Patents Assigned to E
  • Package and apparatus for dispensing electrical connectors
    Patent number: 4763780
    Abstract: A package for connectors and an apparatus for dispensing them. The package comprises an elongated tape or pair of tapes and a plurality of elongated connector tubes secured to and extending across the tape or tapes. The apparatus comprises a stand having upper and lower support members, a slide extending downwardly from the lower support member to a perch and a stepping device for advancing successive tubes along with support members to the slide. The connectors are removed from the tubes, descend the slide, and are picked up from the perch by a robot and installed in a printed circuit board.
    Type: Grant
    Filed: March 24, 1987
    Date of Patent: August 16, 1988
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Raymond S. Zebley, James H. Nichols, Jr., Bernard M. Ciosek, Jr.
  • Preparation of N,N-bis-trialkylsilyl carbodiimide
    Patent number: 4764630
    Abstract: A process for the preparation of N,N'-bis-trialkylsilyl carbodiimide, according to the following schematic diagram: ##STR1## where R.sub.1, R.sub.2 and R.sub.3 are each independently hydrogen, C.sub.1 -C.sub.20 alkyl, C.sub.3 -C.sub.12 cycloalkyl, C.sub.7 -C.sub.15 aralkyl, unsubstituted or substituted aryl or heteroaryl or alternatively, R.sub.1 and R.sub.2 together with the silicon atom form a 3 to 12 member heterocyclic group, optionally including oxygen, sulfur, or phosphorus as a second heteroatom, the process comprising: reacting a trialkylsilyl cyanide with cyanamide as a neat mixture to prepare the desired N,N'-bis-trialkylsilyl carbodiimide. The reaction is practically complete in one minute. The compounds so prepared are intermediates in the preparation of polymers and precursors of carbodiimide.
    Type: Grant
    Filed: December 2, 1987
    Date of Patent: August 16, 1988
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Khuong H. X. Mai, Ghanshyam Patil
  • Herbicidal sulfonamides
    Patent number: 4764204
    Abstract: This invention relates to novel herbicidally active sulfonylurea compounds substituted in the positions ortho to the sulfonylurea bridge, agriculturally suitable compositions thereof and methods of their use as preemergent or postemergent herbicides or plant growth regulants.
    Type: Grant
    Filed: July 27, 1987
    Date of Patent: August 16, 1988
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Mary A. Hanagan
  • Peripherally arrayed closure fastener system
    Patent number: 4762346
    Abstract: Peripheral locking system comprising a frame enclosing an aperture and a closure for the aperture having a polymeric member extending around a portion of the perimeter of the aperture and mounted in a track, designed to lock the closure at at least two points upon movement of the polymeric member.
    Type: Grant
    Filed: July 20, 1987
    Date of Patent: August 9, 1988
    Assignee: E. I. Du Pont de Nemours and Comapny
    Inventor: William J. King
  • Well casing connection
    Patent number: 4762344
    Abstract: A well pipe connection wherein the ends of the pipes have complementary sealing surfaces and are joined together by means of an internally threaded tubular connector that engages with corresponding threads on each of the pipe ends. One of the pipe ends has threads of a pitch that is greater than the pitch of the threads on the other pipe end, and the connector threads have corresponding thread pitches. The disclosed arrangement permits the connection to be assembled to the point short of relative sliding movement between the complementary sealing surfaces on the pipe ends and final tightening is accomplished by restraining the respective pipes from relative rotation while rotating the connector to draw the two pipe ends together into compressive sealing engagement without relative sliding in order to prevent galling of the sealing surfaces.
    Type: Grant
    Filed: February 6, 1987
    Date of Patent: August 9, 1988
    Assignee: Lee E. Perkins
    Inventors: Lee E. Perkins, James J. Petrella
  • Analysis device
    Patent number: 4762683
    Abstract: A centrifugal analysis device in which film capillaries communicate with peripheral cells, with a hydrophilic capillary providing the cell inlet and a hydrophobic capillary providing the cell outlet.
    Type: Grant
    Filed: September 16, 1986
    Date of Patent: August 9, 1988
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: William A. Romanauskas
  • Trehalose as stabilizer and tableting excipient
    Patent number: 4762857
    Abstract: An improved method for preparing tablets useful in diagnostic and therapeutic applications, utilizing trehalose as an excipient and stabilizer, is provided.
    Type: Grant
    Filed: April 23, 1987
    Date of Patent: August 9, 1988
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Ernest Bollin, Jr., Mark G. Fletcher
  • Photoreactive benzoylphenylalanines and related peptides
    Patent number: 4762881
    Abstract: Provided is a benzoylphenylalanine of the formula: ##STR1## wherein ##STR2## is in the m or p position; and Pr is a protecting group which is easily cleavable in the presence of a peptide bond by a mild acid or base.This benzoylphenylalanine group is incorporated into a peptide chain which can be attached to a solid substrate having a reactive hydrogen by exposure to low energy ultraviolet light.
    Type: Grant
    Filed: January 9, 1987
    Date of Patent: August 9, 1988
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: James C. Kauer
  • Means for disposal of articles by flushing and ostomy pouches particularly suited for such disposal
    Patent number: 4762738
    Abstract: Flexible, soft objects such as ostomy pouches, wound dressings, bandages, diapers, etc. can be flushed down a conventional toilet by covering the article with a sheet of material which rapidly becomes slimy or exudes a slimy material on contact with the water in a toilet bowl or by adding such materials directly to the bowl. An ostomy pouch constructed from materials particularly suited for disposal in a toilet bowl is also disclosed. The pouch is constructed from laminates of water swellable, cold water insoluble films and water resistant tissue paper.
    Type: Grant
    Filed: December 22, 1986
    Date of Patent: August 9, 1988
    Assignee: E. R. Squibb & Sons, Inc.
    Inventors: Denis E. Keyes, Marvin S. Aronoff
  • Pipe machining apparatus
    Patent number: 4762038
    Abstract: A pipe machining apparatus having a tool carrier rotatable about a frame mounted externally of a pipe, with the frame being formed of two semiannular sections which are releasably held together by connection devices including coacting pin and latch structures which are effectively positioned by a member operable from the side of the frame. The tool carrier mounts at least one tool head having a tool slide for a tool movable radially of the pipe. The tool slide is movable by rotation of a feed screw which is rotated in a tool slide advancing direction by a rack and pinion structure including a rack adjustably mounted on a feed plunger which coacts with a tool advance cam on the frame. The rack is also mounted for pivotal movement to permit manual rotation of the feed screw in a tool slide retracting direction, which pivoting results from cogging of the pinion gears relative to the rack gears.
    Type: Grant
    Filed: October 14, 1986
    Date of Patent: August 9, 1988
    Assignee: The E. H. Wachs Company
    Inventor: Peter K. Olson
  • Herbicidal pyrazolesulfonamides
    Patent number: 4762550
    Abstract: This invention relates to novel pyrazolesulfonamides, agricultural compositions thereof and the methods of their use as general and/or selective herbicides and/or plant growth regulants.
    Type: Grant
    Filed: August 13, 1987
    Date of Patent: August 9, 1988
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Stephen L. Hartzell
  • Optical connector receptacle and plug
    Patent number: 4762388
    Abstract: A receptacle adapted for connection in tight fit with an optical connector plug having a protective guide member surrounding a ferrule accommodating an optical fiber therein and spaced away from the outer circumference of the ferrule. The receptacle comprises at least a first supporting member having a hollow passage capable of receiving the ferrule, and a second supporting member spaced from the first supporting member for receiving and supporting the protective guide member of the ferrule. The plug comprises at least a ferrule containing an optical fiber therein and adapted to be received in the hollow passage of the first supporting member of the receptacle, and a protective guide member surrounding the ferrule at a position spaced away from the outer circumference of the ferrule and adapted to be received in the space between the first and second supporting members of the receptacle.
    Type: Grant
    Filed: March 15, 1985
    Date of Patent: August 9, 1988
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Toshiyasu Tanaka, Sadakazu Ariga
  • Digital phase-locked loop circuits with storage of clock error signal
    Patent number: 4763342
    Abstract: The digital phase-locked loop circuit extracts the clock signal from a serial flow of coded data by operating so as to determine the phase of the received signal and comparing this phase with that of a locally-generated signal. The error signal obtained from the comparison is digitally filtered and used to correct the phase of local signal. The error with respect to the signal extracted from a prior data stream is stored and used to effect corrections even in the absence of the data flow at the input or in presence of long zero sequences.
    Type: Grant
    Filed: November 24, 1986
    Date of Patent: August 9, 1988
    Assignee: Cselt--Centro Studi e Laboratori Telecomunicazioni S.P.A.
    Inventors: Renato Ambrosio, Carlo M. Bruno
  • Static interferometric ellipsometer
    Patent number: 4762414
    Abstract: A static interferometric ellipsometer, wherein a source (3) generates a coherent light-beam with two monochromatic radiations at slightly different frequencies. A first photodetector (6) generates a first beat between the two radiations, to be used as reference. A second photodetector (9) generates a second beat between the two radiations, after they have been polarized in perpendicular planes and separated so that one of them is reflected onto the photodetector (9) by the sample under test (1,2). A measuring and computing system (11) determines the optical properties of said sample starting from the intensity of the second beat and from the relative phase between the two beats.
    Type: Grant
    Filed: April 10, 1986
    Date of Patent: August 9, 1988
    Assignee: Cselt-Centro Studi e Laboratori Telecomunicazioni S.P.A.
    Inventor: Giorgio Grego
  • Stirling engine
    Patent number: 4760698
    Abstract: A modified Stirling cycle engine is described in which an increase of efficiency is obtained by using the heat transferred by conduction from the walls of the expansion cylinder and the expansion piston and providing a labyrinth dynamic seal at least on the expansion piston.
    Type: Grant
    Filed: July 21, 1987
    Date of Patent: August 2, 1988
    Assignee: Comitato Nazionale per la Ricerca e per lo Sviluppo del' Energia Nuclere e Delle Energie Alternative
    Inventors: Carlo M. Bartolini, Vincenzo Naso, Ferdinando Suraci
  • Multi-range shot shell
    Patent number: 4760793
    Abstract: Shot shell having a stratified payload of at least two different shot sizes, the larger diameter shot being closer to the mouth of the shell than the smaller diameter shot.
    Type: Grant
    Filed: October 28, 1987
    Date of Patent: August 2, 1988
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Edward I. Herring, III
  • Preparation of cyanomethyl esters
    Patent number: 4761494
    Abstract: Cyanomethyl esters are prepared by reacting a carboxylic acid halide with an alpha-hydroxynitrile, a molar excess of a hydrogen halide acceptor and a catalytic amount of a tertiary-aminopyridine or N-methylimidazole.
    Type: Grant
    Filed: November 23, 1987
    Date of Patent: August 2, 1988
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Walter L. Petty
  • Devices forming parts of regulatory systems for providing an output in the form of rectilinear motion with an input of both rotary and rectilinear motion
    Patent number: 4760864
    Abstract: A device for transmitting simultaneously to two parallel rods a motion with a single degree of freedom as a longitudinal translational motion from a sleeve surrounding the rods and which is itself subject to first and second degrees of freedom, a translational and a rotary motion, which includes a plate interconnecting the ends of the parallel rods, the plate lying perpendicularly to the axis of translational motion of the rods, and a connecting mechanism between the plate and the sleeve such that the connecting mechanism is adapted for transmitting only the translational motion to the plate.
    Type: Grant
    Filed: February 9, 1987
    Date of Patent: August 2, 1988
    Assignee: Societe Nationale d'Etude et de Construction de Moteurs D'Aviation "S. N. E. C. M. A."
    Inventor: Henry R. Leclerc
  • Device for turning a moving web
    Patent number: 4760946
    Abstract: In a device for the guiding of a moving web (1) that has on its inner side a contact-sensitive surface (3), the web (1) separates two zones (13, 14) in the guide region from one another. The outer zone (14) is formed by a housing (7) connected with a reduced pressure source (P). The inner zone (13) is connected with the atmosphere. To seal the housing (7) against the atmosphere, sealing elements (16, 17) extending across the width of the web at the beginning and end zones of the guide region interact with the outer side of the web (1). As a result of the pressure difference, a gap is formed between the guide surfaces (8, 9) of a support (6) and the web, so that the contact-sensitive surface is not supported in the guide region.
    Type: Grant
    Filed: March 21, 1986
    Date of Patent: August 2, 1988
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Altan Bassa
  • Herbicidal heterocyclic sulfonamides
    Patent number: 4761173
    Abstract: Substituted heterocyclic sulfonamides having herbicidal activity and agriculturally useful compositions comprising such compounds.
    Type: Grant
    Filed: March 24, 1987
    Date of Patent: August 2, 1988
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Thomas R. Dean