level control system includes a regulated supply of low pressure air delivered to an air supply tube which extends to a liquid vessel for discharging the low pressure air at a preselected level within the liquid vessel. The control system also includes a sensor sensing fluctuations in air pressure at an intermediate point along the air supply tube. In particular, the sensor senses a first air pressure when the liquid is below the preselected level and sensing a second, higher air pressure when the liquid is at or above the preselected level. The sensor is in communication with the liquid supply source to produce a signal upon sensing the second, higher air pressure in the air supply tube. When the higher pressure is sensed, the sensor sends the signal it produced and the liquid supply source is responsive to the signal to stop supplying liquid to the liquid vessel.
    Type: Grant
    Filed: January 15, 1998
    Date of Patent: October 19, 1999
    Assignee: Goss Graphic Systems, Inc.
    Inventors: Thaddeus A. Niemiro, Thomas W. Orzechowski, Frederick J. Whiting, John W. Manser
  • Patent number: 5900141
    Abstract: A water purifier generally associated with a beverage dispenser is disclosed. The water purifier includes a first conduit having a first end and a second end opposite to the first end, a second conduit having a first end and a second end opposite to the first end, a cistern disposed between the first and second conduits, and a water purifying device disposed in the flow path of either the first conduit or the second conduit. The first end of the first conduit is arranged to conduct water to be purified into the first conduit, and the second end of the second conduit is arranged to conduct the purified water from the second conduit to a location outside of the water purifier. The flow of the water from the second conduit to the first conduit is completely prevented and interrupted whenever the water attempts to flow from the second end of the second conduit to the first end of the first conduit through the arrangement of the second end of the first conduit and the cistern.
    Type: Grant
    Filed: March 13, 1997
    Date of Patent: May 4, 1999
    Assignee: Sanden Corporation
    Inventors: Satoshi Takigawa, Toshiya Chiku
  • Patent number: 5881753
    Abstract: A fluid level controller which replaces fluid lost from a container thus maintaining the fluid level in the container. It is comprised of the following major pieces: an airtight reservoir (10) with cap (14), fill stem (12), feed lube (16), and tube attachment fittings (18a and 18b); several lengths of fluid conduit, (22a,b) and a u-bend (26) which form a siphon such that one end reaches into the bottom of reservoir (10) and the other reaches into the container below the desired fluid level; a length of conduit, (22c) which forms an air return line allowing air into reservoir (10); a stand (8) atop which sits the reservoir; a tubing clip (24); and a shut-off valve (20). The u-bend (26) allows the controller to preserve the initial prime of the system so that it only needs to be primed once. The shut-off valve (20) allows easy refilling of the controller once the fluid reservoir empties. These two features make the controller extremely easy to use.
    Type: Grant
    Filed: May 13, 1996
    Date of Patent: March 16, 1999
    Inventor: Alan P. Bowling
  • Patent number: 5871027
    Abstract: A vacuum valve controller for a vacuum sewer system having a suction pipe which is communicated with a vacuum system by opening a vacuum valve, and which is cut off from the vacuum system by closing the vacuum valve, so that soil water in a soil water basin is sucked through the suction pipe and sent to a predetermined place by opening said vacuum valve is disclosed.
    Type: Grant
    Filed: August 18, 1997
    Date of Patent: February 16, 1999
    Assignee: Ebara Corporation
    Inventors: Osamu Shimizu, Akihiro Ushitora
  • Patent number: 5718261
    Abstract: A cleaning solution dispenser installed in a water tank 2 includes a container 3 and a tubular flow regulator 4. The container receives cleaning solution therein and is formed with a downwardly opening outlet 31. The flow regulator extends into the outlet of the container and is divided by a partition plate 40 into upper and lower chambers 41, 42. The upper chamber has a closed top end and a surrounding wall formed with at least one radial port 43 opening adjacent to the partition plate. The flow regulator further has first and second tubes 44, 45 which extend upwardly from the partition plate into the upper chamber. The second tube is shorter than the first tube and has a top end which is located at a level higher than that of the port opening. The first and second tubes communicate the upper chamber with the lower chamber. The lower chamber has an open bottom end.
    Type: Grant
    Filed: February 6, 1996
    Date of Patent: February 17, 1998
    Assignee: Bobson Hygiene International Inc.
    Inventor: Cheng-Chang Chen
  • Patent number: 5673736
    Abstract: The invention described in the patent is an automatic control system which provides monitoring, supervision, and control of the process of filling of a tank or container with a liquid. The invention is applicable to cases where the liquid is handled in contact with its own vapor only, or where the liquid must be maintained at all times under a specified gas pressure. The invention provides an improved method of carrying out the process of filling of tanks or containers with liquids such as ammonia, chlorine, propane, liquefied petroleum gas, or with liquids such as carbonated beverages. The main advantage provided by the apparatus and method of the present invention is that an improved means is included for automatically stopping the filling process at the correct point, so as to avoid a possibly hazardous overfilled condition.
    Type: Grant
    Filed: September 11, 1995
    Date of Patent: October 7, 1997
    Inventor: Edward J. Farkas
  • Patent number: 5661855
    Abstract: A fill valve control system for toilet storage tanks, for preventing continued flow from a water supply thereto as a result of a flush valve leak or a tank leak, wherein the fill valve is responsive to a water level in a separate reservoir filled by a full level of storage tank water to shut OFF said fill valve, there being a syphon from the reservoir and responsive to flushing water from the storage tank to empty said reservoir to turn ON said fill valve, there being a flood prevention means that refills the reservoir in the event of a system failure, and there being a restart means to empty the reservoir for initiating normal operation of the system.
    Type: Grant
    Filed: September 11, 1995
    Date of Patent: September 2, 1997
    Inventor: John S. Osmond
  • Patent number: 5662460
    Abstract: A pneumatic pump having a variable buoyant actuator to substantially reduce the volume of a float, thereby increasing the fluid capacity for any pump of a given size. The pump includes an elongated housing, a sealable fluid entry aperture and a pipe communicating between an interior and an exterior of the housing. The housing includes a bottom wall and a cylindrical side wall extending from the bottom wall and terminating in an opening. A switchable valve control having a pod closes the opening. The pod has a plurality of valve seats and a plurality of corresponding valve elements, with the plurality of valve seats defining fluid inlet and output ports. The actuator is coupled to alternatingly placed valve elements in sealing engagement with fluid inlet and outlet ports in response to a level of fluid in the housing. The variable buoyant actuator includes first buoyant member disposed proximate to the bottom wall, and a buoyant amplifier disposed opposite to the first buoyant member, proximate to the pod.
    Type: Grant
    Filed: February 26, 1996
    Date of Patent: September 2, 1997
    Inventor: D. Bruce Modesitt
  • Patent number: 5649577
    Abstract: The invention described in the patent comprises a method and an apparatus for automatically stopping the process of filling of a tank or container with a liquid, where the liquid must always be maintained under a gas or vapor pressure higher than atmospheric pressure. In the situations to which the invention is addressed, the tank is not to be filled completely with liquid. If the tank is correctly filled, there is at the end of the filling process a certain fraction of the total internal tank volume which is still occupied by gas or vapor. The invention provides for automatically stopping the fill at the correct point, through installation of one of several different devices within the tank, and through the operation of a microprocessor which receives signals from sensors located in the liquid supply system, upstream of the filling hose.
    Type: Grant
    Filed: May 30, 1995
    Date of Patent: July 22, 1997
    Inventor: Edward J. Farkas
  • Patent number: 5641271
    Abstract: Pump (1) includes a pneumatic valve assembly (98) having a chamber (105) which is supplied by compressed air via an inlet pipe. Included within chamber (105) is a valve (109) with a chamber (111) divided into two separate compartments (112,113) by a pliant diaphragm (114). Diaphragm (114) is biased toward compartment (112) by a spring (115) and supports a plunger (116) which extends from chamber (111) and includes a frusto conical end (117) for selectively engaging seat face (99) and preventing air flow between chambers (105,90). Two air bleed passageways (119,120) respectively extend from chamber (90) and compartment (113) to atmosphere for allowing a gradual return to atmospheric pressure therein when the supply of compressed air is discontinued. A further bleed passageway (121) extends through diaphragm (114) to ensure a gradual equalization of pressure in compartments (112,113) such that the diaphragm will return to its original biased position.
    Type: Grant
    Filed: February 3, 1995
    Date of Patent: June 24, 1997
    Assignee: M.I.M. Holdings Limited
    Inventors: Alan J. Forrester, Paavo M. Laukkanen
  • Patent number: 5630443
    Abstract: A control device includes a liquid reservoir and a buoyant body movable to either an upper control position or to a lower control position in response to the level of the liquid in the reservoir. The outer surface of the buoyant body includes a cavity circumscribed by a rim engageable with a surface of the reservoir in the lower control position of the buoyant body to define a chamber isolated from the reservoir. A passageway normally connects the chamber to a source of low pressure but is connectible to a source of higher pressure, such that during the filling of the reservoir with the liquid, a low pressure in the chamber normally holds the buoyant body in the lower control position until the chamber is connected by the passageway to the higher pressure to permit the buoyant body to move by buoyancy to the higher control position.
    Type: Grant
    Filed: October 2, 1995
    Date of Patent: May 20, 1997
    Inventor: Peretz Rosenberg
  • Patent number: 5615701
    Abstract: A vacuum control valve controls the removal of sewage or other liquid removed from a tank by a vacuum discharge pipe. The control valve uses the amount of liquid in the tank, the atmospheric pressure, and the vacuum pressure of the vacuum discharge pipe to open or close a pipe communicating section which attaches the vacuum discharge pipe to a suction pipe disposed within the tank. When the pipe communicating section is opened, the liquid is removed from the tank via the suction pipe and the vacuum discharge pipe. When the tank is emptied, a damping diaphragm allows for decompression of pressure around its peripheral portion to prevent excessive suction. An opening time adjusting valve automatically self-adjusts to control the time period for a single suction activity based on the vacuum pressure inside the vacuum discharge pipe.
    Type: Grant
    Filed: June 7, 1994
    Date of Patent: April 1, 1997
    Assignee: Sekisui Kagaku Kogyo Kabushiki Kaisha
    Inventors: Yasuo Yamabe, Tetsushi Ohtsuka
  • Patent number: 5588471
    Abstract: Apparatus for filling drums and other containers with a lilquid product. The apparatus can be used for both subsurface and top filling operations. The level of the liquid in the container is monitored to prevent overfilling and withdrawal of the lance at an incorrect speed during a subsurface filling operation. A self closing cap is provided at the lower end of the lance, and a drip catcher is automatically moved into position beneath the lance when it is withdrawn from the container.
    Type: Grant
    Filed: March 9, 1995
    Date of Patent: December 31, 1996
    Inventor: Terry B. Lowe
  • Patent number: 5564464
    Abstract: An improved control valve for a holding tank is provided for cutting off the flow of fluid into a holding tank device in response to achieving a predetermined fluid level in the holding tank. The assembly includes a housing configured for placement adjacent a spill container. The housing has an upper inlet and a lower outlet and a flow passage therebetween having a diameter of which is substantially constant along its longitudinal length. A valve poppet is situated within the flow passage and is axially rotatable between a substantially vertical, open position, that allows for the flow of fluid through the flow passage, and a closed position substantially blocking fluid flow through the flow passage when the holding tank has reached a predetermined level of fluid.
    Type: Grant
    Filed: July 25, 1994
    Date of Patent: October 15, 1996
    Assignee: Dover Corporation
    Inventors: David R. Pendleton, James E. Kesterman
  • Patent number: 5519638
    Abstract: An automatic system is disclosed which monitors and replenishes hazardous liquids in their holding tanks, as such liquids are typically used in manufacturing processes. The inventive system and method obviate the need for manual surveillance and handling of the hazardous liquids during the detection and replenishment maintenance tasks. In prior practice, maintenance personnel were subjected to dangers from the hazardous liquids and their noxious gases, while the work area (e.g., clean room) in the vicinity of the liquid tanks was also subjected to contamination.
    Type: Grant
    Filed: February 7, 1994
    Date of Patent: May 21, 1996
    Assignee: United Microelectronics Corporation
    Inventor: Kuo-Chen Tiao
  • Patent number: 5414641
    Abstract: A method for determining elementary circuits and initial values of flows in a pipe network including one or more source nodes and a plurality of demanding nodes. An upstream node and a downstream node of each pipe is determined. The upstream node has less total resistance than the downstream node to the source node. A pipe joined between an upstream node and a downstream node is selected as an upstream pipe of the downstream node. A pipe which is never designated as an upstream pipe is selected as a circuit origin pipe. A node level, which indicates the number of nodes included in the passage from the source node, is determined. An elementary circuit is determined, by tracing upstream nodes along a first route starting from a first node of the circuit origin pipe and along a second route starting from a second node of the circuit origin pipe in accordance with the node level of the upstream node of each pipe, until the first and second routes reach a same source node or a same demanding node.
    Type: Grant
    Filed: May 11, 1993
    Date of Patent: May 9, 1995
    Assignee: Tokyo Gas Co., Ltd
    Inventors: Sakura Shinoaki, Junichi Enomoto
  • Patent number: 5285812
    Abstract: A jet level sensor used for controlling the liquid level in a tank such as a fuel tank. The sensor includes a nozzle and receiver supported within a bracket so that the nozzle and receiver and the associated conduits are freely rotatable with respect to the bracket. A manifold is coupled to the receiver for providing a plurality of output pressure signals indicative of the liquid level within the tank. The sensor is connected to a system which includes a main inlet valve and redundant relay valves which are fluid pressure responsive and which shut off responsive to the absence of a pressure signal from the sensor when the liquid within the tank reaches a predetermined desired level. Also provided are shut-off valves connected to be responsive to a tank and nozzle failure over-pressure condition at the inlet or within the tank.
    Type: Grant
    Filed: September 9, 1992
    Date of Patent: February 15, 1994
    Assignee: HR Textron, Inc.
    Inventor: Gerald A. Morales
  • Patent number: 5275216
    Abstract: An add-on liquid overflow shut-off valve for a tank. The device is used to ensure that a holding tank is not overfilled and provides a fail safe way to prevent spillage when pumping into a holding tank. The device provides a warning indicator when the holding tank is near full. The device also has a fail safe switch which will turn off air to a pump when the holding tank is full and also blow a whistle to indicate the tank is full. The device uses a diaphragm which operates on a pressure differential. When the pressure is increase past a spring set point, the diaphragm raises a plate that activates a switching valve which shuts off air supply to an air pump and blows a whistle.
    Type: Grant
    Filed: August 7, 1992
    Date of Patent: January 4, 1994
    Inventor: Christopher R. Haedt