Including Solid, Extended Surface, Fluid Contact Reaction Means (e.g., Raschig Rings, Particulate Or Monolithic Catalyst, Etc.) Patents (Class 422/122)
  • Patent number: 6063343
    Abstract: A compact, efficient reactor for the photocatalyzed conversion of contaminants in a fluid stream. The reactor includes a photocatalyst disposed on a support structure with a light source in optical proximity to the support structure to activate the photocatalyst. In one embodiment of the invention, the support structure includes multiple non-intersecting fins oriented parallel to the general flow direction of the fluid stream to provide a reactor with low pressure drop and adequate mass transfer of the contaminant to the photocatalyst disposed on the surface of the fins. The light source includes one or more lamps that may penetrate the fins to provide efficient illumination of the photocatalyst. The fins may be flat or pleated. In an alternative embodiment, the fins are pleated and composed of a porous material. These fins are oriented so that the fluid stream flows through the fins.
    Type: Grant
    Filed: June 12, 1998
    Date of Patent: May 16, 2000
    Assignee: E. Heller & Company
    Inventors: James Say, Roger Bonnecaze, Adam Heller, Steven Sitkiewitz, Ephraim Heller, Paul Haugsjaa
  • Patent number: 6048499
    Abstract: An antiseptic clean system according to the invention is designed to effectively and thoroughly destruct not only drifting microbes but also germs that have fallen and are adhering to the panels and to the backsides and the gaps of the pieces of equipment installed in the room. It is adapted for use with a clean room provided with antiseptic panels and comprises one or more than one air conditioners, each having an air conditioner main body containing therein a photocatalyst so that air is fed back into the room after passing through the photocatalyst.
    Type: Grant
    Filed: June 26, 1997
    Date of Patent: April 11, 2000
    Assignee: Hirayma Setsube Kabushiki Kaisha
    Inventor: Shoji Hirayama
  • Patent number: 6042637
    Abstract: A miniature air purifier produces a corona discharge surrounding a needle-like emitter point connected to a negative DC power supply. The power supply operates from a nine volt battery and contains a step-up voltage inverter having a single transformer outputting high voltage spikes with a voltage multiplier operating on the output of the inverter. The production of high voltage spikes of about 200 Hz rather than a sinusoidally varying voltage significantly reduces current consumption. The needle-like emitter point is located about 1/4-inch from an 80% open mesh metallic grid held at ground potential. Corona discharge at the emitter point ionizes the air and creates ozone, and nitric oxide both of which combine with direct electron impact decomposition to detoxify and destroy a wide variety of airborne pollutants including pathogens, chemicals and allergens.
    Type: Grant
    Filed: September 28, 1998
    Date of Patent: March 28, 2000
    Inventor: Stanley Weinberg
  • Patent number: 6010666
    Abstract: Hydrogen sulfide is dehydrogenated to generate a HS group and an S group. The HS group is oxidized to generate sulfuric acid, which is bonded to a metal. The S group is polymerized with a CH.sub.3 S group to generate methyl trisulfide or methyl tetrasulfide, which is adsorbed to an adsorbent. Methyl mercaptan is dehydrogenated, for example, to generate a CH.sub.3 S group. A portion of the CH.sub.3 S group is oxidized to generate methanesulfonic acid, which is bonded to a metal. Another portion of the CH.sub.3 S group is polymerized with the CH.sub.3 S group itself to generate methyl disulfide, at least a portion of which is adsorbed to an adsorbent. Still another portion of the CH.sub.3 S group is polymerized with the S group to generate methyl trisulfide or methyl tetrasulfide, which is physically adsorbed to an adsorbent. In this manner, malodor components including hydrogen sulfide and methyl mercaptan can efficiently be removed without producing or release of harmful secondary products.
    Type: Grant
    Filed: November 15, 1996
    Date of Patent: January 4, 2000
    Assignee: Toto, Ltd.
    Inventors: Tetsuya Kurokawa, Chihiro Kobayashi, Tomonori Tokumoto, Masahiro Yamamoto, Takashi Tsuchida
  • Patent number: 6007781
    Abstract: A catalyst system useful at room temperature for the destruction of ozone (O.sub.3), which is comprised of a washcoat of high surface area support containing Mn/Cu catalyst deposited on a macroporous carrier, such as a honeycomb monolith, optionally with the addition of noble metal (such as Pt) washcoat to remove carbon monoxide.
    Type: Grant
    Filed: November 24, 1997
    Date of Patent: December 28, 1999
    Assignee: Goal Line Environmental Technologies LLC
    Inventors: Larry E. Campbell, Michele W. Sanders
  • Patent number: 5993738
    Abstract: A method for disinfecting an airstream containing microorganisms by electrostatic precipitation by passing the airstream through the space between at least one grounded collection plate having at least one electrode spaced apart therefrom connected to a source of electrical potential, wherein the improvement comprises contacting the airstream with a photocatalyst having a predetermined band gap energy coated on the surface of each grounded collection plate and illuminated with photons having a wavelength corresponding to the band gap energy of the photocatalyst, so that at least a portion of the microorganisms that collect on the grounded collection plate are destroyed by photocatalytic oxidation. Devices embodying disinfecting methods are also disclosed.
    Type: Grant
    Filed: May 13, 1998
    Date of Patent: November 30, 1999
    Assignee: Universal Air Technology
    Inventor: D. Yogi Goswani
  • Patent number: 5989496
    Abstract: A waste plastic disposal apparatus (K1-K4) including a storage portion (2) for storing waste plastic; a heating portion (7) for heating the waste plastic, which includes a heater (7b) and a fan (7a); a hot-air circulating path (20) for circulating hot air therethrough, which is defined by the storage portion (2) and the heating portion (7); an exhaust path (10) which branches off from the hot-air circulating path (20); and a deodorizing portion (9) which is provided in the exhaust path in response to intake of a predetermined quantity of external air into the hot-air circulating path (20) per unit time, the hot air in the hot-air circulating path (20) is exhausted in a quantity equal to the predetermined quantity from the exhaust path (10) through the deodorizing portion (9).
    Type: Grant
    Filed: January 12, 1998
    Date of Patent: November 23, 1999
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Kunihiro Ukai, Takeshi Tomizawa, Tatsuo Fujita, Jiro Suzuki, Mitsuyuki Nakazono, Tomotaka Hattori
  • Patent number: 5985113
    Abstract: A ceramic element is provided which can be injection molded from an electrolyte and a binder. The ceramic element includes a tube support portion and a plurality of tubes extending from the tube support portion. The plurality of tubes are arranged in rows and columns. A plurality of vias extend from one surface of the tube support portion to an opposite surface of the tube support portion. The ceramic element is coated with an electrically conductive coating and a current collector coating. The vias are coated with the electrically conductive coating and plugged. After the coatings are removed in selected areas of the ceramic element, the tubes of the ceramic element form a series-parallel array because tubes in the same column are connected in parallel electrically and tubes in adjacent rows are connected in series electrically. Two ceramic elements are sealed together to form a modular electrochemical device. The electrochemical device can be either an oxygen generator or a fuel cell.
    Type: Grant
    Filed: January 22, 1998
    Date of Patent: November 16, 1999
    Assignee: Litton Systems, Inc.
    Inventors: Victor Paul Crome, Russell Frank Hart, Scott Richard Sehlin
  • Patent number: 5976471
    Abstract: In an improved ozone decomposing air filter carbon fibers are held together with a carbonized binder in a perforated structure. The structure is made by combining rayon fibers with gelatin, forming the mixture in a mold, freeze-drying, and vacuum baking.
    Type: Grant
    Filed: April 16, 1997
    Date of Patent: November 2, 1999
    Assignee: Lockheed Martin Energy Systems, Inc.
    Inventors: Ronald F. Simandl, John D. Brown, LeRoy L. Whinnery, Jr.
  • Patent number: 5972291
    Abstract: An apparatus and method for rendering infectious and medical waste safe through heating and the disposal of said waste includes a body portion with a chamber to receive a container of medical waste. The chamber is connected with a filter for biological materials which escape from the waste container during heating. The contaminants are directed toward the filter by flowing out gas from the container in a predetermined direction as the waste container is heated to a temperature of preferably not less than 350.degree. F. and preferably not more than 385.degree. F. to render the waste biologically safe and unreusable.
    Type: Grant
    Filed: January 30, 1997
    Date of Patent: October 26, 1999
    Assignee: Thermal Waste Technologies, Inc.
    Inventors: Thomas Healy, Eric Schink, Jonathan Bricken
  • Patent number: 5968454
    Abstract: An apparatus and method for generating chlorine dioxide. Reagents are introduced into the lower end of a reaction column through "V" inlets. The reagent column surrounds a center column through which motive fluid moves upwardly into a nozzle and venturi throat to produce a zone of reduced pressure at the upper end of the reaction column. The reagents move upwardly through the column interacting throughout 360.degree.. Reaction product exits the generator through the venturi throat.
    Type: Grant
    Filed: April 2, 1998
    Date of Patent: October 19, 1999
    Assignee: Vulcan Chemical Technologies, Inc.
    Inventors: Peter W. Deacon, Jess McLaughlin
  • Patent number: 5965091
    Abstract: The present invention relates to a filled paper for gas filtration, with a high adsorption and absorption capacity. This paper, consisting of cellulose fibers, is filled with organic and/or inorganic powders adapted in quantity and in quality to the gas to be treated.It finds its application in the petroleum, chemical, agri-foodstuffs and papermaking industries, in apartment buildings and in office and hospital buildings.
    Type: Grant
    Filed: December 10, 1997
    Date of Patent: October 12, 1999
    Assignees: Elf Antar France, Ahlstrom
    Inventors: Francois-Pierre Navarre, Bernard Bossand, Pierre Girard, Joseph Dussaud
  • Patent number: 5961929
    Abstract: The present invention includes an oxygen generator having a ceramic honeycomb body. The honeycomb body includes one or more oxygen collection channels which extend laterally across a plurality of second channels in which oxygen is generated via the conduction of oxygen ions from a source gas residing in or passing through a plurality of first channels. The oxygen collection channels are located either positionally along a face of the generator, on one longitudinal end of the generator or are staggered about the side face such that the oxygen collection channels do not substantially impact the structural integrity of the honeycomb body. In addition, a method in which a honeycomb body having oxygen collection channels at its face includes extruding a ceramic body and forming one or more channels at a face of the extruded body. The method further includes forming electrodes within the body and sealing selected channels for the collection of oxygen.
    Type: Grant
    Filed: September 9, 1997
    Date of Patent: October 5, 1999
    Assignee: CeramPhysics, Inc.
    Inventor: William N. Lawless
  • Patent number: 5958334
    Abstract: A solid combination of compounds capable of being packaged in a single, air tight container, and capable of forming an odor barrier for trapping/blocking odors, especially in relation to a toilet, urinal or other aqueous based waste container/vehicle/pipe/drain is provided, as is a method for its use. The combination comprises (i) a first component comprising an alkaline effervescent compound in solid form, (ii) a second component comprising an acid in solid form, and (iii) an oxidizing agent in solid form, and at least one of the first component and second components comprise a stable foam-forming surfactant in solid form. The first component reacts with the second components to form a stable foam odor barrier which traps/blocks odors.
    Type: Grant
    Filed: September 24, 1996
    Date of Patent: September 28, 1999
    Inventor: Bruce Alexander Haddon
  • Patent number: 5948355
    Abstract: An air-purifying filter includes a carrier base and a TiO.sub.2 -Pd composite catalyst supported on the carrier base. CO in air treated by the filter is adsorbed onto the Pd surface and thus decomposed by oxidization to CO.sub.2, whereas sulfur compounds in the air are adsorbed onto the Pd surface and then transferred to the TiO.sub.2 surface where they are decomposed by oxidization to SO.sub.4.sup.-2 when the TiO.sub.2 is subjected to irradiation. Preferably, Pd exists in a relatively small quantity at a first side of the carrier base in the vicinity of a light source and in a greater quantity at a second side opposite the first side. The first side is preferably located upstream relative to flow of air treated by the filter. An air-purifier utilizing this filter is mounted in an automobile, preferably on a rear shelf or in a trunk compartment.
    Type: Grant
    Filed: August 26, 1997
    Date of Patent: September 7, 1999
    Assignees: Akira Fujishima, Kazuhito Hashimoto, KabushikiKaisha Equos Research, Aisin Aw Co., Ltd.
    Inventors: Akira Fujishima, Kazuhito Hashimoto, Shuzo Moroto, Masao Ando, Masako Sakai
  • Patent number: 5935525
    Abstract: An air abatement system that includes a pre-treatment system and an air treatment system for abatement of contaminated air that includes pollutants such as V.O.C.s, NOx, and/or CO. The air stream is treated using activated air, activated water, and ultraviolet light under conditions that produce hyroxyls, peroxides, and other oxidants without the formation of ozone. These oxidants are also utilized in the activated air, with the activated water being formed as an aqueous solution of the activated air. The pre-treatment system includes a quenching zone where activated water is misted into the air stream, followed by alternating reaction zones and depletion zones where activated air is added and then turbulently mixed with the air stream. The air treatment system includes a primary treatment tunnel, carbon bed system, activated air generator, and a sparger tank farm. Activated air produced by the generator as added into water while being exposed to ultraviolet light in the sparger tank farm.
    Type: Grant
    Filed: November 1, 1996
    Date of Patent: August 10, 1999
    Assignee: Tri-Mark Corporation
    Inventors: Phillip A. Lincoln, Jessie E. Roberts
  • Patent number: 5928610
    Abstract: An improved oxygen generator (20) includes an air compressor (21) having a pressure port (22) and a suction port (23) and being selectively operable to produce a flow of air from the suction port to the pressure port; a molecular sieve (30) having an inlet communicating with the compressor and having an outlet, the sieve being adapted to adsorb nitrogen from a flow of gas passing therethrough; a storage tank (33) communicating with the sieve outlet and adapted to store oxygen-rich gas passing through the sieve; and a control valve (24) operatively arranged between the compressor and the sieve and being selectively movable between a first position in which air flows from the compressor suction port through the sieve to the storage tank and a second position in which oxygen-rich gas flows from the storage tank through the sieve and control valve to desorb nitrogen in the sieve.
    Type: Grant
    Filed: April 28, 1998
    Date of Patent: July 27, 1999
    Assignee: Oxygen Generating Systems, Inc.
    Inventors: Michael E. Moran, Joseph M. McMahon, Shane R. Manning
  • Patent number: 5924292
    Abstract: A deodorizing element (10) for use in a refrigerator (1). The element acts to remove food odors from the air circulating through the refrigerator which has a refrigeration system (5) by which air is circulated throughout a food storage compartment (2-4). The deodorizing element comprises a metal rod (14) at each end of which are electrical connections (16a, 16b) for connecting the heating element into an electrical circuit by which current is drawn through the rod. A layer (24) of a coating material is formed on the outer surface of the rod. This coating material is an odor absorbing material which is activated by the heat generated when current flows through the heating rod. The heating rod is mounted in an air circulation path of the refrigeration system by which air flowing through the system is drawn over the heating element and odors in the air are absorbed by the coating material.
    Type: Grant
    Filed: January 19, 1998
    Date of Patent: July 20, 1999
    Assignee: Emerson Electric Company
    Inventor: Randall Markum
  • Patent number: 5925321
    Abstract: A garbage disposing device of an energy-saving type comprises a housing having an air intake port and an air discharge port, and a vessel mounted within the housing to store therein food wastes. The vessel has an air inlet and an air outlet. An intake passage is formed in the housing to extend from the intake port to the air inlet for introducing a fresh air into the vessel. An exhaust passage is formed within the housing to extend from the air outlet to the discharge port for discharging therethrough an air containing unpleasant odor resulting from a decomposition of the food wastes. A deodorizer unit comprises a catalyst for decomposing the unpleasant odor in the air, a heater for activating the catalyst, and a case for incorporating therein the catalyst and the heater.
    Type: Grant
    Filed: November 5, 1997
    Date of Patent: July 20, 1999
    Assignee: Matsushita Electric Works, Ltd.
    Inventors: Masanori Koyamoto, Harushige Tsusaka, Kaoru Yamashita, Kazumasa Rokushima, Junichi Ikeuchi, Hiroyasu Kawanishi, Takashi Hyodo, Hideo Fujimoto, Tomoaki Fujii, Yoshitoshi Kanetsuna
  • Patent number: 5919422
    Abstract: A photo-catalyzer for deodorizing, cleaning, sterilizing, and water purifying operations includes a substrate, a titanium dioxide film disposed on the substrate and functioning as a photo-catalyst, and a light-emitting diode disposed adjacent to the titanium dioxide film and producing ultraviolet light having a wavelength from 360 to 400 nm onto the titanium dioxide film. The photo-catalyzer can be used in places where there is no sunlight because it is optionally provided with a light-emitting diode. The light-emitting diode does not require a large installation space because it is an extremely small light-emitting device. Hence, the photo-catalyzer has a compact structure and can be used easily anywhere, including small places. The substrate can be fabricated into a variety of useful appliances to take advantage of the strong oxidizing properties of the photo-catalyzer.
    Type: Grant
    Filed: July 26, 1996
    Date of Patent: July 6, 1999
    Assignee: Toyoda Gosei Co., Ltd.
    Inventors: Osamu Yamanaka, Tadanobu Iwasa, Makoto Tamaki, Kazuhiro Sakai, Hisao Yamaguchi
  • Patent number: 5910291
    Abstract: A filter device and method of filtering components from a surgery plume. The filter device comprises an integral solution reservoir which intercepts an airstream passage and airstream and cooperates with the airstream to direct air and solution into pads to create a foam. The foam created by the pads and solution and additional elements of the filter react with one or more undesirable components of the surgery plume to cleanse the airstream prior to exhaustion into the atmosphere. No separate solution supply or delivery system is necessary.
    Type: Grant
    Filed: June 3, 1996
    Date of Patent: June 8, 1999
    Assignee: EnviroSurgical, Inc.
    Inventors: Randy Marc Skalla, Carl Austin Ahrens, Robert Keith Garner, Jr., Bradley Carl Wilkinson
  • Patent number: 5908601
    Abstract: A bad odor eliminating device especially useful at the throw-in gate of the closed type waste receiving space such as a garbage storage tank, a resources recovery case etc., when the/throw-in gate is opened, the device can create negative pressure around the throw-in gate, so that air in the waste receiving space will not sread out, and therefore bad odor will not be released. The device includes mainly a window frame, a wind drawing pipe and a filter, a fan is also provided to create the above stated negative pressure on an air guiding groove at the circumference of the window frame and the throw-in gate to absorb air with bad odor to filter out dust in the air and do ion exchanging with the filter to eliminate bad odor. An object of getting sanitary circumstances can thus be achieved.
    Type: Grant
    Filed: October 8, 1997
    Date of Patent: June 1, 1999
    Inventor: Chien-Hung Lin
  • Patent number: 5904896
    Abstract: An air filtration and purification system, particularly adapted for treating contaminated air within a preselected zone of a building interior space, includes a filter and purifier unit comprising first and second stage particle filters, an odor neutralizer comprising an ozone generator, an activated carbon adsorbent media for extracting gaseous compositions exposed to the ozone injected into the airflow stream and an ultrahigh efficiency final stage particle filter. All filter units and the ozone generator are disposed in a cabinet together with one or more air propulsion fans interposed between the second stage particle filter and the adsorbent media. The system is particularly configured for removing air containing tobacco smoke and other contaminants from smoking areas of restaurants and other places of business and may be configured to return purified and odorized air through ceiling ducts to form an air curtain defining the zone.
    Type: Grant
    Filed: November 6, 1997
    Date of Patent: May 18, 1999
    Assignee: A. R. Grindl
    Inventor: Alan V. L. High
  • Patent number: 5904901
    Abstract: A purpose of this invention is to provide an apparatus which can carry out a deodorization/odor-removal/disinfection work even on a large-scaled matter such as a room etc. effectively and efficiently. A deodorization/odor-removal/disinfection apparatus of this invention is equipped with an ozone generator (1), an ozone blow-off mechanism which blows generated ozone from a blow-off port (12), a device (2) which atomizes aqueous hydrogen peroxide, and an aqueous hydrogen peroxide blow-off mechanism which blows the atomized aqueous hydrogen peroxide from a blow-off port (32). This apparatus generates ozone and at the same time produces aqueous hydrogen peroxide under atomized state, makes the both contact each other and then makes them contact with an object.
    Type: Grant
    Filed: September 22, 1997
    Date of Patent: May 18, 1999
    Assignee: Duskin Co., Ltd.
    Inventors: Kikuo Shimono, Eiichi Tominaga, Masao Kajimaki
  • Patent number: 5904909
    Abstract: A method for the removal and rapid decomposition of halogenated fumigation agents is described. A fumigation agent, such as methyl bromide, contained in the gas stream exiting a fumigation chamber or structure is captured on activated carbon or other retentive substrate and rapidly decomposed using thiosulfate and water. The method provides an inexpensive, safe, and on-site executable way to remove and detoxify methyl bromide from fumigation discharge gases, thereby reducing or eliminating methyl bromide emissions into the atmosphere.
    Type: Grant
    Filed: August 21, 1997
    Date of Patent: May 18, 1999
    Assignees: The United States of America as represented by the Secretary of Agriculture, The Regents of the University of California
    Inventors: Scott R. Yates, Jianying Gan
  • Patent number: 5891400
    Abstract: A volatile substance dispenser including an inner open-top container for receiving and holding a heat source, such as a candle, and an outer open-top container for receiving and holding a gel containing a vaporizable or diffusable substance that passes from the gel into the surrounding atmosphere after exposure to the thermal energy from the lighted heat source, e.g. candle. The inner container can be glass, ceramic, earthenware or metal, preferably glass with a roughened outer surface.
    Type: Grant
    Filed: January 20, 1998
    Date of Patent: April 6, 1999
    Assignee: Quest International B.V.
    Inventors: H. Rahman Ansari, Barbara Potts, Janet Finnerty
  • Patent number: 5891402
    Abstract: The present invention is an improved apparatus and method for using a catalyst to remove contaminants from a fluid stream. Catalytic particles are enmeshed within a highly porous expanded polytetrafluoroethylene (PTFE) substrate. The use of an expanded PTFE substrate provides added strength to the substrate and provides open and uniform porosity, thus, assuring proper exchange of molecules between the exterior surface of the substrate and the catalytic particles held within it. As such, the present invention is particularly suitable for use as a cross-flow filter for use in ozone generating office equipment (e.g., an electro-static photocopy machine) or similar application requiring minimal pressure drop across the filter unit.
    Type: Grant
    Filed: May 2, 1995
    Date of Patent: April 6, 1999
    Assignee: W. L. Gore & Associates, Inc.
    Inventors: Robert L. Sassa, Alex R. Hobson, Jeffrey C. Towler, James H. Bushong
  • Patent number: 5883916
    Abstract: There is provided a cylindrical valve 20 for placement in the flow path of a singlet-delta oxygen generator 12 that feeds O.sub.2.sup.* to a chemical laser gain medium 14. The feed path 22 includes a sharp 90.degree. bend 24 that causes fluid velocity variations in O.sub.2.sup.* entering the gain medium 14. Integral with the valve 20 is a tubular structure 12 having a partial circumferential radially extending surface 44 fitted with "O" ring for sealing and opening the feed path between the "O.sub.2.sup.* " generator 12 and gain generator 14. A series of vanes 32, 34, 36 disposed in velocity control zones 50, 52, 54 and 56 are integral with the valve 20 for leveling out the velocity variations and controlling the wake formation 58, 59 and 60 in the O.sub.2.sup.* entering the gain generator 14.
    Type: Grant
    Filed: July 9, 1997
    Date of Patent: March 16, 1999
    Assignee: TRW Inc.
    Inventors: Peter D. Lohn, Robert A. Schlichting
  • Patent number: 5879622
    Abstract: Scatalogical and other offensive odors are neutralized by prior deposit into a receptacle of drops of an alcoholic solution of menthol, peppermint oil and a pleasant smelling oil such as lemon oil. The menthol is present in an amount of 10% by weight, the lemon oil is present in an amount of 7.5% by weight, and the peppermint oil is present in an amount of 1% by weight.
    Type: Grant
    Filed: February 3, 1993
    Date of Patent: March 9, 1999
    Inventor: Frank Meehan
  • Patent number: 5876662
    Abstract: An odor control system for removing hydrogen sulfide from a gas stream. In a first chamber, the gas stream is initially treated with NaOH at low pH for removal of about 70% of the H.sub.2 S. Unreacted NaOH and the reaction product Na.sub.2 S flow into a first sump while the initially treated gas stream flows into a second chamber, fluidly connected to a second sump. In the second chamber, the gas stream is scrubbed with a solution of NaOH and NaOCl for scrubbing of the remaining H.sub.2 S before the cleaned gas is exhausted to atmosphere. From the second chamber, unreacted NaOH and NaOCl, together with reaction products sulfur, Na.sub.2 SO.sub.4 and Na.sub.2 S flow into the second sump. The contents of the two sumps are flushed out separately by adding make up water to each of them. Each sump has a separate drain and each drain empties into a common drain where the Na.sub.2 S from the first sump reacts with unreacted NaOCl from the second sump to produce sulfur and Na.sub.2 SO.sub.4.
    Type: Grant
    Filed: February 3, 1997
    Date of Patent: March 2, 1999
    Assignee: US Filter/RJ Environmental, Inc.
    Inventor: Roop C. Jain
  • Patent number: 5874052
    Abstract: The present invention includes a filter, 10, for purifying smoke plume generated from electrocautery or laser surgery. The filter includes a pre-filter, 11, for filtering gross particulate; a first filter, 12, having a structurally blended antimicrobial agent and adapted to capture and destroy minute and harmful organic particles such as viruses or bacteria at high efficiency; a second filter, 13, having a charcoal bed for removing gaseous toxins and odors from the smoke plume and a post-filter, 14, adapted to complete the general filtering process and to control the migration of any charcoal fines or other filter elements. The filter is adapted to be used in connection with various filter containers or hoods, including a rectangular hood, 16, or an industry-standard cylindrical filtering container, 20.
    Type: Grant
    Filed: May 5, 1997
    Date of Patent: February 23, 1999
    Assignee: Medtek Devices, Inc.
    Inventor: Clint Holland
  • Patent number: 5871624
    Abstract: A ceramic oxygen generator is described which is capable of modular construction to permit the oxygen generation capacity to be expanded. An ionically conducted ceramic electrolyte is formed into a series of rows and columns of tubes on a tube support member and like electrolyte bodies can be connected together to form a manifold therebetween for oxygen produced in the interiors of the rubes. An electrical connection between tubes is formed such that the anodes and cathodes of tubes in a column are connected in parallel while the tubes in the row are, respectively, connected anode to cathode to form a series connection.
    Type: Grant
    Filed: February 6, 1998
    Date of Patent: February 16, 1999
    Assignee: Litton Systems, Inc.
    Inventor: Victor P. Crome
  • Patent number: 5857947
    Abstract: An energy expenditure garment includes various elastic resistance elements located on the garment so as to help in the training of a user while participating in a swinging sport, such as golf or racquet sports. The garment could also include a biofeedback sensor to indicate when a proper swing has or has not been performed.
    Type: Grant
    Filed: July 14, 1997
    Date of Patent: January 12, 1999
    Inventors: Timothy P. Dicker, William T. Wilkinson
  • Patent number: 5852062
    Abstract: An apparatus (10) for liquefying tires is shown in a first form including a plurality of tire modules (12) holding tires which are immersed in and preheated by a slurry located in a tank (22). After preheating, the tire module (12) and tires held thereon are removed from the preheat tank (22) and are immersed in a slurry located in a high temperature tank (28). The temperature of the slurry in the high temperature tank (28) is sufficient to liquify the tires. As the tires liquify, the slurry produced is retained in the high temperature tank (28) to immerse further tires and also overflows from the high temperature tank (28) to the preheat tank (22) and then to a storage tank (36). The slurry from the storage tank (36) can be pumped to the burner (42) of the heat exchanger (48) for heating the slurry in the high temperature tank (28) or can be used for other purposes.
    Type: Grant
    Filed: June 8, 1994
    Date of Patent: December 22, 1998
    Inventor: Roland K. Carpenter
  • Patent number: 5840246
    Abstract: A fragrance device for delivering a fragrance or other volatile material includes a fluid vessel containing a quantity of a fuel, a wick, and a porous emanator element which releases the fragrance or volatile material particularly when the wick is burning. Methods for the manufacture of the device, as well as methods for its use of are also disclosed.
    Type: Grant
    Filed: August 6, 1996
    Date of Patent: November 24, 1998
    Assignee: Reckitt & Colman Inc.
    Inventors: Randall Lee Hammons, Stephen Vito Dente, Thomas Shiaw-tong Lin
  • Patent number: 5840245
    Abstract: Described is a method for reducing the amount of microorganisms in contaminated air in which a fiberglass containing air filtration media is provided which contains an antimicrobially effective amount of an inorganic antimicrobial agent; and forcing the contaminated air through the air filter thereby reducing the amount of microorganisms in the contaminated air. The invention further pertains to media for reducing the amount of microorganisms present in contaminated air as well as methods of applying the inorganic antimicrobial agents to the media and for the media to be present in a rigid air filter.
    Type: Grant
    Filed: December 5, 1995
    Date of Patent: November 24, 1998
    Assignee: Johns Manville International, Inc.
    Inventors: Garth Coombs, Isidro Vasquez Bastidas, Jr.
  • Patent number: 5837207
    Abstract: A lightweight portable germicidal air filter for home and personal use is disclosed. The air filter includes a cabinet which houses an electrostatic air filter, an ultraviolet lamp and a parabolic reflector or a convex lens for focusing the ultraviolet radiation emitted by the lamp on an upstream side of the air filter. The reflector or the lens are constantly oscillated to systematically sweep the upstream side of the filter with germicidal levels of radiation. A fan located adjacent the downstream side of the filter draws air through the filter and impels it out through areas for air outlet in the sidewalls of the cabinet. The advantage is a simple, lightweight germicidal air filter with few moving parts which is inexpensive to manufacture.
    Type: Grant
    Filed: April 17, 1997
    Date of Patent: November 17, 1998
    Assignee: Engineering Dynamics Limited
    Inventor: George Robert Summers
  • Patent number: 5830414
    Abstract: An air cleaning filter having a carrier made of activated carbon fibers in the form of a web which supports at least one kind of chemical agent selected from the group consisting of (a) an alkali agent selected from a hydroxide or carbonate or an alkali metal, (b) an acidifying agent selected from acid aluminum phosphate or phosphoric acid, and (c) an oxidizing agent composed of two compounds, i.e. active manganese dioxide resulting from an alkali permanganate and an alkali iodate, or which supports combined chemicals of (a) the alkali agent and (c) the oxidizing agent, or combined chemicals of (b) the acidifying agent and (c) the oxidizing agent, wherein one or both surfaces of the web are covered with a nonwoven fabric to make an integrated filter.
    Type: Grant
    Filed: July 29, 1996
    Date of Patent: November 3, 1998
    Assignees: Kondoh Industries Limited, Cambridge Filter Japan, Ltd., Unitika Ltd., Nippon Chemical Industrial Co., Ltd.
    Inventors: Tsutomu Ishii, Seiichi Takizawa, Tetsuo Shimamura, Michinori Hashimoto, Shozo Ichimura, Fumio Karibe
  • Patent number: 5827483
    Abstract: An essential oil diffuser having a compact foldable tripod support is provided to facilitate carrying the diffuser in luggage such as briefcases or handbags. The essential oil diffuser will heat oil to the proper temperature without risk of overheating or burning the oil through combustion. In order to achieve a compact package having a short vertical dimension, the oil bowl must be placed close to the candle flame and so the diffuser includes a double bowl assembly supported by three folding legs. The double bowl assembly has an upper bowl member and a lower plate member separated by a uniform air gap. The lower plate member has a large radial flange extending beyond the perimeter of the upper bowl member, thereby containing spills. The lower flange of the lower plate member also serves as a heat sink, thereby diffusing and dissipating excess heat from the candle by convection and radiation.
    Type: Grant
    Filed: May 30, 1997
    Date of Patent: October 27, 1998
    Assignee: New Venture Engineering, Inc.
    Inventor: Philip S. Fullam
  • Patent number: 5804146
    Abstract: A chemical oxygen generator with a chemical mass, which is accommodated inside a container, generates oxygen by a chemical reaction, and is held in the container by a gas-permeable fibrous material. The fibrous material is arranged around the chemical mass. The fibrous material is designed as a chemical sorption filter.
    Type: Grant
    Filed: March 4, 1997
    Date of Patent: September 8, 1998
    Assignee: Dragerwerk AG
    Inventors: Harald Heyer, Udo Burchardt, Rainer Ernst
  • Patent number: 5772959
    Abstract: A refrigerator freshening device includes an air-permeable container, enclosing a mixture, in particulate form, of a major amount of activated carbon and a minor amount of an odor-absorbing zeolite. The activated carbon is preferably characterized by a good distribution of large and small pores, at least 30 percent of the pores having a diameter of from about 15 to less than about 50 .ANG. and the zeolite by a strong organophilic character and a surface area of at least about 400 square meters per gram. The combination of particulate adsorbent materials preferably includes from about 5 to about 25 percent of the zeolite and from about 75 to about 95 percent of the activated carbon. The device preferably includes a front panel. a back panel, and a package constructed of flexible, porous material enclosing absorbent, wherein the front panel receives the back panel in nesting relationship and encloses the package of adsorbent material. Hooks are preferred to suspend the device freely within a refrigerator.
    Type: Grant
    Filed: October 11, 1996
    Date of Patent: June 30, 1998
    Assignee: Harrison-Clifton, Inc.
    Inventor: Edward M. Bermas
  • Patent number: 5766938
    Abstract: The present invention provides a biological deodorizing apparatus of large treating capacity and capable instantly of bringing into operation. The apparatus comprises a casing (1), a rotary shaft (2) and a carriers cartridge (3).
    Type: Grant
    Filed: May 14, 1997
    Date of Patent: June 16, 1998
    Assignee: Sankyo Kogyo Co., Ltd.
    Inventor: Kenjiro Hongo
  • Patent number: 5750077
    Abstract: A man-portable light weight emergency oxygen supply system device for providing breathable oxygen for periods exceeding ten minutes. The device can be easily affixed to personnel for mobile use or mounted for stationary applications. A typical on-person system, weighing over three pounds, can supply pure oxygen for short periods of time, extending to the order of an hour for mixtures with ambient air to provide nominal sea-level oxygen concentrations. A catalyzed endothermic reaction is utilized to produce oxygen with no potential for harmful contaminants or danger of accidental initiation or fire/explosion hazard. Potential applications include use for emergency evacuations, such as hotel fires, aviation emergencies including de-pressurization and fires, and medical emergencies requiring oxygen administration prior to arrival of emergency medical equipment or ambulances.
    Type: Grant
    Filed: July 22, 1996
    Date of Patent: May 12, 1998
    Inventor: Neil C. Schoen
  • Patent number: 5741207
    Abstract: A portable whole body exercise device is disclosed that utilizes a rigid hollow tube and two elastic cords that may have different tensions. Elastic cord runs lengthwise through the hollow tube, while an additional elastic cord is connected between the open ends of the tube.
    Type: Grant
    Filed: January 23, 1996
    Date of Patent: April 21, 1998
    Inventors: Nick J. Buoni, Willis Y. Jordan
  • Patent number: 5714126
    Abstract: The present invention provides a respirator filter system suitable for filtering toxic agents, including organic vapors, acid gases, formaldehyde, ammonia, and methylamine as well as pesticides, CS and CN tear gases, dusts, mists, fumes and radionuclides from environmental air to be respired by a user of the filter system. In general, the filter system of the present invention includes a cartridge containing a layer of an unimpregnated activated carbon, a layer of an activated carbon impregnated with sulfate, molybdenum and at least one impregnate selected from the group consisting of copper and zinc, and a HEPA filter. Cartridges containing these adsorbents or adsorbents similar to them (in carbon tetrachloride activity and chemistry) have been discovered to be uniquely capable of filtering a broad range of toxic agents.
    Type: Grant
    Filed: August 22, 1996
    Date of Patent: February 3, 1998
    Assignee: Mine Safety Appliances Company
    Inventor: Zane N. Frund
  • Patent number: 5713137
    Abstract: According to the present invention, provided is a deodorization, sterilization and drying apparatus for bedding and clothing, which comprises: a warm air generator wherein an alkaline chlorine dioxide gas generator, within which is an alkaline ceramic body that is impregnated with an alkaline chlorine dioxide solution, is located along a flow path of the warm air that is generated in the warm air generator; an air mattress, a case and a bag for deodorizing, sterilizing and drying bedding and clothing by using the warm air from the warm air generator; and a hose for connecting the air mattress, etc., to the warm air generator, whereby the warm air from the warm air generator is brought into contact with the ceramic body so as to supply warm air that contains alkaline chlorine dioxide gas to the air mattress, etc. In addition to the above described arrangement, provided is a deodorization, sterilization and drying apparatus for bedding, etc.
    Type: Grant
    Filed: April 29, 1996
    Date of Patent: February 3, 1998
    Inventor: Sanai Fujita
  • Patent number: 5698165
    Abstract: An ozone filter comprising a paper carrier made of inorganic fiber and having a high porosity is disclosed. Supported by the carrier is a zeolite powder having an SiO.sub.2 /Al.sub.2 O.sub.3 molar ratio of not smaller than 15 and fine powder-like activated manganese dioxide having ozone decomposing capability. A process for producing the ozone filter is also disclosed. The ozone filter does not give off a foul smell even when used for a long period of time.
    Type: Grant
    Filed: August 24, 1995
    Date of Patent: December 16, 1997
    Assignee: Nichias Corporation
    Inventors: Isao Terada, Shinichiro Arai
  • Patent number: 5681533
    Abstract: An environment decontaminating system has an air cleaning and deodorizing function. It includes a housing having an inlet and an outlet for passage of air. A DC high voltage dust collector and a dust catching filter are provided adjacent the inlet. An ozone generator is positioned adjacent the filter. An odor/ozone turbulent mixing plate is positioned adjacent the ozone generator. A deodorizing catalyst is positioned adjacent the mixing plate. An acid gas absorbent, a suction scavaging fan, and an ozone concentration sensor are positioned adjacent an outlet of the housing.
    Type: Grant
    Filed: October 30, 1995
    Date of Patent: October 28, 1997
    Assignee: Yushin Engineering
    Inventor: Tsutomu Hiromi
  • Patent number: 5650126
    Abstract: A deodorizing lamp comprises a lamp unit and a titanium oxide film coating the glass surface of the lamp unit and optionally at least one metal selected from among iron, platinum, rhodium, ruthenium, palladium, silver, copper, zinc, and manganese deposited on the surface of the titanium oxide film. A method for the production of a deodorizing lamp comprises the steps of applying a titania sol or an aqueous hydrogen peroxide solution of titania gel to the glass surface of a lamp unit, drying the applied layer of titania sol or titania gel, firing the dried layer thereby forming a titanium oxide film on the glass surface, and optionally depositing at least one metal from among iron, platinum, rhodium, ruthenium, palladium, silver, copper, zinc, and manganese on the titanium oxide film.
    Type: Grant
    Filed: September 25, 1995
    Date of Patent: July 22, 1997
    Assignee: Agency of Industrial Science & Technology, Ministry of International Trade & Industry
    Inventors: Hiroshi Taoda, Eiji Watanabe
  • Patent number: 5635139
    Abstract: Apparatuses for treating gas streams containing variations in VOC concentration whereby the VOC's are destroyed in a combination non-catalytic/catalytic oxidation system are disclosed. A non-catalytic destruction matrix composed of inert ceramic materials that enhance process mixing and provide thermal inertia for process stability is used when VOC concentrations are high and a catalytic oxidizer is principally used when VOC concentrations are low. The exhaust from the non-catalytic destruction matrix is passed through the catalytic oxidizer to maintain proper catalytic oxidizer operating temperatures. Supplemental fuel and air are added as appropriate upstream or downstream of the non-catalytic oxidizer to maintain proper heat values in each portion of the system.
    Type: Grant
    Filed: September 13, 1995
    Date of Patent: June 3, 1997
    Assignee: Thermatrix, Inc.
    Inventors: Mark Holst, Richard J. Martin