Patents Assigned to E
  • Gas management system for closely-spaced laydown jets
    Patent number: 5123983
    Abstract: An improvement is disclosed for reducing or even preventing interferences or interactions between adjacent, closely-spaced laydown jets utilized in a fibrous sheet laydown process. The improvement comprises positioning an inverted "V-shaped" baffle between adjacent, closely-spaced laydown jets so that the turbulent gas streams produced by each laydown jet are diverted and vented away from the area of sheet laydown on a moving collection belt. The baffle vents the fountain of gas produced by the collision of adjacent laydown jets in a cross-direction to that of the direction of belt movement.
    Type: Grant
    Filed: August 24, 1990
    Date of Patent: June 23, 1992
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Larry R. Marshall
  • Safety needle assembly
    Patent number: 5122121
    Abstract: A safety needle for use in the vascular system. The needle has a first end adapted to be placed in the vascular system and a second end with a stopper and adapted to pass a guide wire. The needle has a port positioned between the first and second needle ends. The port is adapted to be connected to a blood collection device. The blood which enters the first end of the needle is diverted through the port to the blood collection device which avoids having the blood reach the second end of the needle.
    Type: Grant
    Filed: August 30, 1990
    Date of Patent: June 16, 1992
    Assignee: E-Z-EM, Inc.
    Inventors: Thomas A. Sos, Eamonn Hobbs
  • Simulated moving bed chromatographic separation
    Patent number: 5122275
    Abstract: A method and apparatus for separation of an extract component from a raffinate component in a simulated moving bed chromatographic separation train system. The system includes a plurality of beds, packed with a sorbent material, connected to form a closed recycle loop. Inlets to the train are provided for a feed stream and a desorbent stream along with outlets for removal of a raffinate stream and an extract stream. Increased product throughput and yield are obtained by intermittantly introducing and withdrawing the various streams to the train while continuously recycling a portion of the fluid in the system.
    Type: Grant
    Filed: September 5, 1989
    Date of Patent: June 16, 1992
    Assignee: A. E. Staley Manufacturing Company
    Inventor: John F. Rasche
  • Table saw gauge
    Patent number: 5121553
    Abstract: A table saw gauge includes a body positionable on the table top of a table saw and having a first scale for determining the saw blade height, a second scale for determining the saw blade angle, and a third scale for determining the distance from the saw blade to an adjacent fence. A blade is pivotally supported on the body and includes a first armature for engaging the uppermost tooth of the saw blade to determine saw blade height and second armature engageable with the side of the saw blade to determine saw blade angle. Pointers mounted on the body will aid cooperation with the first and second scales mounted on the body to indicate the height of the saw blade and the angle of the saw blade, respectively.
    Type: Grant
    Filed: July 1, 1991
    Date of Patent: June 16, 1992
    Assignee: E. F. Boerder Company
    Inventor: Eugene F. Boerder
  • Drinking water supply container having a removably mounted filter device
    Patent number: 5122272
    Abstract: A container assembly for holding a supply of drinking liquid includes a watertight container. A removable filter device extends into the container through an opening at the top. The filter device comprises an elongated cylindrical member having an inner wall divides the area inside of an upper chamber and a lower chamber and forms a sipping tube for accessing the lower chamber through the upper chamber water filter is disposed in the lower chamber. In using the container, air is drawn in through the upper chamber and drinking liquid is drawn out through the sipping straw by suction.
    Type: Grant
    Filed: December 12, 1990
    Date of Patent: June 16, 1992
    Assignee: E. Charles Iana
    Inventors: E. Charles Iana, Michael R. McCray
  • Coating composition of polyesterurethane and multifunctional epoxy compound
    Patent number: 5122552
    Abstract: A coating composition particularly useful in for forming exterior finishes on the exterior of vehicle parts, the binder of the composition which is in an organic liquid carrier is a polyesterurethane and a multifunctional epoxy compound; whereinthe polyesterurethane is formed by reacting a hydroxy functional polyester with a hydroxy containing carboxylic acid and an organic polyisocyanate andthe multifunctional epoxy resin is an aliphatic, cycloaliphatic or aromatic epoxy resin; coated parts, laminates and composite structures made with the coating composition are also part of the invention.
    Type: Grant
    Filed: December 12, 1989
    Date of Patent: June 16, 1992
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Jeffery W. Johnson
  • Overlay proofs comprising precolored and toned images
    Patent number: 5122437
    Abstract: Provided is a multilayer, multicolor overlay proof comprising at least one precolored overlay image and at least one toned overlay image, as well as a process for preparing such an overlay proof.
    Type: Grant
    Filed: October 31, 1990
    Date of Patent: June 16, 1992
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Jon W. Matthews, Jeffrey W. Milner, Harvey W. Taylor, Jr.
  • Nylon compositions for blowmolding
    Patent number: 5122570
    Abstract: It has now been found that a unique combination of additives makes semi-crystalline polyamides readily processible by extrusion blowmolding to make hollow, stiff parts of various shapes. The compositions consist essentially of semicrystalline polyamide, a selected toughening agent and an anhydride-rich ethylene copolymer.
    Type: Grant
    Filed: January 19, 1989
    Date of Patent: June 16, 1992
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Pallatheri M. Subramanian
  • Thick film NTC thermistor compositions
    Patent number: 5122302
    Abstract: Thick film thermistor paste comprising an admixture of finely divided particles consisting essentially of a) a conductive phase consisting of (1) at least one oxide of a platinum group metal having a positive TCR, and (2) Co.sub.2 RuO.sub.4, b) an inorganic binder having a Dilatometer softening point of 450.degree.-750.degree. C. which contains transition metal oxides and is free of alkali metal oxides, c) a filler selected from vitreous silica, zircon and mixtures thereof, all of (a) through (c) being dispersed in, d) an organic medium.
    Type: Grant
    Filed: September 30, 1991
    Date of Patent: June 16, 1992
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Jacob Hormadaly
  • Pipe repair or joining collar
    Patent number: 5121946
    Abstract: A pipe repair or joining collar comprising a pair of rigid arcuate casing members (10) which may be drawn together around a damaged pipe or a pair of pipe ends with the interposition of one or more elastomeric arcuate seals (13) and wedges (17) located between the casing members and the seals and adapted to slide inwardly and generally tangentially to force the seals radially inwards to ensure sealing engagement with the pipe or pipe ends, mutually abutting longitudinal resilient sealing strips (16) projecting, at least in part, from opposed faces of the wedges (17) in a manner such that in at least one region of each pair one of the sealing strips is substantially flush with its associated face whilst the other projects from it so that during assembly the projecting strip may ride laterally onto the flush strip to ensure lateral alignment of the casing members.
    Type: Grant
    Filed: August 31, 1990
    Date of Patent: June 16, 1992
    Assignee: E. Peart & Company Limited
    Inventor: Robert W. Jardine
  • Polyethylene plexifilamentary film-fibril sheet
    Patent number: 5122412
    Abstract: A metallized high specular gloss polyethylene plexifilamentary film-fibril sheet with very low emissivity is made by a process of calendering a polyethylene film-fibril sheet between a smooth metal roll and a soft, resilient roll to form a sheet of high specular gloss, followed by vacuum metallization of the smooth high specular gloss surface. Such metallized sheets are useful as radiant barriers or roof liners for energy savings purposes.
    Type: Grant
    Filed: September 30, 1991
    Date of Patent: June 16, 1992
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: David C. Jones, Chi-Chang Lee
  • Method and apparatus for determining particle size distribution and concentration in a suspension using ultrasonics
    Patent number: 5121629
    Abstract: The present invention relates to method and apparatus for determining the size distribution and concentration of particles in suspensions, emulsions or aerosols utilizing ultrasonic excitation. The invention is applicable over a wide range of particle sizes (0.01 to 1,000 microns) and concentrations (0.1% to 70% by volume). The present invention is particularly useful for industrial on-line measurement and control of highly concentrated slurries. The method comprises the steps of directing ultrasonic waves through the suspension at selected discrete frequencies over a selected frequency range and measuring the attenuation of the ultrasonic waves passing through the suspension for each of the selected discrete frequencies to thereby obtain a measured attenuation spectrum for the suspension over the selected frequency range.
    Type: Grant
    Filed: November 13, 1989
    Date of Patent: June 16, 1992
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Felix Alba
  • Coating composition of polyesterurethane and polyisocyanate crosslinking agent
    Patent number: 5122560
    Abstract: A coating compostion particularly useful in for forming exterior finishes on the exterior of vehicle parts, the binder of the composition which is in an organic liquid carrier is a polyesterurethane and a multifunctional organic polyisocyanate crosslinking agent; wherein the polyesterurethane is formed by reacting a hydroxy functional polyester with a hydroxy containing carboxylic acid and an organic polyisocyanate andthe multifunctional organic polyisocyanate crosslinking agent has at least three reactive isocyanate groups and may be blocked with a blocking agent; coated parts, laminates and composite structures made with the coating composition are also part of the invention.
    Type: Grant
    Filed: December 12, 1989
    Date of Patent: June 16, 1992
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Jeffery W. Johnson
  • Poly[2,2'-bis(trifluoromethyl)benzidine terephthalamide] spin dopes and fibers therefrom
    Patent number: 5122416
    Abstract: Anisotropic solutions are prepared from poly]2,2'-bis(trifluoromethyl)benzidine terephthalamide] in amide solvents containing certain chlorides in specified amounts. Crystalline fibers are prepared from the polymers.
    Type: Grant
    Filed: June 13, 1990
    Date of Patent: June 16, 1992
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Robert S. Irwin
  • Method for fabricating an integral three-dimensional object from layers of a photoformable composition
    Patent number: 5122441
    Abstract: An apparatus and method for fabricating integral three-dimensional objects from successive layers of photoformable compositions by exposing the layers of the composition through a semi-permeable film that allows creation of release coatings on the side of said film facing said composition.
    Type: Grant
    Filed: October 29, 1990
    Date of Patent: June 16, 1992
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: John A. Lawton, Jerome T. Adams
  • Support for an external rearview mirror for motor vehicles
    Patent number: 5120015
    Abstract: A support for an external rear view mirror for motor vehicles comprises a support rod having an intermediate vertical portion for supporting the mirror and upper and lower transverse portions extending substantially horizontally from opposite ends of said vertical portion and first and second base elements connected with respective free ends of the upper and lower transverse portions for attaching the support to a vehicle body. One of the first and second base elements includes an arrangement for pivotally attaching a respective free end of one of the upper and lower transverse portions of the support rod with one base element and another one of the first and second base elements include an arrangement for fixedly attaching a respective free end of another one of the upper and lower transverse portions of the support rod to another one base element.
    Type: Grant
    Filed: September 16, 1991
    Date of Patent: June 9, 1992
    Assignee: Metagal Industria E Comercia Ltda.
    Inventor: Antonio F. do Espirito Santo
  • Polyester process comprising the addition of a tetraalkyl zirconate catalyst
    Patent number: 5120822
    Abstract: In a process for preparing polyesters by mixing at least one non-vicinal aliphatic diol, e.g., 1,4-butanediol or its ester-forming equivalents with at least one dicarboxylic acid, e.g., terephthalic acid or its ester-forming equivalents in the presence of a tetraalkyl titanate catalyst, and adding to the mixture a tetraalkyl zirconate catalyst in amounts such that the ratio of titanium atoms to zirconium atoms is 1.3:1 to 9:1, preferably 1.9:1 to 4.6:1.
    Type: Grant
    Filed: August 21, 1990
    Date of Patent: June 9, 1992
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Guenther K. Hoeschele, Richard H. McGirk
  • Positive-working photosensitive electrostatic master
    Patent number: 5120629
    Abstract: High resolution photosensitive electrostatic master which forms conductive exposed image areas upon imagewise exposure comprising an electrically conductive substrate bearing a photosensitive layer consisting essentially of at least one acid labile compound which decomposes to form acid, and a photoinitiator or photoinitiating system which upon exposure generates a catalytic amount of a strong acid. A xeroprinting process from producing positive images in said photosensitive layer of the master is also disclosed. The master is useful in the graphic arts field. e.g., making color proofs, preparation of printing circuit boards, resists, solder masks, etc.
    Type: Grant
    Filed: April 10, 1990
    Date of Patent: June 9, 1992
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Richard D. Bauer, Catherine T. Chang
  • Fluorinated sulfones/ketones for nonlinear optics
    Patent number: 5120876
    Abstract: This invention relates to optical elements capable of second harmonic generation and novel compositions for use in such optical elements comprising polar molecules placed in noncentrosymmetric configuration wherein such optical element has an electron donor moiety linked through a conjugated bonding moiety to an electron acceptor moiety which consists of a selected fluorinated sulfone, fluorinated ketone, fluorinated vinyl sulfone or fluorinated alkyl vinyl sulfone.
    Type: Grant
    Filed: February 28, 1990
    Date of Patent: June 9, 1992
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Lap T. Cheng, Andrew E. Feiring, Wilson Tam
  • Electric cooking plate
    Patent number: D326982
    Type: Grant
    Filed: November 27, 1989
    Date of Patent: June 16, 1992
    Assignee: E. G. O. Elektro-Gerate Blanc u. Fischer
    Inventor: Felix Schreder