To Determine Oil Qualities Patents (Class 324/698)
  • Patent number: 10746680
    Abstract: A sensor system includes a multi-frequency sensor assembly including a single sensor body housing with a sensing region circuit and a sensor reader disposed in the sensor body. The sensor body is configured to be in operational contact with a fluid. The sensing region circuit is configured to generate different electric fields having different frequencies in the fluid. The sensor reader includes one or more processors configured to examine one or more impedance responses of the sensing region circuit at different frequencies and to determine one or more properties of the fluid based on the one or more impedance responses that are examined.
    Type: Grant
    Filed: March 3, 2016
    Date of Patent: August 18, 2020
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Radislav Alexandrovich Potyrailo, Daniel White Sexton, Steven Y. Go
  • Patent number: 10315137
    Abstract: A sensing system for detecting degradation of a machine fluid is disclosed. The sensing system may comprise a tag having electrical contacts. The tag may be configured to transmit a wireless signal when the electrical contacts are in electrical communication. The sensing system may further comprise a dissolvable element separating the electrical contacts and obstructing electrical communication between the electrical contacts. The dissolvable element may be configured to dissolve and allow electrical communication between the electrical contacts when an acid content of the machine fluid reaches a level indicative of the degradation of the machine fluid.
    Type: Grant
    Filed: November 18, 2016
    Date of Patent: June 11, 2019
    Assignee: Caterpillar Inc.
    Inventors: Philip C. Spengler, Jeffrey R. Ries, Hind Abi-Akar
  • Patent number: 10178927
    Abstract: A system for measuring the state of degradation of cooking oil in a deep fryer is provided. The system includes at least one fryer pot and a loop of piping fluidly connected thereto for selectively allowing flow of oil from the at least one fryer pot into the loop and for selectively allowing the cooking oil to return to said at least one fryer pot from the loop. A pump urges the flow of cooking oil through the loop of piping and selectively to urge oil to return to the at least one fryer pot. The loop further comprises a return portion that extends from a discharge of the pump toward a suction of the pump. A sensor is disposed in the return portion of the loop and adapted to measure an electrical property that is indicative of total polar materials of said cooking oil.
    Type: Grant
    Filed: January 5, 2018
    Date of Patent: January 15, 2019
    Assignee: Pitco Frialator, Inc.
    Inventors: Owen R. McGhee, Selim A. Bassoul, Jason D. Finnie, Jared Perkins, Nathaniel A. Lambert, Michael T. Fecteau
  • Patent number: 9995701
    Abstract: A sensor system can be configured to perform dielectric spectroscopy (DS). For example, the system can include a sensor configured to measure dielectric permittivity of a fluid in response to an RF input signal. Associated interface electronics can include a transmitter to drive the sensor with the RF input signal and a receiver to receive and process an RF output signal from the sensor in response to the RF input signal.
    Type: Grant
    Filed: June 2, 2015
    Date of Patent: June 12, 2018
    Assignee: Case Western Reserve University
    Inventors: Pedram Mohseni, Michael A. Suster, Mehran Bakshiani, Umut Gurkan
  • Patent number: 9885677
    Abstract: Embodiments of the present disclosure provide techniques and configurations for an apparatus for providing liquid quality measurements. In one instance, the apparatus may comprise a printed circuit board (PCB) having first and second electrodes associated with the PCB, to directly contact with a liquid to obtain a plurality of electrical parameters of the liquid when electrical current passes between the first and second electrodes while in contact with the liquid, wherein the electrical parameters are associated with quality of the liquid. The PCB may further comprise circuitry disposed thereon and coupled to the first and second electrodes to collect the electric parameters of the liquid. Other embodiments may be described and/or claimed.
    Type: Grant
    Filed: May 23, 2014
    Date of Patent: February 6, 2018
    Assignee: Intel Corporation
    Inventors: Amit S. Baxi, Vincent S. Mageshkumar
  • Patent number: 9510708
    Abstract: A system for measuring the state of degradation of cooking oil or fat includes at least one fryer pot; a conduit fluidly connected to the fryer pot for transporting cooking oil from the fryer pot and returning the cooking oil back to the fryer pot. A pump for re-circulating cooking oil to and from the fryer pot; and a sensor disposed in fluid communication with the conduit that measures an electrical property of the cooking oil as the cooking oil flows past the sensor and is returned to the at least one fryer pot is provided.
    Type: Grant
    Filed: June 21, 2013
    Date of Patent: December 6, 2016
    Assignee: FRYMASTER L.L.C.
    Inventors: Martin Behle, Jan Claesson, Janice M. K. Jaferian
  • Patent number: 9488612
    Abstract: A method of determining the compatibility of a lubricating fluid with an energized electrical or electronic component comprises: (a) contacting a test apparatus with the fluid; (b) applying an electrical current to the test apparatus; and (c) monitoring the current flow through the test apparatus over time. The test apparatus includes at least one pair of conductors separated by an insulator that does not extend across the whole of the opposing surfaces of the conductors. The electrical current is applied across the pair of conductors. Also described is a device for performing the method, a method of selecting a lubricant and a lubricant so selected.
    Type: Grant
    Filed: June 4, 2014
    Date of Patent: November 8, 2016
    Assignee: Infineum International Limited
    Inventor: Raymond F. Watts
  • Patent number: 9395312
    Abstract: A first chromium mass concentration and a first reference mass concentration are extracted from a first test substance made by adding a predetermined amount of calcium to a predetermined amount of pellets; a reference value is calculated on the basis thereof. A second chromium mass concentration and a second reference mass concentration are extracted from a second test substance made by adding, to a predetermined amount of the substance contained in the molded part, an amount of calcium identical to the amount added to the pellets; a comparative value is calculated on the basis thereof. A screw can be determined to have wear whenever the comparative value is not less than a numerical value 60 times that of the reference value, whereas the screw can be determined not to have wear whenever the comparative value is less than a numerical value 60 times that of the reference value.
    Type: Grant
    Filed: October 16, 2013
    Date of Patent: July 19, 2016
    Assignee: TOYO MACHINERY & METAL CO., LTD.
    Inventors: Kazuyuki Shibata, Akira Inoue, Yasutake Sawada, Kensuke Moritani
  • Patent number: 9007073
    Abstract: Provided are a method of measuring a degree of degradation of a lubricating oil and a measuring device therefor, in which (a) acidity is measured through use of an ISFET of hydrogen ion sensitive type and (b) dielectric constants or electrostatic capacitances at two or more different frequencies are obtained, to thereby determine a degradation state of the lubricating oil based on the acidity and a plurality of values of the dielectric constants or the electrostatic capacitances. Accordingly, the degree of degradation of the lubricating oil can be measured easily and precisely and a degradation mechanism of the lubricating oil can be predicted.
    Type: Grant
    Filed: November 22, 2010
    Date of Patent: April 14, 2015
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventor: Tadashi Katafuchi
  • Patent number: 8975901
    Abstract: Measurement devices, systems, and methods to measure a high field conductivity of a fluid are provided herein. The measurement device includes a fluid cell, a pair of electrodes, a voltage switch, and a measurement unit. The fluid cell is on an inclined plane to receive the fluid. The pair of electrodes are connected to the fluid cell. The pair of electrodes are spaced apart from one another to receive the fluid therebetween and positioned parallel to one another to pass an electrical current therethrough. The power unit provides a high voltage power supply to one electrode of the pair of electrodes. The measurement unit measures the electrical current that passes between the pair of electrodes through the fluid.
    Type: Grant
    Filed: October 24, 2011
    Date of Patent: March 10, 2015
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Henryk Birecki, Omer Gila, Michael H Lee, William D Holland
  • Patent number: 8860429
    Abstract: A test system for testing a sensor system includes a high-impedance resistor for forming a voltage divider with any corrosion or foreign substance that might be present between a signal conductor and a ground conductor. While a voltage is applied across the voltage divider, the voltage can be measured across the high-impedance resistor for determining whether an undesirable amount of conductance exists between the signal wire and ground. The test system also includes switching means for switching between any number of signal wires of a system undergoing testing.
    Type: Grant
    Filed: April 28, 2010
    Date of Patent: October 14, 2014
    Assignee: Textron Innovations Inc.
    Inventor: Gary S. Froman
  • Patent number: 8854058
    Abstract: Provided is a method of measuring a degree of degradation/alteration of a lubricating oil, including obtaining dielectric constants or electrostatic capacitances at two or more different frequencies and determining a degradation/alteration state of the lubricating oil based on values of the dielectric constants or the electrostatic capacitances, in which one frequency (H1) of the two or more frequencies is in a range of 1 to 100 Hz, and another frequency (H2) is more than the frequency (H1) and in a range of 10,000 Hz or less. Accordingly, it is possible to provide a method of measuring a degree of degradation/alteration of a lubricating oil and a measuring device therefor, which are capable of measuring a degree of degradation of the lubricating oil easily and precisely and predicting a degradation/alteration mechanism of the lubricating oil.
    Type: Grant
    Filed: November 22, 2010
    Date of Patent: October 7, 2014
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventor: Tadashi Katafuchi
  • Patent number: 8847120
    Abstract: A fryer measures cooking medium quality, and includes a cooking vessel configured to store a cooking medium, an electrode plate completely immersed in the cooking medium, an insulator comprising a first side and a second side, wherein the first side of the insulator is fixed to the electrode plate, and a second side of the insulator is attached to a wall of the cooking vessel, a guard ring fixed to the cooking vessel and surrounding the electrode plate and insulator. The guard ring extends further away from the wall of the cooking vessel than the electrode plate. A size of a gap between the guard ring and the electrode plate is based on a height, a width, and a thickness of the electrode plate and substantially defines a gain of the electrode. A signal conditioning circuit measures the conductivity of the cooking medium applied to the electrode.
    Type: Grant
    Filed: August 22, 2011
    Date of Patent: September 30, 2014
    Assignee: Henny Penny Corporation
    Inventors: Douglas A. Burkett, Edmond L. Phillipps, Jr.
  • Patent number: 8736282
    Abstract: A device for capacitive measurement of the quality and/or deterioration of a fluid includes a sensor encapsulated in a perforated case fixed in the vat of a cooking apparatus that has a bottom, wherein the sensor is connected to an electronic processing circuit, wherein the sensor includes a pair of flat electrodes each having the shape of a comb with a plurality of teeth, which are approximately parallel to each other and extends from a base, wherein the electrodes are arranged relative to each other so teeth of one electrode fit between teeth of the other electrode in approximately the same plane, and the encapsulated sensor is oriented in the vat so the longitudinal axis of each electrode base extends parallel to the bottom of the vat and so the plane of the sensor electrodes forms an angle of between 0° and 60° with the vertical direction.
    Type: Grant
    Filed: April 18, 2008
    Date of Patent: May 27, 2014
    Assignee: Alpsens Technologies Inc.
    Inventor: Gérald Chambon
  • Patent number: 8686745
    Abstract: An apparatus and a method are described for measuring water content and salt concentration in a multiphase fluid flow. A capacitive sensor (6, 7) is arranged in a pipe section (5) through which the multiphase fluid flow passes. A signal generator (10) is connected to the capacitive sensor (6, 7). A first measuring transducer (40) is adapted to measure a voltage across the capacitive sensor, and a second measuring transducer (50) is adapted to measure a current through the capacitive sensor. An output circuit (60) is adapted to generate output signals (70, 72) that indicate the salt concentration and water content in the multiphase fluid flow, based on signals emitted from the first (40) and the second (50) measuring transducer.
    Type: Grant
    Filed: October 3, 2008
    Date of Patent: April 1, 2014
    Assignee: FMC Kongsberg Subsea AS
    Inventor: Odd Jan Kirkaune
  • Patent number: 8664966
    Abstract: A method of evaluation a degree of degradation of a lubricating oil, comprising: using a device for evaluating a degree of degradation of a lubricating oil, the device comprising a pH-ISFET which is free from a reference electrode; and measuring a current flowing between a drain and a source of the pH-ISFET with a first circuit wherein a constant voltage is applied between the drain and the source, or measuring a voltage between a drain and a source with a second circuit wherein a constant current is caused to flow between the drain and the source.
    Type: Grant
    Filed: March 3, 2009
    Date of Patent: March 4, 2014
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventor: Tadashi Katafuchi
  • Patent number: 8653830
    Abstract: Methods and apparatuses for evaluating a material are described. Embodiments typically involve use of an impedance measurement sensor to measure the impedance of a sample of the material under at least two different states of illumination. The states of illumination may include (a) substantially no optical stimulation, (b) substantial optical stimulation, (c) optical stimulation at a first wavelength of light, (d) optical stimulation at a second wavelength of light, (e) a first level of light intensity, and (f) a second level of light intensity. Typically a difference in impedance between the impedance of the sample at the two states of illumination is measured to determine a characteristic of the material.
    Type: Grant
    Filed: December 2, 2008
    Date of Patent: February 18, 2014
    Assignee: UT-Battelle, LLC
    Inventors: Lonnie C. Maxey, James E. Parks, II, Samuel A. Lewis, Sr., William P Partridge, Jr.
  • Patent number: 8643388
    Abstract: A method for measuring fuel contamination in oil that uses a material in contact with oil whereby fuel intrusion into the oil will change the electrical, mechanical, and/or chemical properties of the material as compared to the same electrical, mechanical, and/or chemical properties of the material when in contact only with mineral or synthetic oil only.
    Type: Grant
    Filed: August 17, 2010
    Date of Patent: February 4, 2014
    Assignee: Voelker Sensors, Inc.
    Inventor: Joe D. Hedges
  • Patent number: 8614588
    Abstract: Fuel contamination in oil is measured by using a sensor in contact with oil whereby fuel intrusion into the oil will change the electrical, mechanical, and/or chemical properties of the material as compared to the same electrical, mechanical, and/or chemical properties of the material when in contact only with mineral or synthetic oil only. The oil quality sensor provides real-time feedback so that an oil monitoring system can actively remove contaminates and/or increase an additive package as necessary.
    Type: Grant
    Filed: August 17, 2011
    Date of Patent: December 24, 2013
    Assignee: Voelker Sensors, Inc.
    Inventor: Joe Hedges
  • Patent number: 8598897
    Abstract: A system for measuring leakage resistance between a high voltage (HV) system of a vehicle and a vehicle chassis includes an emulated inductance that is connected between the HV system and the vehicle chassis and that has an inductive reactance that substantially cancels a capacitive reactance between the HV system and the vehicle chassis. A signal source outputs one of an AC current signal and an AC voltage signal between the HV system and the vehicle chassis. A sensor measures one of an AC current response to the AC voltage signal between the HV system and the vehicle chassis and an AC voltage response to the AC current signal between the HV system and the vehicle chassis.
    Type: Grant
    Filed: January 24, 2011
    Date of Patent: December 3, 2013
    Assignee: Maxim Integrated Products, Inc.
    Inventor: Mehmet Kadri Nalbant
  • Patent number: 8593162
    Abstract: An object of the invention is to provide a fuel-aspect sensor having higher detection accuracy. A first electrode is inserted into a hole formed in a first housing member. A cylindrical second electrode is inserted into and firmly fixed to the first electrode by a cylindrical insulating member. A first elastic member, for example, made of rubber, is arranged between the first electrode and a second housing member. The first electrode has a large-diameter portion, which is biased by the first elastic member toward a sealing surface formed on an inner wall of the hole, so as to fluid-tightly seal a space between the first electrode and the second housing member.
    Type: Grant
    Filed: December 14, 2009
    Date of Patent: November 26, 2013
    Assignee: Denso Corporation
    Inventors: Hiroshi Nakamura, Akikazu Uchida
  • Patent number: 8587327
    Abstract: A device for use with a conduit having a first conduit end and a conduit second end, into which conduit a cable can be installed using a flow of air into the first conduit end, the device being suitable for confirming that the air is flowing out from the second conduit end. In an embodiment, the device includes a housing, means to enable connection of the device to the second conduit end, a detector arranged to detect an electrical property change, and an actuator for causing an electrical property change detectable by the detector, wherein in use, the air flowing into the device causes the detector and the actuator to move relative to each other, causing an electrical property change detectable by the detector.
    Type: Grant
    Filed: December 23, 2008
    Date of Patent: November 19, 2013
    Assignee: British Telecommunications Public Limited Company
    Inventors: David John Taylor Heatley, Philip Alfred Barker, Ian Neild
  • Publication number: 20130278276
    Abstract: A system for measuring the state of degradation of cooking oil or fat includes at least one fryer pot; a conduit fluidly connected to the fryer pot for transporting cooking oil from the fryer pot and returning the cooking oil back to the fryer pot. A pump for re-circulating cooking oil to and from the fryer pot; and a sensor disposed in fluid communication with the conduit that measures an electrical property of the cooking oil as the cooking oil flows past the sensor and is returned to the at least one fryer pot is provided.
    Type: Application
    Filed: June 21, 2013
    Publication date: October 24, 2013
    Inventors: Martin BEHLE, Jan CLAESSON, Janice M.K. JAFERIAN
  • Patent number: 8497691
    Abstract: A system for measuring the state of degradation of cooking oil or fat includes at least one fryer pot; a conduit fluidly connected to the fryer pot for transporting cooking oil from the fryer pot and returning the cooking oil back to the fryer pot. A pump for re-circulating cooking oil to and from the fryer pot; and a sensor disposed in fluid communication with the conduit that measures an electrical property of the cooking oil as the cooking oil flows past the sensor and is returned to the at least one fryer pot is provided.
    Type: Grant
    Filed: June 16, 2009
    Date of Patent: July 30, 2013
    Assignee: Frymaster L.L.C.
    Inventors: Martin Behle, Jan Claesson, Janice M. K. Jaferian
  • Patent number: 8421613
    Abstract: A method and device for determining the appropriate time to recharge hydraulic fluid in a work vehicle. The method preferably includes making a real time determination of the at least a quality parameter of hydraulic fluid in a work vehicle. The system includes comparing in real time, the quality parameter to a predetermined value for the hydraulic fluid. The method of the present invention also includes a system for comparing the determined values and communicating same to an operator. The method of the present invention also includes the capacity to control the output level of the work vehicle according to the level of contamination in the hydraulic fluid. The present invention also provides a device for real time monitoring and control of the hydraulic fluid.
    Type: Grant
    Filed: March 27, 2006
    Date of Patent: April 16, 2013
    Assignee: Deere & Company
    Inventors: Diego Navarro, Edward John Hermsen
  • Patent number: 8421486
    Abstract: An oil-degradation detecting apparatus that can more accurately judge oil degradation and a mechanical system having a rotating part or a sliding part and including the oil-degradation detecting apparatus are provided. Two plates (21, 22) are disposed in an oil flow path (11) so as to be parallel to each other, an ammeter (24) measures a current that flows when an AC voltage is applied between the two plates (21, 22), a voltmeter measures the voltage between the plates (21, 22), and a signal processor (processor) (31) determines the electrical conductivity and the dielectric constant of the oil (10) based on the measurement results from the ammeter (24) and the voltmeter (25) and judges degradation of the oil (10) based on the electrical conductivity and the dielectric constant.
    Type: Grant
    Filed: June 18, 2008
    Date of Patent: April 16, 2013
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Yo Akiyama, Akihiko Yano, Junichi Kaga, Yoshihiro Deguchi, Taketoshi Yamaura
  • Publication number: 20130036916
    Abstract: A cooking medium filter system determines a quality of a cooking medium. The cooking medium filter system includes a filter container, a filter medium, a pump, a sample chamber, and a controller. The filter container receives the cooking medium from a cooking vessel. The filter medium is disposed in the filter container and removes contaminants from the cooking medium. The pump conveys the cooking medium along a filter path from the filter container to the cooking vessel. The sample chamber is disposed in the filter path downstream from the filter medium. The sample chamber includes an electrode disposed therein. The sample chamber receives therein a quantity of the cooking medium that is sufficient to immerse the electrode therein. The controller controls operations of the filter pump and controls the electrode to measure a property of the cooking medium that is associated with the quality of the cooking medium.
    Type: Application
    Filed: October 15, 2012
    Publication date: February 14, 2013
    Applicant: HENNY PENNY CORPORATION
    Inventor: HENRY PENNY CORPORATION
  • Patent number: 8340928
    Abstract: A capacitive sensor in its simplest form has three identical plated spatial electrodes, which are positioned equally spaced apart, in order, alignment and parallel with each other. The first and third electrodes are the outer electrodes and connected in parallel by a first lead wire serving as a first electrical pole to be a group of the integrated electrodes. The second electrode is the middle electrode and connected by a second lead wire serving as a second electrical pole. The sensor is applied with an alternating current (AC) excitation signal from an AC device. The present invention method includes application of referencing and sensing capacitive sensors to obtain a measured temperature compensated electrical property of the oil to thereby obtain a measured remaining usage so as to a predicted remaining usage of the oil.
    Type: Grant
    Filed: March 24, 2010
    Date of Patent: December 25, 2012
    Inventor: Yizhong Sun
  • Patent number: 8287182
    Abstract: A method for testing a measuring device is used to determine a permittivity of a frying fat which permittivity is inter alia dependent on the temperature, while taking into consideration the temperature. The method is characterized in that the permittivity is measured at least two different temperatures and the temperature dependence is determined and is used to make a statement on the ability to function of the measuring device.
    Type: Grant
    Filed: January 24, 2007
    Date of Patent: October 16, 2012
    Assignee: Testo AG
    Inventors: Mike Muhl, Juergen Hall, Markus Langenbacher
  • Patent number: 8248087
    Abstract: A liquid concentration measuring device has first and second switches, which are turned on and off at two frequencies. When the first switch is turned on and the second switch is turned off, a detection electrode pair is charged. When the first switch is turned off and the second switch is turned on, the positive side of the detection electrode pair is grounded so that the charged detection electrode pair discharges. The difference between the output voltages of an amplifier produced by charging and discharging the detection electrode pair at the two frequencies is used to determine an alcohol concentration in gasoline.
    Type: Grant
    Filed: March 18, 2009
    Date of Patent: August 21, 2012
    Assignee: Denso Corporation
    Inventors: Hirotsugu Ishino, Jun Tarui
  • Patent number: 8237454
    Abstract: Measuring device for local measurement of an electrical property of the content of a container, wherein at least three electrodes are disposed adjacently of each other in height direction and electrically insulated from each other, wherein each of the electrodes can be connected to an electrical measuring circuit for measuring, via one of the electrodes and one other electrode connected to an electrical earth, the electrical property of the content of the container in the vicinity of the electrodes, and wherein the electrical measuring circuit is adapted to generate at least one electric measuring signal representing the measured electrical property, and a control unit for connecting the one electrode to the electrical measuring circuit and connecting the other electrode to an electrical earth.
    Type: Grant
    Filed: December 5, 2008
    Date of Patent: August 7, 2012
    Assignee: Fluid Well Instruments B.V.
    Inventors: Marian Jozef Slezak, Cornelis Wijnand Schoenmakers
  • Patent number: 8149004
    Abstract: A corrosion sensor having a corrodible element that is corrodible in a lubricant or hydraulic oil, wherein the corrosion sensor is adapted to monitor degradation of the lubricant or hydraulic oil is disclosed.
    Type: Grant
    Filed: January 19, 2007
    Date of Patent: April 3, 2012
    Assignee: Honeywell International Inc.
    Inventors: Raghurama A. Raju, Sanjeeb Tripathy, Jicang Zhou
  • Patent number: 8147757
    Abstract: The present invention describes a system and method for accurately measuring the concentration of a substance within a filter housing. A concentration sensor and a communications device are coupled so as to be able to measure and transmit the concentration of a particular substance within the filter housing while in use. This system can comprise a single component, integrating both the communication device and the concentration sensor. Alternatively, the system can comprise separate sensor and transmitter components, in communication with one another. In yet another embodiment, a storage element can be added to the system, thereby allowing the device to store a set of concentration values. The use of this device is beneficial to many applications. For example, the ability to read concentration values in situ allows integrity tests to be performed without additional equipment.
    Type: Grant
    Filed: December 16, 2010
    Date of Patent: April 3, 2012
    Assignee: EMD Millipore Corporation
    Inventor: Anthony DiLeo
  • Patent number: 8137983
    Abstract: The present invention describes a system and method for accurately measuring the concentration of a substance within a filter housing. A concentration sensor and a communications device are coupled so as to be able to measure and transmit the concentration of a particular substance within the filter housing while in use. This system can comprise a single component, integrating both the communication device and the concentration sensor. Alternatively, the system can comprise separate sensor and transmitter components, in communication with one another. In yet another embodiment, a storage element can be added to the system, thereby allowing the device to store a set of concentration values. The use of this device is beneficial to many applications. For example, the ability to read concentration values in situ allows integrity tests to be performed without additional equipment.
    Type: Grant
    Filed: October 17, 2011
    Date of Patent: March 20, 2012
    Assignee: EMD Millipore Corporation
    Inventor: Anthony DiLeo
  • Patent number: 8084259
    Abstract: The present invention describes a system for accurately measuring the concentration of a substance within a filter housing. A concentration sensor and a communications device are coupled so as to measure and transmit the concentration of a particular substance within the filter housing while in use. This system allows the operator to certify the integrity of the filters within the filter housing at the customer site without additional equipment. In one embodiment, a tracer gas, such as helium or hydrogen, is added to a carrier and injected into the system. The concentration of tracer gas at a specific operating transmembrane pressure is indicative of bubble pointing specific pores in the filter. This test will give a more sensitive indication of the bubble point and the presence of defects than a standard diffusion test. In a second embodiment, two gasses, in a known ratio, are introduced into the filter housing.
    Type: Grant
    Filed: December 5, 2008
    Date of Patent: December 27, 2011
    Assignee: Millipore Corporation
    Inventor: Anthony DiLeo
  • Patent number: 8074493
    Abstract: The invention relates to a signaling magnetic plug for a liquid circuit, the plug including a first magnetic electrode and a second magnetic electrode for coming into contact with the liquid flowing in the liquid circuit when the magnetic plug is mounted so as to detect the presence of metal particles that might be contained in the liquid. According to the invention, the plug also includes a preferably non-magnetic intermediate electrode disposed between the first and second magnetic electrodes while also being designed to be in contact with the liquid flowing in the liquid circuit when the magnetic plug is mounted, whereby said plug enables the presence of such metal particles to be detected early.
    Type: Grant
    Filed: February 10, 2009
    Date of Patent: December 13, 2011
    Assignee: Turbomeca
    Inventors: Philippe Augros, Gérald Senger
  • Patent number: 8054091
    Abstract: A novel microfluidic device has been developed to measure stability of thin liquid films of water in oil emulsions using electrochemical perturbation of interfaces. This new device can be utilized in rapid classification of de-emulsifiers used in petroleum industries. Although water/crude oil emulsions have been the primary focus of this research, this measurement platform can be used in other industries such as food, cosmetics and bio-engineering (bilayer lipid membranes) as well as environmental remediation of oil spills. The compact design of the device and replacement of the mechanical measurements such as pressure with electrical signal measurements contributes in substantial size reduction of the experimental platform so that it can be employed for onsite measurements in remote areas.
    Type: Grant
    Filed: February 21, 2007
    Date of Patent: November 8, 2011
    Assignee: The Governors of the University of Alberta
    Inventors: Subir Bhattacharjee, Farshid Karimi Mostowfi, Jacob Masliyah, Jan Czarnecki, Elizeusz Lucjusz Musial
  • Publication number: 20110267080
    Abstract: The remote monitoring of oil samples is disclosed. Monitoring may be achieved through the use of a computer, phone, mobile device, or any other networked computing device in contact with a sensing element at the remote location. Such remote monitoring may be beneficial when equipment such as pumps, generators, engines, compressors, and transformers are located in remote locations that are not always easily accessible to maintenance personnel. Contact may be achieved using any number of wireless transmission techniques.
    Type: Application
    Filed: November 23, 2010
    Publication date: November 3, 2011
    Inventor: Joe D. Hedges
  • Patent number: 8007655
    Abstract: A method and system for determining chemical properties of a fluid. The method and system include providing a weak electrolyte fluid, a container for the fluid, a detection method performed by a device having at least two electrodes, a detection and amplification device coupled to the electrodes and a sensed current compared to an uncontaminated, base fluid or compared to data characteristic of fluid contaminated or chemically changed in order to monitor and characterize the fluid.
    Type: Grant
    Filed: July 24, 2007
    Date of Patent: August 30, 2011
    Assignee: Georgia Tech Research Corporation
    Inventors: Steven Danyluk, Francis Mess, Sergey Tereshko, Anatoly Zharin
  • Patent number: 7990161
    Abstract: Disclosed herein are an apparatus for measuring the total acid number of oil, an apparatus for measuring the lifetime of oil through the measurement of the total acid number of oil, a method for measuring the total acid number of oil, and a method of making measurements using an oil sensor. According to the disclosed invention, measurement accuracy can be increased through the use of a high-sensitivity conductance measuring sensor, the inventive apparatus can be applied to both lubricant oil and insulating oil, the size of the total acid number-measuring apparatus can be reduced.
    Type: Grant
    Filed: October 31, 2007
    Date of Patent: August 2, 2011
    Assignees: SNS Revolution Co., Ltd., Korea University Industrial & Academic Collaboration Foundation
    Inventors: Byeong Kwon Ju, Kyung Shin, Cheol Ho Yeo
  • Publication number: 20110169512
    Abstract: A method for measuring fuel contamination in oil that uses a material in contact with oil whereby fuel intrusion into the oil will change the electrical, mechanical, and/or chemical properties of the material as compared to the same electrical, mechanical, and/or chemical properties of the material when in contact only with mineral or synthetic oil only.
    Type: Application
    Filed: August 17, 2010
    Publication date: July 14, 2011
    Inventor: Joe D. Hedges
  • Patent number: 7940060
    Abstract: One embodiment of the invention includes a method comprising measuring the level of a fluid in a system in a vehicle comprising measuring an electrical property of the fluid indicative of the amount of air in the fluid and comparing the measured electrical property to a reference. The measured electrical property may include at least one of electrical resistivity or electrical permittivity. Another embodiment of the invention includes a method comprising measuring an electrical property of a fluid, measuring an electrical property of an air-free fluid sample, and determining a volume fraction of air in the fluid using the electrical property of the fluid and the electrical property of the air-free fluid sample, wherein the electrical property comprises at least one of electrical resistivity or electrical permittivity. In some embodiments an indication can be provided when the slope of the electrical property versus time changes.
    Type: Grant
    Filed: March 6, 2007
    Date of Patent: May 10, 2011
    Assignee: GM Global Technology Operations LLC
    Inventors: Ion C. Halalay, Eric W. Schneider
  • Patent number: 7928741
    Abstract: An embodiment of the present invention provides for a sensing element comprising a non-conductive housing with three chambers for detecting oil conductivity, additive depletion and oxidation, and water contamination, respectively. Through the monitoring of an array of oil sensors, an early warning of oil degradation due to oxidation is provided. The monitoring system further detects excess soot, water and other contaminants in the oil. The oil sensor array and related monitoring system decrease the likelihood of catastrophic engine failure through the early detection and warning of a decrease in oil quality thereby reducing vehicle owner outlays for servicing and disposal fees while further aiding in the satisfaction of environmental protection regulations.
    Type: Grant
    Filed: April 20, 2009
    Date of Patent: April 19, 2011
    Assignee: Voelker Senors, Inc.
    Inventors: Joe D. Hedges, Paul J. Voelker
  • Publication number: 20110074452
    Abstract: Provided are a device for evaluating a degree of degradation of a lubricating oil, a method of evaluating a degree of degradation of a lubricating oil, and an on-line lubricating oil management device, which are capable of measuring the degree of degradation of the lubricating oil in a simple and stable manner. The device for evaluating a degree of degradation of a lubricating oil, the method of evaluating a degree of degradation of a lubricating oil, and the on-line lubricating oil management device using the device and the method use a pH-ISFET, and make a determination as to a state of degradation of the lubricating oil through measurement of a change in hydrogen concentration of the lubricating oil by using, as an output, a change in current flowing between a drain and a source in a case where a constant voltage is applied between the drain and the source or a change in voltage between the drain and the source in a case where a constant current is caused to flow between the drain and the source.
    Type: Application
    Filed: March 3, 2009
    Publication date: March 31, 2011
    Applicant: Idemitsu Kosan Co., Ltd.
    Inventor: Tadashi Katafuchi
  • Patent number: 7834646
    Abstract: The invention relates to a device for measuring the quality and/or degradation of a fluid, especially an oil, comprising a sensor consisting of at least one pair of electrodes which are distanced from each other. Said sensor is immersed in the fluid which is to be measured. The electrodes and the fluid form a capacitive element whose capacity varies according to the dielectric constant of the fluid. The sensor can provide an electric output signal representing said dielectric constant. The inventive device also comprises processing means which receive the output signal and which can determine the degree of quality and/or degradation of the fluid on the basis of said output signal. The invention is characterized in that the electrodes extend substantially on the same plane and in that the fluid surrounds the two surfaces of the electrodes on both sides of said plane.
    Type: Grant
    Filed: February 11, 2009
    Date of Patent: November 16, 2010
    Assignees: Ecole Polytechnique Federale De Lausanne
    Inventors: Gerald Chambon, Martin Gijs
  • Patent number: 7830161
    Abstract: The invention relates particularly to methods and apparatuses for characterizing water-in-oil or invert emulsion fluids for use in drilling well bores in hydro-carbon bearing subterranean formations. A fluid stability measurement method is described. The method includes placing a sample of an emulsion in a gap between electrodes, disturbing the sample, measuring the electrical stability of the sample, and establishing a relationship between electrical stability and time since the sample was disturbed.
    Type: Grant
    Filed: August 15, 2008
    Date of Patent: November 9, 2010
    Assignee: Halliburton Energy Services Inc.
    Inventor: Robert Murphy
  • Publication number: 20100253371
    Abstract: A method and device for determining a fuel portion in a motor oil of a motor vehicle. The motor oil is brought between at least two electrodes forming a capacitor. The capacitance of the capacitor is determined while the motor oil is located between the electrodes, and the fuel portion in the motor oil is determined from the capacitance of the capacitor.
    Type: Application
    Filed: November 10, 2008
    Publication date: October 7, 2010
    Applicant: Continental Automotive GmbH
    Inventors: Rudolf Bierl, Philippe Grass, Jan Haag, Armin Hollstein, Denny Schädlich
  • Publication number: 20100250156
    Abstract: Electrical measures of resistivity and permittivity of engine lubricating oil are gathered continuously under normal vehicle engine operating conditions and combined into a composite parameter, the aggregated electrical measure, which, is indicative of engine oil condition and when plotted over the useful life of the oil displays a first linear slope anticipatory of the end of oil life followed by a second, steeper slope indicative of the end of oil life. An algorithm, implementable in an on-vehicle computer, to reliably detect these features is described.
    Type: Application
    Filed: March 27, 2009
    Publication date: September 30, 2010
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
    Inventors: ION C. HALALAY, ERIC W. SCHNEIDER
  • Patent number: 7800379
    Abstract: A sensing apparatus for determining a property of a fuel such as a gasoline and ethanol blend known as flex fuel includes an acetal plastic tube with an inlet, an outlet and a fuel passage in between. One property of the fuel is a dielectric constant. A pair of sensing plates are placed on opposite sides of the tube leaving the fuel passage unobstructed. A processing circuit on a printed circuit board (PCB) is located near to and is connected with the sensing plates. The circuit applies an excitation signal, senses a capacitance, and generates an output signal indicative of a property of the fuel. The sensed capacitance will increase with increasing concentration of ethanol in the fuel flowing through the passage. A shield for reducing EMI surrounds and encloses the sensing plates and the PCB. An interface connector allows the sensing apparatus to output the capacitance indicative signal to an engine controller or the like.
    Type: Grant
    Filed: December 2, 2008
    Date of Patent: September 21, 2010
    Assignee: Delphi Technologies, Inc.
    Inventors: Norberto Hernandez, Jesus Carmona, Esau Aguinaga, Manuel S. Sanchez, Cecilia Hernandez, Daniel J. Moreno, Mark Shost
  • Publication number: 20100188111
    Abstract: A sensor, a system of direct measurement using that sensor, and a method of direct and simultaneous measurement of conductivity and dielectric constant of a fluid, particularly high impedance, hydrocarbon-based fluids. The sensor has a cell that holds the fluids to be measured between a single pair of coaxial, bare metal electrodes connected through interface circuitry to measurement circuitry preferably implemented in one or several IC's. The sensor has a mutually compatible electrode geometry that provides both the correct cell constant for measurement of conductivity of hydrocarbons fluids (typical range 0-100,000 pS/cm), and a bulk capacitance (for use in dielectric constant measurement) in the range of measure of readily available low cost commercial IC's (having a typical capacitance measurement span of <10 pF, with a total bulk capacitance at the chip of <20 pF).
    Type: Application
    Filed: January 29, 2010
    Publication date: July 29, 2010
    Applicant: D-2, Inc.
    Inventor: Alan J. Fougere