Patents Assigned to E
  • Rotary nozzle device for emitting a water jet
    Patent number: 6155494
    Abstract: A rotary nozzle device containing an outer casing (5) having an internal chamber (10) with a liquid exit (11) and a lateral surface of revolution upstream of the exit (11), and a rotary nozzle (20) positioned within the internal chamber (10) and traversed by an axial conduit (21) for liquid passage, and having its upper end, into which the axial conduit opens, positioned against and closing the exit (11), its final portion (24) being inclined to the nozzle axis.
    Type: Grant
    Filed: November 13, 1998
    Date of Patent: December 5, 2000
    Assignee: Annovi E Reverberi S.R.L.
    Inventors: Fabrizio Fabbri, Filippo Cavallini
  • Break-fall device with improved braking
    Patent number: 6155384
    Abstract: Break-fall device of a type used in conjunction with a lifeline and carabiner hook or similar manner of attachment to a harness, having at least one floating cam and one fixed cam, both enclosed in an external metallic shell, to define a path for the lifeline which can be blocked by the floating cam in case of a fall. The device includes manual controlled rotation of the floating cam around its pivot in the direction opposite to that locking the lifeline.
    Type: Grant
    Filed: June 11, 1998
    Date of Patent: December 5, 2000
    Assignee: S. S. E. Sistemi Di Sicurezza Europa S.r.l.
    Inventor: Luca Paglioli
  • Anchoring fixture for holding a musical instrument
    Patent number: 6155743
    Abstract: An anchoring fixture for a musical instrument comprising a clamp socket with a platform, the platform having a hollow circular piece arranged on its bottom face, a through hole in its center position for communication with the hollow circular piece. A fixed clamping wall and a movable clamping piece are provided on a top face of the platform at its lateral edge. One end of the movable clamping piece is extended to form a protruded connecting rod, which is inserted in an arc groove channel in the fixed clamping wall. In the central portion of the fixed clamping wall and the movable clamping piece, a semi-circular recess is formed respectively, and an enhancing ring piece locates at an enclosed space formed by the semi-circular recesses.
    Type: Grant
    Filed: December 9, 1998
    Date of Patent: December 5, 2000
    Assignee: TAY-E Co., Ltd.
    Inventor: Erh-Chiang Chen
  • Halogenated hydrocarbons containing fluorine and processes for their manufacture
    Patent number: 6156943
    Abstract: Processes are disclosed for producing hydrohaloolefins having the formula CF.sub.2 .dbd.C(CH.sub.2 RF)CF.sub.3, the formula FRCF.dbd.C(CH.sub.2 RF)CF.sub.3 or the formula FRCF.dbd.C(CH.sub.2 RF)(CF.sub.2 RF) wherein each R is a difinctional group of the formula --C.sub.2 F.sub.2 XY-- where X and Y are attached to the same carbon, each X is H, Br, Cl or F and each Y is F or CF.sub.3. The processes involve reacting (CF.sub.3).sub.2 C.dbd.CH.sub.2 or certain olefinic adducts thereof with a second olefm of the formula CF.sub.2 .dbd.CXY in the liquid phase in the presence of a Lewis acid catalyst selected from the group consisting of antimony pentafluoride and aluminum chlorofluoride.Also disclosed is 1,1,2,2,-tetrafluoro-3,3-bistrifluoromethylcyclobutane and a process for its production which involves reacting (CF.sub.3).sub.2 C.dbd.CH.sub.2 with CF.sub.2 .dbd.CF.sub.
    Type: Grant
    Filed: October 30, 1998
    Date of Patent: December 5, 2000
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Viacheslav Alexandrovich Petrov
  • Treatment of deagglomerated particles with plasma-activated species
    Patent number: 6156114
    Abstract: A method for treating the surface of substantially each deagglomerated particle of an array of easily agglomerated particles by contacting deagglomerated particles with a plasma-activated gas species and modifying the surfaces of the deagglomerated particles to aid subsequent incorporation of the particles into a matrix composition; the module for deagglomerating and dispersing the particles into the plasma-activated gas; the apparatus that comprises the deagglomeration module (322) and a reaction chamber (20) in which the particles are treated with the plasma-activated gas; the method for deagglomerating particles that may reagglomerate after plasma treatment; and a color composition containing plasma-treated pigment particles.
    Type: Grant
    Filed: August 4, 1998
    Date of Patent: December 5, 2000
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Timothy Allan Bell, Wronald Scott Best, Michael Patrick Chouinard, Paul Francis Herman, James Lewis Hohman, Jr., Laurence J. Levase, Tyau-Jeen Lin, An-Gong Yeh, Thomas William Harding
  • Nitrous oxide compositions
    Patent number: 6156225
    Abstract: This invention relates to compositions that include nitrous oxide and at least one of trifluoromethane, difluoromethane, tetrafluoroethane, pentafluoroethane, perfluoroethane or ethane. These compositions are useful as refrigerants, cleaning agents, expansion agents for polyolefins and polyurethanes, refrigerants, aerosol propellants, heat transfer media, electronic gases, plasma etchants, gaseous dielectrics, fire extinguishing agents, power cycle working fluids, polymerization media, particulate removal fluids, carrier fluids, buffing abrasive agents, and displacement drying agents.
    Type: Grant
    Filed: March 19, 1998
    Date of Patent: December 5, 2000
    Assignee: E. I du Pont de Nemours and Company.
    Inventors: Barbara Haviland Minor, Donald Bernard Bivens, Clifford Keith Rice, James Richard Sand
  • Tetrafluoroethylene and n-alkyl-trifluorovinyl ether copolymer compositions having discreet elastomeric and crystalline sections
    Patent number: 6153681
    Abstract: Compositions which act as thermoplastic elastomers are disclosed which have an elastomeric polymer portion and a crystalline polymer portion. Also disclosed is the manufacture of thermoplastic elastomers from tetrafluoroethylene, and selected trifluorovinyl alkyl ethers (and optionally other monomers) by using a free radical polymerization in aqueous medium to produce an elastomeric copolymer of tetrafluoroethylene and one or more selected trifluorovinyl alkyl ethers, and thereafter using a free radical polymerization to form a fluorinated crystalline polymer portion. The fluorinated thermoplastic elastomer has excellent physical properties and may be used to make molding such as gaskets and seals.
    Type: Grant
    Filed: July 8, 1998
    Date of Patent: November 28, 2000
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Paul G. Bekiarian
  • Apparatus and method for food surface microbial intervention and pasteurization
    Patent number: 6153240
    Abstract: An apparatus and method for microbial intervention and pasteurization of food product surfaces, especially produce. The apparatus comprises a chamber, a steam generator, a controller, a timer, a power source, and a temperature sensor. The temperature sensor, along with the timer, is used to control the exposure of food products to steam. After a controlled period of steam application, a chilled water source is used to bathe the food products. The method includes the steps of placing food in the chamber, adding steam to the chamber, continuing to add steam until the surface of the food is greater than a first preselected temperature, maintaining the surface temperature by the continued application of steam for a period of about 60 seconds or until it is greater than a second preselected temperature, and then bathing the outer surface of the food with chilled water for about 60 seconds.
    Type: Grant
    Filed: December 15, 1999
    Date of Patent: November 28, 2000
    Assignee: Dennis E. Tottenham
    Inventors: Dennis E. Tottenham, David E. Purser
  • Cardable blends of dual glass fibers
    Patent number: 6151763
    Abstract: Dual glass fibers can be processed into coherent webs and felts by first blending the dual glass fibers with an equal or greater amount of uncrimped fibers. Optionally, other crimped fibers can be added without significant impact on processibility.
    Type: Grant
    Filed: October 7, 1999
    Date of Patent: November 28, 2000
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Reginald Thomas Kruszewski
  • Flash spinning process
    Patent number: 6153134
    Abstract: A spinning process using azeotropic compounds as spin agents having essentially zero ozone depletion potential and that are either non-flammable or of very low flammability.
    Type: Grant
    Filed: December 15, 1998
    Date of Patent: November 28, 2000
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Hyunkook Shin, Roger Keith Siemionko, Nanlin Deng
  • System and method for grazing television channels from an electronic program guide
    Patent number: 6154203
    Abstract: A television program guide the uses a picture-in-picture (PIP) setup to allow the user to view an active television channel while browsing the channel guide.
    Type: Grant
    Filed: May 4, 1998
    Date of Patent: November 28, 2000
    Assignee: E Guide, Inc.
    Inventors: Henry C. Yuen, Roy J. Mankovitz, Daniel S. Kwoh, Elsie Y. Leung
  • Wastewater treatment method and apparatus
    Patent number: 6153094
    Abstract: The treatment system is for use with septic tank effluent. Water is passed over polyurethane foam blocks, arranged in a heap so that air can circulate freely around the blocks. The size of the foam cells is small enough that water soaks into the blocks and is retained therin. The foam is soft and easily deformed. At the points of block-to-block engagement, the blocks deflect and conform to each other, giving rise to a large contact area through which water can pass between blocks.
    Type: Grant
    Filed: May 4, 1999
    Date of Patent: November 28, 2000
    Assignee: E. Craig Jowett
    Inventors: E. Craig Jowett, Michaye Louise McMaster
  • Optical probe having an imaging apparatus
    Patent number: 6153873
    Abstract: An imaging apparatus includes a collection of optical elements arranged in a predetermined sequence and cooperable to define a dark-field optical arrangement and a bright-field optical arrangement. The dark-field optical arrangement and a bright-field optical arrangement may be defined along the same or different optical path(s). At least one of the optical elements is operative to enable at least one of the dark field or the bright-field optical arrangements. In a first embodiment said one optical element is movable from a first to a second position to enable either the dark-field or the bright-field optical arrangement. In a second embodiment said one optical element is operable to enable simultaneously both the dark-field and the bright-field optical arrangements. Both opaque objects and phase objects in a fluid stream are able to be detected and quantified.
    Type: Grant
    Filed: May 20, 1998
    Date of Patent: November 28, 2000
    Assignee: E. I. duPont de Numours and Company
    Inventor: William Edward Wolf
  • Polymerization of propylene
    Patent number: 6150482
    Abstract: Propylene may be polymerized by contacting it with certain iron complexes of selected 2,6-pyridinecarboxaldehydebis(imines) and 2,6-diacylpyridinebis(imines). The polymers produced are useful as molding resins.
    Type: Grant
    Filed: January 12, 1998
    Date of Patent: November 21, 2000
    Assignees: E. I. du Pont de Nemours and Company, University of North Carolina
    Inventors: Maurice S. Brookhart, Brooke L. Small
  • High dielectric constant flexible polyimide film and process of preparation
    Patent number: 6150456
    Abstract: A flexible, high dielectric constant polyimide film composed of either a single layer of an adhesive thermoplastic polyimide film or a multilayer polyimide film having adhesive thermoplastic polyimide film layers bonded to one or both sides of the film and having dispersed in at least one of the polyimide layers from 4 to 85 weight % of a ferroelectric ceramic filler, such as barium titante or polyimide coated barium titanate, and having a dielectric constant of from 4 to 60. The high dielectric constant polyimide film can be used in electronic circuitry and electronic components such as multilayer printed circuits, flexible circuits, semiconductor packaging and buried film capacitors.
    Type: Grant
    Filed: May 14, 1999
    Date of Patent: November 21, 2000
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Yueh-Ling Lee, Gary Min
  • Polymer recovery
    Patent number: 6150498
    Abstract: Methods for devolatilizing polymer solutions have been invented which include, in certain aspects, dissolving a viscous polymer in a solvent forming a polymer-solvent solution, introducing the polymer-solvent solution into a thermal dryer, heating or cooling the polymer-solvent solution in the thermal dryer forming product polymer with solvent removed and separated solvent (which may include other residuals), the separated solvent with other residuals if present vaporizing in the thermal dryer forming a vapor, removing the vapor from the thermal dryer, and discharging product polymer from the thermal dryer.
    Type: Grant
    Filed: July 3, 1997
    Date of Patent: November 21, 2000
    Assignees: The Dow Chemical Company, E. I. du Pont de Nemours and Company
    Inventors: Richard C. Abel, Jr., Michael E. Rowland, Robert B. Combs, Jerry W. Soape, Stanley W. Smith
  • Process using CF.sub.2 I.sub.2 and olefins for producing diiodo fluorocompounds, and products thereof
    Patent number: 6150565
    Abstract: A process is disclosed for making diiodofluorinated compounds of the formula ICF.sub.2 (A).sub.n I wherein n is an integer of at least 1 and each A is CXYCQZ wherein each X, Y, Q, and Z are each independently selected from the group consisting of H, F, Cl, R.sub.F and OR.sub.F, and R.sub.F is a perfluoroalkyl group or perfluorinated polyether group wherein one or more of the fluorines is optionally replaced by a substituent selected from the group consisting of chlorine, bromine, iodine, hydrogen, sulfonyl fluoride, nitrile, ester, acyl chloride and acyl fluoride. The process involves reacting an olefin of the formula CXY.dbd.CQZ with CF.sub.2 I.sub.2 at a temperature in the range of from about 120.degree. C. to 240.degree. C.Diiodofluorinated compounds of the formula ICF.sub.2 CH.sub.2 CHR.sub.F I are also disclosed.
    Type: Grant
    Filed: September 8, 1998
    Date of Patent: November 21, 2000
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Zhen-Yu Yang
  • Method for recovering methyl acetate and residual acetic acid in the production acid of pure terephthalic acid
    Patent number: 6150553
    Abstract: A method for recovering methyl acetate and residual acetic acid in a two-stage process for producing pure terephthalic acid having a first oxidation stage and a second purification stage.
    Type: Grant
    Filed: February 24, 1999
    Date of Patent: November 21, 2000
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: William David Parten
  • Method and apparatus for preventing scaling in electrodeionization units
    Patent number: 6149788
    Abstract: A method and apparatus is provided for inhibiting scaling in an electrodeionization system and, more particularly, for increasing tolerance to hardness in the feed water to an electrodeionization unit by inhibiting precipitation of scale-forming metallic cations contained in the feed water and thereby increasing efficiencies of the electrodeionization system. Water to be purified is passed through an electrodeionization unit in which the flow in the diluting compartment is countercurrent to the flow in the concentrating compartment. This is to impede the migration of scale-forming metallic cations from the diluting compartment, through the cation exchange membrane, into the concentrating compartment and towards the concentrating compartment side of the anion exchange membrane, thereby preventing scale formation on the anion exchange membrane.
    Type: Grant
    Filed: October 16, 1998
    Date of Patent: November 21, 2000
    Assignee: E-Cell Corporation
    Inventors: David Florian Tessier, Robert Glegg, John H. Barber
  • Front surface of a stampless envelope
    Patent number: D434438
    Type: Grant
    Filed: June 4, 1999
    Date of Patent: November 28, 2000
    Assignee: E-Stamp Corporation
    Inventor: Salim G. Kara