子分类：
| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 41 | System for measuring non-volatile residue in ultra pure water | US11935810 | 2007-11-06 | US07777868B2 | 2010-08-17 | David B. Blackford; Frederick R. Quant; Derek R. Oberreit |
| A system for monitoring non-volatile residue concentrations in ultra pure water includes a nebulizer for generating an aerosol composed of multiple water droplets, a heating element changing the aerosol to a suspension of residue particles, and a condensation particle counter to supersaturate the dried aerosol to cause droplet growth through condensation of a liquid onto the particles. The nebulizer incorporates a flow dividing structure that divides exiting waste water into a series of droplets. The droplets are counted to directly indicate a waste water flow rate and indirectly indicate an input flow rate of water supplied to the nebulizer. The condensation particle counter employs water as the condensing medium, avoiding the need for undesirable chemical formulations and enabling use of the ultra pure water itself as the condensing medium. | ||||||
| 42 | AUTOMATIC PRECISION NON-CONTACT OPEN-LOOP FLUID DISPENSING | US12131952 | 2008-06-03 | US20080253934A1 | 2008-10-16 | Nicholas M. DiTrolio; Eric L. Canfield |
| A rugged, all-electronic fluid dispensing system for use with pipettes or in other contexts indirectly measures fluid flow by using a non-linear system model to correlate vacuum existing at the top of a column of suspended fluid. Non-contact operation is provided to eliminate the need for contact-type closed-loop fluid flow sensing and associated potential cross-contamination risks. In one particular exemplary non-limiting illustrative implementation, an electronic controller within a gun-shaped, cordless self-contained pipetter housing dynamically calculates valve opening time based on a non-linear equation. Calibration is used to derive equation constants, and column vacuum pressure before the valve is opened is used as the independent variable to derive a valve opening time that will result in accurate dispensing of a desired programmed fluid quantity. Repetitive automatic dispensing with accuracies greater than 1% are possible within the context of a relatively inexpensive portable pipette or device without the need for mechanically-complex positive displacement arrangements. | ||||||
| 43 | Piezoelectric-drop-on-demand technology | US09687627 | 2000-10-13 | US06537817B1 | 2003-03-25 | Roeland F. Papen |
| A method and apparatus for cleaning the interior of capillary tubes used to dispense 1 to 100 micron diameter liquid droplets by a piezoelectric transducer surrounding each capillary tube. Magnetic particles are aspirated into the capillary tubes and moved by an exterior magnet to cause deposits on the interior walls to be dislodged and subsequently discharged from the capillary tube. In a preferred embodiment, the magnetic particles are coated with a material capable of binding such deposits, e.g., DNA, RNA, and the like. | ||||||
| 44 | Microvolume liquid handling system | US77522901 | 2001-02-01 | US6422431B2 | 2002-07-23 | PELC RICHARD E; CHIBUCOS NICHOLAS S; PAPEN ROELAND F; MEYER WILHELM |
| In one embodiment, a microvolume liquid handling system includes a microdispenser employing a piezoelectric transducer attached to a glass capillary, a positive displacement pump for priming and aspiring transfer liquid into the microdispenser, controlling the pressure of the liquid system and washing the microdispenser between liquid transfers, and a pressure sensor to measure the liquid system pressure and produce a corresponding electrical signal. The pressure signal is used to verify and quantify the microvolume of transfer liquid dispensed and is used to perform automated calibration and diagnostics on the microdispenser. In another embodiment of the microvolume liquid handling system, a system reservoir is connected with tubing to a pressure control system for controlling the liquid system pressure in the system reservoir. The system reservoir is coupled to one or more microdispenser through a distribution tube having a branched section for each microdispenser. In this embodiment, each microdispenser is coupled to its own flow sensor and which enables a system controller to respectively measure and control the flow of liquid in each dispenser. | ||||||
| 45 | Microvolume liquid handling system | US09056233 | 1998-04-07 | US06203759B1 | 2001-03-20 | Richard E. Pelc; Nicholas S. Chibucos; Roeland F. Papen; Wilhelm Meyer |
| In a microvolume liquid handling system, a system reservoir is connected with tubing to a pressure control system for controlling the liquid system pressure in the system reservoir. The system reservoir is coupled to one or more microdispensers through a distribution tube having a branched section for each microdispenser. In this embodiment, each microdispenser is coupled to its own flow sensor and to enable a system controller to respectively measure and control the flow of liquid in the each microdispenser. | ||||||
| 46 | Milking system including a milk quantity meter | US620216 | 1996-03-22 | US5792964A | 1998-08-11 | Karel van den Berg |
| A quantity meter for determining the quantity of liquid flowing through a line is provided with at least two electrically conducting elements arranged in the line spaced from each other and being in communication with an electronic circuit. This electronic circuit determines the quantity of liquid which has flowed through the line on the basis of the electric conductivity of the liquid, the length of the interval of time during which a unit of milk passes between the two electrically conducting elements, the distance between the electrically conducting elements, the rate of flow of the liquid and the specific electrical resistance. | ||||||
| 47 | Flow detector | US546733 | 1995-10-23 | US5621392A | 1997-04-15 | Francesco Paolini; Marco Paraluppi; Luca Vinci |
| A liquid flowed detection system is disclosed for monitoring continuous and discontinuous liquid flow in a fluid circuit. The system includes a holding device for maintaining a drip chamber so that its elongated axis generally lies in a vertical plane. A light emitter is oriented to transmit light along an optical path through the drip chamber and intersecting its elongated axis. A light detector located in the optical path opposite the light emitter, generates a signal representative of light received from the light emitter. A processor receives information from the detector and generates a control signal representative of a variability over time of the light detector signal. When the control signal drops below a predetermined level, a flow absence signal is generated which is then correlated to the system's pump velocity corresponding to a time interval (T). If the flow absence signal occurs continuously in a comparison time interval (T), a warning signal is generated. | ||||||
| 48 | Method and apparatus for measuring a value corresponding to the mass of a milk slug, and of the corresponding milk flow | US858169 | 1992-03-26 | US5245946A | 1993-09-21 | Tilman Hoefelmayr; Jakob M. Jun |
| A method and apparatus useful in the course of a milking operation in which the milk is intermittently conveyed in the form of separate milk slugs, to accurately determine the mass of the individual milk slugs and to thereby determine the actual milk flow rate. A measuring apparatus of this type is particularly suitable for use as an indicator operable to indicate a drop in the milk flow to below a predetermined value at the end of a milking cycle. An additional operation of measuring the travel speed of the individual milk slugs results in an extremely simple milk flow measuring device being obtained, which is capable of relatively accurately measuring the milk flow rate throughout the milking cycle. | ||||||
| 49 | Pumping system | US474154 | 1990-02-02 | US5125801A | 1992-06-30 | Frederick A. Nabity; Paul G. Wright; Raymond Hulinsky; Douglas T. Carson |
| To draw samples from a source of liquid, a pumping system measures the amount of liquid being pumped by detecting pump cycles and calculating the pumped liquid from this measurement and stored data including conduit size, pressure head and statistical data to correlate detected pump cycles with volume of liquid pumped. Pressure pulses caused by a peristaltic pump are sensed by a piezoelectric film positioned on an inlet conduit connecting the pump to the source of water and, when the liquid reaches a predetermined point determined by the nature of the pulses, the pulses are counted to determine the number of pump cycles. | ||||||
| 50 | Means for counting drops | US674406 | 1984-11-23 | US4635281A | 1987-01-06 | J. Paul Jones |
| A light source to project a light beam along an axis to a receiver means intermediate the source and the receiver to cause the light to refract so that the light reaching the receiver is substantially reduced; means to periodically introduce a quantity of liquid into the area where the light is refracted, the liquid changing the amount of refraction whereby the light reaching said receiver is substantially increased; and means to detect each said change in light at said receiver and count same. | ||||||
| 51 | Wave velocity detecting schemes for traveling wave flow meter | US268940 | 1981-06-01 | US4409830A | 1983-10-18 | Joannes M. M. de Jong; Richard L. Earle; Richard K. Somes |
| In a flow meter of the traveling wave type having a flexible undulating membrane, velocity detecting means is utilized to determine the velocity of propagation of the traveling wave associated with the undulating flexible membrane between at least two known locations on the flexible membrane. The velocity of propagation is proportional to the volumetric flow rate of fluid through the flow meter. | ||||||
| 52 | Flow monitoring method and apparatus | US156718 | 1980-06-05 | US4372150A | 1983-02-08 | Donald E. Stephens; Robert J. Ehret |
| A method and apparatus for monitoring flow rate through a conduit. A flow number indicative of the flow rate of a liquid through the conduit is compared with a preselected reference number. The actual liquid flow through the conduit provides a clocking signal which determines the time span during which a count signal, indicative of the intended flow rate into the conduit, is accumulated thereby providing the flow number. | ||||||
| 53 | Stactometric apparatus | US58932 | 1979-07-19 | US4286590A | 1981-09-01 | Masakazu Murase |
| A counter counts the time intervals of falling instilled drops in response to a signal issued each time a falling instilled drop is detected. A memory is supplied with data representing the quantities of a falling instilled drop corresponding to the time intervals at which the drops fall. The data corresponding to the time intervals thereof which have been counted by the counter are read out of the memory. The data thus read out are accumulated to determine the total quantities of the drops. | ||||||
| 54 | Method of increasing the measuring resolution of a flow measuring instrument where the flow is divided into sections of well defined volume | US24746172 | 1972-04-25 | US3815414A | 1974-06-11 | HELLSTROM K |
| The resolution of a device, which measures the flow of liquid in a tube by producing a series of signals each of which corresponds to the passage through the tube of a predetermined volume of liquid, is increased by the introduction of additional signals at a rate which is a predetermined multiple of the basic signals and utilizing these additional signals, coordinated with the basic signals, to indicate the passage through the tube of fractional amounts of the volume measured by each of the basic signals.
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| 55 | FLUID FLOW DEVICE | US15408105 | 2017-01-17 | US20180200431A1 | 2018-07-19 | Axel Nackaerts; Micha Benjamin Disselkoen |
| One example discloses a fluid flow device, including: a drop chamber, having an interior, a fluid input, and a fluid output; a drop detector coupled to the drop chamber and configured to detect a fluid drop at the fluid input; a pressure sensor configured to monitor a pressure in the interior of the drop chamber; and a flow rate device configured to determine a fluid flow rate based on a number of fluid drops detected over a time period, and the pressure in the interior of the drop chamber. | ||||||
| 56 | Yield monitoring apparatus, systems, and methods | US15631931 | 2017-06-23 | US09989395B2 | 2018-06-05 | Justin Koch; Michael Strnad |
| Apparatus, systems and methods are provided for monitoring yield while harvesting grain. Grain released from paddles on the clean grain elevator chain of a harvester contacts a flow sensor which reports the rate of grain flow through the clean grain elevator. In some embodiments a brush is mounted to the chain and disposed to clean the flow sensor surface. In other embodiments a bucket mounted to the clean grain elevator chain releases grain against the flow sensor at a rate dependent on a grain property. | ||||||
| 57 | NON-INVASIVE FLUID FLOW DETECTION USING DIGITAL ACCELEROMETERS | US15793745 | 2017-10-25 | US20180106652A1 | 2018-04-19 | Jamie Evans; Stephen McSorley |
| A system for estimating fluid flow in a system including a pump and a fluid vessel operatively coupled to the pump via a conduit is described herein. The system comprises an accelerometer affixed to an exterior surface of the conduit, wherein the accelerometer is configured to generate signals representing physical movement of the conduit, and wherein the signals are suitable for estimating fluid flow in the conduit. | ||||||
| 58 | Facility for processing a multiphase fluid and method for characterizing said fluid online | US14427823 | 2013-09-18 | US09945833B2 | 2018-04-17 | Bertrand Jean Szymkowiak; Yves Louis Léon Marie Lecoffre; Guillaume Daniel Ghislain Maj |
| A plant (1) for the treatment of a multiphasic fluid and method for line-characterization of the fluid wherein the plant (1) comprises a circuit (4) within which the fluid is intended to circulate and being characterized in that it comprises a characterization tool (3) comprising at least an analysis settler (6) adapted to separate the phases to obtain so-called separated phases and a means (9) for combining the separated phases. The plant (1) is designed so that a fraction of the fluid circulating within the circuit (4) circulates within the tool (3) to pass through the analysis settler (6) so that the phases of the fluid are separated then discharged into the circuit (4). The combining means (9) is designed so as to combine the separated phases. | ||||||
| 59 | TEMPORAL BASED MEASUREMENT SYSTEM PROVIDING REAL TIME TRACKING | US15713599 | 2017-09-22 | US20180100751A1 | 2018-04-12 | Christopher M Toner |
| A measurement system for providing real-time tracking. The measurement system includes a system tracking measurement unit, a system tracking processing unit, and a user interface device for receiving data corresponding to one or more system conditions over an electronic communications channel, the user interface device including a display. The system tracking measurement unit calculates temporal flow data when the orientation of one or more objects corresponds to an event trigger value and transmits the data to the system tracking processing unit. The system tracking processing unit determines one or more tracking parameters based on the temporal flow data. In addition, the system tracking processing unit determines one or more system conditions based on the one or more tracking parameters. The system tracking processing unit transmits data corresponding to the system conditions for display on a user interface device. | ||||||
| 60 | YIELD MONITORING APPARATUS, SYSTEMS, AND METHODS | US15631931 | 2017-06-23 | US20170292867A1 | 2017-10-12 | Justin Koch; Michael Strnad |
| Apparatus, systems and methods are provided for monitoring yield while harvesting grain. Grain released from paddles on the clean grain elevator chain of a harvester contacts a flow sensor which reports the rate of grain flow through the clean grain elevator. In some embodiments a brush is mounted to the chain and disposed to clean the flow sensor surface. In other embodiments a bucket mounted to the clean grain elevator chain releases grain against the flow sensor at a rate dependent on a grain property. | ||||||
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