Abstract: A system and auger assembly for conveying a solid granular material includes a rotatable auger, a first auger tube and a second auger tube telescopically recieved in the first auger tube. A drive mechanism longitudinally moves the second tube between a first position in which the second tube extends from the first tube and over a remaining portion of the length of the auger, and a second position in which the second tube is telescopically recieved within the first auger tube.
Abstract: A bristle sub-assembly includes first and second base strings and a plurality of polymeric monofilaments connected to and extending between the first and second base strings. The polymeric monofilaments form a first arched row when the first and second base strings are brought together. Several types and configurations of brushes are made using either arched bristles or combinations of arched and straight bristles.
Type:
Grant
Filed:
February 9, 1999
Date of Patent:
July 17, 2001
Assignee:
E. I. du Pont de Nemours and Company
Inventors:
Mark Stephen Edwards, Wayne Hugh Marshall, Roberto Bucker
Abstract: This invention relates to a process for the production of vinyl fluoride by dehydrofluorination of 1,1-difluoroethane in the presence of a catalyst containing magnesium and/or zinc.
Type:
Grant
Filed:
May 18, 1999
Date of Patent:
July 17, 2001
Assignee:
E. I. du Pont de Nemours and Company
Inventors:
Mario Joseph Nappa, V. N. Mallikarjuna Rao
Abstract: A process for the preparation of at least one spherically shaped porous microcomposite is provided which microcomposite comprises a perfluorinated ion-exchange polymer containing pendant sulfonic and/or carboxylic acid groups entrapped within and highly dispersed throughout a network of inorganic oxide, wherein the weight percentage of the perfluorinated ion-exchange polymer in the microcomposite is from about 0.1 to about 90 percent, and wherein the size of the pores in the microcomposite is about 0.
Abstract: A process for the Lewis acid catalyzed addition of trifluoromethanes across the carbon-carbon double bond of fluoroolefins is disclosed. A process for isomerization of monohaloperfluoro alkanes is also disclosed.
Type:
Grant
Filed:
March 29, 2000
Date of Patent:
July 17, 2001
Assignee:
E. I. duPont de Nemours and Company
Inventors:
Carl George Krespan, Viacheslav Alexandrovich Petrov
Abstract: Disclosed herein are novel electrophoretic displays and materials useful in fabricating such displays. In particular, novel encapsulated displays are disclosed. Particles encapsulated therein are dispersed within a suspending, or electrophoretic, fluid. This fluid may be a mixture of two or more fluids or may be a single fluid. The displays may further comprise particles dispersed in a suspending fluid, wherein the particles contain a liquid. In either case, the suspending fluid may have a density or refractive index substantially matched to that of the particles dispersed therein. Finally, also disclosed herein are electro-osmotic displays. These displays comprise at least one capsule containing either a cellulosic or gel-like internal phase and a liquid phase, or containing two or more immiscible fluids. Application of electric fields to any of the electrophoretic displays described herein affects an optical property of the display.
Type:
Grant
Filed:
August 27, 1998
Date of Patent:
July 17, 2001
Assignee:
E Ink Corporation
Inventors:
Jonathan D. Albert, Barrett Comiskey, Joseph M. Jacobson, Libing Zhang, Andrew Loxley, Robert Feeney, Paul Drzaic, Ian Morrison
Abstract: The functionalization of compounds containing carbon-hydrogen bonds utilizing platinum compounds in Shilov-type reactions is improved by using hydrogen peroxide or selected Pt[IV] compounds as an oxidant.
Type:
Grant
Filed:
January 11, 2000
Date of Patent:
July 17, 2001
Assignee:
E. I. du Pont de Nemours and Company
Inventors:
Nadine Henriette Caroline De Vries, Donald Irwin Garnett, David Lincoln Thorn
Abstract: An encapsulated electrophoretic display is made of at least one display element. Each display element includes at least one capsule. The capsule contains at least two substantially immiscible fluids. The first fluid includes an additive, and the second fluid contains a plurality of particles.
Abstract: This invention relates to an isolated nucleic acid fragment encoding a protein kinase. The invention also relates to the construction of a chimeric gene encoding all or a portion of the protein kinase, in sense or antisense orientation, wherein expression of the chimeric gene results in production of altered levels of the protein kinase in a transformed host cell.
Abstract: Substituted cyclopentenes, such as alkyl cyclopentenes, are polymerized by selected &agr;-imine complexes of nickel and palladium. The polymers are useful as molding resins or elastomers. Also disclosed herein are novel catalysts for the polymerization of cyclopentenes to form novel higher melting homopolycyclopentenes.
Type:
Grant
Filed:
March 26, 1999
Date of Patent:
July 10, 2001
Assignee:
E. I. du Pont de Nemours and Company
Inventors:
Stephan James McLain, Elizabeth Forrester McCord, Alison Margaret Anne Bennett, Steven Dale Ittel, Karl Jeffrey Sweetman, Mark F. Teasley
Abstract: An optical transmission system has been designed to optimize the use of the spectral emission range of rare-earth-doped fiber amplifiers. The system includes a wide band of channels in the spectral emission range of erbium-doped fiber amplifiers, which is split into two sub-bands, a low sub-band corresponding to the low end of the range and a high sub-band corresponding to the high end of the range. The two sub-bands are separately amplified and optimized, and then recombined without significant competition between the two sub-bands. In addition, an equalizing filter, such as a specialized Bragg filter or interferential filter, is applied to the low sub-band instead of the entire band of channels, thus greatly reducing any equalization need or unequalization effects.
Abstract: An implantable substrate sensor has electronic circuitry and electrodes formed on opposite sides of a substrate. A protective coating covers the substrate, effectively hermetically sealing the electronic circuitry under the coating. Exposed areas of the electrodes are selectively left uncovered by the protective coating, thereby allowing such electrodes to be exposed to body tissue and fluids when the sensor is implanted in living tissue. The substrate on which the electronic circuitry and electrodes are formed is the same substrate or “chip” on which an integrated circuit (IC) is formed, which integrated circuit contains the desired electronic circuitry. Such approach eliminates the need for an hermetically sealed lid or cover to cover hybrid electronic circuitry, and allows the sensor to be made much thinner than would otherwise be possible. In one embodiment, two such substrate sensors may be placed back-to-back, with the electrodes facing outward.
Type:
Grant
Filed:
June 19, 1998
Date of Patent:
July 10, 2001
Assignee:
Alfred E. Mann Foundation
Inventors:
Joseph H. Schulman, Charles L. Byers, John C. Gord, Rajiv Shah, Lyle Dean Canfield
Abstract: There is provided an optical wavelength converter which allows the rapid and efficient shifting of information modulated on a light signal of one wavelength to a light signal of a second wavelength without the negative effects of noise and other disturbances which have proven to be problems in the prior art. The device splits a CW probe signal of a first wavelength into two components, which propagate with opposite orientations through a Kerr leg. Also propagating in the Kerr leg is a modulated drive signal at a second wavelength. These signals interact in the Kerr leg, and are recombined at an output coupler so as to create interference between the two probe components. An intensity modulated probe signal is output.
Type:
Grant
Filed:
May 4, 2000
Date of Patent:
July 10, 2001
Assignee:
Pirelli Cavi e Sistemi S.p.A.
Inventors:
Pierpaolo Boffi, Lucia Marazzi, Mario Martinelli
Abstract: Provided is a selective hydrogenation process for producing aminonitriles by contacting the corresponding dinitriles with a hydrogen-containing fluid in the presence of a hydrogenation catalyst, a solvent and a cyanide compound.
Type:
Grant
Filed:
April 24, 2000
Date of Patent:
July 10, 2001
Assignee:
E. I. du Pont de Nemours and Company
Inventors:
Alex Sergey Ionkin, Stanislaw Bogdan Ziemecki, Theodore Augur Koch, Mark Jay Harper
Abstract: A phase locked loop circuit includes an input comparator (2) capable of generating a deviation signal which can be used for driving an oscillator (5) so as to generate an output signal (CLKOUT) locked to the input signal. The oscillator (5) can operate according to a plurality of characteristics under the control of a control circuit (8) including searching circuits arranged to carry out a first search phase by scanning the family of characteristics admitted for the operation of the oscillator (5) by bands of progressively reduced width, according to a general, dichotomic procedure. Upon completion of this first search phase, additional circuits of fine search are destined to identify the optimum operating point, compensating possible fluctuations of the characteristics.
Type:
Grant
Filed:
November 12, 1999
Date of Patent:
July 10, 2001
Assignee:
CSELT - Centro Studi e Laboratori Telecomunicazioni
S.p.A.
Abstract: A trefoil for a rotary kiln is provided that has at least three spoke-like refractory legs. Each one of the legs extends radially outwardly from a center of the trefoil; spans approximately from the kiln shell to the center of the kiln; is pre-formed outside of the kiln for installation as a single-leg unit; and has a mating surface that preferably is uniform and even, thereby lacking interlocking features. The mating surfaces of the legs abut one another at the kiln center to provide mutual support. An alignment member, such as a pair of longitudinal angles, are welded to the kiln shell to position the legs. A corresponding method of installing the trefoil is disclosed that includes positioning and shimming the first two legs at the 4 o'clock position and 8 o'clock position, and installing the third leg at the 12 o'clock position.
Abstract: Aqueous dispersions of modified epoxy resins with a urethane and a urea group content of 5-250 mmol, based on 100 g solid content of the dispersion, containing one or more modified epoxy resins A) having an epoxy equivalent weight of 250-10,000, whereby the modified epoxy resins A) are the reaction product of A1) 43,0-86,0 wt-% of one or more epoxy compounds having at least 2 epoxy groups per molecule and an epoxy equivalent weight of 100 to 2000, A2) 10,0-25,0 wt-% of one or more aromatic polyols, A3) 2,0-12,0 wt-% of one or more aliphatic polyols and A4) 2,0-20,0 wt-% of one or more polyisocyanates.
Abstract: A modular assembly-type stand with earthquake-proof retention means, particularly for storage batteries and the like, comprising a supporting framework (1) provided with supporting side plates (2) joined by stringers (3,5) which form a region for supporting storage batteries and the like, and a retention frame (10) which is supported by the supporting framework (1) and can be secured against a median portion of the vertical extension of the storage batteries supported by the stringers. (FIG.
Abstract: An embodiment includes a gating device, a feedback device and a control device. Soliton pulses are received by the gating device, which detects and monitors a dispersive-wave between adjacent soliton pulses using a timing circuit. The timing circuit typically provides a gating signal offset in phase from the soliton pulses in order to trigger the gating device. Triggering the gating device allows the dispersive-wave to be accessed and monitored between adjacent soliton pulses. The feedback device, typically using detectors and processing circuitry, measures the energy of the soliton pulses and the energy of dispersive wave. The feedback determines a ratio of the energy levels as an indication of soliton-pulse transmission performance. The indication is provided to the control device as a feedback signal so that the control device can appropriately adjust characteristics of the soliton pulses and improve or optimize transmission performance.