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| Number | Title | Issue Date |
| 7390412 | Method of managing the valves of a simulated moving bed separation system A method of managing the valves of a simulated moving bed separation system comprising at least one column of adsorbent beds split into several zones delimited by injection and draw-off points, allowing finer monitoring of a determined concentration profile. The met... | 06/24/2008 |
| 7369230 | Apparatus and method for measuring particulate flow rate An apparatus for measuring the rate of flow of a volume of particulate material comprising a transparent tube of known cross-sectional area, means for supplying a flow of particulate material through the transparent tube, and an optical signal sensor for receiving a... | 05/06/2008 |
| 7355320 | Reactive load resonant drive circuit Energy efficient circuitry is provided for rapid transfer of charge to and from a reactive load while avoiding excessive peak currents and significant resistive energy dissipation. For example, circuitry of the invention provides for rapid actuation of a piezoelectr... | 04/08/2008 |
| 7347945 | Method and an installation for separating out multiphase effluents The invention relates to a method and to an installation for separating out an effluent made up of a multi-phase fluid mixture. According to the invention, said installation includes gravity separator means whose geometrical separation characteristics can be adjuste... | 03/25/2008 |
| 7327045 | Fuel delivery system and method providing regulated electrical output In a mobile fuel delivery vehicle, providing bulk aircraft fuel from a pressurized fuel reservoir to an aircraft, a method of regulating electrical output of an electrical power source, includes the steps of: (a) receiving, in a fluid path, the bulk aircraft fuel fr... | 02/05/2008 |
| 7300575 | Portable filter system A filter system for receiving an aqueous-based fluid contaminated with particles and emulsified contaminant oil, removing the particles, and separating the emulsified contaminant oil from the aqueous-based fluid includes a filter media for receiving the aqueous-base... | 11/27/2007 |
| 7290544 | Arrangement in connection with feedback control system The invention relates to an arrangement in connection with a feedback control system, the arrangement comprising a controllable device (10), a measuring device (7), a controlling device (9) and a user interface by which the controlling device ( | 11/06/2007 |
| 7290841 | Hydraulic braking system including power-operated pressure source device, and device for controlling pressure output of the pressure source device Braking system including a power-operated hydraulic pressure source operable to deliver a pressurized working fluid, a brake including a hydraulically operated brake cylinder, and a flow-rate changing device disposed between the power-operated hydraulic pressure sou... | 11/06/2007 |
| 7275417 | Fueling system vapor recovery and containment performance monitor and method of operation thereof A method and apparatus for monitoring and determining fuel vapor recovery performance is disclosed. The dispensing of liquid fuel into a tank by a conventional gas pump nozzle naturally displaces a mixture of air and fuel ullage vapor in the tank. These displaced va... | 10/02/2007 |
| 7267669 | Two site infusion apparatus An apparatus for use in delivering pain medication to separate locations from a single source of pressurized medication includes a valve housing, a cap, and a flexible diaphragm. The valve housing includes a first end and a second end and an inlet passage. The first... | 09/11/2007 |
| 7263448 | Continuous flow chemical metering apparatus A continuous flow chemical metering apparatus includes a measuring vessel adapted to hold a column of fluid, a sensor for determining head pressure and a processor to establish calibration data regarding the relationship between head pressure and a height of the col... | 08/28/2007 |
| 7262693 | Process field device with radio frequency communication A field device for use in an industrial process control or monitoring system includes terminals configured to connect to a two-wire process control loop. The loop carries data and provides power to the field device. RF circuitry in the field device is provided for r... | 08/28/2007 |
| 7246635 | Automatic flow rate control valve An automatic flow rate control valve, includes a tubular body, defining a flow path between inlet apertures having a gradually variable cross-sectional area and a fluid outlet at one end; a flow control piston is axially movable within the tubular body, under opposi... | 07/24/2007 |
| 7204157 | Modular utility meter A modular utility meter, for example, a water meter, is provided which comprises a meter base and a meter head. The output signal from a transducer in the meter base is processed in the meter head to calculate the utility supply. The processing includes linearizatio... | 04/17/2007 |
| 7189580 | Method of pumping fluid through a microfluidic device A method is provided for pumping fluid through a channel of a microfluidic device. The channel has an input port of a predetermined radius and an output port of a predetermined radius. The channel is filled with fluid and a pressure gradient is generated between the... | 03/13/2007 |
| 7189581 | Method of obtaining a sample concentration of a solution in a microfluidic device A method is provided of obtaining a sample concentration of a solution in a microfluidic device. The microfluidic device includes a channel having a reservoir and a collection port. The channel is filled with a solution having particles therein. A reservoir drop is ... | 03/13/2007 |
| 7178783 | Automatic valve characterization of digital valve positioners A digital valve positioner is controlled to automatically characterize a valve to provide a linear relationship between the valve control signal and the amount of flow. ... | 02/20/2007 |
| 7155319 | Closed loop control on liquid delivery system ECP slim cell A method for controlling liquid delivery in a processing chamber. The method includes generating an analog input (AI) signal proportional to a process variable and calculating an analog output (AO) signal based on a setpoint and a deadband. The setpoint is a target ... | 12/26/2006 |
| 7140387 | Regulated gas supply system A regulated gas supply system having a body defining a pressurized gas reservoir connected to a high-pressure regulator that regulates the high pressure gas from the gas reservoir to disperse the gas at a desired pressure. The gas regulating assembly includes a pist... | 11/28/2006 |
| 7143016 | System and method for dynamic multi-objective optimization of pumping system operation and diagnostics Control systems and methodologies are disclosed for controlling a process having one or more motorized pumps and an associated motor drives, which comprise selecting a desired operating point within an allowable range of operation about a process setpoint according ... | 11/28/2006 |
| 7131451 | Apparatus for controlling and metering fluid flow A device for metering and controlling fluid flow includes a variable orifice and is configured to use a pressure sensor. The device includes a fluid flow conduit having at least one planar inner wall that extends along a portion of the fluid flow conduit length, and... | 11/07/2006 |
| 7131639 | Water distribution system for an evaporative cooler An evaporative cooler, including one or more media modules, distributes water from a source of water to each module through a constant flow valve. A distribution unit at each media module includes a spray bar for spraying water through a plurality of uniformly space... | 11/07/2006 |
| 7121296 | Variable orifice valve for air stream containing particulate coal A variable orifice valve for balancing the flow of particulate coal in an air stream relative to other parallel conduits. The valve comprises a section of conduit which changes in area along its flow axis and a variable position valve element mounted within the cond... | 10/17/2006 |
| 7105096 | Collection of sludge from the floor of a basin with multiple balanced-flow headers A method meets needs in material collection by significantly increasing the flow rate through headers that collect sludge without causing problems in priming. Telescopic pipes stay in a line adjacent to the bottom of a basin and do not float upwardly into or against... | 09/12/2006 |
| 7077290 | Beverage forming and dispensing system A beverage dispensing system includes separate valves for controlling the flow rate of a diluent and a concentrate. Various concentrates of different viscosities can be used and the selected concentrate is identified. The flow rate of the concentrate is determined b... | 07/18/2006 |
| 7069137 | Valve flow metering control system and method A turbine valve control system is provided. The turbine valve control system includes a variable flow metering device, a first sensor, a second sensor, a third sensor, a fourth sensor, memory, and processing circuitry. The variable flow metering device is capable of... | 06/27/2006 |
| 7055546 | Fluid intake pressure regulating system 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. ... | 06/06/2006 |
| 7052208 | Discharge control system for a reservoir A discharge control system for a reservoir having a pressure-communicating valve in a valve chamber with the inlet of the pressure-communicating valve connected the reservoir outlet aperture and the outlet of the pressure-communicating valve connected to a discharge... | 05/30/2006 |
| 7051757 | Flow system with high resolution proportional valve with customizable performance A flow system includes a proportional valve constructed of chemically inert materials (PTFE) to produce variable fluid flow rates of liquids including inert, and high purity, and even highly corrosive liquids. Gases of many varieties can also be flow controlled. The... | 05/30/2006 |
| 7025323 | Low power integrated pumping and valving arrays for microfluidic systems Low power integrated pumping and valving arrays which provide a revolutionary approach for performing pumping and valving approach for performing pumping and valving operations in microfabricated fluidic systems for applications such as medical diagnostic microchips... | 04/11/2006 |
| 7005073 | Residual wastewater chlorine concentration control using a dynamic weir An automated reactor-based system for treating water includes a reactor having an inlet to provide water at an inlet flow rate into the reactor, structure for adding at least one treatment chemical to the water and structure for dynamically adjusting an output flow ... | 02/28/2006 |
| 6968868 | Fueling system vapor recovery and containment performance monitor and method of operation thereof A method and apparatus for monitoring and determining fuel vapor recovery performance. The dispensing of liquid fuel into a tank by a gas pump nozzle displaces a mixture of air and fuel ullage vapor in the tank. These displaced vapors may be recovered at the dispens... | 11/29/2005 |
| 6964283 | Fueling system vapor recovery and containment performance monitor and method of operation thereof A method and apparatus for monitoring and determining fuel vapor recovery performance is disclosed. The dispensing of liquid fuel into a tank by a conventional gas pump nozzle naturally displaces a mixture of air and fuel ullage vapor in the tank. These displaced va... | 11/15/2005 |
| 6904815 | Configurable multi-point sampling method and system for representative gas composition measurements in a stratified gas flow stream A method and system of obtaining a sample of fluid flowing through a duct comprises determining an average concentration of a component species of the fluid during a test including determining first and second concentrations of the component species at first and sec... | 06/14/2005 |
| 6901786 | Fueling system vapor recovery and containment leak detection system and method A method and apparatus for monitoring a fuel vapor recovery system to determine if a leak condition exists in either the vapor return passage in a fuel dispenser or a common vapor return pipe. An air-flow sensor (AFS) may be located in the common vapor return pipe f... | 06/07/2005 |
| 6889700 | Method and apparatus for fluid flow control Methods and apparatus are provided for modulating a flow of fluid in a duct using a rotating member that rotates in the duct. A sensing unit senses the rotation speed of the rotating member and generates a rotation signal as a function of the sensed rotation speed. ... | 05/10/2005 |
| 6871666 | Bi-directional dual chamber orifice fitting Methods and apparatus for a bi-directional dual chamber orifice fitting comprising a body with a chamber in fluid communication with a flow bore. The fitting also comprises an orifice supported by an orifice plate carrier that is selectably disposable in the bore. I... | 03/29/2005 |
| 6701223 | Method and apparatus for determining optimal control settings of a pipeline Pipelines are controlled by specifying operations along them. Control specifies sequential control values defining operations at each station to control the pipeline state. The time-dependent state is determinable by software calculations using continuous... | 03/02/2004 |
| 6581625 | Liquid supply system, method for cleaning the same and vaporizer The liquid supply system comprises a pump for delivering a liquid under high pressure and a vaporizer for vaporizing the liquid delivered from the pump. The liquid vaporized in the vaporizer is supplied to a reaction chamber. A pressure gage is provided i... | 06/24/2003 |
| 6505134 | Method of calibrating a single meter blending fuel dispensing system A single meter blending fuel dispensing system utilizing a pair of proportional flow control valves each having a pressure transducer positioned aft of the valve flow control mechanism. A computer controller is used to program a desired fuel mixture by va... | 01/07/2003 |
