E.i. Dupont De Nemours and Company

Joshua Benin

Carl F Morin

Cathy Jane Hamilton

Leslie C Talo

William G Di Maio

Robert Roch Ward

James A Lawler

Robert P Luoma, Ii

Leland L Krauss

David A Wilson

Gary L Caldwell

Kenneth Lee Mulholland

Ernesto Brach

Jerzy Spolnicki

James F McKinney

Charles S Huffer

George W Goldman

John F Reichenberg

Helen R Delp

William M Ollinger

John A DeBenedictis

Gang Jin

A process and an apparatus for high speed manufacture of a composite sheet material, which includes a cylindrical cam-driven strand-traverse guide that can loop strands around pins projecting from a pair of advancing pin conveyors which can transfer the strands to the surface of a moving sheet, are provided. When the strands are elastic, the elastic composite sheet material made by this process and apparatus are useful in elastic components of disposable diapers, adult incontinence articles and other garments.

Apparatus for making composite sheet

An adjustable plating yarn carrier ( ) having two yarn guides ( ) allowing for the adjustment of the angle between two yarns (H, S) and the angles of both yarns to the needle (N), for the knitting of plated fabric, is provided.

Adjustable plating yarn carrier assembly for knitting plated fabric

A spinning cell for dry spinning spandex by extruding filaments from a nonuniform array of spinneret capillary groups in a rectangular bar and contacting them with a cross-flow of hot, inert gas is provided.

Spinning cell and method for dry spinning spandex

Process for making composite sheet

A nutatable plastic vessel, having a protuberant tip at its bottom end, has its side wall connected by a plastic hinge to a housing.

Vortexing liquid container

A lid structure for a polypropylene container is formed of a three ply laminate and a rehealable silicone rubber top layer adhered to the laminate. The laminate is polyester, polyvinylidene chloride and polypropylene heat sealed to the top rim of the container.

Lid structure

A vortexing mixer drive has a rotatable coupling rod where an end face defines an offcenter countersink with a bore at the center of the countersink. The rod is axially displaced to engage a vessel's protuberant tip to effect rotational movement.

Automatic vortex mixer

An apparatus, system, and process for making a sterile connection between two thermoplastic resin tubes is disclosed. The tubes are cut by a hot cutting means so as to form a molten interface between the tubes and the cutting means. The tubes are aligned with each other and slid off an edge of the cutting means while being urged together. As the thermoplastic resin cools a sterile splice is formed. The apparatus is controlled to provide precise timing of the above events and includes safeguards to ensure sterility is maintained.

Automatic splicing device and process

An electric heating element for sterilely cutting and welding together a pair of thermoplastic tubes transversely of the axis of each tube includes as an outer layer a folded sheet of a metal, such as copper, aluminum, silver or gold, having a thermal conductivity of at least about 173 watts/m.degree.K at a thickness of 0.10 mm and a tensile yield strength of at least 34.times.104 kPa at a 0.10 mm thickness. A resistance heating element, preferably having a positive thermal coefficient of resistance (PTC), in the form of a resistor of stainless steel or the like is disposed inside the fold of the metal sheet and a layer of dielectric adhesive, such as an epoxy or acrylic adhesive, stable to about 260.degree. C., is disposed between the inner surfaces of the metal sheet and the resistor to insulate the resistor from the folded sheet and bond the resulting structure together. The folded edge of the metal sheet forms the melting edge of the heating element. The heating element has a thickness of from about 0.13 mm. to about 0.76 mm.

Electric heating element for sterilely cutting and welding together

There is disclosed a cutting means magazine for a sterile docking device for forming a connection between two thermoplastic tubes comprising a casing, a stack of disposable cutting means therein, and spring means urging the stack against a wall of the casing. The casing has an exit slot for ejection of the uppermost cutting means and a slot for an ejector, the latter slot having upstream and downstream access openings. The upstream access opening (a) has an ejector aligning surface with a rise of at least about 0.25 mm and a slope of up to 45.degree. and (b) being from about 50%-100% of the cutting means thickness. The downstream access opening is from about 10%-80% greater than the cutting means thickness.

Cutting means magazine for a sterile docking apparatus

An auxiliary drive used in conjunction with a yarn winding apparatus at the doffing location to maintain bobbin chuck speed during doff has a selectively operable brake to stop both the drive and the chuck.

Apparatus to assist doffing of a yarn windup

An improved collet type bobbin chuck which uses mating tapered surfaces to produce radial gripping of the bobbins without dependence on centrifugal force. A manually operated spring mechanism is used to change the chuck from a bobbin releasing to a bobbin gripping mode.

Manually operated bobbin chuck

An improved collet type bobbin chuck which uses mating tapered surfaces to produce radial gripping of the bobbins without dependence on centrifugal force. Air pressure supplied to the chuck is used to release the bobbin and movable seals within the chuck are used for containing or releasing air as the chuck goes from a bobbin releasing to a bobbin gripping mode, respectively.

Growing community of inventors

Newark, DE, United States of America

Joshua Benin