Electrode Cleaner, Apparatus Part Flusher, Discharger, Or Wet Collector (e.g., Wet Film Electrode, Etc.) Patents (Class 96/28)
  • Publication number: 20140123854
    Abstract: Methods and apparatus for hydrodischarging and hydrocharging substrates and articles to produce enhanced ability to avoid attraction of contaminants or improved capability of removing contaminants from fluids are disclosed. In another form the method involves removal of electric charges or neutralization of charge on or within substrates. Also disclosed are methods of making using electret substrates and articles for removing particulates and mists from fluid streams.
    Type: Application
    Filed: November 5, 2012
    Publication date: May 8, 2014
    Inventor: William K. Leonard
  • Patent number: 8366813
    Abstract: A particulate matter detection device (100) includes a first electrode (10) that includes a conductive section (12) and a dielectric (14) that covers the conductive section (12), and a second electrode (20) that is disposed opposite to the first electrode (10) at an interval of 0.3 to 3.0 mm. Charged particulate matter contained in a fluid that passes through the space between the first electrode (10) and the second electrode (20), or particulate matter that is contained in a fluid and charged by a discharge that occurs due to application of a voltage between the electrodes (10) and (20) is electrically adsorbed on at least one of the electrodes (10) and (20), and the particulate matter adsorbed on the electrodes (10) and (20) is detected by measuring a change in electrical properties of the first electrode (10), or a change in electrical properties of the electrodes (10) and (20).
    Type: Grant
    Filed: March 2, 2010
    Date of Patent: February 5, 2013
    Assignee: NGK Insulators, Ltd.
    Inventors: Masahiro Tokuda, Atsuo Kondo, Takeshi Sakuma, Takashi Egami
  • Publication number: 20120111188
    Abstract: An electrostatic precipitator and a method of removal of particulates from gaseous flows. A plurality of screens, secured in sets within a central chamber in a housing, comprise at least one set of electrically chargeable first screens and at least one set of electrically grounded second screens. For each set of chargeable screens, all the screens of the set are provided with an identical electrical charge, either positive or negative, and the set is provided with a plurality of spikes directed at the oncoming gaseous flow. At least one screen cleaning means selectively acts on the screens of each set. The precipitator can comprise a plurality of central chambers in a single housing or separate housings, and the chambers can be selectively activated or deactivated. The precipitator provides improved particulate removal from gaseous flows, including hot flows having temperatures up to at least 1200° C.
    Type: Application
    Filed: July 16, 2010
    Publication date: May 10, 2012
    Applicant: HER MAJESTY THE QUEEN IN RIGHT OF CANADA AS REPRESENTED BY THE MINISTER OF NATURAL RESOURCES
    Inventors: Kourosh Zanganeh, Zahirul Hasan Khan, Carlos Salvador, Jack Jensen
  • Patent number: 8157902
    Abstract: The present invention is broadly directed to non-thermal plasma-based systems for reducing the amount of particulate matter in a gas stream, as well as to methods for using such systems. The present invention is particularly directed to such non-thermal plasma-based particulate matter reduction systems with self-cleaning surfaces. Particularly contemplated are self-cleaning surfaces that reduce particulate matter buildup such as is likely to cause the reduction of non-thermal plasma production in the system, and therefore the ability of such systems to reduce the amount of particulate matter in the gas stream.
    Type: Grant
    Filed: March 25, 2009
    Date of Patent: April 17, 2012
    Assignee: Environmental Energy Technologies, Inc.
    Inventors: Ali Ogut, Richard Backus
  • Publication number: 20110308384
    Abstract: A system for enhancing air quality by collecting airborne particles. The system includes at least one ground plane, at least one corona point, an ionization field strength adjustment mechanism and a cleaning mechanism. The at least one ground plane is operably mounted proximate to where the airborne particles are present. The at least one ground plane includes at least one ground plane surface. The least one corona point operably is mounted to the at least one ground plane for causing an accumulation of particles to be deposited on the at least one ground plane surface. The ionization field strength adjustment mechanism enables a distance between the at least one corona point and the at least one ground plane to be adjusted. The cleaning mechanism is capable of removing the accumulation of particles from the at least one ground plane surface.
    Type: Application
    Filed: September 1, 2011
    Publication date: December 22, 2011
    Applicant: BAUMGARTNER ENVIRONICS. INC.
    Inventors: John Baumgartner, Matthew Baumgartner
  • Publication number: 20110000374
    Abstract: An air processing device is provided by which a current-carrying section is attached to a casing by an insulating member having a covering section covering an outer periphery face of a current-carrying section and a tube-like section in which a power source-side end of the covering section is supported by a tube bottom section. This consequently secures a long insulating distance from an electric discharge spray section and a charged dust collecting section via the current-carrying section to the casing. As a result, the respective electrodes and the casing can have an improved insulating performance therebetween even under an environment where water droplets are supplied.
    Type: Application
    Filed: March 3, 2009
    Publication date: January 6, 2011
    Inventors: Toshio Tanaka, Kanji Motegi, Tsunahiro Ohdou
  • Patent number: 7862649
    Abstract: A particulate matter detection device includes a collection electrode that collects the particulate matter, a discharge electrode that allows a corona discharge to occur when a voltage is applied between the collection electrode and the discharge electrode, a measurement electrode, the impedance between the collection electrode and the measurement electrode changing when the collection electrode has collected the particulate matter, and a measurement section that detects a change in the impedance between the collection electrode and the measurement electrode, the particulate matter detection device detecting the particulate matter by charging the particulate matter contained in the gas by utilizing the corona discharge, collecting the charged particulate matter by the collection electrode by utilizing an electrostatic force, and detecting a change in the impedance between the collection electrode that has collected the particulate matter and the measurement electrode using the measurement section.
    Type: Grant
    Filed: August 14, 2009
    Date of Patent: January 4, 2011
    Assignee: NGK Insulators, Ltd.
    Inventors: Takeshi Sakuma, Yasumasa Fujioka, Atsuo Kondo
  • Publication number: 20100236413
    Abstract: The present invention relates to the use of corrosion, temperature and spark resistant electrically conductive components in wet electrostatic precipitator systems (WESPs). In particular, the present invention is directed to using a conductive composite material in the fabrication of wet electrostatic precipitator system components.
    Type: Application
    Filed: June 18, 2008
    Publication date: September 23, 2010
    Inventor: Robert A. Allan
  • Publication number: 20100236412
    Abstract: The electrostatic filter for the separation of dust particles has collecting electrodes (3-7) fixed in a housing (2) through which the gas flows and discharge electrodes (16-20) arranged parallel to them and held stretched between insulators (29, 30). For the cleaning of the collecting electrodes (3-7), a cleaning equipment (33) is fixed to a cable (28) having the discharge electrodes (16-20), which can be moved along the surface of the collecting electrodes to be cleaned by means of a pulling device (30-32) having a coiling drum (26, 27).
    Type: Application
    Filed: March 18, 2009
    Publication date: September 23, 2010
    Inventor: Jorg MEISTER
  • Publication number: 20100122629
    Abstract: Air purifier containing an air blower and a rotating brush, such brush having long flexible bristles made of a material that is capable of developing negative triboelectric charge. During a part of the rotation cycle, the bristles move across a surface that can accumulate a positive charge. This cause the bristle to charge negatively. The air impurities are attracted to negatively charged bristles and discharged into a collecting bin.
    Type: Application
    Filed: October 26, 2009
    Publication date: May 20, 2010
    Inventor: Jacob Fraden
  • Publication number: 20090314162
    Abstract: A wet electrostatic precipitator is disclosed to include a condensation-growth chamber, a precipitation chamber connecting with the condensation-growth chamber, three dual-sleeve members mounted in the precipitation chamber, three discharge electrodes connecting with the dual-sleeve members, two insulating members covering on the inner surface of the precipitation chamber, and two ground electrodes mounted on the outside of the precipitation chamber. Thus, a uniform water film is formed on the surface of the insulating members to wash away the particles from waste gas. The condensation-growth chamber is provided for the particles to grow therein and thereby enhances the collection efficiency. The insulating member acts as a shield between the discharge electrodes and the ground electrodes and thereby avoids a short circuit or sparks.
    Type: Application
    Filed: November 14, 2008
    Publication date: December 24, 2009
    Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Tzu-Mimg CHEN, Shou-Nan Li, Chuen-Jinn Tsai, Sheng-Jen Yu, Guan-Yu Lin
  • Publication number: 20090266231
    Abstract: A method and apparatus for the separation of particles from a flow of gas, where both large, heavy and small, light particles can be separated off from the gas by means of the combined effect of an electrostatic attraction force and a centrifugal force in a centrifugal separator (10) of the type that comprises a rotor (14) that has a plurality of adjacent surface elements (16) with intermediate gas flow gaps (48) and that is mounted in such a way that it can rotate in a surrounding casing (12), which casing has an inlet (18) for unclean gas and an outlet (22) for clean gas and an outlet (24) for separated-of f particles. A charging unit (44) ionizes the particles upstream of the rotor (14). An electrical field is generated between adjacent surface elements (16) of the rotor in order to attract the ionized light particles towards a face of the surface elements by means of the electrostatic force.
    Type: Application
    Filed: June 27, 2006
    Publication date: October 29, 2009
    Inventors: Peter Franzen, Claes Inge, Torgny Lagerstedt
  • Publication number: 20090007788
    Abstract: An electrostatically charged rotating plate or cylinder is used to attract electrostatically charged particles in smoke to avoid pollution and improve the efficiency of the filtering process. The rotating plate is constantly cleaned from the ionized particles adhering to it and the particles so collected are removed without polluting the environment. This filtering system reduces capital and running costs compared with the present filtering systems.
    Type: Application
    Filed: July 2, 2007
    Publication date: January 8, 2009
    Inventors: Noam Arye, Daniel Nir-Nemenyi, Dov Rothfeld, Uzi Ezra Havosha
  • Publication number: 20080307964
    Abstract: Contaminant laden gas streams from wood product dryer operations, and other sources, are purified. The gas stream first is saturated with moisture by contacting the gas stream with fine liquid droplets which entrain particulates. The gas stream then is subjected to a plurality of separate particulate and liquid droplet removal steps before a droplet-free gas stream having substantially reduced particulate contaminant levels is passed to a burner for removal of volatile organic compounds from the gas stream.
    Type: Application
    Filed: April 11, 2005
    Publication date: December 18, 2008
    Applicant: TURBOSONIC INC.
    Inventors: Edward F. Spink, Robert A. Allan
  • Patent number: 7435288
    Abstract: The present invention relates to a system for effectively filtering particulate matter from exhaust gas. Exemplary embodiments of the invention provides a system for capturing diesel-powered vehicle particulate matter in exhaust gas, the system including: a detour channel at the interior of the entrance to the diesel particulate filter, an electrode located in front of the detour channel and operable to ionize the particulate matter, and a control unit operable to control operation of the electrode.
    Type: Grant
    Filed: December 29, 2006
    Date of Patent: October 14, 2008
    Assignee: Hyundai Motor Company
    Inventor: Kangsoo Lee
  • Publication number: 20080216659
    Abstract: The present invention provides a water-flowing mechanism in a wet type electrostatic precipitator that can stably and quickly form a water film on a dust-collecting plate even at the beginning of the operation and that has an excellent adjusting function of a supplying flow-rate of washing liquid. The present invention includes a dust-collecting plate, a washing liquid supplying source to wet the dust-collecting plate, and a cylindrical member that is opened according to the shape of the upper end face of the dust-collecting plate and into which the washing liquid supplying source is inserted, wherein the horizontal cross-section of the dust-collecting plate is formed in a corrugated shape, and the lower opening of the cylindrical member is formed in a corrugated shape according to the dust-collecting plate.
    Type: Application
    Filed: February 28, 2008
    Publication date: September 11, 2008
    Applicant: HITACHI PLANT TECHNOLOGIES, LTD.
    Inventors: Sachio Maekawa, Mitsuaki Yanagida, Shinichi Kawabata, Keigo Orita, Yoshihiko Mochizuki
  • Publication number: 20080072756
    Abstract: The present invention relates to a system for effectively filtering particulate matter from exhaust gas. Exemplary embodiments of the invention provides a system for capturing diesel-powered vehicle particulate matter in exhaust gas, the system including: a detour channel at the interior of the entrance to the diesel particulate filter, an electrode located in front of the detour channel and operable to ionize the particulate matter, and a control unit operable to control operation of the electrode.
    Type: Application
    Filed: December 29, 2006
    Publication date: March 27, 2008
    Inventor: Kangsoo Lee
  • Publication number: 20070295207
    Abstract: Embodiments of the present invention relate to an electrostatic collection device and method for extracting impurities from gas. The collection devices includes at least one electrical field for charging particles, where the particles are in a gas, and at least one collection surface for collecting charged particles. The device further includes at least one heating element for heating the at least one collection surface to vaporize the collected particles.
    Type: Application
    Filed: June 23, 2006
    Publication date: December 27, 2007
    Applicant: SCEPTOR INDUSTRIES, INC.
    Inventors: RICHARD R. THOMAS, FREEMAN SWANK, ANDREW FAIRCHILD
  • Patent number: 7160506
    Abstract: A system for electronically disinfecting air includes a first electrode, at least a second electrode, the first and second electrode being spaced apart from one another. The surfaces of the first or second electrode include a semiconductor or a dielectric layer having a thickness of at least 10 angstroms disposed thereon. An electrical power supply is connected between the first and said second electrode, wherein pollutants in air to be disinfected are destroyed by exposure of the air to surfaces of the first or second electrode.
    Type: Grant
    Filed: December 14, 2004
    Date of Patent: January 9, 2007
    Assignee: University of Florida Research Foundation, Inc.
    Inventor: Deepak Anant Deshpande
  • Patent number: 6955708
    Abstract: Air-treatment apparatus and methods are disclosed that are especially suitable for treating the air in a room or other dwelling or working space. An apparatus embodiment of the subject apparatus includes a housing having air-intake and air-output openings. A gas-filter assembly inside the housing receives air entering the air-intake opening and includes a dual-media filter element having a matrix of fibers to which particles of activated carbon are adhered at mutual points of contact without using an extraneous binder. As air passes through the gas-filter assembly, the carbon particles adsorb odor compounds from the air. At least one electrostatic 3-dimensional (E3D) filter assembly downstream of the gas-filter assembly includes a respective charging element sandwiched between dielectric-fiber filters sandwiched between two respective electrically conductive screens. The screens are electrically grounded while the charging element (which is conductive) is connected to a source of high-voltage DC power.
    Type: Grant
    Filed: December 6, 2004
    Date of Patent: October 18, 2005
    Assignee: Shaklee Corporation
    Inventors: John J. Julos, Victor Dragotti, Forwood Cloud Wiser
  • Patent number: 6956217
    Abstract: A device for separating particles according to their respective masses includes a substantially cylindrical wall of inner radius, “Rwall”, that surrounds a chamber and defines a longitudinal axis. A multi-species plasma having relatively cold ions is initiated at a first end of the chamber within a relatively small radius, “rsource”, from the longitudinal axis. A hollow cylinder having an outer radius, “Router”, is positioned at the second end of the chamber and centered on the axis. Cross electric and magnetic fields (E×B) are established in the chamber that are configured to send ions of relatively high mass on trajectories having a radial apogee, rapogee, that is greater than the cylinder's outer radius (r>Router). After reaching apogee, these ions lose energy and strike the cylinder where they are collected. Low mass ions are placed on small radius helical trajectories and pass through the hollow cylinder.
    Type: Grant
    Filed: February 10, 2004
    Date of Patent: October 18, 2005
    Assignee: Archimedes Operating, LLC
    Inventor: Tihiro Ohkawa
  • Patent number: 6660061
    Abstract: A vapor filtration device including a first electrode, a second electrode, and a filter between the first and second electrodes is disclosed. The filter is formed of dielectric material and the device is operated by applying a first electric potential between the electrodes to polarize the dielectric material such that upon passing a vapor stream through the filter, particles from the vapor stream are deposited onto the filter. After depositing the particles a second higher voltage is applied between the electrodes to form a nonthermal plasma around the filter to vaporize the collected particles thereby cleaning the filter. The filter can be a packed bed or serpentine filter mat, and an optional upstream corona wire can be utilized to charge airborne particles prior to their deposition on the filter.
    Type: Grant
    Filed: October 26, 2001
    Date of Patent: December 9, 2003
    Assignee: Battelle Memorial Institute
    Inventors: Gary B. Josephson, William O. Heath, Christopher L. Aardahl
  • Patent number: 6635105
    Abstract: The invention relates to an electrostatic precipitator for collecting liquid or solid particles from a gas stream. The electrostatic precipitator consists of a tube (1), through which the gas to be cleaned flows longitudinally, the internal wall (1A) of the tube forming a precipitating electrode for the particles to be collected. An internal electrode (2) extending in a lengthwise direction is disposed concentrically inside tube (1), a high electrical voltage being present in the space between this internal electrode and the precipitating electrode. On the inlet side, internal electrode (2) has a first section (2A) with a small cross-sectional area, and on the outlet side, a second section (2B) with a comparatively larger cross-sectional area. The function of the first section is essentially to form a corona while that of the second section is essentially to form an electrostatic collecting field.
    Type: Grant
    Filed: July 10, 2002
    Date of Patent: October 21, 2003
    Assignee: Ing. Walter Hengst GmbH & Co. KG
    Inventors: Stephan Ahlborn, Heiko Schumann
  • Patent number: 6508861
    Abstract: An improvement in an electrostatic precipitator and method for removing particulate contaminants entrained in a gas stream passed through an electrode arrangement in which particulates are charged in a first electrostatic field and subjected to a second electrostatic field to be removed and collected for further disposition. The electrode arrangement includes a charging section having a charging electrode and a field electrode, and a collecting section having a repelling electrode and a collecting electrode. The field electrode and the collecting electrode are integrated, providing a relatively compact construction, and the charging electrode and the repelling electrode are electrically separated by high voltage diodes in a single power supply arrangement such that the charging section and the collecting section each are provided with a corresponding electrostatic field operated at an optimum voltage and current for respectively charging and collecting particulate contaminants entrained in the gas stream.
    Type: Grant
    Filed: October 26, 2001
    Date of Patent: January 21, 2003
    Assignee: Croll Reynolds Clean Air Technologies, Inc.
    Inventor: Isaac Ray
  • Patent number: 6506348
    Abstract: There is provided a heavy oil fired boiler exhaust gas treatment apparatus which removes soot and dust and SO3 in the heavy oil fired boiler exhaust gas efficiently at a low cost without using an excessively large apparatus. The treatment apparatus comprises a charging device 3 provided at the inlet of an absorption tower of a wet type exhaust gas desulfurizer 4 and neutralizer pouring means A provided on the upstream side of the charging device 3 to pour a neutralizer into exhaust gas and neutralize SO3 in the exhaust gas.
    Type: Grant
    Filed: November 10, 1998
    Date of Patent: January 14, 2003
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Eiji Ochi, Takeo Shinoda, Toru Takashina, Masakazu Onizuka
  • Publication number: 20020194997
    Abstract: The invention relates to an electrostatic precipitator for collecting liquid or solid particles from a gas stream. The electrostatic precipitator consists of a tube (1), through which the gas to be cleaned flows longitudinally, the internal wall (1A) of the tube forming a precipitating electrode for the particles to be collected. An internal electrode (2) extending in a lengthwise direction is disposed concentrically inside tube (1), a high electrical voltage being present in the space between this internal electrode and the precipitating electrode. On the inlet side, internal electrode (2) has a first section (2A) with a small cross-sectional area, and on the outlet side, a second section (2B) with a comparatively larger cross-sectional area. The function of the first section is essentially to form a corona while that of the second section is essentially to form an electrostatic collecting field.
    Type: Application
    Filed: July 10, 2002
    Publication date: December 26, 2002
    Inventors: Stephan Ahlborn, Heiko Schumann
  • Patent number: 6436170
    Abstract: An apparatus for removing particles from a gas in a high purity flowing gas system is provided which includes a flow tube inserted inline in the flowing gas system having an inlet and an outlet, a pressure sealed, electrically insulated feed-through integral to the flow tube, an emitter inserted through the feed-through into the flow tube to create a plasma in the gas to charge particles in the gas, and a collector surface in proximity to the emitter; whereby an electric field between the emitter and the collector surface draws the particles in the gas to the collector surface.
    Type: Grant
    Filed: June 23, 2000
    Date of Patent: August 20, 2002
    Assignee: Air Products and Chemical, Inc.
    Inventors: Wayne Thomas McDermott, Richard Carl Ockovic
  • Patent number: 6348103
    Abstract: A method for cleaning a two-stage emission electrode of an electrofilter suitable for use with an internal combustion engine, whereby a cleaning body moves along the emission electrode to strip it of deposits. Only the first stage of the electrode is cleaned by the cleaning body.
    Type: Grant
    Filed: May 23, 2000
    Date of Patent: February 19, 2002
    Assignee: Firma Ing. Walter Hengst GmbH & Co. KG
    Inventors: Stefan Ahlborn, Heiko Schumann, Harald Blomerius
  • Patent number: 6251170
    Abstract: An electronic dust collector has a discharge line spaced parallel to a dust collector electrode. Discharge line fixing parts at the ends of the discharge line are bent outward to increase the distance from the dust collector electrode, thereby reducing the likelihood of abnormal discharge between the discharge line fixing parts and the dust collector electrode. In another embodiment, the discharge line and the discharge line fixing parts remain in alignment, and the ends of the dust collector electrode facing the line fixing parts are bent outward. The electronic dust collector may be part of an air conditioner. The dust collector electrode has a heater therein for self cleaning.
    Type: Grant
    Filed: December 22, 1998
    Date of Patent: June 26, 2001
    Assignee: Funai Electric Co., Ltd.
    Inventors: Yasumasa Hironaka, Hisanobu Tanaka, Shinji Yoshida
  • Patent number: 6245132
    Abstract: Electrically enhanced filter, includes a filter element, a pair of electrodes sandwiching the filter element, a DC, AC, pulse, or RF power supply coupled to the electrode to create an electrostatic field across the filter element and to produce attracting forces between micro-organisms contained in the air and the filter element, and a power supply creating a sterilizing electrical field, which may be either an RF, DC, pulse, or AC power supply coupled to the electrodes and creating discharging or non-discharging voltages on the filter element to destruct the micro-organisms at and in the vicinity of the filter element.
    Type: Grant
    Filed: August 7, 2000
    Date of Patent: June 12, 2001
    Assignee: Environmental Elements Corp.
    Inventors: Paul L. Feldman, Dennis J. Helfritch
  • Patent number: 6171376
    Abstract: An air conditioner has an electronic dust collector incorporated in its casing. A mounting plate is grounded which, in turn, grounds the casing of the air conditioner. This reduces adsorption of dust to the casing, thereby preventing soiling of the casing with dust or fine particles.
    Type: Grant
    Filed: November 25, 1998
    Date of Patent: January 9, 2001
    Assignee: Funai Electric Co., Ltd.
    Inventors: Yasumasa Hironaka, Ayumi Tajika
  • Patent number: 6156099
    Abstract: An electronic dust collector for collecting and removing dust from an air stream uses a corona discharge between a discharge electrode and a dust collection electrode to ionize the dust particles which are then attracted to, and held, on the surface of the negatively charged dust collection electrode. The surface of the dust collection electrode includes a catalyst layer for oxidizing and decomposing the deposited dust thereon. A heater is included in the dust collection electrode for periodic self-cleaning. The application of electricity to the heater is controlled to produce slow moderate temperature elevation during the self-cleaning of the dust collection electrode. This permits stepwise oxidation and decomposition of the dust deposited on the dust collection electrode, thereby cleaning the dust collection electrode by removing the dust on the dust collection electrode while suppressing generation of smoke and odor which would otherwise occur by burning of the dust.
    Type: Grant
    Filed: November 25, 1998
    Date of Patent: December 5, 2000
    Assignee: Funai Electric Co., Ltd.
    Inventors: Yasumasa Hironaka, Yoriko Uemura
  • Patent number: 6149717
    Abstract: An electronic air cleaner (10) includes a housing (20), a mechanical prefilter (30), an electrostatic precipitator cell (40) and at least one germicidal lamp (50). The electrostatic precipitator cell (40) includes a plurality of collector plates (42) for collecting thereon particulate material from the air stream. The germicidal lamp or lamps (50) are disposed to irradiate the collector plates (42) and any particulate material collected thereon with germicidal light to destroy microbial growth that might occur on the particulate material deposited on the collector plates. Reflectors (60) may be provided in operative association with the germicidal lamp or lamps (50) to concentrate the germicidal light unto the collecting surface of the collector plates (42). A post filter (90), disposed downstream with respect to air flow of the lamp or lamps (50), is provided to remove volatile organic compounds from the air flow.
    Type: Grant
    Filed: December 22, 1998
    Date of Patent: November 21, 2000
    Assignee: Carrier Corporation
    Inventors: Sunita Satyapal, Antonio Rinaldi, Robert J. Hall, Laurence R. Boedeker
  • Patent number: 6129781
    Abstract: An air conditioning apparatus with an air cleaning function. In the apparatus, an electric dust collector is provided in the air passage on the rear side of a heat exchanger. A heater for self-cleaning is combined with a dust collector electrode of the electric dust collector. A heat shield plate is combined with the heater. Air flow resistance is not increased although the dust collector electrode is plane in shape. An increase of air flow resistance caused by the use of the heat shield plate is also suppressed.
    Type: Grant
    Filed: June 18, 1998
    Date of Patent: October 10, 2000
    Assignee: Funai Electric Co., Ltd.
    Inventors: Yoshikatsu Okamoto, Yoshiaki Ikuzawa, Akinori Okazaki, Takao Sakaue
  • Patent number: 6099808
    Abstract: A submicron filter assembly (24) is added to an exhaust gas controlled destruction and oxidation unit (10). Controlled destruction and oxidation unit (10) treats exhaust gas from at least one semiconductor wafer fabricating reactor. The submicron filter (24) filters submicron particles out of the treated exhaust gas to prevent visible plumes from forming in wafer fab exhaust systems (stacks). The controlled destruction and oxidation unit (10) and submicron filter assembly (24) are ideally suited for use at the point of generation of the exhaust gases. In one embodiment of the invention, the submicron filter assembly comprises an electrostatic filter (26). The electrostatic filter (26) includes a positively charged first grid (28) and a grounded second grid (30). The second grid may include a mist screen for removing particulate build-up. In another embodiment of the invention, the submicron filter assembly (36) comprises a mist eliminator (38) and a HEPA filter (40).
    Type: Grant
    Filed: October 5, 1993
    Date of Patent: August 8, 2000
    Assignee: Texas Instruments Incorporated
    Inventors: John D. Miller, W. Leon Cooley, Tim Herman, Robert R. Moore
  • Patent number: 5879435
    Abstract: An electronic air cleaner (10) includes a housing (20), a mechanical prefilter (30), an electrostatic precipitator cell (40) and at least one germicidal lamp (50). The electrostatic precipitator cell (40) includes a plurality of collector plates (42) for collecting thereon particulate material from the air stream. The germicidal lamp or lamps (50) are disposed to irradiating the collector plates (42) and any particulate material collected thereon with germicidal light to destroy microbial growth that might occur on the particulate material deposited on the collector plates. Reflectors (60) may be provided in operative association with the germicidal lamp or lamps (50) to concentrate the germicidal light unto the collecting surface of the collector plates (42).
    Type: Grant
    Filed: January 6, 1997
    Date of Patent: March 9, 1999
    Assignee: Carrier Corporation
    Inventors: Sunita Satyapal, H. Harvey Michels, William A. Faris
  • Patent number: 5639359
    Abstract: An anvil arrangement for receiving rapper impacts and transmitting them to a discharge electrode of a precipitator has an electrode tube made of deformable material, having an open end and forming part of the discharge electrode. An anvil having a head and a shank is connected to the head and the shank has a size for insertion into the open end of the tube. The head is larger than the tube for engagement against the open end of the tube. The shank has a recess therein and at least one crimp in the tube near the open end thereof and in the vicinity of the recess of the shank for retaining the anvil to the tube. An alternate embodiment receives the electrode tube therein and engages the tube with an angled groove.
    Type: Grant
    Filed: October 5, 1995
    Date of Patent: June 17, 1997
    Assignee: The Babcock & Wilcox Company
    Inventors: Edward J. Piaskowski, Robert E. Snyder
  • Patent number: 4183990
    Abstract: A step tablet in which density steps of a definite shape, each density step having a specific optical density, form a series of decreasing or increasing densities, in which any two density steps contiguous to each other are disposed with a boundary space of a specific shape between the density steps.
    Type: Grant
    Filed: November 21, 1977
    Date of Patent: January 15, 1980
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Toshio Uchida, Yorimiti Yabuta, Hiroshi Noguchi, Eiichi Hasegawa, Teppei Ikeda
  • Patent number: 4169731
    Abstract: A very simple and easy method for preparing dry planographic printing plates having a high printing performance and durability in the absence of dampening water is proposed. The method comprises the steps of (a) coating one surface of substrate which is transparent to ultraviolet light with an uncured photocurable silicone, (b) bringing the thus coated surface into direct contact with a surface of a base plate to form a laminate, (c) providing on the other surface of the substrate an image pattern made of a material which is opaque to ultraviolet light, (d) irradiating the laminate with ultraviolet light from above the image pattern and (e) separating the substrate from the base plate to allow a portion of the photocured silicone coating to transfer to the surface of the base plate, and a portion of the uncured silicone coating to stay in situ on the surface of the substrate.
    Type: Grant
    Filed: January 11, 1978
    Date of Patent: October 2, 1979
    Assignees: Dai Nippon Printing Co. Ltd, Shin-Etsu Chemical Co. Ltd.
    Inventors: Atsumi Noshiro, Hiroyuki Obata, Minoru Takamizawa, Yoshio Inoue
  • Patent number: 4157261
    Abstract: In an image forming process which comprises image-wise exposing to light a laminate composed of a substrate, a photosensitive composition layer and a transparent support, superposed in that order, through the support, removing either the exposed portion or the unexposed portion of the photosensitive composition layer together with the support while adhered thereto, peeling off the support to leave the other of the exposed portion or the unexposed portion of the photosensitive composition layer on the substrate, the improvement where the photosensitive composition comprises:(1) a reaction product prepared by the esterification of: (a) at least one of acrylic acid and methacrylic acid, (b) at least one polybasic acid and (c) at least one polyhydric alcohol;(2) a photo-polymerization initiator; and(3) a binder.
    Type: Grant
    Filed: September 20, 1977
    Date of Patent: June 5, 1979
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Keiji Takeda
  • Patent number: 4145216
    Abstract: A dry system for forming and transferring images is provided. The system comprises a photoactive component comprising a tacky photohardenable layer on a selected carrier sheet and a transfer component comprising a frangible color layer on a selected carrier sheet. The two components are disposed with their photohardenable and color layers in air-free contact with one another and then subjected to irradiation with actinic radiation in accordance with a selected image pattern so as to cause selected portions of the photohardenable layer to harden and fuse to confronting portions of the color layer. Then the two components are separated whereby the fused portions of the color layer are separated from its carrier sheet and transferred to the photoactive component. Thereafter the color layer remaining on the transferable component is coated with a pressure-sensitive adhesive.
    Type: Grant
    Filed: September 30, 1977
    Date of Patent: March 20, 1979
    Assignee: Seal Incorporated
    Inventors: Richard E. Merrill, Theodore H. Krueger
  • Patent number: 4097279
    Abstract: A process for preparing identification cards which comprises spreading bonding material on a substrate, placing a transparent film over the coated substrate, superposing a photograph having opaque and transparent portions, directing light rays to harden portions of the bonding material which correspond to the transparent parts of the photograph, spreading particulate material over the bonding material, removing the particulate material that has not adhered to the bonding material, and sealing a transparent covering. An identification card comprising a thermoplastic coated magnetic backing means, large number of individual particles arranged to constitute a photographic image bonded to the thermoplastic coated backing means, and a transparent covering overlying the backing and heat sealed thereto. Also provided is a unitary laminated identification card that has a three-dimensional effect which cannot be readily photographically counterfeited and is substantially tamper-proof.
    Type: Grant
    Filed: July 11, 1974
    Date of Patent: June 27, 1978
    Inventor: Edwin Nelson Whitehead
  • Patent number: 4093464
    Abstract: A light-sensitive layer transfer material and such layer disposed on a carrier, for use in screen-printing stencils, printed circuit boards, integrated circuits, intaglio printing plates, relief printing plates, proof prints and the like, which comprises an alkali-soluble phenolic resin, such as phenol-formaldehyde novolacs, an ester or an amide of an o-naphthoquinone-diazide sulphonic acid, such as the p-cumyl phenyl ester of 1,2-naphthoquinone-2-diazide-4-sulphonic acid, etc., and an acrylic resin, such as a polymer of an alkyl ester of acrylic acid or methacrylic acid.
    Type: Grant
    Filed: July 26, 1973
    Date of Patent: June 6, 1978
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Hans Ruckert, Barbara Wildenhain
  • Patent number: 4069047
    Abstract: There is disclosed a photoelectrophoretic imaging system wherein a layer of an imaging suspension is arranged between a conductive transparent electrode and a second electrode, preferably a blocking electrode, subjected to an electrical field and exposed to an imagewise pattern of activating electromagnetic radiation to form an image on the transparent electrode which is subsequently transferred to a receiver member and fixed thereto. The conductive transparent electrode comprises a layer of a conductive material overlying a layer of polymeric material which overlies a substrate and is also utilized during the transfer and fixing of the image.
    Type: Grant
    Filed: June 27, 1975
    Date of Patent: January 17, 1978
    Assignee: Xerox Corporation
    Inventors: Luke C. Lin, Morton Schrager
  • Patent number: 4050936
    Abstract: An image forming process which comprises image-wise exposing a photosensitive material to light, the photosensitive material comprising a support and a substrate with a photopolymerizable material therebetween, and stripping off the support to leave either exposed areas or non-exposed areas of the photopolymerizable material on the substrate, in which the photopolymerizable material is characterized by comprising at least two different photopolymerizable layers which each comprise one or more addition polymerizable monomers, one or more photopolymerization initiators and one or more binders, which photopolymerizable layers are placed adjacent the support and the substrate, wherein at least one of the ingredients or the ratio of the ingredients of the photopolymerizable layers is different in at least the two different photopolymerizable layers, and the photopolymerizable layers have the relationship of C>A>B and C'>B'>A' or C>B>A and C'>A'>B', wherein:A is the adhesive strength between
    Type: Grant
    Filed: December 29, 1975
    Date of Patent: September 27, 1977
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Keiji Takeda, Masataka Murata, Teppei Ikeda
  • Patent number: 4041204
    Abstract: A photosensitive sheet product which enables dry transfer sheets to be made very simply by a process involving photographic exposure, water-washing to remove unexposed parts of the photosensitive material and drying. The photo-sensitive material itself contains the resin or other adhesive present in the letters or other transferable images and the problem of the adhesiveness which would be apparent in the transferred characters or pictorial matter in the product is solved by making the dry transfer sheet with a temporary keycoat which transfers with the characters or pictorial matter and remains as a protective layer on the finished product. Another advantageous feature of the dry transfer sheets described is that they can be formulated so as to be pressure-transferable in the normal way or alternatively can be heated or solvent-treated to exhibit a permanently increased adhesiveness, making broad-area transfer possible using much lower transfer pressures than required in normal use.
    Type: Grant
    Filed: January 18, 1974
    Date of Patent: August 9, 1977
    Assignee: The Autotype Company Limited
    Inventors: Martin Hepher, John Arthur Sperry, Malcolm John Stewart
  • Patent number: 4033770
    Abstract: Process and material for the production and use of pressure sensitive and for heat sensitive and/or solvent sensitive decalcomanias, formed according to the principles of the silver complex diffusion transfer process.
    Type: Grant
    Filed: April 4, 1975
    Date of Patent: July 5, 1977
    Assignee: AGFA-GEVAERT N.V.
    Inventors: Louis Maria De Haes, Leon Louis Vermeulen, Hugo Karel Gevers, Walter Frans De Winter
  • Patent number: 4029505
    Abstract: Positive polymer images are produced on substrates having applied thereto a layer of photopolymerizable composition containing (1) a non-gaseous ethylenically unsaturated compound capable of polymerization by free-radical initiated chain propagation, (2) a dinitroso compound which is a noninhibitor of free-radical polymerization and is photochemically converted by ultraviolet radiation to an inhibitor of free-radical polymerization, and (3) a photoactivatable organic free-radical generating system.
    Type: Grant
    Filed: May 20, 1976
    Date of Patent: June 14, 1977
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: William John Nebe
  • Patent number: 4004924
    Abstract: A process for reproducing an original having visible light absorptive image markings on a light transparent background by exposing to visible light passing through the original a normally water-removable heat-sensitive recording layer which consists essentially of a hydrophilic water-removable binder having generally homogeneously distributed therethrough finely divided particles of a hydrophobic thermoplastic polymer normally solid at room temperature together with finely divided material capable of absorbing visible light and converting it into heat and is otherwise generally transparent. The exposure is for a time lasting no longer than 10.sup.-.sup.1 second to visible light of an intensity of at least 0.3 watt, sec. per sq.cm.
    Type: Grant
    Filed: June 17, 1975
    Date of Patent: January 25, 1977
    Assignee: AGFA-GEVAERT N.V.
    Inventors: Marcel Nicolas Vrancken, Wolfgang Lassig
  • Patent number: 4002478
    Abstract: A method for forming a relief pattern on a substrate which comprises the steps of: (I) allowing a photosensitive sheet to adhere on said substrate, said photosensitive sheet containing a photo-impervious ink layer, releasing layer, pattern forming layer and photosensitive resin layer; (II) radiating actinic rays on said photosensitive sheet to cure an irradiated portion of said photosensitive resin layer; (III) peeling off the upper layers of said photosensitive sheet; and (IV) washing away the un-cured portion of said photosensitive resin layer to produce a fine and decorative relief pattern.
    Type: Grant
    Filed: January 2, 1976
    Date of Patent: January 11, 1977
    Assignee: Kansai Paint Company, Ltd.
    Inventors: Tomoo Kokawa, Yoshikathu Nakao, Kunio Akiyama