Abstract: The present invention relates to methods and apparatus for forming features on an elongated metal wire and, in particular to making features, such as pin tips, compliant sections and retention sections on electrical terminal pins for use in interconnecting electrical leads, plated through holes in printed circuit boards and/or connector contacts.
Type:
Grant
Filed:
April 25, 1991
Date of Patent:
June 2, 1992
Assignee:
E. I. Du Pont de Nemours and Company
Inventors:
Paul W. Aikens, David F. Fusselman, James D. Strong
Abstract: This invention relates to a method and apparatus for providing a cable assembly seal and strain relief and, in particular, where the apparatus comprises a pre-mold for use with an overmold to provide the seal and strain relief for electrical conductors terminated within an electrical housing.
Abstract: The present invention relates to a method and apparatus for imprinting information, particularly identifying an intensifying screen and cassette used to produce a radiograph, permanently on the radiograph.
Type:
Grant
Filed:
September 13, 1990
Date of Patent:
February 4, 1992
Assignee:
E. I. Du Pont de Nemours and Company
Inventors:
Edwin W. Fisher, Christopher Schreiber, Douglas R. Walker
Abstract: The present invention relates to a method and apparatus for moving sheets from substrates without substantially moving the substrate and, specifically, where the sheets are sheets of X-ray film and the substrates are screens found in conventional X-ray cassettes or other sheets in a closely packed stack of sheets. The method and apparatus use at least one suction cup for curling and, thereby, lifting a portion of a sheet near an edge thereof allowing air to partially enter underneath the sheet. The suction cup has a sheet contacting face with a recess extending into the face where the recess is defined by an inner conical surface, a first planar surface and a second planar surface.
Abstract: The present invention relates to electrical terminal pins for use in interconnecting electrical leads, plated through holes in printed circuit boards and/or connector contacts and, in particular, to electrical terminal pin tips on insertion ends of the pins.
Abstract: The present invention relates to an off-press method for laminating an image sheet to an image receiving substrate and, more particularly, for laminating a plurality of image sheets to the receiving substrate and then laminating a portion of the receiving substrate to a display sheet.
Abstract: This invention relates to a method and apparatus for processing photosensitive material and, in particular, to a compact table top apparatus for developing silver halide photosensitive materials, such as a sheet or web of photographic film or paper or plate, and its use.
Type:
Grant
Filed:
October 13, 1989
Date of Patent:
December 3, 1991
Assignee:
E. I. Du Pont de Nemours and Company
Inventors:
Joel L. Vanover, Jon F. Boyer, Douglas J. Hohlbein, Anthony P. Montalbano, Christopher P. Montalbano, John G. Van Remoortel
Abstract: The present invention relates to an apparatus for processing a photosensitive element and, more particularly, for processing an aqueous developable photosensitive element which contains colorant. The apparatus comprises a a primary developing station for washing away most non-image portions from the element and a secondary developing station for washing away a remainder of the non-image portion. After the element is processed by the apparatus, the processed element forms a colored image on a support.
Type:
Grant
Filed:
November 15, 1990
Date of Patent:
October 22, 1991
Assignee:
E. I. du Pont de Nemours and Company
Inventors:
James S. Bailey, Timothy C. Croce, Lawrence D. Huppman, Michael P. Marion
Abstract: The present invention relates to electrical connectors for electrically connecting components and circuits on or in two parallel circuit boards and, more specifically, for electrically connecting components and circuits on or in two parallel circuit boards having a high density of interconnections.
Abstract: This invention relates to electrical connectors with a ground structure for impedance and cross talk control between signal carrying conductors and, in particular, where the connector is a right angle or angled receptacle.
Abstract: The present invention relates to circuit board contact elements and compliant sections thereof which are mounted in plated-through holes in printed circuit boards, generally in conjunction with a plastic header or other electrical connectors.
Abstract: The present invention relates to electrical connectors and, more particularly, to cam levers for injecting and ejecting a connector from another part.
Type:
Grant
Filed:
October 31, 1990
Date of Patent:
July 30, 1991
Assignee:
E. I. Du Pont de Nemours and Company
Inventors:
Alexander W. Hasircoglu, David T. Humphrey
Abstract: The present invention relates to a method and apparatus for automatically preparing one or more stacks of sheets, each stack having at least two substantially straight edges that meet to define a corner and, specifically, where preparing constitutes corner rounding, notching, hole punching or edge marking the stack.
Abstract: Methods of making assemblies and assemblies for interconnecting optical fibers and use in integrated optical systems. The optical fiber connector assemblies include a pedestal having a step supporting an optical waveguide device having a buried waveguide. End portions of the step support means for receiving cores and cladding of optical fibers with the optical axes of the cores in alignment with the optical axis or axes of the waveguide.
Abstract: The invention provides for deciding whether a recording dot is to be printed for the reproduction of scan dots. The scan dots being considered are complied in an input switching network into groups, for which an arithmetic processor determines the tonal value sum. The arithmetic processor emits a signal, if the tonal value sum exceeds a certain figure. The recording dot to be printed is determined by the presence of the signal in an output switching network. This process is performed successively for increasingly larger areas of the original, that is, for increasingly larger quantities of scan dots.
Abstract: The present invention relates to circuit board contact elements and compliant sections thereof which are mounted in plated-through holes in printed circuit boards, generally in conjunction with a plastic header or other electrical connectors.