System Comprising Plural Fluidic Devices Or Stages Patents (Class 137/814)
  • Publication number: 20150064595
    Abstract: A fluid tube includes: a first fluid tube; a second fluid tube connected to the first fluid tube; and a flow velocity equalizer in the second fluid tube, where the flow velocity equalizer increases a uniformity of fluid flow passed therethrough, the second fluid tube is wider than the first fluid tube, and the flow velocity equalizer includes a diverging tube and a converging tube. The fluid tube may further include a fluid divider between the flow velocity equalizer and the first fluid tube. The diverging tube of the flow velocity equalizer may have a width increasing in a fluid flow direction, and the converging tube of the flow velocity equalizer may include a plurality of converging tubes having widths decreasing in the fluid flow direction.
    Type: Application
    Filed: August 18, 2014
    Publication date: March 5, 2015
    Inventors: Jin-ho KIM, Tae-won SONG, Ji-rae KIM, Jeong-sik KO
  • Publication number: 20150053289
    Abstract: A structural component for a vehicle has a surface with a riblet structure. The riblet structure includes a plurality of grooves, including a first groove having a first longitudinal section forming a first angle with a main longitudinal direction of the structural component. The first angle is larger than 0° and the main longitudinal direction corresponds to a flow direction of a fluid along the surface of the structural component.
    Type: Application
    Filed: August 21, 2014
    Publication date: February 26, 2015
    Inventors: Ante KURTOVIC, Blanka LENCZOWSKI, Juergen STEINWANDEL
  • Publication number: 20140338753
    Abstract: The present invention generally relates to systems and techniques for manipulating fluids and/or making droplets. In certain aspects, the present invention generally relates to droplet production. The droplets may be formed from fluids from different sources. In one set of embodiments, the present invention is directed to a microfluidic device comprising a plurality of droplet-making units, and/or other fluidic units, which may be substantially identical in some cases. Substantially each of the fluidic units may be in fluidic communication with a different source of a first fluid and a common source of a second fluid, in certain embodiments. In one aspect, substantially the same pressure may be applied to substantially all of the different sources of fluid, which may be used to cause fluid to move from the different sources into the microfluidic device. In some cases, the fluids may interact within the fluidic units, e.g., by reacting, or for the production of droplets within the microfluidic device.
    Type: Application
    Filed: September 27, 2012
    Publication date: November 20, 2014
    Inventors: Ralph Alexander Sperling, Adam R. Abate, David A. Weitz
  • Patent number: 8813788
    Abstract: A fluid drainage system configured for draining a basin impounding fluid and sediment, solids or the like of varying density and turbidity. The system includes a first conduit and a second conduit within or adjacent to the first conduit to form a fluid receiving chamber between the first and second conduits, each conduit having apertures therethrough, with the apertures of the first and second conduits being sized and arranged relative to one another and so configured as to preferentially discharge fluid from the top of a basin, thus providing flow conditions which inhibit the entry of sediment into the system so as to maximize the retention of sediment within the basin and reduce turbidity and Total Suspended Sediment in the discharged fluid.
    Type: Grant
    Filed: August 27, 2013
    Date of Patent: August 26, 2014
    Assignee: University of Tennessee Research Foundation
    Inventors: John Tyner, Daniel C. Yoder, Brent S. Pilon
  • Patent number: 8733401
    Abstract: A method of manufacturing a fluidic oscillator insert for use in a subterranean well can include forming the insert with a conical housing engagement surface thereon, and forming at least one fluidic oscillator on a substantially planar surface of the insert. A well tool can include a housing assembly, at least one insert received in the housing assembly, the insert having a fluidic oscillator formed on a first surface thereof, the insert being at least partially secured in the housing assembly by engagement of conical second and third surfaces formed on the insert and housing assembly, and a cover which closes off the first surface on the insert. An insert for use in a well tool can include a conical housing engagement surface, and at least one fluidic oscillator formed on a substantially planar surface. The fluidic oscillator produces oscillations in response to fluid flow through the fluidic oscillator.
    Type: Grant
    Filed: December 31, 2010
    Date of Patent: May 27, 2014
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Roger L. Schultz, Robert Pipkin
  • Patent number: 8657017
    Abstract: Apparatus and methods for controlling the flow of fluid, such as formation fluid, through an oilfield tubular positioned in a wellbore extending through a subterranean formation. Fluid flow is autonomously controlled in response to change in a fluid flow characteristic, such as density or viscosity. In one embodiment, a fluid diverter is movable between an open and closed position in response to fluid density change and operable to restrict fluid flow through a valve assembly inlet. The diverter can be pivotable, rotatable or otherwise movable in response to the fluid density change. In one embodiment, the diverter is operable to control a fluid flow ratio through two valve inlets. The fluid flow ratio is used to operate a valve member to restrict fluid flow through the valve.
    Type: Grant
    Filed: May 29, 2012
    Date of Patent: February 25, 2014
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Jason D Dykstra, Michael Linley Fripp, Orlando DeJesus, John C. Gano, Luke Holderman
  • Patent number: 8444934
    Abstract: A microfluidic flow cell for removably interfacing with a removable-member for performing a reaction therebetween. The microfluidic flow cell device comprises at least one reaction portion defining with the removable-member a reaction chamber when in an interfaced position thereof. The microfluidic flow cell comprises at least one fluid-receiving portion for receiving a fluid therein and being in fluid communication with the reaction chamber. When the microfluidic flow cell and the removable-member are in the interfaced position, the cell is adapted to allow for the fluid in the fluid-receiving portion to flow to the reaction chamber. Devices, systems and methods comprising this microfluidic flow cell are also disclosed.
    Type: Grant
    Filed: March 29, 2005
    Date of Patent: May 21, 2013
    Assignee: Universite Laval
    Inventor: Regis Peytavi
  • Patent number: 8418725
    Abstract: A well tool can comprise a fluid input, a fluid output and a fluidic oscillator which produces oscillations in a fluid which flows from the input to the output. The fluidic oscillator can include a vortex chamber with inlets, whereby fluid enters the vortex chamber alternately via the inlets, the inlets being configured so that the fluid enters the vortex chamber in different directions via the respective inlets, and a fluid switch which directs the fluid alternately toward different flow paths in response to pressure differentials between feedback fluid paths. The feedback fluid paths may be connected to the vortex chamber. The flow paths may cross each other between the fluid switch and the outlet.
    Type: Grant
    Filed: December 31, 2010
    Date of Patent: April 16, 2013
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Roger L. Schultz, Robert Pipkin, Travis Cavender
  • Publication number: 20120222747
    Abstract: The present invention relates to microfluidic systems and methods for controlling the flow of fluid using passive components engineered into the microchannels. These passive flow components include fluidic diodes, fluidic capacitors, and fluidic inductors. Various fluidic circuits are provided to control fluid flow including fluid rectifiers, fluid band pass filters, and fluid timers.
    Type: Application
    Filed: May 17, 2012
    Publication date: September 6, 2012
    Applicant: University of Virginia Patent Foundation
    Inventors: Christopher J. Easley, James M. Karlinsey, James P. Landers, Dan Leslie, Matthew R. Begley
  • Patent number: 8205812
    Abstract: An improved fluidic device that operates on a pressurized liquid flowing through it at a specified flow rate to generate an oscillating spray of liquid droplets having desired properties (e.g.
    Type: Grant
    Filed: November 23, 2009
    Date of Patent: June 26, 2012
    Assignee: Bowles Fluidics Corporation
    Inventors: Russell D. Hester, Keith Berning
  • Patent number: 8147562
    Abstract: The present invention relates to methods for the design and fabrication of biological constructs, such as organ simulants or organ replacements, which contain complex microfluidic architecture. Designs of the present invention provide increased space in the lateral dimension, enabling a large number of small channels for small vessels.
    Type: Grant
    Filed: September 23, 2003
    Date of Patent: April 3, 2012
    Assignee: The General Hospital Corporation
    Inventors: Joseph P. Vacanti, Jeffrey Borenstein, Mohammad R. Kaazempur-Mofrad, Eli Weinberg
  • Patent number: 8057724
    Abstract: A disposable microsensor is designed, fabricated and tested for standard BOD (Biochemical Oxygen Demand) measurements. A transparent Cyclic Olefin Copolymer (COC) substrate is used for sensor fabrication. Standard lithographic procedures in addition to techniques like screen printing and electroplating are used to fabricate the sensor. A microbial strain of Trichosporon Cutaneum is immobilized over one pair of sensor electrodes while the other is used as a reference. Depending on the respiratory activities of the microbial strain in different samples, the BOD values of the samples can be measured in terms of difference between the output signals. The sensor layer is attached to an injection-molded passive microfluidic channel on the top. Advantages of the BOD microsensor include, but are not limited to, fast BOD measurement, disposability because of its low cost, chemically inert polymer substrate, flow-through sample injection scheme and integration of on-chip optics.
    Type: Grant
    Filed: January 6, 2010
    Date of Patent: November 15, 2011
    Assignee: University of Central Florida Research Foundation, Inc.
    Inventors: Hyoung Jin Cho, Shekhar Halakatti, Anjum Mehta
  • Patent number: 8003062
    Abstract: A microchannel has a substrate body; a separation channel which is formed within the substrate; at least two (first and second) connection ports which are formed at one end of the separation channel close to the thickness direction perpendicular to the longitudinal direction of the substrate body; and first and second branch channels connected respectively to the first and second connection ports. When the substrate body is perpendicular to gravity, a blood sample containing blood cells and plasma, flows from one end of the separation channel. Before the blood sample gets to the other end of the separation channel, the blood cells in the blood sample settle out. The blood cells having settled out are then separated into the branch channel.
    Type: Grant
    Filed: May 22, 2007
    Date of Patent: August 23, 2011
    Assignee: Kyoto University
    Inventors: Hidetoshi Kotera, Masao Washizu, Hidehiro Oana
  • Patent number: 7858047
    Abstract: A fluidic device is provided for sealing a proper amount of fluid with a brittle material. By moving an adsorbate through an external adsorption force, the brittle material for pre-sealing is broken, and the fluid flows out to interact with the external environment to generate a pump reaction. In addition, the invention may also be used for storing a liquid reagent in a device for a long time. Thereby, the fluidic device can be made small and portable.
    Type: Grant
    Filed: September 1, 2008
    Date of Patent: December 28, 2010
    Assignee: Industrial Technology Research Institute
    Inventors: Kuo-Yao Weng, Chien-An Chen, Cheng-Yu Ko, Chih-Hsien Su, Nien-Jen Chou, Chih-Wen Yang
  • Publication number: 20100229955
    Abstract: There is disclosed apparatus and processes for increasing fluidity of a flowing fluid. The apparatus may have a number of treatment chambers adapted to receive and pass the flowing fluid. In each treatment chamber a field is applied to the fluid. The fields may be parallel to the fluid's direction of flow, and may alternate in sequence. The fluidity of the fluid is increased through exposure to the fields.
    Type: Application
    Filed: March 13, 2009
    Publication date: September 16, 2010
    Inventor: Douglas Bell
  • Patent number: 7781548
    Abstract: A microchannel polymerization reactor comprising: (a) a first microchannel adapted to carry a reactant stream; (b) a fluid conduit adapted to carry a fluid in thermal communication with the first microchannel; and (c) a static mixer in fluid communication with the first microchannel adapted to provide a mixing zone operative to change the cross-sectional fluid flow profile at a predetermined point along the first microchannel without changing the primary direction of the reactant stream through the first microchannel.
    Type: Grant
    Filed: October 21, 2008
    Date of Patent: August 24, 2010
    Assignee: Velocys, Inc.
    Inventors: Sean P. Fitzgerald, David J. Hesse, Anna Lee Y. Tonkovich, Laura J. Silva
  • Publication number: 20100123031
    Abstract: A fuel injection system includes a fuel injector that includes a nozzle assembly and at least one passageway that includes at least one fluid oscillator. The at least one passageway extends from a nozzle orifice, positioned on the outside of the fuel injector, to inside the fuel injector. Fuel from inside the fuel injector moves through the at least one fluid oscillator and oscillates between a high injection rate and a low injection rate as it moves through the at least one nozzle orifice and into the combustion chamber.
    Type: Application
    Filed: November 17, 2008
    Publication date: May 20, 2010
    Inventor: James R. Weber
  • Patent number: 7666285
    Abstract: A disposable microsensor is designed, fabricated and tested for standard BOD (Biochemical Oxygen Demand) measurements. A transparent Cyclic Olefin Copolymer (COC) substrate is used for sensor fabrication. Standard lithographic procedures in addition to techniques like screen printing and electroplating are used to fabricate the sensor. A microbial strain of Trichosporon Cutaneum is immobilized over one pair of sensor electrodes while the other is used as a reference. Depending on the respiratory activities of the microbial strain in different samples, the BOD values of the samples can be measured in terms of difference between the output signals. The sensor layer is attached to an injection-molded passive microfluidic channel on the top. Advantages of the BOD microsensor include, but are not limited to, fast BOD measurement, disposability because of its low cost, chemically inert polymer substrate, flow-through sample injection scheme and integration of on-chip optics.
    Type: Grant
    Filed: April 14, 2005
    Date of Patent: February 23, 2010
    Assignee: University of Central Florida Research Foundation, Inc.
    Inventors: Hyoung Jin Cho, Shekhar Halakatti, Anjum Mehta
  • Patent number: 7638025
    Abstract: When a first liquid fed into a first flow passage 6 moves therein toward a connecting portion 10 due to capillarity, gas in the first flow passage 6 is pushed by the moving first liquid to be exhausted to the external environment via a third flow passage 14 and an external environment communication passage 8, so that the first liquid moves to the end of a fifth flow passage 16, which is formed in the connecting portion 10, on the side of a second flow passage 7 due to capillarity. Then, when a second liquid fed into the second flow passage 7 moves therein toward the connecting portion 10 due to capillarity, gas in the second flow passage 7 is pushed by the moving second liquid to be exhausted to the external environment via a fourth flow passage 15 and the external environment communication passage 8, so that a liquid-liquid interface level between the first and second liquids is formed in the connecting portion 10.
    Type: Grant
    Filed: June 19, 2006
    Date of Patent: December 29, 2009
    Assignee: Enplas Corporation
    Inventor: Koichi Ono
  • Publication number: 20090314366
    Abstract: A fluidic device is provided for sealing a proper amount of fluid with a brittle material. By moving an adsorbate through an external adsorption force, the brittle material for pre-sealing is broken, and the fluid flows out to interact with the external environment to generate a pump reaction. In addition, the invention may also be used for storing a liquid reagent in a device for a long time. Thereby, the fluidic device can be made small and portable.
    Type: Application
    Filed: September 1, 2008
    Publication date: December 24, 2009
    Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Kuo-Yao Weng, Chien-An Chen, Cheng-Yu Ko, Chih-Hsien Su, Nien-Jen Chou, Chih-Wen Yang
  • Publication number: 20090314367
    Abstract: A microfluidic system comprising an integrated circuit having a bonding surface bonded to a polymeric microfluidics platform. The microfluidic system comprises one or more microfluidics devices controlled by control circuitry in the integrated circuit. At least one of the microfluidic devices comprises a MEMS actuator positioned in a MEMS layer of the integrated circuit. The MEMS layer is covered with a polymeric layer which defines the bonding surface of the integrated circuit.
    Type: Application
    Filed: June 20, 2008
    Publication date: December 24, 2009
    Inventors: Gregory John McAvoy, Emma Rose Kerr, Kia Silverbrook
  • Publication number: 20090246086
    Abstract: A microfluidic network comprising a plurality of droplet emitters forming droplets of a first fluid in a second fluid immiscible in the first fluid to produce an outlet stream of droplets, wherein each of the emitters are in fluid communication with each other via the network and all have an auto-synchronised droplet formation frequency by hydrodynamic interaction between the emitters is provided. The synchronisation gives a surprisingly narrow droplet size distribution for the network.
    Type: Application
    Filed: October 2, 2006
    Publication date: October 1, 2009
    Inventors: Valessa Barbier, Fabien Frederic Raymond Marie Jousse, Patrick Jean Rene Tabeling, Herve Willaime
  • Publication number: 20090242060
    Abstract: A fluid transportation device includes a flow-gathering module and multiple double-chamber actuating structures. The flow-gathering module includes two surfaces opposed to each other, multiple first flow paths and multiple second flow paths running through the two surfaces, an inlet channel arranged between the two surfaces and communicated with the multiple first flow paths, and an outlet channel arranged between the two surfaces and communicated with the multiple second flow paths. The multiple double-chamber actuating structures are arranged on the flow-gathering module side by side. Each double-chamber actuating structure includes a first chamber and a second chamber symmetrically arranged on the two surface of the flow-gathering module. Each of the first chamber and the second chamber includes a valve cap arranged over the flow-gathering module, a valve membrane arranged between the flow-gathering module and the valve cap, and an actuating member having a periphery fixed on the valve cap.
    Type: Application
    Filed: March 27, 2009
    Publication date: October 1, 2009
    Applicant: Microjet Technology Co., Ltd.
    Inventors: Shih Chang Chen, Ying Lun Chang, Rong Ho Yu, Shih Che Chiu, Tsung Pat Chou
  • Patent number: 7569127
    Abstract: A one-piece, microfluidic package with standardized multiple ports allows devices to be connected in series without resorting to extra tubing connections or bonding processes. The one-piece construction consists of microfluidic channels that can be connected to fluid reservoirs and other fluidic components fabricated with interconnecting and interlocking ports. The size of the friction-fit interlocking ports is designed such that the smaller male port fits snugly into the larger female port in a manner that is leak-free and adhesive-free. The friction-fit ports can also be reconfigured. Thus, the interconnection of microfluidic packages can be in an extended series including connections to sensors and devices such as a bio/biochemical/chemical sensor chip, a dielectrophoretic manipulator chip, and a microfluidic reactor chip.
    Type: Grant
    Filed: January 27, 2005
    Date of Patent: August 4, 2009
    Assignee: University of Central Florida Research Foundation, Inc.
    Inventor: Hyoung Jin Cho
  • Publication number: 20090188794
    Abstract: A fluidic device includes a porous substrate, a wetting region extending through a first portion of the porous substrate from a first side of the substrate, in which the wetting region is permeable to fluid transport, and a non-wetting region extending through a second portion of the porous substrate from a second side of the substrate, in which the non-wetting region is operable to switch between a first state impermeable to fluid transport and a second state permeable to fluid transport.
    Type: Application
    Filed: January 25, 2008
    Publication date: July 30, 2009
    Inventors: Steve Simon, Victor A. Lifton
  • Publication number: 20090056822
    Abstract: Plastic microfluidic structures having a substantially rigid diaphragm that actuates between a relaxed state wherein the diaphragm sits against the surface of a substrate and an actuated state wherein the diaphragm is moved away from the substrate. As will be seen from the following description, the microfluidic structures formed with this diaphragm provide easy to manufacture and robust systems, as well readily made components such as valves and pumps.
    Type: Application
    Filed: October 9, 2008
    Publication date: March 5, 2009
    Applicant: Kionix, Inc.
    Inventors: Lincoln C. Young, Peng Zhou
  • Publication number: 20090038699
    Abstract: A microdevice for multistage-mixing of process fluids which has plurality of freely-detachable units connected to each other without using pipes, wherein a microchannel for flow of the process fluids and a channel for flow of a heat-exchange medium are formed in the microdevice by mutual connection of a plurality of the units and the microdevice is locally and independently temperature-controllable.
    Type: Application
    Filed: August 4, 2008
    Publication date: February 12, 2009
    Applicant: FUJIFILM Corporation
    Inventors: Youichi NAGAI, Kazuhiro MAE, Nobuaki AOKI
  • Publication number: 20080210017
    Abstract: Provided are an orifice member, and a differential-pressure flow meter and a flow-regulating device using the orifice member, that allow purging to be carried out easily when changing the fluid to be circulated, that are less likely to cause contamination and leaching of impurities to the circulated fluid, and that can be easily produced. The flow-regulating device includes a first pressure-measuring device (object to be connected to) that is connected to one end of the orifice member, and a second pressure-measuring device (object to be connected to) that is connected to the other end of the orifice member, and a flow-regulating valve that is connected to the downstream side of the differential-pressure flow meter, which includes the above-mentioned units.
    Type: Application
    Filed: May 29, 2006
    Publication date: September 4, 2008
    Inventors: Hiroki Igarashi, Yoshihiro Ushigusa, Masahiro Hasunuma
  • Publication number: 20080105315
    Abstract: Low pressure off gases such as from dry gas seals may be recompressed to a higher pressure using multiple tandem supersonic ejectors in which upstream ejectors operate at a higher nozzle exit Mach number than down stream ejectors and all ejectors are operated at exit Mach numbers greater than 1.
    Type: Application
    Filed: May 31, 2007
    Publication date: May 8, 2008
    Inventors: Kamal K. Botros, John Geerligs, Hasan Imran
  • Publication number: 20080047608
    Abstract: A fluidic device includes a first reservoir to receive a first fluid, a second reservoir to receive a second fluid, and a main channel coupled to the first and second reservoirs through one or more branch channels. A first one-use pump generates a pressure difference to move one or both of the first and second fluids when a container in the first one-use pump is broken. A second one-use pump generates a pressure difference to move one or both of the first and second fluids when a container in the second one-use pump is broken.
    Type: Application
    Filed: December 19, 2006
    Publication date: February 28, 2008
    Applicant: Industrial Technology Research Institute
    Inventor: Kuo-Yao Weng
  • Patent number: 7128082
    Abstract: A system for control of a fluid flow. The system includes an array of fluidic oscillators. Each fluidic oscillator carries an oscillating flow of the fluid and includes a throat, an input port connected to the throat, two control ports connected to the throat and two output ports extending from the throat. A feedback line is connected to each of the two output ports and each of the two control ports. The system further includes a plenum connected to the input ports of the fluidic oscillators to supply the fluid to the fluidic oscillators and a feedback chamber disposed along each feedback line of each fluidic oscillator to provide a feedback path for the control fluid to cause oscillatory fluid motion between the first output port and the second output port, the frequency of which may be modulated by adjusting the volume of the feedback chamber.
    Type: Grant
    Filed: August 10, 2005
    Date of Patent: October 31, 2006
    Assignee: General Electric Company
    Inventors: Ciro Cerretelli, Kevin Richard Kirtley
  • Patent number: 7059351
    Abstract: A liquid transportation device includes a working board, a working liquid, a liquid channel and a cover board, wherein the liquid channel is formed on a top surface of the working board, the covering board is fully covered the liquid channel, the liquid channel composed of a material substantially tending to the liquid, and the covering board is composed of a material substantially phobic to the liquid. The working liquid flows within the liquid channel in guidance of the deviation of surface tension between the liquid channel to the working liquid, and the covering board to the working liquid, so that the working liquid is transported within the liquid channel without any external power.
    Type: Grant
    Filed: December 5, 2005
    Date of Patent: June 13, 2006
    Assignee: National Taiwan University
    Inventors: Chin-Chou Chu, Chien-Fu Chen, Chun-Fei Kung, Chien-Cheng Chang, Fan-Gang Tseng
  • Patent number: 6932114
    Abstract: A fluid delivery system capable of delivering a precise amount of fluid and monitor certain properties of the fluid so that the correct fluid is safely delivered to its intended destination. The system makes use of a flow sensor comprising a freestanding tube portion vibrated at a resonant frequency, wherein the resonant frequency corresponds to the density of the fluid flowing through the tube portion and the tube portion exhibits a degree of twist that varies with the mass flow rate of the fluid flowing therethrough. Movement of the tube portion is then sensed to produce a first output signal corresponding to the fluid density and a second output signal corresponding to the mass flow rate. The system is also equipped to measure elapsed time and to stop fluid flow in response to either of the first and second output signals.
    Type: Grant
    Filed: February 24, 2003
    Date of Patent: August 23, 2005
    Assignee: Integrated Sensing Systems, Inc.
    Inventor: Douglas Ray Sparks
  • Patent number: 6840280
    Abstract: These and other objects of the present invention are achieved by provision of a flow through ultrasonic system for facilitating the flow of flow-resistant materials. The system includes a supply of material and an ultrasonic horn having at least one passage extending therethrough. An isolating tube which is compatible with the material is provided passing through the at least one passage in the ultrasonic horn, the isolating tube in communication the supply of material and completely isolating the ultrasonic horn from the material. A converter imparts ultrasonic energy to the ultrasonic horn, and in turn to the isolating tube so as to inhibit the material from attaching to and clogging the isolating tube.
    Type: Grant
    Filed: April 30, 2003
    Date of Patent: January 11, 2005
    Assignee: Sonics & Materials Inc.
    Inventor: William P. Simon
  • Patent number: 6798859
    Abstract: A branch amplifier card for a nuclear reactor control rod drive control system is provided. The control system includes a control processor, a plurality of transponder cards arranged in clusters with each cluster under the control of a branch amplifier card. The branch amplifier card is configured to receive commands from the control processor, send the converted commands to transponder cards under the control of the branch amplifier card and to a downstream branch amplifier card, receive an acknowledge word from transponder cards under the control of the branch amplifier card, add AC voltage threshold level information about the transponder cards under the control of the branch amplifier card to the acknowledge word, permit transponder trouble information attached to the acknowledge word to remain in the acknowledge word, and resend the acknowledge word including the transponder trouble information to an upstream branch amplifier card.
    Type: Grant
    Filed: August 18, 2003
    Date of Patent: September 28, 2004
    Assignee: General Electric Company
    Inventors: William Michael Steiner, Craig Miles Smith, Leonid Boris Sheikman, Craig Ernest Leighty
  • Publication number: 20030159741
    Abstract: A fluid delivery system capable of delivering a precise amount of fluid and monitor certain properties of the fluid so that the correct fluid is safely delivered to its intended destination. The system makes use of a flow sensor comprising a freestanding tube portion vibrated at a resonant frequency, wherein the resonant frequency corresponds to the density of the fluid flowing through the tube portion and the tube portion exhibits a degree of twist that varies with the mass flow rate of the fluid flowing therethrough. Movement of the tube portion is then sensed to produce a first output signal corresponding to the fluid density and a second output signal corresponding to the mass flow rate. The system is also equipped to measure elapsed time and to stop fluid flow in response to either of the first and second output signals.
    Type: Application
    Filed: February 24, 2003
    Publication date: August 28, 2003
    Inventor: Douglas Ray Sparks
  • Publication number: 20020185183
    Abstract: Microfluidic devices having a plurality of functional features for performing one or more fluidic operations in parallel are provided. Reagents, samples or other fluids common to multiple functional features (“common fluids”) may be input into a microfluidic device or system through one or more distributing inputs that divide and distribute the common fluids as desired. The use of a multi-layer fabrication technique allows multiple distributing inputs to distribute to multiple functional features in a microfluidic device without undesirable fluid channel intersections.
    Type: Application
    Filed: May 30, 2002
    Publication date: December 12, 2002
    Applicant: Nanostream, Inc.
    Inventors: Stephen D. O'Connor, Christoph D. Karp, Eugene Dantsker
  • Patent number: 6397877
    Abstract: A blowdown manifold for a nuclear power plant includes a main conduit section, at least one coolant exhaust conduit, and at least one fluidic device. The main conduit section is connected to a pressure relief system in the nuclear power plant. The coolant exhaust conduit has a first end coupled to the main conduit section and a second end extending into a receptacle. The fluidic device is in fluid communication with the main conduit and exhibits a lower flow resistance to air than to water and steam.
    Type: Grant
    Filed: April 14, 2000
    Date of Patent: June 4, 2002
    Assignee: Westinghouse Electric Company LLC
    Inventors: Clifford B. Martin, Daniel A. Peck
  • Patent number: 6319214
    Abstract: A valve-less fluid control circuit for controlling rhythmic action devices, such as circulatory assist devices. The fluid control circuit has a plurality of pressure sensitive fluid oscillators for circulating a fluid. Each fluid oscillator includes a capacitance chamber unit for peristaltic pumping of fluid after being filled via an input conduit and a resistance conduit. A first control conduit provides an outlet of fluid from the capacitance unit during peristaltic pumping, and when the pressure of the fluid in the first control conduit reaches a certain level relative to the pressure of fluid in the input conduit, the fluid is directed through an interactive region and exits the first fluid oscillator through an exhaust conduit.
    Type: Grant
    Filed: September 1, 2000
    Date of Patent: November 20, 2001
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Donald E. Wortman, John D. Bruno
  • Patent number: 5876187
    Abstract: Micropumps fabricated by micromachining techniques and employing fixed or no-moving-parts valves. As one aspect of the invention, a laser-assisted chemical etching technique is employed for providing smooth-walled, curved configuration necessary to obtain the desired flow characteristics of the valves that are used in conjunction with the micropump.
    Type: Grant
    Filed: March 9, 1995
    Date of Patent: March 2, 1999
    Assignee: University of Washington
    Inventors: Fred K. Forster, Ronald L. Bardell, Alan P. Blanchard, Martin A. Afromowitz, Nigel R. Sharma
  • Patent number: 5697402
    Abstract: A system for mixing first and second polymer melt flows and directing a mixed polymer melt flow to one and another downstream locations includes a control valve having an inlet port for receiving the first polymer melt flow, and a pair of outlet ports, and a fluidic valve for forming the mixed flow of the first and second polymer melt flows and directing the mixed flow to one of a plurality of downstream locations. The fluidic valve is provided with a primary supply port for receiving the second polymer melt flow, a pair of secondary supply ports which are fluid-connected with the primary supply port at a mixing intersection, and a plurality of discharge ports extending from the mixing intersection. Each discharge port directs the mixed flow of the first and second polymer melt flows to a respective downstream location. A pair of branch conduits is provided which fluid-connect one of the pair of outlet ports of the control valve to a respective one of the secondary supply ports of the fluidic valve.
    Type: Grant
    Filed: March 29, 1996
    Date of Patent: December 16, 1997
    Assignee: BASF Corporation
    Inventors: John A. Hodan, Matthew B. Hoyt, Otto M. Ilg
  • Patent number: 5485935
    Abstract: A method and apparatus are disclosed for capturing coating debris during laser ablation of a photoreceptor comprising: (a) enclosing a predetermined length of a coated substrate in a housing to result in an enclosed coated substrate portion, wherein there exists a gap between the enclosed substrate portion and the housing in communication with air outside the housing; (b) directing high energy radiation at the coating of the enclosed substrate portion; (c) directing a first fluid stream against the coating of the enclosed substrate portion to remove at least part of the coating in the form of coating debris during or subsequent to (b), whereby the first fluid stream may move a portion of the coating debris outside the housing in the absence of (d); (d) directing a second fluid stream against the first fluid stream in a direction effective for keeping the coating debris inside the housing, thereby minimizing movement of the coating debris into the air outside the housing; and (e) exhausting the coating debris.
    Type: Grant
    Filed: April 1, 1994
    Date of Patent: January 23, 1996
    Assignee: Xerox Corporation
    Inventors: Robert S. Foltz, Ronald A. Gaither
  • Patent number: 5460284
    Abstract: A method and apparatus are disclosed for capturing coating debris during laser ablation of a photoreceptor comprising: (a) enclosing a predetermined length of a coated substrate in a housing to result in an enclosed coated substrate portion, wherein there exists a gap between the enclosed substrate portion and the housing in communication with air outside the housing; (b) directing high energy radiation at the coating of the enclosed substrate portion; (c) directing a first fluid stream against the coating of the enclosed substrate portion to remove at least part of the coating in the form of coating debris during or subsequent to (b), whereby the first fluid stream may move a portion of the coating debris outside the housing in the absence of (d); (d) directing an annularly-shaped second fluid stream against the first fluid stream in a direction effective for keeping the coating debris inside the housing, thereby minimizing movement of the coating debris into the air outside the housing; and (e) exhausting t
    Type: Grant
    Filed: April 1, 1994
    Date of Patent: October 24, 1995
    Assignee: Xerox Corporation
    Inventors: Robert S. Foltz, Ronald A. Gaither, Richard C. Petralia
  • Patent number: 5265636
    Abstract: A single-stage and multiple-stage fluidic rectifier wherein each stage has a trunk channel and a reversing channel that joins the trunk channel at a downstream position of the trunk channel, downstream with respect to fluid flowing in a reverse direction through the fluidic rectifier. A first vena contracta is formed upon entry of the fluid into the body, when the fluid is flowing in the reverse direction. Further vena contractas are formed within the trunk channel of each corresponding stage, preferably by flow through the reversing channel being discharged and impinged upon flow through the trunk channel. Such discharged flow from the reversing channel contracts the flow through the trunk channel at a particular area. When fluid flows through the fluidic rectifier in a forward direction, each vena contracta is disabled. Thus in the forward direction, the overall head loss of the fluidic rectifier is less than the overall head loss of the fluidic rectifier when the fluid is flowing in the reverse direction.
    Type: Grant
    Filed: January 13, 1993
    Date of Patent: November 30, 1993
    Assignee: Gas Research Institute
    Inventor: Jay L. Reed
  • Patent number: 4502575
    Abstract: A shock absorber has a piston which comprises upper and lower members. The upper and lower members are fixedly assembled to define therein the vortex chamber. The piston has vertically-extending channels on the periphery thereof to define the vertical section of the vortex passages together with the inner periphery of the cylinder tube.
    Type: Grant
    Filed: July 23, 1981
    Date of Patent: March 5, 1985
    Assignee: Nissan Motor Company, Limited
    Inventors: Naoto Fukushima, Kazuroh Iwata, Kunihiko Hidaka
  • Patent number: 4494422
    Abstract: A transmission controller that includes a series of fluidic comparators receiving power signals from selected ports in a manually-actuable range selector valve. Hydraulic signals representing engine throttle position and transmission output speed are beamed against each comparator main flow stream to switch the flow between a primary collector port and alternate collector port. Comparator outputs are amplified and applied to the end faces of spool valves that provide hydraulic actuator force for the transmission clutches.
    Type: Grant
    Filed: September 16, 1982
    Date of Patent: January 22, 1985
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Maurice F. Funke, Joseph W. Morris
  • Patent number: 4467984
    Abstract: A three-axis navigational guidance system utilizes three specially designed internal jet-type fluidic angular rate sensors which simultaneously sense the rotational rate of a guided body relative to three mutually perpendicular control axes. Fluidic output signals from the sensors are converted to electrical signals which are used to maintain the body in a preselected attitude relative to each of the three axes. The sensors are rendered extremely accurate by means of unique calibration mechanisms associated therewith which compensate for or correct for fabricational inaccuracies in the sensors. The operation of the rate sensing portion of the guidance system is environmentally stabilized by a novel jet-control system which automatically maintains the Reynolds number of each sensor jet within a predetermined range to thereby substantially eliminate jet drift.
    Type: Grant
    Filed: November 12, 1980
    Date of Patent: August 28, 1984
    Assignee: The Garrett Corporation
    Inventor: Thomas B. Tippetts
  • Patent number: 4441525
    Abstract: A fluidic system for stabilizing movement of a body subject to oscillation at its natural frequency, such as a tank-mounted gun, with appropriate circuitry and controls for notch filtering control output signals at the natural frequency.
    Type: Grant
    Filed: July 24, 1980
    Date of Patent: April 10, 1984
    Assignees: The Garrett Corporation, United States Government
    Inventors: Thomas B. Tippetts, Francis M. Manion
  • Patent number: 4371753
    Abstract: A fluid-controlled switch capable of being mass produced and densely spaced, having two groups of fluid control inputs, at least two fluid outputs, and an internal movable mass is disclosed. The fluid energy necessary for switching is used economically, fluid power consumption being drastically reduced after switching is complete, even though fluid power input may continue thereafter. The movable mass, which may be a group of little masses, divides the switch into two volume complexes. Switching is caused by a pressure difference between the two complexes. The pressure difference between the two complexes is caused by sufficient flow into one but not the other group of fluid inputs. The switch may be used to switch simultaneously one or more primary signals and corresponding status signals, which may be used to determine whether all switches in a row or column or other grouping within an array of switches are reset.
    Type: Grant
    Filed: November 27, 1978
    Date of Patent: February 1, 1983
    Inventor: Ronald E. Graf
  • Patent number: 4246990
    Abstract: A remote control system for an automotive transmission in an earth-moving vehicle which includes a fluidic variable frequency oscillator having a variable feedback loop controlled by a quadrant lever which acts as a gear shift control. When the lever is moved between spaced transmission control positions, the frequency of the signal at the output is swept through the frequencies corresponding to intermediate control positions. The waveform of the output signal is non-symmetrical having a fixed "off" time and an "on" time which varies in length as an inverse function of the frequency. The output signal is fed to a fluidic transmitter, then through a pair of conduits to a fluidic receiver. The "on" output port of the receiver feeds into a manifold developing pressure therein which varies with the degree of dissymmetry of the wave, that is, inversely with frequency.
    Type: Grant
    Filed: January 2, 1979
    Date of Patent: January 27, 1981
    Assignee: Westinghouse Air Brake Company
    Inventor: Lawrence D. Strantz