With Second Diverse Control Patents (Class 137/389)
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Patent number: 11408523Abstract: A valve assembly includes: a valve body, having an inner cavity; a first pipeline arranged on the valve body, having one end that communicates with the inner cavity and another end that is configured to be connected to an air pump; a second pipeline arranged on the valve body, having one end that communicates with the inner cavity and another end that is configured to be connected to a bubble spraying interface of a pool; and a third pipeline arranged on the valve body, having one end that communicates with the inner cavity and another end that is configured to be connected to an inflating interface of the pool. When the air pump is in an activated state, the second pipeline is in a communicating state and supplies air to the spray bubble interface, and the third pipeline is in a communicating state and supplies air to the inflating interface.Type: GrantFiled: June 20, 2019Date of Patent: August 9, 2022Assignee: ORIENTAL RECREATIONAL PRODUCTS (SHANGHAI) CO., LTDInventor: Zhiyue Wang
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Patent number: 11122929Abstract: A machine for preparing beverages has a hydraulic circuit including a normally open discharge valve, which comprises a main inlet connected to a fluid actuator, a main outlet connected towards a collecting space, and a valve member between the main inlet and the main outlet, for enabling and preventing a flow of fluid between the main inlet and the main outlet. The discharge valve is a hydraulically driven valve, which also comprises a driving chamber for hydraulic driving the valve member. The driving chamber has an auxiliary inlet, connected to the delivery of a pump, and an auxiliary outlet, connected to a brewing unit and to the fluid actuator, in such a way that water delivered by the pump passes through the driving chamber before reaching the brewing unit and the fluid actuator, respectively. The driving chamber has a further outlet, connected in fluid communication to a device for spillage of water from the driving chamber.Type: GrantFiled: July 27, 2017Date of Patent: September 21, 2021Assignee: Luigi Lavazza S.p.A.Inventors: Andrea Colonna, Denis Rotta, Gabriele Picone
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Patent number: 11059731Abstract: A condensate neutralizer for connection to an appliance that discharges an acidic condensate liquid includes a reservoir containing a neutralizing media. An input conduit receives the acidic condensate liquid, and is connected to a reservoir inlet and a reservoir outlet is connected to a drain such that acidic condensate liquid flowing through an operating path flows through the neutralizing media to the drain. A bypass path connects the appliance directly to the drain such that acidic condensate liquid does not flow through the neutralizing media when flow through the operating path is restricted. A float is configured to move to a raised position where the float provides an alert visible to an operator when the acidic condensate liquid flows through the bypass path, and a float lock is operative to lock the float in the raised position.Type: GrantFiled: January 6, 2020Date of Patent: July 13, 2021Assignee: Axiom Industries Ltd.Inventors: Kirk Nagus, Ian Slinger
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Patent number: 11007867Abstract: A fuel tank assembly includes a securement structure that may be secured to a fuel tank. The securement structure may stabilize the lower regions of a draw tube and a return tube positioned within the fuel tank such that movement and vibration of the draw and return tubes is reduced during motion of the vehicle to which the fuel tank is secured.Type: GrantFiled: April 19, 2018Date of Patent: May 18, 2021Inventor: John Loffink
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Patent number: 10995481Abstract: A flush toilet includes a bowl, a tank coupled to the bowl, a flush valve positioned within the tank, and a flush device configured to initiate a flush cycle. The automatic toilet further comprises an electronic sensing assembly having a sensing member positioned on the bowl for detecting an overflow condition of the bowl, an overflow device operably coupled to the flush device, and a controller in electronic communication with the electronic sensing assembly and the overflow device for controlling the flush device in response to a condition of the toilet.Type: GrantFiled: March 1, 2019Date of Patent: May 4, 2021Assignee: Delta Faucet CompanyInventors: Michael J. Veros, Kurt Judson Thomas, Robert W. Rodenbeck, Garry Robin Marty, Derek Allen Brown
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Patent number: 10962172Abstract: A storage tank includes a frame, tank assembly, and scrubber system. The tank assembly including a vessel supported by the frame and having a first end, a second end, and a polygonal sidewall extending from the first end to the second end. The vessel further having a top, a bottom, at least one side, and an internal surface, and an outlet fluidly coupled with the bottom; and a chemical-resistant lining associated with the internal surface of the sidewall and being substantially flexible. A scrubber tank is supported by the frame and fluidly connected to the vessel to receive vapors from the vessel in a way that when a vapor absorption material is disposed in the scrubber tank, the vapors pass into the vapor absorption material.Type: GrantFiled: February 23, 2018Date of Patent: March 30, 2021Assignee: Dast Tanks, LLCInventor: Terry Vaughn
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Patent number: 10716429Abstract: A machine for preparing beverages, in particular espresso coffee, comprises a hydraulic circuit including a brewing unit, a water tank, a pump having the inlet connected in fluid communication to the tank, and the outlet or delivery connected in fluid communication to the brewing unit. A normally closed one-way hydraulic valve, which is set between the pump and the brewing unit, enables a flow of water toward the brewing unit when the pressure of the water delivered by the pump exceeds a substantially predetermined threshold. There is a heating means for heating the water delivered by the pump.Type: GrantFiled: June 14, 2016Date of Patent: July 21, 2020Assignee: Luigi Lavazza S.p.A.Inventors: Denis Rotta, Andrea Colonna, Luciano Gabriele Picone, Simone Rosetta, Danilo Bolognese
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Patent number: 10323972Abstract: A combination temperature and low water sensor includes a body configured to penetrate the wall of a hydronic furnace. A detection tip is attached to the body and extends into the furnace when the temperature sensor penetrates the wall. The detection tip is electrically conductive and defines a tip interior volume. A temperature sensor is disposed within the interior volume of the detection tip. Both the detection tip and the temperature sensor are configured for electrical connection to a furnace control system.Type: GrantFiled: January 24, 2017Date of Patent: June 18, 2019Inventor: Thomas J. van Dijk
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Patent number: 9829895Abstract: A fire truck operable to automatically refill a water tank comprises a first pressure transducer coupled to an intake inlet of the pump and operable to measure an intake pressure, a second pressure transducer coupled to a discharge outlet of the pump and operable to measure a discharge pressure, a first discharge pipe coupled between the discharge outlet of the pump and a fire hose, a second discharge pipe coupled between the discharge outlet of the pump and the water tank, a control valve disposed in the second discharge pipe, and a controller operable to automatically sense a low water level condition of the tank, and automatically control the engine speed, the pump speed, and the control valve so that adequate water supply to the fire hose via the first discharge pipe is automatically given priority and maintained while automatically refilling the water tank via the second discharge pipe.Type: GrantFiled: October 28, 2011Date of Patent: November 28, 2017Assignee: ROM Acquisition CorporationInventors: John E. McLoughlin, Neocles G. Athanasiades, Kiam Meng Toh
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Publication number: 20150107676Abstract: A system and methods for automatically actuating a valve are provided herein. The method includes energizing sensors, a controller and an actuator with power that is generated locally at the site of the valve.Type: ApplicationFiled: August 29, 2014Publication date: April 23, 2015Inventors: Jesse J. Green, Brad Andrews
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Patent number: 8950428Abstract: An automatic rain barrel is disclosed, providing the ability to easily use a mix of rainwater and water from another source for tasks such as watering landscaping.Type: GrantFiled: July 21, 2011Date of Patent: February 10, 2015Inventor: George Sly
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Patent number: 8931510Abstract: A rail vehicle contains a sanitary system which has a waste water tank and a fresh water tank which are each equipped with associated filling level sensors. A control device is provided for establishing a link in terms of control between the filling levels in the fresh water tank and waste water tank. The control device monitors the filling level in the waste water tank by associated sensors and controls the filling level in the fresh water tank as a function of a measured filling level in the waste water tank.Type: GrantFiled: October 27, 2010Date of Patent: January 13, 2015Assignee: Siemens AktiengesellschaftInventors: Ralph Gaertner, Torge Kamphausen, Walter Lindermuth
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Publication number: 20140366512Abstract: A conveying unit which can be mounted in a tank for conveying a liquid additive from the tank includes a filling level sensor which can emit and receive waves that are reflected back to the filling level sensor at a surface of liquid in the tank, so that a filling level measurement can be carried out by measuring the transit time of the waves. The conveying unit has at least one additional sensor device or sensor with which it is possible to determine if there is frozen additive in the tank. A tank for storing a liquid additive, a motor vehicle having the conveying unit and a method for determining a liquid additive quantity in a tank are also provided.Type: ApplicationFiled: September 2, 2014Publication date: December 18, 2014Inventors: JAN HODGSON, JOERG-ROMAN KONIECZNY
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Patent number: 8887747Abstract: A level control system is provided. The system includes multiple sensors configured to measure multiple parameters related to a drum, wherein the multiple parameters include a drum liquid level, a vapor flow rate leaving the drum, a downstream pressure of the drum, and a feed-liquid flow rate entering the drum. The system also includes a level controller configured to adjust a level control valve in accordance with a signal representative of the drum liquid level, a signal representative of the downstream pressure and a signal representative of a given drum liquid level set point. The level controller is further configured to receive a feedback signal representative of a combination of a fraction of the signal representative of the drum liquid level and a fraction of the signal representative of the downstream pressure.Type: GrantFiled: May 31, 2012Date of Patent: November 18, 2014Assignee: General Electric CompanyInventors: Rajeeva Kumar, Charles William Weidner, Steven Di Palma
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Publication number: 20140283928Abstract: A flow amount control apparatus is configured to include a supply tank for storing a liquid, a main pipe having a first open end connected to the tank and a second open end disposed lower than the first end for transferring the liquid from the tank to the second end, a supply valve capable of preventing the liquid from flowing into the main pipe, the supply valve being placed between the tank and the second end, a branch pipe having a third open end connected to the main pipe at a position between the supply valve and the second end and a fourth open end disposed above the third end, a flow amount adjustment means for controlling an amount of the flowing liquid, a liquid level detection unit for detecting a liquid level in the branch pipe, a timer, and a controller for controlling the flow amount adjustment means.Type: ApplicationFiled: September 12, 2013Publication date: September 25, 2014Applicant: NITTO SHOJI, LTD.Inventors: Yasuyuki TAMATE, Shigeru HAYAMA
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Patent number: 8607730Abstract: An apparatus and method of replacing a liquid of a circulation line in a substrate liquid processing apparatus of a single-wafer type, which can replace the liquid more efficiently, by relating the replacing method with a process-liquid replenishing method. A substrate liquid processing apparatus of a single-wafer type includes: a circulation line through which a process liquid is circulated; a tank disposed in the circulation line; a liquid level sensor disposed in the tank; a liquid replenish part configured to replenish the tank with a new process liquid, based on an output of the liquid level sensor; and a liquid-replacement control part configured to stop the operation of the liquid replenish part based on a predetermined replenish stop condition that is set cooperatively with a predetermined liquid disposal condition, and to discard all the process liquid in the tank based on the predetermined liquid disposal condition.Type: GrantFiled: December 2, 2010Date of Patent: December 17, 2013Assignee: Tokyo Electron LimitedInventor: Kazuyoshi Eshima
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Patent number: 8534313Abstract: An auxiliary actuator for a toilet fill valve comprises a plunger oriented under an arm of the toilet fill valve to lift the arm to close the toilet fill valve when the plunger is in a raised position. A spring or hydraulic mechanism urges the plunger into the raised position. A solenoid mechanism is normally de-energized and engages a latching mechanism of the plunger when the plunger is in a lowered position. An electronic sensing circuit has at least one sensor and a power source. The electronic sensing circuit is electrically connected with the solenoid mechanism to energize the solenoid mechanism upon detection of a fault condition based on the input of the at least one sensor. Fault conditions may include a flush valve leak, a stuck-open flush valve, a plugged toilet, and a leaking fill valve.Type: GrantFiled: January 4, 2013Date of Patent: September 17, 2013Inventor: Kermit L. Achterman
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Patent number: 8479763Abstract: A valve including a mechanical part, e.g. a float, for performing a ROV function (Roll Over Valve) and an electronic part, e.g. an electronically controlled solenoid valve, for performing a venting function.Type: GrantFiled: March 31, 2006Date of Patent: July 9, 2013Assignee: Inergy Automotive Systems Research (Société Anonyme)Inventors: David Hill, Saurin Mehta, Scott McCleary, Scott Garabedian
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Patent number: 8166996Abstract: A system and method for conditionally interfering with the operation of a conventional toilet tank fill valve prevents toilet overflow and conserves water. A single self-contained apparatus, located completely within the toilet tank, detects and prevents a toilet overflow and/or conserves water by conditionally interfering with or overriding the normal operation of a toilet tank fill valve to prevent a further flush. Exemplary illustrative non-limiting steps include removing the toilet tank lid to provide access to said toilet tank fill valve within the tank, manually snapping an assembly onto said fill valve protective cap, and automatically and conditionally actuating said assembly to cause the assembly to selectively interfere with or override the operation of said toilet tank fill valve. An exemplary illustrative non-limiting device comprises an attaching structure for manual attachment to said fill valve cap, and a control mechanism supported by said attaching structure.Type: GrantFiled: June 8, 2010Date of Patent: May 1, 2012Assignee: nth Solutions, LLCInventors: Eric L. Canfield, Scott Soma, James Canfield
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Patent number: 7931041Abstract: A system includes sensors configured to measure vessel parameters. A signal processing unit receives sensor output signals and generates a first, second, third, fourth, and fifth filtered output signals representative of liquid level, gas flow rate, feed-liquid flow rate, vessel pressure, and vessel temperature, respectively. A flow demand control unit receives the first filtered output signal and generates an output signal representative of feed-liquid flow demand. A shaping unit receives the second, fourth, and fifth filtered output signals and generates an output signal representative of shaped gas flow rate. A liquid level control unit controls the liquid level within predetermined limits by controlling one or more components based on the output signals from the flow demand control unit, the shaping unit, and the third filtered output signal.Type: GrantFiled: December 19, 2007Date of Patent: April 26, 2011Assignee: General Electric CompanyInventors: Charudatta Subhash Mehendale, Bruce Gordon Norman, Erhan Karaca, Rajeeva Kumar
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Patent number: 7849890Abstract: An assembly includes a sensor element operable to generate a signal in response to moisture being present at a predetermined level within a sealed housing, and a valve element coupled to the housing and, in response to the signal, operable to enable at least a portion of the moisture to exit the housing.Type: GrantFiled: July 1, 2005Date of Patent: December 14, 2010Assignee: Lockheed Martin CorporationInventor: Allen Jones
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Publication number: 20100263742Abstract: A water shutoff system includes a water conduit having a passageway extending therethrough. The passageway includes an inlet in fluid communication with an outlet. Water enters the inlet and is released outwardly of the outlet. The inlet is couplable to a water supply and the outlet is couplable to a faucet. A valve is in fluid communication with the passageway. The valve is positionable in an open position allowing water flow through the passageway or in a closed position preventing water flow through the passageway. A drive mechanism is mechanically coupled to the valve. The drive mechanism is actuated to selectively alternate the valve between the open and closed positions. A control is operationally coupled to the drive mechanism to actuate the drive mechanism to open or close the passageway. The control actuates the drive assembly to close the passageway when a threshold limit has been achieved.Type: ApplicationFiled: April 21, 2009Publication date: October 21, 2010Inventor: Margaret Bogdanska
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Patent number: 7757708Abstract: A system and method for conditionally interfering with the operation of a conventional toilet tank fill valve prevents toilet overflow and conserves water. A controller connected to a water level sensor detects abnormal toilet tank water level over time and conditionally interferes with the normal operation of a toilet tank fill valve assembly, thereby preventing a further flush. The overflow and water conservation feature can be designed into a fill valve at time of manufacture and/or added later by a plumber or end user.Type: GrantFiled: February 25, 2008Date of Patent: July 20, 2010Assignee: nth SolutionsInventors: Eric L. Canfield, Scott Soma, James Canfield
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Patent number: 7726584Abstract: A thermal valve assembly for a transmission is provided. The thermal valve assembly includes a body having a base portion having a plurality of opposing sidewalls extending therefrom. A cover is mounted with respect to the body and operates to at least partially close the body to form a volume. The base portion defines an inlet orifice, while at least one of the plurality of opposing sidewalls at least partially defines an outlet orifice. A plate is operable to selectively close the inlet orifice. A bi-metallic spring member is disposed at least partially within the volume. The bi-metallic spring member is operable to bias the plate against the base portion. Additionally, the bi-metallic spring member has a variable stiffness characteristic responsive to temperature.Type: GrantFiled: May 8, 2006Date of Patent: June 1, 2010Assignee: GM Global Technology Operations, Inc.Inventors: Derril A. Loe, Richard F. Olenzek, Todd R. Berger
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Publication number: 20090277512Abstract: 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: ApplicationFiled: March 30, 2009Publication date: November 12, 2009Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventors: Charles Alan Barker, Walter Eric Palmer
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Publication number: 20090150041Abstract: A refueling system for a vehicle having a combustion engine. The refueling system includes: a fuel tank; a canister configured to adsorb fuel vapor generated inside the fuel tank; a canister drain cut valve coupled to the canister and configured to discharge air; an ignition sensor configured to detect whether the ignition of the combustion engine is switched on or off; and a refueling controller configured to open the canister drain cut valve when the ignition sensor detects that the ignition of the combustion engine is switched off. A method for refueling a motor vehicle can use the refueling system.Type: ApplicationFiled: October 27, 2005Publication date: June 11, 2009Applicant: INERGY AUTO. SYSTEMS RESEARCH (SOCIETE ANONYME)Inventors: David Hill, Saurin Mehta
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Patent number: 7509973Abstract: A system to prevent an excess flow of water to a toilet tank in the event of a failure of a primary flow control assembly including a novel secondary shut-off valve which is automatically disposed into an initialized configuration upon completion of a normal flush cycle, but which is disposed into a closed configuration in the event of a failed flush cycle.Type: GrantFiled: April 5, 2006Date of Patent: March 31, 2009Inventor: Manuel Deive
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Patent number: 7503082Abstract: An air massage system for a bathtub comprises a blower, an air distributor and the water jets. The air distributor connects the blower to the jets, and the jets are adapted to deliver air under pressure to the cavity defined by the bathtub. The jets include water check valves to prevent the water in the bathtub from entering the air distributor. The air distributor comprises at least one water relief valve for preventing water from reaching the blower, when inoperative, in the event of failure of any one of the water check valves. The air distributor also comprises a main pipe, a manifold and distribution pipes, with the main pipe connecting the blower to the manifold and the distribution pipes connecting the manifold to the jets. The water relief valve is provided on the manifold, and the water check valves are provided on the manifold and at each jet. A pressure relief valve is provided upstream of the jets for keeping a substantially steady pressure from the air propelled by the blower.Type: GrantFiled: November 19, 2004Date of Patent: March 17, 2009Assignee: C. G. Air Systèmes Inc.Inventor: Miguel Castellote
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Patent number: 7055546Abstract: 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: GrantFiled: September 24, 2003Date of Patent: June 6, 2006Inventors: John E. McLaughlin, Neocles G. Athanasiades, Toh M. Meng
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Patent number: 7032257Abstract: A flush tank includes an outlet pipe attached to a receptacle for discharging water, a float disposed close to the outlet pipe to selectively block the outlet pipe, and to control an outward flowing of the water through the outlet pipe. A magnetically forcing device may magnetically force the float to block the outlet pipe, and a detecting device may be used to detect users and to actuate the magnetically forcing device to release the float. The magnetically forcing device includes an electromagnetic device supported by a frame to act with the float. A stop may be attached to the frame to limit a movement of the float relative to the outlet pipe.Type: GrantFiled: January 6, 2004Date of Patent: April 25, 2006Inventor: Kuan Pao Chen
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Patent number: 6994107Abstract: This invention refers to an Automatic/Manual Device for Controlling Outflow of Water or any Fluid, with Mechanical Functioning and Easy Installation. It has a threadable intake nozzle for the inflow of water or any other fluid. The nozzle can be turned to direct the device as needed. Also, in the interior of the device there are two magnets with inverse polarity, a spring, two rubber membranes with orifices, a rubber membrane without an orifice, two supports for said membranes, an air chamber, a manually-activated metal ring, a functioning mechanism with the following positions: ON-OFF, a double copper tube that is submerged in the container to be filled, a rubber hose connecting the double copper tube with the air chamber, and an activating mechanism with “manual”, and “automatic” positions for operating the device.Type: GrantFiled: February 15, 2002Date of Patent: February 7, 2006Assignee: Ana Lidieth Madrigal ChavarriaInventor: Rafael H. T. Sosa
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Publication number: 20040050424Abstract: This invention refers to an Automatic/Manual Device for Controlling Outflow of Water or any Fluid, with Mechanical Functioning and Easy Installation. It has a threadable intake nozzle for the inflow of water or any other fluid. The nozzle can be turned to direct the device as needed. Also, in the interior of the device there are two magnets with inverse polarity, a spring, two rubber membranes with orifices, a rubber membrane without an orifice, two supports for said membranes an air chamber, a manually-activated metal ring, a functioning mechanism with the following positions: ON-OFF, a double copper tube that is submerged in the container to be filled, a rubber hose connecting the double copper tube with the air chamber, and an activating mechanism with “manual”, and “automatic” positions for operating the device.Type: ApplicationFiled: August 15, 2003Publication date: March 18, 2004Inventor: Rafael H.T. Sosa
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Patent number: 6026837Abstract: The present invention provides an automated chemical drain system which includes a buffer tank for collecting used chemical from a process machine, at least two level sensors in the buffer tank for sensing a fluid level and sending out a signal, a controller for receiving the signal from the level sensors and then sending out a second signal to a solenoid controlled valve when the first signal exceeds a threshold value, a solenoid controlled valve that is in fluid communication with the buffer tank and a collection tank, and a collection tank for collecting used chemical from the buffer tank. The collection tank may further be provided with a weight sensing device such that a signal may be sent out to the controller when the weight of the collection tank exceeds a maximum allowable value so that the controller shuts off the solenoid controlled valve to avoid overflow in the collection tank and to alert a maintenance operator to empty the collection tank.Type: GrantFiled: May 14, 1997Date of Patent: February 22, 2000Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.Inventor: J. S. Chen
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Patent number: 5992447Abstract: A device for filling a swimming pool having a liner and a shell includes a water supply valve to control the flow of water into said swimming pool; a vacuum pump to evacuate air from the space between the liner and the shell as the swimming pool is being filled; a probe for generating a signal when the water in the pool reaches a predetermined height; and a controller responsive to the signal from the probe to shut off said water supply valve and the vacuum pump when water is detected by the probe. A current sensor monitors the current to the vacuum pump and shuts off the water supply valve when the vacuum pump ceases operation. A bypass switch allows the current sensor to be disabled.Type: GrantFiled: September 4, 1998Date of Patent: November 30, 1999Inventors: Russell Miller, Michael Oyer
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Patent number: 5814213Abstract: An improved skimming apparatus for skimming a two component liquid includes a housing mounted to a tank below the normal liquid level for the tank, an outlet for pumping fluid from the submerged housing and an intake structure extending upwardly from the submerged housing and defining an inlet for permitting inflow of liquid to the interior of the submerged housing. The intake structure includes an intake tube rotatably mounted to the housing at upper and lower ends. The intake tube rotates in response to variations of the liquid level in the housing, to vary the inlet size and hence the rate of inflow to the housing. An adjuster provides control over the variation of the inlet size, to accommodate different skimming rates for liquids of different temperatures. An intermediate tube surrounds the intake tube, and an outer tube surrounds the intermediate tube.Type: GrantFiled: November 10, 1997Date of Patent: September 29, 1998Inventor: James A. Glasgow
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Patent number: 5626162Abstract: The water control gauge is a cylindrical reservoir for collecting water from rain, sprinklers and other airborne sources. The reservoir has a float measurer to measure the level of water collected in the reservoir. A pulley having a float detects the water level and the turning of the wheel of the pulley operates an electric switch to allow or inhibit the operation of a sprinkler system. A siphon is attached to the reservoir to drain the water once a predetermined level has been reached.Type: GrantFiled: March 8, 1996Date of Patent: May 6, 1997Inventor: A. Charles Dispenza
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Patent number: 5557939Abstract: A control system for absorption chillers which comprises a device for measuring operating state data concerning components of the main assembly of the chiller and including the liquid level of a high temperature generator and the degree of opening of a gas valve, and a fuzzy control circuit for calculating the deviation of the liquid level from a target value based on the measured operating state data, predicting a variation in the liquid level from the deviation and another item of the operating state data and calculating a control input as to the inverter frequency of an absorbent pump based on the result of prediction, whereby even when a great disturbance occurs, the liquid level of the generator can be controlled with high responsiveness to minimize the variation of the liquid level.Type: GrantFiled: May 10, 1995Date of Patent: September 24, 1996Assignee: Sanyo Electric Co. Ltd.Inventors: Kazuaki Mizukami, Atsushi Ogawa, Masashi Yasuda, Masahiro Furukawa, Hidetoshi Arima, Yoshio Ozawa
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Patent number: 5460197Abstract: The valve (31) comprises at least two lateral openings (34, 36) which can be shut off by a plug (40) provided with an axial orifice (48) for the passage of gas and sliding axially in the casing (32) between a position in which the openings, (34, 36) are shut off under the influence of a spring (44) and an open position counter to the action of the spring (44) under the influence of the pressure of the filling gas, and a level valve (52) activated by a float (62) at the bottom of the casing (32).The plug (40) comprises an inner cavity (70), the bottom of which has a cross-section in the shape of an open "V". In this cavity (70) is a ball (72) which prevents the cylinder from being filled when the latter is inclined sufficiently for the ball not to be situated at the bottom of the cavity (70).Type: GrantFiled: July 12, 1994Date of Patent: October 24, 1995Assignee: Torrent Trading Ltd.Inventors: Leon Kerger, Claude Goffin
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Patent number: 5351712Abstract: An on demand, remotely activated, electronically and electro-mechanically controlled, energy saving, water conservation, hot, water recovery system, which may be installed in residential and commercial structures having a pressurized water supply (11). The system is comprised of a dual chamber, dual hot water outlet, water heating reservoir (23), and a flow control and recovery apparatus (10), in fluid communication with a cold water supply (11) and hot water outlets (93-97). The system installs in new or existing structures, without alteration of the plumbing lines or electrical wiring. The flow control (84) is preprogrammed to, upon command, drain standing water from the hot water outlets (93-97), and refill the outlets with hot water from the small chamber (23b) of the water heating reservoir (23), making hot water available at the instant an outlet is opened.Type: GrantFiled: November 23, 1993Date of Patent: October 4, 1994Inventor: John A. Houlihan
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Patent number: 5197569Abstract: The present invention is an apparatus for regulating the amonut of oil, lubricant, or other type of lubricant applied to a surface of a work piece in order to reduce friction during a machining process. It comprises a primary reservoir, a needle valve, float assembly, a liquid drop control orifice, a sight for allowing visual confirmation of the flow rate, an atmospheric vent, an inlet for pressurized air, and a nozzle. The needle valve is slidably engaged into an orifice in the primary reservoir and is actuated by the float assembly. The float assembly floats in the low volume constant depth reservoir and controls the degree to which the needle valve need be open in order to maintain a constant volume of lubricant in the low volume constant depth reservoir. As the volume increases to the required level, the needle valve will close. As the volume decreases, the needle valve will open in order to maintain a constant level of lubricant in the reservoir.Type: GrantFiled: May 26, 1992Date of Patent: March 30, 1993Assignee: Trico Mfg. Corp.Inventors: David A. Roessler, Donald R. Jung, Robert D. Jung, Charles F. Pace, Michael J. Doperalski
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Patent number: 5178009Abstract: A temperature controller with an integral liquid level control is contained within one unit. The unit consists of an electrical and heat conductive housing, which serves as a first electrode of the liquid level sensor. A metal clamp and a means to attach the housing to the liquid vessel is insulated from the housing and serves as a second electrode. The electrodes are connected in an electrical circuit such that when the electrodes are immersed within a conductive liquid, the resistance between the electrodes is reduced and a current is allowed to flow. A temperature sensor, such as a thermistor, RTD, or thermocouple, is contained within the housing. The housing conducts heat from the housing environment for radiation within the housing.Type: GrantFiled: May 21, 1991Date of Patent: January 12, 1993Assignee: Industrial Engineering and Equipment CompanyInventors: Anil K. Arekapudi, Donald G. Bryan, Jr., Thomas Holden
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Patent number: 5012838Abstract: The present invention relates to a solenoid valve disposed over a fuel tank and incorporating a liquid surface detecting valve for detecting the liquid surface in a fuel tank. The solenoid valve comprises a plunger and an adhesion preventive pin wherein the adhesion preventive pin is lowered in the direction of the liquid surface detecting valve at the time of opening of the solenoid valve and the same pin pushes the liquid surface detecting valve downward at the time when the liquid surface detecting valve is attached and adhered to a valve seat thereof, whereby the liquid surface detecting valve is open with assurance.Type: GrantFiled: May 18, 1990Date of Patent: May 7, 1991Assignees: Kyosan Denki Kabushiki Kaisha, Fuji Jukogyo Kabushiki KaishaInventors: Toshirou Kawase, Shiro Saito, Masanobu Miyake
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Patent number: 4811754Abstract: A fluid-flow control valve comprises a valve housing bounding a chamber and defining an inlet port for entry of fluid into the chamber and a control port for egress of fluid from the chamber. The control port is of reduced cross-sectional area relative to the chamber. The valve also comprises a valve closure member disposed in the chamber. The valve closure member is less dense than the fluid that the valve is to be used to control, so that when the chamber contains that fluid and the control port is above the closure member, the valve closure member is urged toward the control port so as to obstruct the control port. The closure member can be displaced away from the control port so as to allow fluid to flow through the control port.Type: GrantFiled: March 6, 1987Date of Patent: March 14, 1989Assignee: Oy Wartsila AbInventor: Raymond L. Wilhelm
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Patent number: 4802334Abstract: An optical sensor (40) located in the manifold area (20) of an augmentor senses the presence of liquid. The engine control provides a high fuel flow rate from remotely located augmentor fuel control (58) until liquid is sensed. Flow is then reduced to the desired metered rate.Type: GrantFiled: October 5, 1987Date of Patent: February 7, 1989Assignee: United Technologies CorporationInventors: Matthias Eder, Walter B. Kerr
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Patent number: 4702271Abstract: The invention concerns a float-controlled flow-control devie for the outlet from a sewage system, especially a rain basin. The bearings for the pivots (7 & 8) that the float arm (4) and the shutter (2) rotate on are mounted on a displaceable structure (3). This makes it possible to vary the outflow volume to be controlled even when the device is in operation, and hence to control it remotely as well.Type: GrantFiled: September 29, 1986Date of Patent: October 27, 1987Assignee: Lothar SteinhardtInventor: Klaus-Ulrich Giehl
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Patent number: 4686086Abstract: Apparatus is provided for controlling liquid levels in different vessels, and the blending of different materials in the separation and purification of polymeric materials in solution, such as polyethylene in cyclohexane.Type: GrantFiled: October 29, 1984Date of Patent: August 11, 1987Assignee: Phillips Petroleum CompanyInventor: Fred Rowe
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Patent number: 4592098Abstract: The invention is directed to a liquid level control system which includes a primary float valve which allows liquid to flow into a pool reservoir when the level of fluid in the reservoir is below a first predetermined level and a secondary float valve associated with the primary flow valve which shuts off the flow of fluid into the pool reservoir when the level of liquid in the pool reservoir exceeds a second predetermined level which is higher in elevation than the first predetermined level. The primary valve continually operates between open and closed states. The secondary valve is normally in an open state and when it is caused to go to a closed state it remains closed until it is manually reset.Type: GrantFiled: May 10, 1985Date of Patent: June 3, 1986Inventor: Herbert Magnes
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Patent number: 4549570Abstract: A monitoring system (10) for a fluid waste disposal system is provided. Fluid waste is transported from a source (12) through a valve (16) to a reservoir (14) under access control provided by access switches (40). The monitoring system (10) includes density circuitry (64) for monitoring the density of fluid being deposited into the reservoir (14). Level detector circuitry (90) is provided for monitoring the level of fluid which has been deposited in the reservoir (14). The monitoring system (10) further includes a counter (56) for counting the number of times the valve (16) has been actuated. Counter delay circuitry (54) provides an output to counter (56) to positively indicate that an access switch (40) has been actuated.Type: GrantFiled: October 12, 1982Date of Patent: October 29, 1985Inventors: Kenneth D. Cook, Timothy R. Proctor
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Patent number: 4538307Abstract: An improved flood level sensor has an upstanding, vented tube extending above and outside a receptacle while maintaining fluid communication with an enclosed rim of the receptacle. A partial vacuum is communicated to an orifice which is located within the tube at a height related to a limit on the level of fluid in the receptacle. The level of fluid in the tube depends upon the fluid pressure in the enclosed rim and therefore upon the fluid level in the receptacle. When the fluid level in the receptacle is below flood level, the orifice is able to relieve any partial vacuum communicated to it. However, when the level of fluid in the receptacle rises to the flood level, the fluid level in the tube rises to partially seal the orifice and prevent relief of the partial vacuum which then actuates a valve lockout device.Type: GrantFiled: August 3, 1984Date of Patent: September 3, 1985Assignee: Bradley CorporationInventors: Thomas G. Barnum, William A. Smart, Jr., Donald H. Mullett
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Patent number: RE32179Abstract: A post-mix carbonated beverage dispensing system for use in refrigerated cabinets includes a carbonator having a refillable water reservoir, a CO.sub.2 system coupled to said carbonator, a valving system, and a disposable package for containing and dispensing the syrup of the post-mix beverage at a controlled rate of flow. The water reservoir may be manually refilled from a water pitcher. The CO.sub.2 system includes a cylinder which is also disposed within the refrigerator cabinet and is coupled to the carbonator. The valving system may include a plurality of dispensing valves and mixing nozzles for dispensing different selected beverages depending upon which of the valves is actuated. In addition, carbonated water alone may be dispensed. The disposable syrup package includes a plastic container having a flow rate control tube therein and means in said flow rate control for precluding spillage of syrup when the package temperature becomes elevated from opening and closing the refrigerator door.Type: GrantFiled: November 16, 1984Date of Patent: June 10, 1986Assignee: The Coca-Cola CompanyInventors: Jason K. Sedam, William R. Fuerst