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7404 results about "Liquid level sensor" patented technology
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Pump system for negative pressure wound therapy
ActiveUS20070219532A1Reduce the possibilityTrend downWound drainsMedical devicesLevel sensorEngineering
A pump system for applying negative pressure to a wound, including a flow monitor capable of detecting a deviation from a reference airflow rate provided by a controlled leak to determine whether the system is operating normally or abnormally, and a flow status annunciator to indicate a normal operating condition or whether an abnormal condition is a leak or an occluded line in the system. The pump system further includes a pressure controller for regulating operation of a pump to control pressure in the system at a range around a user-selected setpoint. The pump system may also include a waste collector and a level sensor for detecting when the collector is full.
Owner:PAUL HARTMANN AG
Container Having Multiple Compartments Containing Liquid Material for Multiple Wafer-Processing Chambers
InactiveUS20130014697A1Low costReduced footprintLiquid surface applicatorsChemical vapor deposition coatingProduct gasLiquid surfaces
A container for containing a liquid material for processing a wafer includes: a container body; a divider dividing the interior of the container body and defining compartments fluid-tightly sealed off from each other except for bottom portions of the compartments; gas inlet ports for introducing gas to the respective compartments and gas outlet ports for discharging gas from the respective compartments; and a liquid level sensor provided in one of the compartments for keeping a liquid surface of a liquid material above the bottom portions when the container is in use conditions.
Owner:ASM JAPAN
Pump system for negative pressure wound therapy
InactiveUS20110077605A1Minimize the possibilityReduce the possibilityMedical devicesIntravenous devicesControl systemLevel sensor
A pump system for applying negative pressure to a wound, including a flow monitor capable of detecting a deviation from a reference airflow rate provided by a controlled leak to determine whether the system is operating normally or abnormally, and a flow status annunciator to indicate a normal operating condition or whether an abnormal condition is a leak or an occluded line in the system. The pump system further includes a pressure controller for regulating operation of a pump to control pressure in the system at a range around a user-selected setpoint. The pump system may also include a waste collector and a level sensor for detecting when the collector is full.
Owner:PAUL HARTMANN AG
System for managing inventory of bulk liquids
ActiveUS20100322822A1Read intuitivelyReduce laborPreparing sample for investigationMaterial analysis by optical meansHigh ratePipette
A system for managing bulk liquids for an automated clinical analyzer. The system comprises (a) at least one local reservoir for storing a bulk liquid for impending use, (b) at least one container for holding a bulk liquid before the liquid is transferred to a local reservoir, and (c) a controller for monitoring the level of a bulk liquid in a local reservoir. The local reservoir for storing a bulk liquid for impending use can be a trough. The use of troughs for storing a reagent, a diluent, or some other treating agent for impending use enables an aspirating / dispensing device having a plurality of pipettes to aspirate and dispense the reagent, diluent, or other treating agent at a high rate of throughput. The controller can monitor the level of a liquid in (a) a local reservoir for storing a bulk liquid for imminent use and the level of liquid in a (b) container for holding a bulk liquid before the liquid is transferred to a local reservoir. In the laboratory automation system described herein, the container for holding a bulk liquid before the liquid is transferred to a local reservoir can be a bottle. Other desirable features in the system include, but are not limited to, pump(s), valves, liquid level sensors.
Owner:ABBOTT LAB INC
Liquid level sensor for a chemical source vessel
ActiveUS20210041284A1Well formedLiquid surface applicatorsLevel indicators by dip membersLiquid stateEngineering
A chemical vessel used for holding a liquid chemical precursor is disclosed comprising a liquid level sensor tube. The liquid level sensor tube is configured to operate in an environment where the liquid chemical precursor is heated to a point of boiling or vaporization. The liquid level sensor tube comprises housing with a slot built in to prevent any false readings of sensors disposed within the liquid level sensor tube.
Owner:ASM IP HLDG BV
Reagent supply vessel for chemical vapor deposition
InactiveUS6077356AEasy constructionLiquid transferring devicesLiquid dispensingSemiconductor materialsGas phase
A liquid reagent dispensing assembly, comprising a gas-pressurizable vessel including a floor, and an interior volume bounded by interior wall and floor surfaces. A dip-tube liquid discharge conduit is employed for discharging liquid from the gas-pressurized vessel. The vessel is provided with a liquid level sensor for sensing liquid reagent level in the vessel interior volume. The floor of the vessel has a cavity therein extending downwardly from the surface of the floor, and the lower end of the dip tube is positioned in the cavity. The dispensing assembly of the invention may usefully be employed for dispensing of reagents such as precursors for deposition of materials in the manufacture of semiconductor materials and devices, and achieves a high level of withdrawal of the reagent liquid from the vessel.
Owner:ENTEGRIS INC
Capacitive liquid level indicator
A capacitive liquid level indicator having a capacitive sensor array superposed on each side of a dielectric substrate, wherein the sensor signal detection electronics are located immediately adjacent each capacitive sensor. These provisions result in high sensitivity of detection of submergence in the liquid, as well as essentially eliminating parasitic electric fields. The preferred capacitive sensors are interdigitated capacitors, and the preferred sensor signal detection circuit is an RC bridge and a comparator, wherein the comparator senses a voltage difference in the RC bridge between a sensor resistor and sensor capacitor of a first leg thereof and a reference resistor and reference capacitor of a second leg thereof. It is preferred for the capacitive liquid level indicator to be coated with a low dielectric conformal coating to thereby insulate the electronic components (inclusive of the capacitive sensors) thereof with respect to the liquid into which it is submerged. The sensitivity of the capacitive liquid level sensor according to the present invention is extremely high; as a result, a reference capacitive sensor is obviated, and there are no false indications of liquid due to any film of the liquid clinging to an exposed portion of the capacitive liquid level sensor.
Owner:GDM
Liquid consumption tracker
Provided is a sensor operative to track changes in a liquid level of a hand-held liquid container, the sensor comprising: an ultrasonic liquid-level sensor configured to indicate a liquid level of a liquid in a hand-held liquid container, wherein the ultrasonic liquid-level sensor is capable of indicating the liquid level when the surface of the liquid is less than 20 centimeters away from the ultrasonic liquid-level sensor; a radio transmitter; and a processor configured to draw power from a portable power source, receive liquid-level indications from the ultrasonic liquid-level sensor, and cause the radio transmitter to transmit data indicative of changes in the liquid level.
Owner:TRAGO
Isolated capacitive fluid level sensor
InactiveUS7258005B2Reliable separationEasy to addMachines/enginesLubrication indication devicesElectricityCapacitance
A capacitive fluid level sensor is disclosed that operates without the use of a float, wherein coplanar sensing electrodes disposed onto a dielectric substrate and positioned proximate a dielectric wall of a vessel containing a fluid, form a fringing field capacitance that changes in accordance with changes in the level of the fluid. The electrodes are electrically insulated from the measured fluid. The electrodes are sized and spaced to maximize response of the capacitance to changes in the level of the fluid, while minimizing the effects of the dielectric wall. The sensor is fabricated such that it can be positioned against the outside of a dielectric wall of a vessel, or embedded within a dielectric material. A low permitivity spacer and shield assembly are taught which reduces sensitivity to electric fields external to the vessel. An interdigital comb configuration of the electrodes is also disclosed in which depressions or gaps are formed into the dielectric substrate in an area of spacing of the electrodes.
Owner:NYCE DAVID SCOTT
Fluid delivery system having a fluid level sensor and a fluid control device for isolating a patient from a pump device
ActiveUS7556619B2Reduce and eliminate flowReduce fluid pressureInfusion syringesMedical devicesFluid controlValve actuator
The fluid delivery system generally includes a source of injection fluid, a pump device a fluid path set disposed between the source of injection fluid and the pump device, and a fluid control device. The fluid path set includes a multi-position valve. The fluid control device is operatively associated with the fluid path set and includes a valve actuator adapted to operate the multi-position valve. The valve actuator is adapted to close the multi-position valve to isolate the pump device from a patient and stop flow of the injection fluid to the patient at substantially any pressure or flow rate generated by the pump device for delivering a sharp bolus of the injection fluid to the patient. The valve actuator is generally adapted to selectively place the pump device in fluid communication with the source of injection fluid for supplying the injection fluid to the pump device and the patient.
Owner:BAYER HEALTHCARE LLC
Portable IV infusion mornitoring system
InactiveUS20070293817A1Improve detection accuracyLow reliabilityMedical devicesFlow monitorsSignaling networkBottle
A portable infusion monitoring system displays the liquid level and flow rate data during infusion process, as well as gives an alarm for patents and nurses in hospital as the medical liquid in an IV bottle drops to a predetermined low level. This system comprises a set of liquid level sensor, a microprocessor, and a monitor terminal. The liquid level sensor generates an electric signal related to the liquid level inside the IV bottle. The microprocessor analyzes the electric parameters detected from the electric signal, and obtains the liquid level data. The liquid level data are sent to the monitor terminal for display, and an alarm is activated when the medical liquid inside the IV bottle drops to a predetermined low lever. Further functions of the monitor terminal includes an automatic switch to cut off the IV feeding process and send the alarm signal to a nurse station through signal network by wire or wirelessly. Several interference filtering methods are applied to increase signal / noise ratio, and therefore warrant the operation reliability.
Owner:FENG JUN +1
Level Sensor for Conductive Liquids
A sensor for measuring a level of a conductive liquid, is provided. The sensor includes at least two electrodes that can be positioned in a holding tank so as to be partially submerged in the conductive liquid, sensor leads coupled to the at least two electrodes, and circuitry and a controller for determining the properties of the electrolyte, the circuitry being coupled to the at least two electrodes via the sensor leads, and the controller being coupled to the circuitry. The sensor may be used as an electrolyte level sensor in a flow battery system.
Owner:IMERGY POWER SYST
Multi-Function Sensor
InactiveUS20080107151A1Simple and compact designReduce manufacturing costVibration measurement in solidsThermometer detailsTurbidityEngineering
A multi-function sensor is disclosed for measuring the conditions within a container, such as fluid level, turbidity, temperature and pressure. The sensor incorporates a fluid level sensor module, a turbidity sensor module, a temperature sensor module and a pressure sensor module. The fluid level sensor module utilizes a plurality of thermocouple junctions grouped in pairs with the pairs being spaced along a line extending generally in the direction in which the liquid level may vary. The thermocouple junctions are connected in series and produce a signal indicative of the level along the sensor. Turbidity, temperature, and pressure sensor modules may also be incorporated in the multi-function sensor. Alternatively, a fluid flow rate sensor module may be included in place of the liquid level sensor module.
Owner:THERM O DISC
Three-dimensional printing formation unit and method
InactiveCN1739946AEasy to makeIncrease profitCoatingsSpecial data processing applicationsLiquid tankEngineering
The three-dimensional printing formation unit includes one X-Y work bench and one elevating platform. The X-Y work bench has lower liquid tank with bottom liquid support medium, and upper nozzle with downward spout, over liquid level sensor. The lower liquid tank has liquid support material and bottom flow guide hole, the elevating platform is located inside the liquid support material, and the flow guide hole is connected via duct with pump. The three-dimensional printing formation method includes spraying the forming material via the nozzle, forming on the liquid support material surface and based on the cross section data, curing the forming material on the surface of the support material to form one layer of the part, lowering the work bench for one layer of thickness for the painting of the next layer, and adhering the adjacent layer to form three-dimensional body. The present invention has the advantages of no need of special support structure, simple part making process, high material utilization, etc.
Owner:SHANGHAI UNIVERSITY OF ELECTRIC POWER
Electric pressure cooker vapor exhausting device
InactiveCN108577514AEasy to install and disassembleEasy to usePressure-cookersWater vaporEngineering
The invention discloses an electric pressure cooker vapor exhausting device which structurally comprises an electric pressure cooker, a pot cover, a water collecting tank, an exhausting device and a control panel. The control panel is arranged at the front portion of the electric pressure cooker. A power line is arranged at the rear portion of the electric pressure cooker. The left side of the electric pressure cooker is connected with the water collecting tank through a buckle. A silica gel seal ring is arranged on the top of the electric pressure cooker by a circle. The pot cover is arrangedon the top of the electric pressure cooker. The right portion of the pot cover is in threaded connection with a fixed base. A handle is arranged on the top of the fixed base. The left portion of thehandle is connected with the exhausting device. The water collecting tank is composed of a liquid level sensor, an alarm device, a concave hole and a natural rubber seal ring. The exhausting device comprises a fixed column, a synthesized rubber seal ring, a telescopic elastic head, a vapor inlet, a vapor guide pipe, a liquefied device and an exhaust pipe. The electric pressure cooker vapor exhausting device is convenient to install and detach, high in sealing performance and high in intelligence and efficiently senses the vapor liquid level.
Owner:黄文才
Method and system of a network of diffusers including a liquid level sensor
Systems and methods for managing scent in an environment include disposing a plurality of scent diffusion devices within an environment, wherein the diffusion devices include a communications facility that enables transmitting signals to and receiving signals from a remote computer and disposing at least one sensor within the environment that transmits sensor data to the remote computer. At least one scent parameter for scenting an environment is received at the remote computer. The remote computer controls diffusion of a liquid from a source of a liquid in fluid communication with at least one of the plurality of scent diffusion devices to achieve the scent parameter. Controlling includes setting or adjusting an operation parameter of the scent diffusion device in response to the sensor data.
Owner:SCENTBRIDGE HLDG LLC
Integral cabinet type water quality automatic monitoring device
ActiveCN101699295ALow costReduce the cost of land acquisition areaWithdrawing sample devicesTesting waterInstrument functionWater quality
The invention relates to an integral cabinet type water quality automatic monitoring device which comprises a communication and electric control functional area, a measurement instrument analysis functional area, a water collection and distribution functional area and a subsidiary functional area, wherein a communication control system in the communication and electric control functional area comprises a central main control module, a redundant main control module and a drive control unit having sub-functions of water collection and distribution pretreatment, measurement instrument analysis, environment control, entrance guard and safety prevention; all test instruments in the measurement instrument analysis functional area are designed by standard modularization, can be configured according to the requirement of a client and are assembled in a modularization way; in the water collection and distribution functional area, water collection and distribution and water sample preliminary treatment comprise a water sample pipeline, a flushing water pipeline, a wastewater pipeline, a rough grid filtering and sampling head, a water pump, a sand deposition device, a primary filter, a liquid level sensor, a circulation tank, a water quality probe sensor and an alga removing device; and the subsidiary functional area comprises a real-time environment monitoring module, an entrance guard and safety prevention module, an exceed-standard sample retainer and a power supply module of a fuel-fed generator.
Owner:YIWEN ENVIRONMENTAL SCI & TECH GUANGZHOU
Airborne, tethered, remotely stabilized surveillance platform
An airborne surveillance platform supporting optoelectronic and electronic sensors, including level sensors, is automatically stabilized in a horizontal plane by varying the length of two tethers out of three. Error signals from the level sensors are transmitted over a wireless link to control components on a rotating platform on the host vehicle, which automatically vary the length of tethers. Applications include images of the surrounding terrain generated by a video camera and a thermal imager in military, police and civil emergency operations.
Owner:PETROV DIMITRI
Fuel level sensor
InactiveUS20050103103A1Easy to installEasy to adaptMachines/enginesLubrication indication devicesFuel tankResistor
A fuel level sensor for sensing and monitoring the level of remaining fluid in a container such as a fuel tank for a motorized vehicle is disclosed. The fuel level sensor incorporates an improved float and pivot arm member attached to a hub that rotates about a pivot base. The conventional resistor card technology, commonly found in automotive applications for translating the position of the float into an electrical signal, is replaced by a more reliable non-contact magnetic flux sensing circuit. The fuel level sensor incorporates a magnetic sensor and magnetic circuit in a commonly known and practiced rotational position sensor configuration for determining the angular position of a hub relative to its pivot base, where the hub is attached to a conventional float-arm member and the base remains stationary relative to the fuel container. The preferred embodiment includes a magnetic flux sensor positioned between two movable magnets. The magnetic flux sensing element is a Hall effect integrated circuit, magnetoresistor, magnetodiode, magnetotransistor, or similar magnetic flux sensing element with associated electronic circuitry having adjustable or programmable features including ratiometry, gain, offset voltage, temperature coefficient, and output signal range limiting. Critical electronic components are hermetically sealed making the fuel level sensor fully submersible in fuel for long term fuel exposure.
Owner:UUSI
Level sensor and dispenser
ActiveUS20130240554A1Easy to installLong life-timeCoin-freed apparatus detailsDomestic applicationsLevel sensorEngineering
A solution for detecting level of a consumable tissue product (201, 301) in a tissue dispenser (103, 106) located in a washroom. This is provided in a number of aspects such as a tissue dispenser, a method, system, and a sensor unit utilizing two sensor elements (420, 430), each arranged to measure light reflected from a reflection field located on the tissue product, reflected directly from the tissue product, or measure the absence of the tissue product. Data from the sensor elements are wirelessly transmitted to a server (901) for further handling, such as for instance notification to a janitor in charge of service of the washroom.
Owner:ESSITY HYGIENE & HEALTH AB
Single light source uniform parallel light curtain
ActiveUS7872746B2Prevents physical contaminationEye surgeryWithdrawing sample devicesSensor arrayAxis of symmetry
A continuous high resolution fluid level monitoring system is provided by embodiments of the present invention. This continuous high resolution fluid level monitoring system includes a unique fluid level sensor having a point light source, parabolic reflector, sensor array, and detection, processing and control system. The point light source illumines a parabolic reflector wherein the point light source is located at the focus of the parabolic reflector. The parabolic reflector reflects light from the point light source to produce a parallel light curtain. This parallel light curtain is parallel to an axis of symmetry of the parabolic reflector. The parallel light curtain illumines a chamber such as a chamber in an ophthalmic surgical device used to contain surgical fluid. The sensor array coupled to the chamber detects the parallel light curtain illuminating the chamber. The sensor array provides an output to a detection / processing / control system in order to determine the fluid level within the chamber. This optical method of determining the surgical fluid levels may be advantageous in that it prevents physical contamination of the surgical fluids.
Owner:ALCON INC
Means and method for a liquid metal evaporation source with integral level sensor and external reservoir
InactiveUS20050229856A1Long operating timeReduce hydrostatic pressureVacuum evaporation coatingSputtering coatingEvaporation (deposition)Engineering
A liquid metal evaporation source for use in Molecular Beam Epitaxy and related metal vacuum deposition techniques. An evaporator is maintained at a high temperature to evaporate a liquid metal, a reservoir for holding the liquid metal source is maintained at a temperature above the melting point of the metal but below the temperature in the evaporator, and a hollow transport tube connecting the evaporator and reservoir is maintained at a temperature between these temperatures. The reservoir is in the shape of a hollow cylinder with a close-fitting cylindrical piston which is used to force the liquid metal through the hollow transport tube into the evaporator. The liquid metal will not flow past the piston seal if a suitably small gap is formed between the piston and the reservoir walls wherein the surface tension of the liquid metal will exceed its hydrostatic pressure against the piston thus forming a leak-tight seal.
Owner:RJM SEMICON
Condensate overflow prevention apparatus
A condensate overflow prevention assembly prevents condensate overflow in an air cooling system using a fluid level sensor and a pump activated by the fluid level sensor to pump the condensate away from a drainage system when a blockage occurs in the drainage system.
Owner:RECTORSEAL
Power trailer support structure an leveling system
InactiveUS20060226612A1Reduce saggingVehicle fittings for liftingVehicle cleaning apparatusProgrammable logic controllerLevel sensor
A power trailer support structure and leveling system continuously monitors the levelness a trailer containing the machinery train of a mobile power system. The invention can level the power trailer automatically while the gas turbine and electrical generator in the trailer are shut down, and can monitor and provide alarm and shut down protection when the gas turbine and electrical generator are operating. The invention includes a plurality of jacks and level sensors mounted to a power trailer, a programmable logic controller interconnected with the jacks and level sensors, and an interface for displaying jack positions and the output of the level sensors. A plurality of actuator mechanisms provide for automatic and manual control and a plurality of power systems between the actuator mechanisms and the jacks extend and retract the jacks in response to operation of the actuator mechanisms.
Owner:VULCAN ADVANCED MOBILE POWER SYST
Cryogenic fluid dispensing system
InactiveUS20050274127A1Vessel mounting detailsGas handling applicationsProcess engineeringHigh pressure
A mobile system for dispensing cryogenic liquid to a use point includes a low pressure bulk tank containing a supply of cryogenic liquid and a high pressure sump in communication with the bulk tank so as to receive cryogenic liquid therefrom. A check valve is in circuit between the bulk tank and the sump. A heat exchanger is in communication with the sump and selectively receives and vaporizes a portion of cryogenic liquid from the sump when the sump is full as detected by a liquid level sensor. The resulting vapor is directed to the sump so as to increase the pressure therein. The check valve closes when the pressure building within the sump is initiated. The pressurized cryogenic liquid is dispensed from the sump via a dispensing hose. Operation of the system valves is automated by a controller.
Owner:CHART INC
Fuel level sensor
InactiveUS7093485B2Easy to installEasy to adaptMachines/enginesLubrication indication devicesFuel tankEngineering
Owner:UUSI
Automatic sampler of water quality sampling UAV (Unmanned Aerial Vehicle)
ActiveCN105571904AReduce weightImprove performanceWithdrawing sample devicesUncrewed vehicleWater quality
The invention discloses an automatic sampler of a water quality sampling UAV (Unmanned Aerial Vehicle). The automatic sampler comprises a main body support, a fixed height sensor, a water sample collecting device, a lifting device, a sample dividing device, a sample storage device and a control circuit board, wherein the water sample collecting device comprises a submersible pump, a pressure and liquid level sensor, a flexible water pipe and a flow sensor and is capable of completing fixed-depth sampling; the lifting device comprises a servo motor, a magnetic encoder, a reduction gear, a slip ring, a bearing, a proximity switch, a telescopic rod and a ceramic eye component and is capable of realizing retracing and releasing functions of the water sample collecting device; the sample storage device is formed by three layers of detachable plastic bottles. According to the automatic sampler disclosed by the invention, the weight of the automatic sampler can be effectively reduced, and the performance of the whole water quality sampling UAV is increased; meanwhile, the fixed-depth sampling is realized through the lifting device and the pressure and liquid level sensor which is additionally arranged in a sampling opening, the water quality collecting device can be retracted during a flying process of the water quality sampling UAV, and the safety during the flying process of the water quality sampling UAV is increased.
Owner:WUHAN BOGAN SPACE TECH CO LTD
Concrete pump intelligent monitoring and control system
InactiveCN101178061AImprove performanceRealize intelligencePump controlBuilding material handlingElectric machineControl system
The invention discloses a concrete pump intelligent monitoring and control system. A magnetic telescopic displacement sensor is respectively arranged on the piston rod of the main cylinder of a concrete pump; pressure sensors are respectively arranged on a main pump hydraulic system, a concrete pump main cylinder, a swing hydraulic system, a swing cylinder, a concrete conveying cylinder piston, a concrete pump outlet, a concrete pump supporting leg hydraulic system, and a mixed hydraulic system; the outlet of the main cylinder and the outlet of an auxiliary pump are respectively provided with flowmeters; a rotation speed sensor is arranged on a motor mainshaft; a switch sensor is respectively arranged at the position of a concrete water tank; a temperature sensor and a liquid level sensor are arranged at the position of a concrete pump oil tank; all parts are respectively connected with the concrete pump and a PLC; the PLC is respectively connected with an alarm indicator device, a contact screen, an upper bit computer, and a wireless communication module. The invention can implement timely, online and remote state monitoring, malfunction diagnosing and intelligent control, so as to improve the integration performance of the concrete pump.
Owner:ZHEJIANG UNIV
Air conditioner condensation pan overflow protection
InactiveUS20020000093A1Eliminating condensed water overflowMechanical apparatusCondensate preventionLiquid level sensorCircuit breaker
A liquid level sensor (100) is added to air conditioner condensation pan(s) (40 and / or 50) to prevent overflow and subsequent house damage by turning off the compressor (80) and the fan (20) by means of a circuit breaker (120) and associated electronics (110).
Owner:LEA DORIS W
Grooming device with leveling indicators
A grooming device includes a level sensor and at least two light emitting diodes operatively connected to the level sensor to indicate the level state of the grooming device. By activation of a power switch, current is permitted to flow from a power supply to the level sensor. The level sensor is thus powered to enable determining whether the grooming device is in a level orientation. In response to this determination, the sensor sends a signal to at least one of the light emitting diodes indicating to the user of the device whether the device is level.
Owner:BEECH JACK
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