Particle Size Patents (Class 73/865.5)
  • Patent number: 10288542
    Abstract: An imaging device for determining particle size distribution including a sample receptacle containing a sample and an imager capable of capturing a plurality of images of the sample in a region of observation. The imaging device further includes a radiation source provided linearly opposite to the imager and a base platform that supports the imager and the radiation source.
    Type: Grant
    Filed: February 2, 2016
    Date of Patent: May 14, 2019
    Assignee: Siemens Healthcare Diagnostics Inc.
    Inventors: Anant Kumar Mishra, Naveen Kumar Ssm
  • Patent number: 10190945
    Abstract: An emissions measurement system capable of providing an accurate, real-time estimate of particle number (PN)/particulate matter (PM) within exhaust is disclosed. The system is capable of accurately differentiating the size and composition of PM/PN by synchronizing dissimilarly configured sensors. The exhaust may be generated by an internal combustion engine, in which case the system may be sequentially connected to the exhaust from the internal combustion engine.
    Type: Grant
    Filed: September 18, 2015
    Date of Patent: January 29, 2019
    Assignee: 3DATX Corporation
    Inventors: David W. Miller, John William Hynd, Gurdas S. Sandhu, Andrew D. Burnette, Karl Ropkins
  • Patent number: 10139330
    Abstract: The invention concerns a method and system for analyzing a liquid sample containing solid matter. The method comprises fractionating the sample according to particle sizes and/or masses of the solid matter so as to produce sample fractions, and measuring at least one physical or chemical property of at least one of said sample fractions. According to the invention the sample is conducted to a disintegration channel having one or more depressions, and a liquid flow having a non-constant temporal velocity profile is applied through the disintegration channel, in order to gradually take solid matter of the sample with the liquid flow from said one or more depressions for providing said sample fractions. The invention allows for efficient fractionation of samples, which cannot be fractionated using conventional field flow fractionation, for example.
    Type: Grant
    Filed: May 24, 2013
    Date of Patent: November 27, 2018
    Assignee: KEMIRA OYJ
    Inventors: Lari Vähäsalo, Eija Saari, Iiris Joensuu, Marjatta Piironen
  • Patent number: 9810558
    Abstract: Provided are systems and methods for accurate sensing of particle concentrations in fluids by employing a particle impactor system that allows for collection, growth and analysis of biological particles. The disclosed systems and methods make use of a pressure based flow sensor which permits the particle impactor system systems to accurately and reliably provide measurements of biological particle concentrations in the ambient environment. By incorporation of pressure sensors and pressure measurements into the flow measurement techniques, embodiments provide for the ability to use a particle impactor system to accurately measure environmental biological particle concentrations at a variety of atmospheric pressure conditions, such as at high altitude or with minimal perturbation from atmospheric weather conditions, without requiring recalibration or other adjustment of the sensors and control systems.
    Type: Grant
    Filed: March 12, 2015
    Date of Patent: November 7, 2017
    Assignee: PARTICLE MEASURING SYSTEMS, INC.
    Inventors: Thomas Bates, Cliff Ketcham, Paul B. Hartigan, Ronald W. Adkins
  • Patent number: 9752975
    Abstract: Determining cleanliness of a sample by providing a continuous flow of clean air into a chamber through a HEPA filter, taking a reference reading of particle counts while the chamber is empty, introducing the sample into the chamber and taking a first reading of a particle count received from all sides of the sample in the chamber to determine loose particles in a particle size range of 0.1 microns up to 5 microns associated with the sample.
    Type: Grant
    Filed: January 10, 2016
    Date of Patent: September 5, 2017
    Assignee: PERSYS TECHNOLOGY LTD.
    Inventors: Leo Mendelovici, Gideon Drimer, Yitzhak Vanek
  • Patent number: 9746409
    Abstract: A method and apparatus for determining cleanliness of a sample is provided. The method includes taking a first reading of particles count of a sample placed into a chamber. The method further includes directing a stream of air over the sample, and taking a second reading of particles count of the sample. The method further includes calculating a difference between the first reading and the second reading, and determining a cleanliness of the sample based upon the difference. The method further includes option of taking an additional reading while a stream of ionized air is directed towards the sample. The method further includes trapping the impurities particles released from the sample by applying a vacuum through the filter, and analyzing the trapped particles to determine nature and chemical composition of the impurities particles.
    Type: Grant
    Filed: July 11, 2013
    Date of Patent: August 29, 2017
    Assignee: PERSYS TECHNOLOGY LTD.
    Inventors: Yitzhak Vanek, Leo Mendelovici, Gideon Drimer
  • Patent number: 9714853
    Abstract: A microfluidic flow rate sensor includes a droplet within a channel and a droplet movement detector that generates a signal based on the position and/or movement of the droplet within the channel. A processor determines the flow rate of a fluid through the channel based on the signal received from the droplet movement detector. In one example, the droplet movement detector is an optical detector, such as a combination of a lens and an image capturing device. In other examples, the droplet is electrically conductive, and at least a portion of the channel is conductive or includes electrical contacts. The position of the droplet within the channel is determined by observing the electrical characteristics of the channel.
    Type: Grant
    Filed: March 14, 2014
    Date of Patent: July 25, 2017
    Assignee: Alfred E. Mann Foundation For Scientific Research
    Inventors: Charles L. Byers, Chris J. Hetlinger
  • Patent number: 9715335
    Abstract: A method for assisting a user to design a photo book includes displaying layouts of a first page and a second page of the photo book at the user interface, storing a first snapshot image and a first dynamic render object in association with the first page and a second snapshot image and a second dynamic render object in association with the second page, allowing a user to select the first page for editing by at the user interface, in response to user selection of the first page, representing the first page by the first dynamic render object at the user interface, representing the second page by the second snapshot image at the user interface, and allowing the user to vary the first dynamic render object in the first page at the user interface.
    Type: Grant
    Filed: January 7, 2015
    Date of Patent: July 25, 2017
    Assignee: Shutterfly, Inc.
    Inventors: Daniel J. Norwood, Jonathan Scott Delamater, Stephen Kuenzli, Gurushyam Hariharan
  • Patent number: 9399967
    Abstract: A particle sensor arranged in an exhaust duct such that particles from the exhaust-gas flow accumulate on and/or between at least two sensor electrodes when a voltage greater than a limit voltage is applied between the two sensor electrodes and substantially no particles accumulate if the voltage is lower than the limit voltage. During a first time period, a first voltage greater than the limit voltage is applied between the sensor electrodes. During a second time period, a second voltage, lower than the limit voltage, is applied between the sensor electrodes, and/or the particle sensor is heated to a predefined temperature, such that substantially no particles accumulate on and/or between the at least two sensor electrodes. Following the second time period, a third voltage greater than the limit voltage is applied between the sensor electrodes.
    Type: Grant
    Filed: March 9, 2012
    Date of Patent: July 26, 2016
    Assignee: Continental Automotive GmbH
    Inventors: Johannes Ante, Markus Herrmann, Andreas Ott, Willibald Reitmeier, Denny Schädlich, Manfred Weigl, Andreas Wildgen
  • Patent number: 9335244
    Abstract: A system and a method of measuring a particle's size in a select aerosol using the optical diameter of the particle to perform a mobility and/or aerodynamic diameter conversion without any knowledge about the particle's shape and its optical properties in the aerosol being characterized. In one example embodiment of the invention, the method includes generating a set of calibration data and finding the optimal refractive index and shape that best fits the calibration data. In addition, the method includes creating a new calibration curve that provides a mobility-equivalent or aerodynamic-equivalent diameter.
    Type: Grant
    Filed: August 8, 2012
    Date of Patent: May 10, 2016
    Assignee: TSI INCORPORATED
    Inventor: Hee-Siew Han
  • Patent number: 9274040
    Abstract: A process for characterizing micro, meso, and/or macro porous materials is provided. The process includes providing a volumetric and/or gravimetric adsorption system, the adsorption system having an adsorption chamber and a probe gas at a first temperature. In addition, a porous material to be characterized is provided and placed within the adsorption chamber. Thereafter, a porosimetry run is conducted on the porous material. The porosimetry run includes: (a) selecting an uptake target value; (b) selecting a target interval bounding the target uptake target value; (c) adjusting pressure within the adsorption chamber in order for the porous sample to reach the target uptake value; (d) adjusting pressure within the adsorption chamber until the pressure within the adsorption chamber is within the target interval for a predetermined amount of time; and (e) repeating steps (a)-(d) until the porosimetry run is complete.
    Type: Grant
    Filed: March 10, 2014
    Date of Patent: March 1, 2016
    Assignee: The Penn State Research Foundation
    Inventors: Ali Qajar, Ramakrishnan Rajagopalan, Henry C. Foley
  • Patent number: 9216395
    Abstract: A process for charging a longitudinal section of a catalyst tube with a homogeneous fixed catalyst bed section whose active composition is at least one multielement oxide or comprises elemental silver on an oxidic support body and whose geometric shaped catalyst bodies and shaped inert bodies have a specific inhomogeneity of their longest dimensions.
    Type: Grant
    Filed: October 22, 2013
    Date of Patent: December 22, 2015
    Assignee: BASF SE
    Inventors: Martin Dieterle, Klaus Joachim Mueller-Engel
  • Patent number: 9212983
    Abstract: A particle size distribution measuring system 1 sets a reference voltage in a DMA 300 to a voltage value U, and executes the classifying of aerosol particles based on electrical mobility, in an electric field to which the voltage value U is supplied. When a predetermined condition is not satisfied, an analyzing device 600 causes a sum of the voltage value for the previous classifying (previous value) and the voltage value U to be re-set in the DMA 300 and causes the classifying of the aerosol particles to be executed again. A particle measuring device 400 defines a first measurement result as a measurement result M1, and defines a result of the re-measurement as a new measurement result Mx every time the measurement is thereafter repeated.
    Type: Grant
    Filed: September 6, 2012
    Date of Patent: December 15, 2015
    Assignee: RION CO., LTD.
    Inventor: Chiryo Tsunoda
  • Patent number: 9201972
    Abstract: A computer-implemented method involving: gathering a set of files from one or more computers; analyzing the set of files to identify a plurality of files among the set of files that contain spatial information; storing information about the plurality of files, the stored information indicating that the identified files contain spatial information; and causing to be displayed to a user an indication that the identified files contain spatial information.
    Type: Grant
    Filed: October 30, 2007
    Date of Patent: December 1, 2015
    Assignee: Nokia Technologies Oy
    Inventors: John R. Frank, Erik M. Rauch, Ursula Rauch, Manfred Rauch
  • Patent number: 9162072
    Abstract: An implantable medical device with lubricious material permits implantable medical devices to have a reduced friction between the device and at least a portion of the surrounding tissue. The implantable medical device may have a housing or it may have a housing and a member for providing a smooth interface between the device and the tissue. The lubricious material may be provided on or impregnated in the housing or the member. In some embodiments, the device is configured for implantation in the head of a human body. In other embodiments, the device is configured for implantation between the cranium and the scalp. In some embodiments, the device includes a single module while in other embodiments a plurality of modules are coupled together to provide a smaller profile.
    Type: Grant
    Filed: September 25, 2006
    Date of Patent: October 20, 2015
    Assignee: Medtronic, Inc.
    Inventors: Ruchika Singhal, Darren A. Janzig, Carl D. Wahlstrand, Robert M. Skime, Paulette C. Olson, Erik R. Scott, James E. Randall
  • Patent number: 9050630
    Abstract: A powder-classification method includes a mixing step in which a powder and a liquid additive are mixed together, a drying step in which the powder mixed in the mixing step is dried, a loading step in which the powder dried in the drying step is loaded into a fluid classifier, a heating step in which a gas is heated, a supplying step in which the gas heated in the heating step is supplied to the fluid classifier, and a classifying step in which the powder is classified in the fluid classifier based on a grain size of the powder.
    Type: Grant
    Filed: February 24, 2012
    Date of Patent: June 9, 2015
    Assignee: NISSHIN SEIFUN GROUP INC.
    Inventors: Kazumi Kozawa, Kosuke Ando, Daisuke Sato
  • Publication number: 20150125874
    Abstract: Described herein are assays for determining total suspended solids (TSS) in liquids. Here TSS can be determined by flowing turbid liquid samples in a porous medium. Using such an assay, TSS can be determined with small volumes of liquid and in short times without the need for dedicated optics and instruments. The assays can be used to determine total suspended solids in any liquid medium, for example, the assay can be used in an immunoprecipitin assay to determine the amount of antigen or antibody present in blood or other fluid.
    Type: Application
    Filed: May 2, 2013
    Publication date: May 7, 2015
    Inventors: Anand Bala Subramaniam, George M. Whitesides, Olga Taran, Elizabeth Jane Maxwell
  • Patent number: 9010198
    Abstract: An example aircraft debris monitoring sensor assembly includes an aircraft conduit defining a hollow core passage extending axially from an inlet opening to an outlet opening. A sensor arrangement detects debris carried by a fluid within the hollow core passage.
    Type: Grant
    Filed: July 29, 2011
    Date of Patent: April 21, 2015
    Assignee: United Technologies Corporation
    Inventors: Ravi Rajamani, Alexander I. Khibnik, William Donat, Rajendra K. Agrawal
  • Patent number: 8960027
    Abstract: Provided is a method for classifying a powder using a classifier, wherein the method comprises: a mixing step for mixing a powder and an auxiliary agent formed from an alcohol aqueous solution containing 10 to 50 mass % of an alcohol; an introduction step for introducing the powder mixed in the mixing step to the classifier; a heating step for heating a gas; a feed step for feeding the gas heated in the heating step to the classifier; and a classifying step for classifying the powder in the classifier on the basis of grain size.
    Type: Grant
    Filed: April 23, 2010
    Date of Patent: February 24, 2015
    Assignee: Nisshin Engineering Inc.
    Inventors: Kazumi Kozawa, Satoshi Akiyama, Kosuke Ando
  • Patent number: 8925398
    Abstract: A method for classifying a powder using a fluid classifier, which comprises a mixing step of mixing a powder and an assistant agent composed of an alcohol, an input step of inputting the powder mixed in the mixing step into the fluid classifier, a heating step of heating a gas, a supply step of supplying the gas heated in the heating step into the fluid classifier, and a classification step of classifying the powder according to particle diameters in the fluid classifier.
    Type: Grant
    Filed: August 26, 2009
    Date of Patent: January 6, 2015
    Assignee: Nisshin Seifun Group Inc.
    Inventors: Kazumi Kozawa, Satoshi Akiyama, Kosuke Ando
  • Patent number: 8919183
    Abstract: A new instrument for electrical-mobility based size segregation of particles at high resolution is described. The instrument called the high-flow dual-channel differential mobility analyzer (HD-DMA) comprises of five flows: a polydisperse aerosol flow, a clean sheath flow, two monodisperse sample flows and a residual excess flow. High resolution measurements are possible because of the large sheath flowrates that are permissible in this instrument.
    Type: Grant
    Filed: November 2, 2009
    Date of Patent: December 30, 2014
    Assignee: Clarkson University
    Inventors: Suresh Dhaniyala, Praney Dubey
  • Patent number: 8915144
    Abstract: The invention relates to a method for measuring a material flow by means of microwaves, a sensor arrangement for measuring a material flow by means of microwaves and a device having a sensor arrangement, and to the use of a monostatic continuous wave radar for measuring a moving material flow consisting of particles or fluid. This has the advantage that the material flow consisting of particles or fluid can be quantitatively detected and/or the particles can be counted.
    Type: Grant
    Filed: May 2, 2012
    Date of Patent: December 23, 2014
    Assignee: MSO Messtechnik und Ortung GmbH
    Inventor: Peter Hien
  • Publication number: 20140259456
    Abstract: Woven, unfinished textiles or yarns may be made softer and more brightly-colored by a method which comprises treating a yarn to weave fabric by sizing the yarn to weave fabric; desizing the sized fabric; bleaching the desized fabric; reducing the number of electrolytes on the bleached fabric; pre-softening the fabric having fewer electrolytes; fabric printing the pre-softened fabric; and finishing the fabric printed fabric. A fabric printed textile comprising a self cross-linked low glass transition temperature acrylic binder film on fibers of a fabric printed textile, where the fibers are impregnated with a polysiloxane polymer.
    Type: Application
    Filed: March 13, 2013
    Publication date: September 18, 2014
    Applicant: WestPoint Home LLC
    Inventors: Billy Harris, Imran Ahmad Cheema, Akram Shahzad, Gul Ahmad
  • Publication number: 20140260702
    Abstract: Apparatuses, methods, and systems are disclosed for analyzing particles from about 0.001 to about 1 ?m in diameter by controlling a gaseous medium through which the particles travel so that properties of the particles, such as diameter, electrical mobility, and charge, are measured. One embodiment of the disclosed apparatuses includes a particle source generator, a nozzle, a chamber, an electronic gate, and a detector. Resolution of the measurements made by the disclosed apparatuses is improved by use of a mathematical deconvolution of a spread in arrival times generated by particles of different sizes and charge levels and non-ideal background flow velocity variations.
    Type: Application
    Filed: January 3, 2014
    Publication date: September 18, 2014
    Applicant: CARDIO METRIX
    Inventors: William Henry BENNER, Donald John HOLVE
  • Patent number: 8813585
    Abstract: A method for quality control and quality assurance of sized bridging materials rotates a control sample having a fluid portion and a solids portion of sized bridging materials in a tubular container for a predetermined period of time. The control sample is then analyzed in a laser particle size analyzer to determine a particle size distribution for the control sample. A wet grinding sample having a fluid portion and a solids portion of the sized bridging materials is then rotated in the tubular container with a loose cylinder rod for a predetermined time to simulate borehole conditions. The wet grinding sample is then analyzed in the laser particle size analyzer to determine a particle size distribution for the wet grinding sample. The two particle size distributions are used to define a shift factor that represents the relative strength of the sized bridging materials.
    Type: Grant
    Filed: October 20, 2011
    Date of Patent: August 26, 2014
    Assignee: Saudi Arabian Oil Company
    Inventors: Md. Amanullah, John T. Allen, Mohammed H. Kilani
  • Patent number: 8805586
    Abstract: The present invention relates to a system for optimizing and controlling the particle size distribution and scale-up of production of nanoparticle in an aerosol flame reactor. The method provides nanoparticles with desired, optimized and controlled particle size and the specific surface area in aerosol reactors using a simulation tool with programmed instructions. The simulation tool couples flame dynamics model and particle population balance model.
    Type: Grant
    Filed: July 11, 2011
    Date of Patent: August 12, 2014
    Assignee: Tata Consultancy Services Limited
    Inventors: Venkataramana Runkana, Venkata Sudheendra Buddhiraju, Nagaravi Kumar Varma Nadimpalli
  • Publication number: 20140216181
    Abstract: An acute medical particulate testing device for determining particle shed from a medical device during implantation. The device includes a closed loop system through which a solution is forcibly passed. An inlet port allows a catheter-mounted medical device to be incorporated into the flow loop. At least one tortuous passage is provided to replicate the vascular pathway and tortuosity which simulates the turns and bends and rubbing that affect particulate release from an implantable medical device as it is passed through the vasculature. A debubbler is provided to remove air bubbles from the solution before it is passed into a particle counting device that counts particle shed from the medical device during the simulated implantation. A filter having desired porosity removes particles from the solution. A final filter system removes all particles and air bubbles from the solution before it is re-circulated through the loop.
    Type: Application
    Filed: February 6, 2014
    Publication date: August 7, 2014
    Applicant: Dynatek Labs, Inc.
    Inventors: James C. Conti, Elaine R. Strope
  • Patent number: 8720288
    Abstract: A counter assembly, sheath flow impedance count device, and flow cytometer analyzer are disclosed.
    Type: Grant
    Filed: December 22, 2011
    Date of Patent: May 13, 2014
    Assignee: Shenzhen Mindray Bio-Medical Electronics Co., Ltd
    Inventors: Tao Shen, Wenheng Guo, Jin Teng
  • Patent number: 8716204
    Abstract: Artificial or synthetic synovial fluids and methods for making such fluids are disclosed. The fluid includes selected proteins, phospholipids and hyaluronic acid and mimics the properties of human synovial fluid.
    Type: Grant
    Filed: July 26, 2011
    Date of Patent: May 6, 2014
    Assignee: Zimmer, Inc.
    Inventors: Norman Stark, Maria S. Streckenbach, Seth Gilchrist, Thorsten Schwenke, Brian Thomas
  • Patent number: 8689652
    Abstract: This invention relates to a method for determining the average surface radius ro and/or the density r of the particles of a nanopowder in a sample levitating in an electropositive plasma with a volume V formed between a first electrode powered by a radiofrequency voltage and a second electrode with a fixed voltage, in particular a ground one, characterized in that: V is the amplitude at the measuring time t of the radiofrequency voltage RF powering the first electrode when the powder is present in the plasma, V is the amplitude of said radiofrequency voltage powering the first electrode in the absence of powder in the plasma, V is the self-polarization voltage of the first electrode at the time t when the powder is present in the plasma, V is the self-polarization voltage of the first electrode in the absence of powder in the plasma, ?AB is the surface variation of the second electrode in the presence of powder at the time t relative to a situation in which powder is absent, and the values of n and K are dete
    Type: Grant
    Filed: March 12, 2010
    Date of Patent: April 8, 2014
    Assignees: Centre National de la Recherche Scientifique, Universite d'Orleans
    Inventors: Laïfa Boufendi, Gaëtan Wattieaux
  • Patent number: 8635920
    Abstract: A particle detector (10) has a particle sensing surface (12) and a detecting layer (13). Provided on the particle sensing surface (12) is a random arrangement of projecting dactyls (15) which form boundaries to confinement cages (14). Only those particles having a size and shape that permits them to fit into the confinement cages between the dactyls are detected. The particle detector (10) advantageously is adapted to identify a large variety of different particles using the same detector.
    Type: Grant
    Filed: November 3, 2006
    Date of Patent: January 28, 2014
    Assignee: ImmunoClin Limited
    Inventors: Railton Frith, Dorothy Bray, Kadija Benhlassan-Chahour, Vadim Strizhov, Maxim Karban
  • Patent number: 8627733
    Abstract: A device (1,2) for characterizing a size distribution of electrically-charged particles in an air flow (50), comprising: a particle charging unit (60), a parallel arrangement of a first measurement section (10) and a second measurement section (20), located downstream from the particle charging unit (60), and a data evaluation unit (40), wherein the first measurement section (10) comprises: a first particle sensing unit (11) arranged to precipitate substantially all entering electrically-charged particles, and to generate a first output signal (41), the second measurement section (20) comprises: a second particle sensing unit (21) arranged to precipitate at least part of all entering electrically-charged particles, and to generate a second output signal (42), and a first particle precipitation unit (22) arranged to partially reduce the concentration of electrically-charged particles having a size larger than a first particle size limit, the data evaluation unit (40) for calculating a particle number concentra
    Type: Grant
    Filed: December 8, 2008
    Date of Patent: January 14, 2014
    Assignee: Koninklijke Philips N.V.
    Inventor: Johan Marra
  • Patent number: 8627732
    Abstract: The invention relates to a device that can reliably characterize a size distribution of electrically-charged airborne particles in an air flow under both stationary conditions and transient conditions. The device comprises a particle charging unit, a first particle precipitation unit located downstream of the particle charging unit, a second particle precipitation unit located downstream of the first particle precipitation unit, and a data evaluation unit. The first particle precipitation unit is arranged to partially reduce the concentration of electrically-charged airborne particles having a size larger than a first particle size limit, and to generate a first output signal corresponding to the precipitation of electrically-charged airborne particles inside the first particle precipitation unit.
    Type: Grant
    Filed: December 1, 2008
    Date of Patent: January 14, 2014
    Assignee: Koninklijke Philips N.V.
    Inventor: Johannes Marra
  • Patent number: 8570512
    Abstract: Methods, storage mediums, and systems for correlating pulses generated from multiple interrogation regions in a flow cytometer to particular particles flowing through the flow cytometer are provided. Embodiments of the methods, storage mediums, and systems include configurations for calibrating a flow cytometer using a calibration particle having a unique signature to determine a time-of-flight for particles flowing through the flow cytometer. Based on the calculated time-of-flight and relative positions of interrogation regions corresponding to collectors of the flow cytometer, the methods, storage mediums, and systems may further include configurations for associating other signal pulses to particles of one or more different particle sets.
    Type: Grant
    Filed: April 3, 2012
    Date of Patent: October 29, 2013
    Assignee: Luminex Corporation
    Inventor: Adam Richard Schilffarth
  • Patent number: 8555700
    Abstract: A particulate filter particularly suited for analytical gravimetric weighing applications is disclosed. The particulate filter includes a polytetrafluoroethylene (PTFE) media supported by a ring and yields stable microgram and submicrogram weighing results. The support ring may be PTFE, metal foil, or another non-hygroscopic polymer such that the mass of the filter does not vary with changes in atmospheric moisture. The filter simplifies the discharge of electrostatic charge buildup such that when a conductive filter media is combined with a conductive ring device, the discharge may be accomplished by placing the filter on a grounded weighing pan or other surface. The particulate filter can simplify filter identification by including identification symbols imprinted on each side of the filter media.
    Type: Grant
    Filed: December 17, 2012
    Date of Patent: October 15, 2013
    Assignee: Measurement Technology Laboratories, LLC
    Inventor: David A. Dikken
  • Patent number: 8528406
    Abstract: One or more of the embodiments of the present invention provide for a method of non-contact particle manipulation and control of particle spacing along an axis which includes axial and radial acoustic standing wave fields. Particles are suspended in an aqueous solution, and this solution then flows into the cylindrical flow channel. While the solution flows through the flow channel, the outer structure of the flow channel is vibrated at a resonant frequency, causing a radial acoustic standing wave field to form inside the flow channel in the solution. These radial acoustic standing waves focus the particles suspended in the solution to the center axis of the cylindrical flow channel. At the same time, a transducer is used to create an axial acoustic standing wave field in the flow channel parallel to the axis of the flow channel.
    Type: Grant
    Filed: October 24, 2007
    Date of Patent: September 10, 2013
    Assignee: Los Alamos National Security, LLP
    Inventors: Gregory Russ Goddard, Gregory Kaduchak, James Hubert Jett, Steven Wayde Graves
  • Patent number: 8528427
    Abstract: The present invention relates to a vacuum-driven fluidic system for a flow-type particle analyzer. The system includes a vacuum pump which creates a pressure drop downstream of the flow cell, which pulls sheath fluid and sample fluid through the flow cell. A variable-resistance fluidic resistor is configured to control the ratio of sample fluid flow to sheath fluid flow. Dual feedback circuits, one configured to modulate the vacuum pump power in response to the pressure drop across the flow cell, referred to as the dynamic pressure drop, and a second configured to modulate the vacuum pump power in response to the pressure drop created by the vacuum pump relative to ambient pressure, referred to as the static pressure drop, are used to automatically control the system. The present invention enables adjustment of the sample fluid flow rate while maintaining a constant total fluid flow through the flow cell, and further, enables pausing the system without significant fluctuations in the vacuum.
    Type: Grant
    Filed: September 21, 2011
    Date of Patent: September 10, 2013
    Assignee: Becton, Dickinson and Company
    Inventors: David Vrane, Pierce O. Norton
  • Patent number: 8511185
    Abstract: A sensor element assembly, including: a sensor element; lead frames provided with the sensor element therebetween, the lead frames fixing the sensor element; a first head protection film protecting the sensor element fixed between the lead frames; an insulating film covering the first head protection film and the lead frames to insulate the lead frames; and a second head protection film (resin layer) further covering the head covered with the insulating film. The sensor element assembly is advantageous in that an epoxy resin layer is formed on a film layer covering a sensor element, so that the strength of the sensor element assembly can be maintained by the epoxy resin layer itself, thereby improving the impact resistance and compressive strength thereof.
    Type: Grant
    Filed: May 11, 2009
    Date of Patent: August 20, 2013
    Assignee: Lattron Co. Ltd.
    Inventors: Chung Kook Lee, Young Seong Wang, Cheol Jin Jeong
  • Patent number: 8495907
    Abstract: Disclosed is a method for measuring the drying time of a moisture-wicking and quick-drying material that enables convenient and precise measurement of the drying time of the material by creating an environment similar to the skin surface of a human body wearing clothes. The method includes: creating a temperature and humidity state similar to a condition in which sweat of a human body is shed on the bottom surface of a test material; blowing wind to the upper surface of the test material at a speed similar to a speed at which a human being is walking; dropping distilled water to the upper surface of the test material with the temperature and humidity state and the wind speed being maintained constant; and measuring the drying time of the test material with the distilled water having been dropped to the upper surface of the test material.
    Type: Grant
    Filed: June 25, 2008
    Date of Patent: July 30, 2013
    Assignee: Fiti Testing & Research Institute
    Inventors: You kyum Kim, Yea suk Yoon
  • Patent number: 8448534
    Abstract: An apparatus for dispersing a sample of particulate material, includes a carrier (31;35;37;38;39) having a sample-bearing surface on which to place the sample, and a housing (10;44;48) for forming a dispersion chamber (17), at least when closed off at a base (46;51). The carrier is arranged such that the sample-bearing surface is removed from contact with the sample upon application of a sufficient pressure differential across the carrier between the sample-bearing surface and an opposite side of the carrier. The housing (10;44;48) has an inlet (26) at least partially facing the base (46;51). The apparatus includes an apparatus (15;16) for passing a volume of fluid past the carrier (31;35;37;38;39) through the inlet (26) by subjecting the carrier (31;35;37;38;39) to a pulsed positive pressure differential relative to the dispersion chamber (17).
    Type: Grant
    Filed: May 19, 2008
    Date of Patent: May 28, 2013
    Assignee: Malvern Instruments Incorporated
    Inventors: Nicholas Craig Davidson, Margaret Ellen Dyson, Jonathan Powell, Andrew John Prior
  • Patent number: 8424397
    Abstract: The invention relates to a particle counter apparatus for counting particles in a fluid flowing in a pipe or a pipeline. The particle counter apparatus comprises a pipe portion through which the fluid flows, where the pipe portion is provided with a fluid sample outlet for withdrawal of a fluid sample. Furthermore the particle counter apparatus also comprises a first fluid transfer body extending from the fluid sample outlet to a particle counter, and a second fluid transfer body extending from the particle counter to a fluid return outlet mounted in the pipe portion downstream of the fluid sample outlet. In the pipe portion there is mounted a propeller unit comprising a propeller and a generator, with the result that particles are distributed uniformly in the fluid before the withdrawal of fluid samples, and electric power is provided for operation of the particle counter apparatus.
    Type: Grant
    Filed: March 14, 2008
    Date of Patent: April 23, 2013
    Assignee: Fras Technology AS
    Inventor: Sølve Fjerdingstad
  • Publication number: 20130081485
    Abstract: A method for quality control and quality assurance of sized bridging materials rotates a control sample having a fluid portion and a solids portion of sized bridging materials in a tubular container for a predetermined period of time. The control sample is then analyzed in a laser particle size analyzer to determine a particle size distribution for the control sample. A wet grinding sample having a fluid portion and a solids portion of the sized bridging materials is then rotated in the tubular container with a loose cylinder rod for a predetermined time to simulate borehole conditions. The wet grinding sample is then analyzed in the laser particle size analyzer to determine a particle size distribution for the wet grinding sample. The two particle size distributions are used to define a shift factor that represents the relative strength of the sized bridging materials.
    Type: Application
    Filed: October 20, 2011
    Publication date: April 4, 2013
    Applicant: SAUDI ARABIAN OIL COMPANY
    Inventors: Md. Amanullah, John T. Allen, Mohammed H. Kilani
  • Patent number: 8306763
    Abstract: Systems and methods are provided for determining information about particle geometry are provided. As such, an ultrasonic transducer acts as both a transmitter and a receiver. The transducer insonifies a particle and scattered waves are then received by the transducer—now acting as a receiver. A small flat target moving relative to a stationary receiver will lead to the same radiated field as waves propagating through an equivalent moving aperture. Based on the Doppler distribution of the scattered or radiated waves resulting from relative motion between the particles and a receiver, the acoustic pressure field in the plane of the equivalent two-dimensional aperture can be inferred. The equivalent aperture geometry can be obtained from the inferred field. Hence, the particle geometry can be determined.
    Type: Grant
    Filed: February 5, 2010
    Date of Patent: November 6, 2012
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Anthony A. Ruffa
  • Patent number: 8263407
    Abstract: Method and system for uniformly spacing particles in a flowing system comprising suspending particles in an elongated fluid filled cavity; exposing said cavity to an axial acoustic standing wave field, wherein said axial acoustic standing wave field drives said particles to nodal and anti-nodal positions along the center axis of said cavity to result in uniformly spaced particles; and focusing said particles to the center axis of said cavity.
    Type: Grant
    Filed: October 23, 2008
    Date of Patent: September 11, 2012
    Assignee: Los Alamos National Security, LLC
    Inventors: Gregory Russ Goddard, Gregory Kaduchak, James Hubert Jett, Steven Wayde Graves
  • Patent number: 8253578
    Abstract: The present invention provides a smoke sensor of sound wave type that excels in responsiveness and has a low probability of false detection. The smoke sensor has a sound wave generating unit that provides an ultrasound wave to a monitoring space, a sound wave receiving unit that receives the ultrasound wave from the sound wave generating unit via the monitoring space, and a signal processing unit that detects an abnormality of the monitoring space by using an output of the sound wave receiving unit. The signal processing unit includes a smoke density estimation unit that estimates a smoke density in the monitoring space on the basis of a difference between the output of the sound wave receiving unit and a standard value, and a smoke density determination unit that determines the abnormality of the monitoring space by comparing the smoke density estimated by the smoke density estimation unit with a predetermined threshold.
    Type: Grant
    Filed: May 1, 2007
    Date of Patent: August 28, 2012
    Assignee: Panasonic Corporation
    Inventors: Yoshifumi Watabe, Yoshiaki Honda, Tomizo Terasawa, Yuji Takada, Takayuki Nishikawa
  • Patent number: 8247764
    Abstract: A method and an apparatus are described to focus sharply a wide range of particle sizes for particles suspended in a relatively high flow rate of carrier gas. The particles are accelerated through a continuously converging ladder of smooth contractions, each designed such that: (i) the flow remains laminar at substantial Reynolds numbers; (ii) a certain band of particle sizes is focused in each contraction, without substantial defocusing of larger particle focused in one or several preceding contractions; (iii) the form, length, and ratio of entry to exit diameter of each contraction, as well as the number of consecutive contractions are chosen such that all particles within a given relatively wide range of sizes are focused at the end of the ladder of contraction steps into a relatively narrow focal region. The focusing apparatus coupled to a collector device constitutes a new type of virtual impactor, termed a focusing virtual impactor, which can also be used as a powerful particle concentrator.
    Type: Grant
    Filed: June 6, 2009
    Date of Patent: August 21, 2012
    Assignee: Sociedad Europea de Analisis Diferencial de Movilidad
    Inventors: Guillermo Vidal-de-Miguel, Juan Fernandez-de-la-Mora
  • Patent number: 8225483
    Abstract: The torque sensor includes a plurality of coil units having a substantially cylindrical shape, the coil units including a plurality of detection coils arranged to face a magnetic characteristic change portion formed on a rotary shaft. The coil units include a first coil unit and a second coil unit, and the first coil unit and the second coil unit are disposed in the axial direction of the shaft. The first coil unit and the second coil unit are fixed in an integrally molded resin. Thereby, there is provided a torque sensor having a high productivity and an easy configuration and a method of manufacturing the torque sensor.
    Type: Grant
    Filed: July 29, 2009
    Date of Patent: July 24, 2012
    Assignee: Honda Motor Co., Ltd.
    Inventors: Katsuji Watanabe, Yasuo Shimizu, Atsuhiko Yoneda, Tsunehiko Fukatsu
  • Patent number: 8212575
    Abstract: A matrix analyzer for determining the size and location of a conductive item placed thereon. The matrix analyzer includes plural row conductors and column conductors with a corresponding grid of conductive areas exposed on the surface of the matrix analyzer. When a conductive item, such as an ink droplet, is jetted onto the matrix analyzer, the intersection of various row conductors and column conductors exhibit a low resistance. The rows and columns of the matrix analyzer can be sequentially accessed to find those intersections where the low resistance exists. From such data, the size and location of the ink droplets can be determined.
    Type: Grant
    Filed: December 29, 2008
    Date of Patent: July 3, 2012
    Assignee: Lexmark International, Inc.
    Inventor: David Thomas Shadwick
  • Publication number: 20120137796
    Abstract: This invention relates to a method for determining the average surface radius ro and/or the density r of the particles of a nanopowder in a sample levitating in an electropositive plasma with a volume V formed between a first electrode powered by a radiofrequency voltage and a second electrode with a fixed voltage, in particular a ground one, characterised in that: V is the amplitude at the measuring time t of the radiofrequency voltage RF powering the first electrode when the powder is present in the plasma, V is the amplitude of said radiofrequency voltage powering the first electrode in the absence of powder in the plasma, V is the self-polarisation voltage of the first electrode at the time t when the powder is present in the plasma, V is the self-polarisation voltage of the first electrode in the absence of powder in the plasma, ?AB is the surface variation of the second electrode in the presence of powder at the time t relative to a situation in which powder is absent, and the values of n and K are dete
    Type: Application
    Filed: March 12, 2010
    Publication date: June 7, 2012
    Applicants: UNIVERSITE D'ORLEANS, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE
    Inventors: Laïfa Boufendi, Gaëtan Wattieaux
  • Patent number: RE44906
    Abstract: A device for sampling drill cuttings includes a frame, an inclined having a perforated planar member mounted on the frame, a sprayer for washing cuttings down over the perforations, and a. A removable open-topped cuttings collector mounted under the perforated planar member, the. The perforated member cooperating cooperates with the downstream end of a vibratory screen over which the cuttings pass before translating onto the perforated screen. The frame mounts to the vibratory screen so that vibrations of the vibratory screen also vibrate the perforated planar member and cuttings collector.
    Type: Grant
    Filed: June 7, 2012
    Date of Patent: May 27, 2014
    Inventor: Willy Rieberer