Solid Content Of Gas Patents (Class 73/28.01)
  • Patent number: 8316692
    Abstract: A particle monitor (1) including a module (3) for measuring a particle content of a sample, the module including an analysis chamber (4) for receipt of the sample and a heating unit (24) for maintaining an operating temperature of the chamber (4) and for heating the air used for purging the sample from the chamber (4). The invention also relates to a particle monitor (1) with a vibrator assembly (6) and to a particle monitor (1) with a valve assembly (8) for effecting a fast purge mode, for clearing a sample tube (5), and a slow purge mode.
    Type: Grant
    Filed: April 19, 2007
    Date of Patent: November 27, 2012
    Assignee: Scantech International Pty Ltd.
    Inventors: Kenneth Graham Smith, Mark Triggs
  • Patent number: 8312759
    Abstract: Systems and methods for collecting portions of a target sample are disclosed herein. A method for detecting the presence and/or properties of a target sample can include selectively collecting a portion of a target sample with a sample collector and detecting, with the sample collector, the presence of one or more properties of the microscopic portion of the target sample. The method also includes analyzing, with the sample collector, the one or more properties of the microscopic portion of the target sample. Based on the analysis, the method further includes reporting, from the sample collector, a real-time indication of the analysis of the one or more properties of the target sample. The method can also include at least partially removing the microscopic portion of the target sample from the sample collector.
    Type: Grant
    Filed: February 14, 2011
    Date of Patent: November 20, 2012
    Assignee: McAlister Technologies, LLC
    Inventor: Roy Edward McAlister
  • Patent number: 8303697
    Abstract: A method for purifying polluted air having particle phase pollutants and gaseous phase pollutants is provided. The method comprising: separately purifying and treating particle phase and gaseous phase pollutants present in the air; providing a dust cleaning apparatus, a catalytic filter core and a valve for controlling an airflow path within an air purification apparatus; controlling the airflow path for the air to bypass the catalytic filter core in a way that: if the amount of particle phase pollutants is above a predetermined value, the valve is moved to the open position to enable the air to bypass the catalyst filtering core; if the amount of particle phase pollutants is less than a predetermined value, the valve is moved to the closed position to force the air to pass through the catalyst filtering core.
    Type: Grant
    Filed: May 23, 2012
    Date of Patent: November 6, 2012
    Assignee: Akos Advanced Technology Ltd.
    Inventors: Yiu Wai Chan, Sui Chun Law
  • Patent number: 8302460
    Abstract: The present invention provides a mass loading monitor for measuring in real time the particulate, i.e., powder, dust and the like, content of air inside an industrial or commercial processing facility and providing a warning signal indicating the existence of a potentially explosive atmosphere in the facility. In a first embodiment, the mass loading monitor comprises two parallel cylinders, one of which is charged with clean, ambient air and the other of which is charged with air from within the facility containing dust, powder or other particulate matter. A piston resides within each cylinder and the pistons are commonly accelerated for a short distance during which time the pressure at each piston face is measured. The time integrals of the pressures from each of the piston faces are evaluated over the period: from rest to the time of discharge from the open end of the cylinders. The ratio of these integrals defines the difference in the densities within the cylinders.
    Type: Grant
    Filed: November 2, 2009
    Date of Patent: November 6, 2012
    Assignee: Board of Trustees of Michigan State University
    Inventors: John F. Foss, Alan R. Lawrenz
  • Patent number: 8294587
    Abstract: A smoke detector has a housing, a smoke sensor in the housing capable of detecting smoke therein, and an alarm connected to the sensor signaling when the smoke sensor detects smoke. A partition subdivides the housing into separate first and second chambers, and the housing is formed with first and second smoke holes allowing air from the exterior into the first and second chambers. The partition has a sensor port provided with a sensor for detecting air flow through the sensor port and a fan port having a fan for drawing air from one of the chambers and forcing it into the other chamber. A controller connected to the fan and to the air-flow sensor operates the fan means to move air from the one chamber through the fan port into the other chamber and generates an output when air flow through the sensor port exceeds a predetermined limit.
    Type: Grant
    Filed: June 1, 2010
    Date of Patent: October 23, 2012
    Assignee: ista International GmbH
    Inventors: Michael Danz, Sebastian Schnepel, Gerhard Niederfeld
  • Patent number: 8278907
    Abstract: A particulate matter detection device including a detection device main body which has one end provided with a through hole a pair of electrodes embedded in a wall through which the through hole is formed, and covered with a dielectric material; wires extending from the electrodes to the other end of the main body; and a ground electrode provided at a position sandwiched between the wires. The device can electrically adsorb, on the wall surface of the through hole, a charged particle in a fluid flowing into the through hole, or a particle charged by electric discharge caused in the through hole by applying a voltage across the pair of electrodes. The device can measure the changes of the electric properties of the wall through which the through hole is formed, thereby detecting particles adsorbed on the wall surface of the through hole.
    Type: Grant
    Filed: September 15, 2009
    Date of Patent: October 2, 2012
    Assignee: NGK Insulators, Ltd.
    Inventors: Takeshi Sakuma, Atsuo Kondo, Takashi Egami
  • Patent number: 8250903
    Abstract: Provided are devices and methods for the collection of bioaerosols (such as viruses, bacteria, and proteins) from the exhaled breath of humans and/or animals, for the purpose of determining, for example, particle size, generation rate, diseases and interventions for particle release.
    Type: Grant
    Filed: March 23, 2010
    Date of Patent: August 28, 2012
    Assignees: President and Fellows of Harvard College, University of Massachusetts
    Inventors: James McDevitt, Donald Milton, Petros Koutrakis, Stephen T. Ferguson, Jack M. Wolfson
  • Patent number: 8230721
    Abstract: A particulate matter detection device (100) includes a detection device body (1) extending in one direction and having at least one through-hole (2) that is formed at one end (1a), at least one pair of electrodes buried in the wall of the body (1) that defines the through-hole (2), and covered with a dielectric, lines respectively extending from the pair of electrodes toward the other end (1b), a takeout lead terminal (12a) of one electrode of the pair of electrodes disposed on the surface of the other end (1b), a takeout lead terminal (11a) of the other electrode of the pair of electrodes between one end (1a) and the other end (1b), and an electric wire (21) provided with an electric wire securing member (31) at its tip portion, and bonded to the takeout lead terminal (11a) through the electric wire securing member (31).
    Type: Grant
    Filed: March 2, 2010
    Date of Patent: July 31, 2012
    Assignee: NGK Insulators, Ltd.
    Inventors: Masahiro Tokuda, Takashi Egami, Takeshi Sakuma, Atsuo Kondo
  • Patent number: 8225640
    Abstract: A soot sensor and method for detecting soot is provided. In one exemplary embodiment, a sensing element for a soot sensor is disclosed herein, the sensing element having a pair of peripheral edge sensing electrodes each having a portion disposed on a peripheral edge of a non-conductive substrate of the sensing element; a first pair of side sensing electrodes disposed on a first side of the sensing element, the first side having a first area partially bounded by the peripheral edge, wherein a resistance between the pair of peripheral edge sensing electrodes decreases as soot accumulates on portions of the pair of peripheral edge sensing electrodes and a resistance between the first pair of side sensing electrodes decreases as soot accumulates on portions of the first pair of side sensing electrodes.
    Type: Grant
    Filed: December 11, 2008
    Date of Patent: July 24, 2012
    Assignee: Delphi Technologies, Inc.
    Inventors: Charles Scott Nelson, Raymond L. Bloink, Wayne A. Patterson
  • Patent number: 8210028
    Abstract: A method and apparatus for the extraction of particles from surfaces is disclosed. A preferred method comprises the steps of (1) adjusting the temperature and humidity of an air supply to provide an adjusted air supply, (2) directing a blast from the adjusted air supply to a surface bearing particles, so as to produce a deflected blast that comprises some of the particles from the surface, (3) collecting the deflected blast and particles, and (4) directing the deflected blast and particles towards an analyzer. A preferred apparatus includes an air adjuster and a probe comprising an adjusted air supply passage, an adjusted air aperture, a deflected air aperture, and a deflected air passage, wherein the air adjuster is adapted to provide a flow of adjusted air to the adjusted air supply passage and the adjusted air aperture.
    Type: Grant
    Filed: October 8, 2008
    Date of Patent: July 3, 2012
    Inventors: Robert R. Moore, David Blessing
  • Patent number: 8211208
    Abstract: A method for purifying polluted air having particle phase pollutants and gaseous phase pollutants is provided. The method comprising: separately purifying and treating particle phase and gaseous phase pollutants present in the air; providing a dust cleaning apparatus, a catalytic filter core and a valve for controlling an airflow path within an air purification apparatus; controlling the airflow path for the air to bypass the catalytic filter core in a way that: if the amount of particle phase pollutants is above a predetermined value, the valve is moved to the open position to enable the air to bypass the catalyst filtering core; if the amount of particle phase pollutants is less than a predetermined value, the valve is moved to the closed position to force the air to pass through the catalyst filtering core.
    Type: Grant
    Filed: September 26, 2011
    Date of Patent: July 3, 2012
    Assignee: Akos Advanced Technology Ltd.
    Inventors: Yiu Wai Chan, Sui Chun Law
  • Patent number: 8206651
    Abstract: The illustrative embodiment of the present invention is a system and a method for the detection and limited identification of biological agents. The system is small, light weight, requires little power to operate and uses few consumables. The system can be configured for use in either stationary or mobile applications. The system incorporates elements that enable it to obtain an air sample, extract particulates from the air sample, exposes the particulates to electromagnetic radiation, and monitor for fluorescent emissions. To the extent that fluorescent emissions are detected and exceed a predetermined value, an alarm is triggered.
    Type: Grant
    Filed: July 15, 2004
    Date of Patent: June 26, 2012
    Assignee: Lockheed Martin Corporation
    Inventors: Scott M. Maurer, Ryan C. Brewer, Larry D. Jackson, Kevin J. Kofler, Mark J. Derksen
  • Patent number: 8194234
    Abstract: Turbulent mixing condensation devices, methods, and systems adapted to condense a working fluid on particles from a sample gas to enlarge the particles for subsequent detection are provided. The device includes a vapor generator adapted to produce a working-fluid saturated carrier gas and a condensation chamber. The working-fluid saturated carrier gas is mixed with a sample gas containing particles to be detected and is then introduced to the condensation chamber. The operating conditions are controlled to enhance the condensation of the working fluid on the particles. The particles are typically forwarded to a particle detection device to detect at least one characteristic, for example, the size, of the particles. The flow of carrier gas to the vapor generator may be regulated to vary the degree of saturation of the carrier gas with working fluid.
    Type: Grant
    Filed: June 28, 2010
    Date of Patent: June 5, 2012
    Assignee: Thermo Fisher Scientific Inc.
    Inventors: Philip Karl Hopke, Jeffrey Lawrence Ambs
  • Publication number: 20120131989
    Abstract: Sizes or size distribution of aerosol particles of an aerosol gas stream is detected. A particle-free carrier flow is saturated in a saturator by a first condensing medium, after which, the carrier flow is mixed in a mixing section turbulently with aerosol particle flow. Advantageously, a plurality of separate mixtures with different saturation ratios are provided and introduced to the first condensing environment in order to condensate the condensing medium onto the aerosol particles. Depending on the saturation ratio, the particles with different lowest original size are activated and grown in a growing section and/or in the condensing environment. After activation and growing, the particles are detected by a detecting means.
    Type: Application
    Filed: June 3, 2010
    Publication date: May 31, 2012
    Inventors: Joonas Vanhanen, Markku Kulmala, Jyri Mikkilä, Erkki Siivola, Mikko Sipilä
  • Patent number: 8181504
    Abstract: A smoke evaluation device includes a manifold in fluid communication with a source of smoke, and a first sampling line and a second sampling line in fluid communication with the manifold. The first sampling line and the second sampling line are arranged to convey parallel smoke flows. A first filter station is located in the first sampling line, and is adapted to support a filter paper in fluid communication with the smoke. A first circuit board station is located in the second sampling line, and is adapted to support a circuit board in fluid communication with the smoke.
    Type: Grant
    Filed: February 18, 2009
    Date of Patent: May 22, 2012
    Assignee: Factory Mutual Insurance Company
    Inventor: Archibald Tewarson
  • Publication number: 20120103061
    Abstract: The present invention is a transportable portal for screening a target, which may be a person, standing or placed inside the portal. It employs two walls with air ducts in the walls, usually two ducts per wall running from the bottom to the top of each wall, and having a number of air intakes spaced along the height of the wall. A blower module blows air downward on the target to dislodge particles and vapor, which are drawn in the air ducts and analyzed by a detection module. Each detection module may have a pre-concentrator with a nano-platinum surface for collecting and pyrolyzing samples, and chemical, optical and radiation detectors for detecting illicit materials. The portal may be disassembled or reassembled by two people using hand tools in less than one hour and then placed in a space of less than one cubic metre for transport.
    Type: Application
    Filed: October 28, 2011
    Publication date: May 3, 2012
    Inventor: Sabatino Nacson
  • Publication number: 20120096924
    Abstract: A new installment classifies particles by their aerodynamic size This installment produces a truly monodisperse aerosol, and can produce very narrow distributions over a wide range of sizes Particles suspended in a fluid are classified by supplying particles into suspension in a carrier flow of a fluid and providing an acceleration to the flow at an angle to the velocity of the flow to cause the particles to follow trajectories determined by the acceleration and drag on the particles caused by the fluid The particles are then classified according to their trajectories The installment has a flow channel and a source of particles to supply particles into suspension in a carrier fluid in the flow channel A drive is connected to the flow channel at an angle to the flow of fluid through the carrier flow channel, and a classification system classifies the suspended particles according to their trajectories
    Type: Application
    Filed: July 2, 2010
    Publication date: April 26, 2012
    Applicant: THE GOVERNORS OF THE UNIVERSITY OF ALBERTA
    Inventor: Jason Olfert
  • Patent number: 8161796
    Abstract: An electrode assembly for a particulate matter sensor in a gas environment. The electrode assembly includes an insulating tube, a conductor, and a positioning structure. The insulating tube has an outer surface and defines an interior cavity with an interior surface. The conductor is disposed within the interior cavity of the insulating tube. The conductor is electrically coupled to an electrode at a first end of the insulating tube and includes a contact portion at a second end of the insulating tube for connection to an external conductor. The positioning structure is coupled to the conductor. The positioning structure mechanically supports the conductor at a distance from the interior surface of the insulating tube to at least partially define an air dielectric gap at approximately a heater location corresponding to a heater.
    Type: Grant
    Filed: April 16, 2009
    Date of Patent: April 24, 2012
    Assignee: EmiSense Technologies LLC
    Inventors: Balakrishnan G. Nair, Brett Tamatea Henderson
  • Patent number: 8151626
    Abstract: Sensor apparatus includes a housing, a probe mounted to the housing, the probe including an elongate first part and a helical coil second part conductively coupled to each in series with first and second terminals at opposite ends thereof, the probe to be inserted into an exhaust stream in an exhaust corridor; and a circuit coupled to the first and second terminals of the sensor probe, to selectively operate the probe as a temperature sensor in a first mode and as a PM sensor in a second mode.
    Type: Grant
    Filed: November 5, 2008
    Date of Patent: April 10, 2012
    Assignee: Honeywell International Inc.
    Inventors: Brian C. Krafthefer, Gregory E. Stewart, Jeff Boehler, Matthew Below, Michael L. Rhodes
  • Publication number: 20120079871
    Abstract: An apparatus and methods for detecting the presence of gases is described. The gas detection apparatus includes, a housing adapted to be in fluid communication with a duct of a particle detection system, and at least one gas detector sensitive to a target species arranged in fluid communication with the housing to detect the presence of the target species in at least part of the air sample flowing in a duct. In one form the gas detection apparatus forms part of a system for detecting a condition in an environment that includes, a particle detector; a duct system in fluid communication with the environment and the particle detector and an aspirator to draw an air sample flow from the environment to the particle detector.
    Type: Application
    Filed: June 3, 2010
    Publication date: April 5, 2012
    Applicant: Xtralis Technologies Ltd.
    Inventor: Alasdair James Williamson
  • Patent number: 8136343
    Abstract: A system for improving operation of an engine having a particulate matter sensor is presented. The system may be used to improve engine operation during cold starts especially under conditions where water vapor or entrained water droplets are present in vehicle exhaust gases. In one embodiment, an engine controller that activates a heater of an exhaust gas sensor after an output of a particulate matter sensor exceeds a threshold value after an engine is started.
    Type: Grant
    Filed: December 21, 2009
    Date of Patent: March 20, 2012
    Assignee: Ford Global Technologies, LLC
    Inventors: Garry Anthony Zawacki, Robert F. Novak, Roberto Teran, Jr., Dave Charles Weber, Michiel J. Van Nieuwstadt, Michael Hopka, William Charles Ruona
  • Publication number: 20120031169
    Abstract: A sensor controller is applied to a particulate matter detection sensor that includes an attachment portion to which conductive particulate matter contained in gas is attached, and a pair of opposed electrodes spaced from each other at the attachment portion. The particulate matter detection sensor is adapted to output a detection signal corresponding to a resistance between the pair of opposed electrodes, and the sensor controller is adapted to calculate an amount of attached particulate matter based on a sensor detection value from the particulate matter detection sensor. The sensor controller includes a heater for heating the attachment portion so as to burn and remove the particulate matter attached to the attachment portion, and an abnormality diagnosis portion for obtaining the sensor detection value during a heating of the heater and for performing diagnosis of abnormality of the particulate matter detection sensor based on the obtained sensor detection value.
    Type: Application
    Filed: July 15, 2011
    Publication date: February 9, 2012
    Applicant: DENSO CORPORATION
    Inventors: Yuuki Sakamoto, Mikiyasu Matsuoka, Yuuzou Matsumoto
  • Patent number: 8106785
    Abstract: To enable an air velocity of sampling air to be precisely measured, a smoke detector (S) includes: a smoke detection part (22) connected to a sampling pipe (11); a fan (12) that sucks sampling air (SA) into the sampling pipe; and an air velocity sensor (15) that measures an air velocity of the sampling air within the sampling pipe. The air velocity sensor (15) is disposed at a primary side of the fan (12), and a straightening vane (25) is disposed between the air velocity sensor (15) and a suction port (12a) of the fan (12).
    Type: Grant
    Filed: April 19, 2011
    Date of Patent: January 31, 2012
    Assignee: Nohmi Bosai Ltd.
    Inventor: Hiroyuki Yokota
  • Patent number: 8098166
    Abstract: An aspirated smoke detector includes a smoke sensor, an aspirator and variable speed control circuits. As the concentration of smoke increases, the speed control circuits can increase aspirator speed from a first, nominal value to a second, higher value.
    Type: Grant
    Filed: April 23, 2009
    Date of Patent: January 17, 2012
    Assignee: Honeywell International Inc.
    Inventor: Scott Lang
  • Publication number: 20110314902
    Abstract: The invention relates to novel methods and to devices for a measuring and analysis apparatus that measures impurities and/or particles in a gas or air. In a particle separation step, target particles having predetermined particle properties are separated from remaining particles from a gas or gas mixture such as air or a liquid, in short a fluid, that contains a particle mixture, and the occurrence and/or frequency of said target particles is determined in a measuring chamber. The likewise novel cooling of the radiation sources required for measurement permits the use of such having high power, as is required for measuring few particles or the smallest impurities. A further novel expansion of the electrical measurement range allows small but also abundant particles and impurities to be measured. In addition, a novel interface simplifies the start-up of the apparatus.
    Type: Application
    Filed: March 3, 2010
    Publication date: December 29, 2011
    Applicant: MAXDE TEC AG
    Inventor: Markus Dantler
  • Publication number: 20110308620
    Abstract: Collection enhanced materials, flue gas additives, and methods of making the enhanced materials and flue gas additives are provided. In one embodiment, a down stream addition system configured to control material passing through a metering device from a vessel to a gaseous exhaust path extending between a unit and an exhaust flue of the unit is provided. In alternative embodiments, methods are provided for introducing at least one of a flue gas additive and a collection enhanced material to a gaseous exhaust stream exiting a unit; exposing and removing at least a portion of at least one a of flue gas additive and a collection enhanced material from a gaseous exhaust stream exiting a unit prior to entering an exhaust flue; and recycling at least a portion of material removed a from a gaseous exhaust stream exiting a unit back to the gaseous exhaust stream without passing through the unit.
    Type: Application
    Filed: May 25, 2011
    Publication date: December 22, 2011
    Applicant: Intercat, Inc.
    Inventors: Martin Evans, Raymond Fletcher, Mehdi Allahverdi, Guido Aru, Paul Diddams, Xunhua Mo, William Reagan, Shanthakumar Sithambaram
  • Patent number: 8077018
    Abstract: To enable an air velocity of sampling air to be precisely measured, a smoke detector (S) includes: a smoke detection part (22) connected to a sampling pipe (11); a fan (12) that sucks sampling air (SA) into the sampling pipe; and an air velocity sensor (15) that measures an air velocity of the sampling air within the sampling pipe. The air velocity sensor (15) is disposed at a primary side of the fan (12), and a straightening vane (25) is disposed between the air velocity sensor (15) and a suction port (12a) of the fan (12).
    Type: Grant
    Filed: April 19, 2011
    Date of Patent: December 13, 2011
    Assignee: Nohmi Bosai Ltd.
    Inventor: Hiroyuki Yokota
  • Patent number: 8071938
    Abstract: Systems, methods and computer program products for the multi-modal detection of particles are described herein. An embodiment of the present invention is a particle detector that includes a first chamber wherein analyte particles are subjected to a first particle detection mechanism, and a second chamber coupled to the first chamber, wherein the analyte particles are subjected to a second particle detection mechanism, and wherein the detection characteristics of second particle detection mechanism are orthogonal to detection characteristics of the first particle detection mechanism.
    Type: Grant
    Filed: March 20, 2008
    Date of Patent: December 6, 2011
    Assignee: The Mitre Corporation
    Inventor: Samar K. Guharay
  • Publication number: 20110271739
    Abstract: A particulate monitoring system includes a conduit in which to a pass a fluid sample from an input port to an output port. The particulate monitoring system receives a fluid sample inputted to the conduit through the input port. The fluid sample can include different sizes of particulate matter. The particulate monitoring system controls a flow of the fluid sample through the conduit to age the particulate matter. Gravitational forces cause a portion of the particulate matter in the fluid sample to fall into a basin as opposed to being exhausted through the output port, which is disposed at a vertically higher level of the conduit than the input port. Thus, the particulate monitoring system outputs a portion of the original particulate matter in the fluid sample (e.g., particulate matter that does not drop into the basin out due to gravity) for analysis.
    Type: Application
    Filed: May 9, 2011
    Publication date: November 10, 2011
    Inventors: Kevin J. Goohs, Jeffrey Socha
  • Patent number: 8047054
    Abstract: Exemplary embodiments of the present invention relate to methods and devices for monitoring the flow of particulate matter within an exhaust gas stream. In one exemplary embodiment, a particulate matter sensor for an exhaust system of an engine is provided. The particulate matter sensor includes a casing having an attachment feature for mounting the particulate matter sensor to the exhaust system. The particulate matter sensor also includes an insulator disposed within the casing. The particulate matter sensor further includes a sensing rod having a hollow portion extending between a first end and a second end of the sensing rod. The first end of the sensing rod is supported by the insulator and the second end of the sensing rod extending away from the insulator. The particulate matter sensor still further includes an electrical connector assembly engaging the first end of the sensing rod. The electrical connector assembly is configured to transmit a signal generated by the sensing rod.
    Type: Grant
    Filed: July 23, 2009
    Date of Patent: November 1, 2011
    Assignee: Fram Group IP LLC
    Inventor: Matthew B. Below
  • Patent number: 8047053
    Abstract: Various screening systems are disclosed, including a system including a radiation detection component, a toxic chemical detection component, a toxic chemical agent sampling component, a bio-threat detection component, a puffer-based bio-threat sampling component, an explosive detection component, and an X-ray based imager, such that it automatically screens mail for the presence of multiple threat agents, such as chemical, biological, radiological, nuclear and explosive threats. An automated sample arm collects a sample when a sampling substrate contacts a portion of the item of mail while there is relative motion between the automated sample arm and the item of mail. The sample is conveyed to a detector and the sampling substrate is regenerated by heating it.
    Type: Grant
    Filed: May 9, 2008
    Date of Patent: November 1, 2011
    Assignee: ICX Technologies, Inc.
    Inventors: Charles J. Call, Carl Chipman, Greg Frye-Mason, Riney Bennett
  • Patent number: 8047055
    Abstract: A system for measuring size segregated mass concentration of an aerosol. The system includes an electromagnetic radiation source with beam-shaping optics for generation of a beam of electromagnetic radiation, an inlet sample conditioner with adjustable cut-size that selects particles of a specific size range, and an inlet nozzle for passage of an aerosol flow stream. The aerosol flow stream contains particles intersecting the beam of electromagnetic radiation to define an interrogation volume, and scatters the electromagnetic radiation from the interrogation volume. The system also includes a detector for detection of the scattered electromagnetic radiation an integrated signal conditioner coupled to the detector and generating a photometric output, and a processor coupled with the conditioner for conversion of the photometric output and cut-size to a size segregated mass distribution.
    Type: Grant
    Filed: February 12, 2010
    Date of Patent: November 1, 2011
    Assignee: TSI, Incorporated
    Inventors: Xiaoliang Wang, Jugal K. Agarwal, George John Chancellor, James Evanstad, Anthony E. Hase, Sreenath Avula, James E. Farnsworth, David A. Lieder
  • Publication number: 20110259082
    Abstract: The invention refers to a method and capacitive sensor for counting aerosol nanoparticles in an electric way. Aerosol particles, onto which a fluid was applied in an earlier process by known methods, change the capacitance of the dielectric of the capacitor when entering its field, which causes an electric signal. The method provides for detection of aerosol particles in a wide scope of their presence in the air and is not specific for any shape or chemical composition of nanoparticles.
    Type: Application
    Filed: October 8, 2009
    Publication date: October 27, 2011
    Inventors: Maja Remskar, Ivan Iskra, Marko Virsek, Mark Plesko, Damjan Golob
  • Patent number: 8037738
    Abstract: Exemplary embodiments of the present invention relate methods and devices for measuring flow rate of particulate matter within an exhaust gas stream. In one particular exemplary embodiment, a sensor for detecting and monitoring particulate matter within an exhaust flow path of an engine is provided. The sensor includes a housing having an attachment for mounting the sensor. The sensor also includes a sensing rod supported by an insulating base. The sensing rod is attached to the housing and includes a probe adapted to be placed within the exhaust flow path. The probe includes a section having an increased surface area per unit length as compared to at least one other section of the probe. The sensing rod is configured to detect particulate matter flowing through the exhaust component and generates a signal based thereupon. The sensor further includes an electrical connector in communication with the sensing rod.
    Type: Grant
    Filed: May 18, 2009
    Date of Patent: October 18, 2011
    Assignee: Fram Group IP LLC
    Inventors: Jeffrey Boehler, Matthew B. Below, Palani Thanigachalam, Ashutosh Kumar Pandey, Jim Cook, Tim Erickson, Steven Magee, Mike Rhodes
  • Patent number: 8038778
    Abstract: An apparatus (10) for purifying polluted air consisting of particle phase pollutants and gaseous phase pollutants, the apparatus (10) comprising: a dust level sensor (23) to measure the amount of particle phase pollutants in the polluted air; a dust removal component (14) to remove the particle phase pollutants from the polluted air; a catalyst filtering core (17) to decompose the gaseous phase pollutants by chemical reaction; a valve (22) for selectively controlling a path of air flow within the apparatus (10) and is movable between an open position and closed position, the valve (22) being positioned downstream from the dust removal component (14); wherein if the amount of particle phase pollutants measured by the dust level sensor (23) is above a predetermined value, the valve (22) is moved to the open position to enable the air to bypass the catalyst filtering core (17); and if the amount of particle phase pollutants measured by the dust level sensor (23) is less than a predetermined value, the valve (22)
    Type: Grant
    Filed: February 3, 2009
    Date of Patent: October 18, 2011
    Assignee: Akos Advanced Technology Ltd.
    Inventors: Yiu Wai Chan, Sui Chun Law
  • Patent number: 8033159
    Abstract: The invention relates to a sensor and a method for detecting soot, said method comprising the following steps: a first operating temperature is set on the sensor for a measuring phase, such that soot can be deposited on the surface of the substrate, but depositions interfering with the measurement of the soot are prevented; the time between the beginning of the measurement and the increase in conductivity between the electrodes is recorded; and a second operating temperature is set on the sensor for a regeneration phase, such that the deposited soot is burned with the oxygen in the test gas. The inventive product is a soot sensor for using in the automobile industry.
    Type: Grant
    Filed: June 27, 2006
    Date of Patent: October 11, 2011
    Assignee: Siemens VDO Automotive AG
    Inventors: Maximilian Fleischer, Roland Pohle, Kerstin Wiesner
  • Patent number: 8033158
    Abstract: Systems and methods for the detection of substances (particularly particulate substances) within mail pieces, specifically letters and other “flats” of mail. In particular, the systems and methods are for the detection of residues of Chemical or Biological Warfare Agents (CBWAs) which may be present within the mail pieces. The system is principally designed to be included as part of Dual Pass Rough Cull System (DPRCS) for the collection and detection of the residue when the contaminated mail piece first enters a mail facility and before it is intermingled with other mail pieces. The system also utilizes aerosol chambers using at least two arrays of pinch rollers to provide for decreased incremental changes on mail pieces and decrease the likelihood of mail piece damage.
    Type: Grant
    Filed: December 12, 2007
    Date of Patent: October 11, 2011
    Assignee: DRS Sustainment Systems, Inc.
    Inventors: James J. Strohmeyer, William Blumfelder, John Tehan, Dennis Osterhorn, Joseph Matteoni, William J. Nelgner, Brian Lybarger, David Schenken, James Wagy
  • Patent number: 8021469
    Abstract: A control system and associated methods for an air treatment system. In one aspect, the present invention provides a control system and method for controlling blower speed as a function of separately determined smoke and dust concentrations. In one embodiment, the control system and method provides a variable delayed between changes in motor speed to address undesirable rapid changes between speeds. In another aspect, the present invention provides a system and method for calibrating a sensor to provide more uniform operation over time. In yet another aspect, the present invention provide a system and method for calibrating motor speed to provide more consistent and uniform motor speed over time. The present invention also provides a system and method for tracking filter life by as a function of time, motor speed and/or a sensed variable, such as particulate concentration in the environment.
    Type: Grant
    Filed: July 12, 2006
    Date of Patent: September 20, 2011
    Assignee: Access Business Group International LLC
    Inventors: Thomas A. Niezgoda, Thomas J. Leppien, Gregory K. Evans
  • Publication number: 20110214483
    Abstract: Systems and methods for the detection of substances (particularly particulate substances) within mail pieces, specifically letters and other “flats” of mail. In particular, the systems and methods are for the detection of residues of Chemical or Biological Warfare Agents (CBWAs) which may be present within the mail pieces. The system is principally designed to be included as part of Dual Pass Rough Cull System (DPRCS) for the collection and detection of the residue when the contaminated mail piece first enters a mail facility and before it is intermingled with other mail pieces. The system also utilizes aerosol chambers using at least two arrays of pinch rollers to provide for decreased incremental changes on mail pieces and decrease the likelihood of mail piece damage.
    Type: Application
    Filed: December 12, 2007
    Publication date: September 8, 2011
    Inventors: James J. Strohmeyer, William Blumfelder, John Tehan, Dennis Osterhorn, Joseph Matteoni, William J. Nelgner, Brian Lybarger, David Schenken, James Wagy
  • Publication number: 20110203350
    Abstract: The present invention discloses a method and device for measuring dust concentration in flowing gas, particularly atmospheric air. Aerodynamic forces continuously position the intake nozzle (2) along the direction of gas flow. The velocity of the measuring stream in the inlet of the intake nozzle (2) is compared with velocity of gas flowing around the intake nozzle (2) and the possible difference is compensated by changing the velocity of the measuring stream in mechanical way.
    Type: Application
    Filed: November 6, 2008
    Publication date: August 25, 2011
    Inventor: Stanislaw Kaminski
  • Patent number: 7998731
    Abstract: The present invention relates to a collection device for a substance, and methods related to collecting thereof.
    Type: Grant
    Filed: March 17, 2003
    Date of Patent: August 16, 2011
    Assignee: General Dynamics Advanced Information Systems, Inc.
    Inventors: Charles Daitch, Roger Reynolds, Stephen C. Francesconi, Bouvard Hosticka, Kathy Terlesky, Eric J. Van Gieson
  • Patent number: 7998417
    Abstract: An apparatus to detect particulate matter. The apparatus includes a sensor electrode, a shroud, and a heater. The electrode measures a chemical composition within an exhaust stream. The shroud surrounds at least a portion of the sensor electrode, exclusive of a distal end of the sensor electrode exposed to the exhaust stream. The shroud defines an air gap between the sensor electrode and the shroud and an opening toward the distal end of the sensor electrode. The heater is mounted relative to the sensor electrode. The heater burns off particulate matter in the air gap between the sensor electrode and the shroud.
    Type: Grant
    Filed: August 22, 2008
    Date of Patent: August 16, 2011
    Assignee: Board of Regents, University of Texas System
    Inventor: Matthew Hall
  • Publication number: 20110181288
    Abstract: A detector system with a portal including a plurality of output ports that direct a plurality of output airstreams in an essentially horizontal direction, and a plurality of intake ports that pull in air. The system also includes at least one concentrator coupled to at least one of the intake ports, and a detector coupled to the concentrator. The horizontally oriented output airstreams and multiple intake ports provide a system that can rapidly screen multiple people for explosives and other substances.
    Type: Application
    Filed: April 10, 2008
    Publication date: July 28, 2011
    Inventors: Jack A. Syage, Karl A. Hanold
  • Patent number: 7968055
    Abstract: The measurement is conducted by means of thermogravimetric scales (10) bearing at one end of the beam (20) a catalyst body (30) for catalysing a coking reaction of the tars present in the gas state. Precautions are taken in order to ensure homogeneity and regularity of the sampled gas flow and to guarantee predominant catalysis on the catalytic body (30), the weight increase of which gives the weight of the deposited coke and indirectly the content of tars present in the gas state in the gas to be measured. A calorimetric device (34) for analyzing gases from the coking of the tars provides a complementary and/or additional measurement. The solid tars are filtered beforehand, but their content may be measured by an auxiliary device. Possible application to analyzing gases from biomass.
    Type: Grant
    Filed: December 27, 2007
    Date of Patent: June 28, 2011
    Assignee: Commissariat a l'Energie Atomique
    Inventors: Meryl Brothier, Pierre Estubier, Johann Soyez
  • Patent number: 7966862
    Abstract: A particulate matter detector formed in an insulated device such as a spark plug. The insulated device has a center electrode having a first end and a second end. The first end of the center electrode passes through the insulated device and may be connected to a terminal. The second end of the electrode is formed to provide a greater surface area. The form may be a star, circle, series of S's or a helix to increase the surface area of the second end of the center electrode that may be exposed to the exhaust from an engine. The sensor may be used to measure particulate matter in the exhaust of an engine and permit a processor to regulate the operation of the engine.
    Type: Grant
    Filed: January 28, 2008
    Date of Patent: June 28, 2011
    Assignee: Honeywell International Inc.
    Inventors: Devlin M. Gualtieri, James Piascik
  • Patent number: 7932490
    Abstract: An apparatus and method for estimating size segregated aerosol mass concentration in real time and using a single detector. A beam of electromagnetic radiation is passed through a particle stream made of a test or field aerosol. The single detector outputs an electrical signal proportional to the electromagnetic radiation scattered thereupon. The electrical signal may be conditioned to produce an integrated signal for measuring radiation scattered from all the particles in the interrogation volume, a pulse height from an individual particle within the volume, and/or a time-of-flight measurement from the individual particle. The integrated signal can be correlated to particle mass concentration. The pulse height signal and the time-of-flight signal may be converted to infer the size of the individual particle. Attendant size distributions for the particle sizes may also be obtained. Using known or assumed particle properties, the mass concentration may be estimated from the size distribution.
    Type: Grant
    Filed: August 7, 2008
    Date of Patent: April 26, 2011
    Assignee: TSI, Inc.
    Inventors: Xiaoliang Wang, Jugal Agarwal, George John Chancellor, James Evenstad
  • Publication number: 20110058157
    Abstract: A method of helping particle detection and a method of particle detection include an adsorption/infiltration step where an organic gas is brought into contact with organic particles to cause an organic gas component to be adsorbed and infiltrate to the organic particles; a foaming step where a heated gas is brought into contact with the organic particles contacted with the organic gas to foam/expand the organic particles; and an organic-particle detection step where the foamed/expanded organic particles are irradiated with light and light scattered by the organic particles is received to detect the organic particles. Further, the methods include an oxidation step where inorganic particles and the organic particles are oxidized to decompose the organic particles and expand the inorganic particles; and an inorganic particle detection step where the expanded inorganic particles are irradiated with light and light scattered by the inorganic particles is received to detect the inorganic particles.
    Type: Application
    Filed: January 20, 2009
    Publication date: March 10, 2011
    Applicant: Tokyo Electron Limited
    Inventors: Shigeru Kawamura, Teruyuki Hayashl
  • Publication number: 20110056273
    Abstract: The invention provides an apparatus for increasing the size of gas-entrained particles in order to render the gas-entrained particles detectable by a particle detector, the apparatus comprising an evaporation chamber (2) and a condenser (7); the apparatus is configured so that vapour-laden gas from the evaporation chamber can flow into the condenser and condensation of the vaporisable substance onto gas-entrained particles in the condenser takes place to increase the size of the particles so that they are capable of being detected by a particle detector.
    Type: Application
    Filed: May 8, 2009
    Publication date: March 10, 2011
    Applicant: NANEUM LIMITED
    Inventors: Boris Zachar Gorbunov, Harald Wilhelm Julius Gnewuch
  • Patent number: 7900500
    Abstract: A particulate matter (PM) sensor includes an embedded self-calibrator. The PM sensor is to be installed in an exhaust corridor of an internal combustion engine. The PM sensor can self-calibrate by imposing a known potential across a protective housing in which the conductive probe is suspended. An image charge that is imposed upon the conductive probe is fed back and correlated to generate an updated calibration for the PM sensor.
    Type: Grant
    Filed: November 5, 2007
    Date of Patent: March 8, 2011
    Assignee: Honeywell International Inc.
    Inventor: Brian C. Krafthefer
  • Publication number: 20110048106
    Abstract: A system for improving operation of an engine having a particulate matter sensor is presented. The system may be used to improve engine operation during cold starts especially under conditions where water vapor or entrained water droplets are present in vehicle exhaust gases. In one embodiment, particulate sensor degradation is indicated in response to an output of said particulate matter sensor staying below a threshold as engine temperature increases past the dewpoint temperature.
    Type: Application
    Filed: December 21, 2009
    Publication date: March 3, 2011
    Applicant: FORD GLOBAL TECHNOLOGIES, LLC
    Inventors: Garry Anthony Zawacki, Robert F. Novak, Roberto Teran, JR., Dave Charles Weber, Michiel J. Van Nieuwstadt, Michael Hopka, William Charles Ruona