Abstract: A process for clarifying and reclaiming industrial working fluids and/or outdoor working locations such as oil and gas well working fluids and pits. A treating agent is added to the fluid in an amount exceeding its solubility therein to precipitate soluble contaminants and to form a layer of treating agent over a lower layer of sludge at the pit bottom comprising insoluble contaminants and the precipitates. The layer of treating agent compresses the sludge and serves as a filter/barrier to increase the amount of overlying clarified fluid which can be collected. Following separation of the clarified fluid for disposal or reuse, the sludge is solidified by adding a further treating agent. The process is particularly suited for use in oil and gas well exploration wherein the treating agent is a particulate material including lime.
Type:
Grant
Filed:
April 26, 1989
Date of Patent:
January 23, 1990
Assignees:
George D. Smith, John J. Smith, Gregory New, Cam C. Colelli, David I. Mansberry
Abstract: An automotive and refinish coating containing a curing catalyst which minimizes yellowing of a finish after exposure to weathering wherein the composition has a binder of an acrylic polymer of polymerized monomers of alkyl methacrylate, alkyl acrylate or mixtures thereof and the polymer has pendent aminoester or hydroxy aminoester groups and a glycidyl acrylic crosslinking polymer of polymerized monomers of glycidyl methacrylate or glycidyl acrylate and an alkyl methacrylate or acrylate or mixtures thereof; wherein the catalyst is the alkyl ester of para hydroxy benzoic acid having 1-4 carbon atoms in the alkyl group.
Abstract: An automatic vortexing drive is described in which a rotatable coupling has a cuplike recess positioned off of and opening radially outward from the axis of rotation of the coupling. The coupling is positioned to intercept the lower and reaction vessels in the recess. Selective rotation of the coupling permits the vessels to pass the coupling or be engaged by the coupling and nutated.
Type:
Grant
Filed:
August 24, 1988
Date of Patent:
January 23, 1990
Assignee:
E. I. Du Pont de Nemours and Company
Inventors:
William J. Devlin, Carl F. Morin, Robert K. Wiedenmann
Abstract: A device for closing an ignition-enablement switch only if a drive control is in neutral position includes a stop member, a switch mount and a closing member each biased toward its position of engagement with the stop member and movable to positions displaced therefrom, the switch mount having the switch on it such that it is closed by the closing member only when the closing member and switch mount are both in their stop-engaging positions, and an actuator mechanism movable with the drive control between positions displacing the closing member and positions displacing the switch mount, through a position displacing neither. The device may be integrated with the drive control, with major parts pivotable about the control axis. Or the device may be attached to the drive control by a link arm, with major parts pivotable about a separate axis.
Abstract: An improved spandex composition is provided in which a polymeric hindered tertiary amine stabilizer is present. The polymeric amine is poly(diisopropylaminoethyl methacrylate/hydroxybutyl acrylate) or poly(diisopropylaminoethyl methacrylate/ethyl acrylate).
Abstract: A rupturable cover for a vehicle air bag compartment which includes two door sections connected by a rupturable membrane. Each door section includes a generally S-shaped hinge which allows the sections to pivot outwardly from each other when the rupturable membrane is ruptured to allow the exodus of the air bag. The cover may be mounted on an air bag module or on the dashboard of the vehicle by screws or heat staking.
Abstract: Compositions having the nominal formulaTl.sub.e Pb.sub.a Ca.sub.b Sr.sub.c Cu.sub.d O.sub.xwhereina is from about 1/10 to 3/2,b is from about 1 to 4,c is from about 1 to 3d is from about 1 to 5e is from about 3/10 to 1x=(a+b+c+d+e+y)wherey is from about 1/2 to 3,are superconducting. Processes for manufacturing such compositions and for using them are disclosed.
Abstract: A supported thin metal hologram is formed and mounted on a substrate using an adhesive. In a preferred aspect, the hologram is covered with a transparent resin which preferably is identical to the adhesive.
Abstract: A package for uniform microwave cooking of a food item such as an egg roll, which requires surface browning or crispening, comprises a drapable, liquid permeable, microwave susceptive composite material draped around the food item, and a paper board holder having at least one cutout portion into which the wrapped food item nestles.
Abstract: Coated oriented polymeric monofilaments having a diameter of at least about 60 mils and excellent uniformity in roundness are prepared in which a core of semi-crystalline linear condensation polymer is melt extruded, quenched to a substantially void-free condition, coated with additional polymer to increase the diameter by about from 10 to 100 mils, quenched to a substantially void-free condition, oriented by drawing about 3.5 times its original length within the orientation temperature range of the polymer, and the resulting oriented structure is coated with about from 10 to 100 mils of polymeric material.
Abstract: A dozer blade mounting assembly for angling and tilting the blade, while preventing or adjustably limiting pitching, without inducing stresses in the assembly. The blade is supported on a conventional C-frame by a universal connection in the longitudinal axis of the vehicle. The mounting assembly includes a mast assembly connected to the frame midportion and extending upwardly from the frame, a pair of hydraulic angling cylinders connected between the side portions of the blade and the mast assembly adjacent the longitudinal axis of the vehicle, a tilt cylinder connected between the frame and the mast assembly and a bracket assembly supporting the upper portion of the blade and preventing or adjustably limiting pitching of the blade.
Abstract: A method for preparing a coordination complex of an isonitrile ligand and a radioisotope of Tc, Ru, Co, Pt, Re, Os, Ir, W, Re, Cr, Mo, Mn, Ni, Rh, Nb and Ta from a non-radioactive metal adduct of the isonitrile.
Type:
Grant
Filed:
June 25, 1986
Date of Patent:
January 16, 1990
Assignee:
E. I. Du Pont De Nemours and Company
Inventors:
Alan P. Carpenter, Jr., Leo J. Maheu, Michael A. Patz, Thomas H. Tulip, Karen E. Linder, Vinayakam Subramanyam, Jeffery S. Thompson
Abstract: According to the invention, the device comprises clamping elements hinged in a housing provided with a cut-out and a control system formed by a group of levers which are connected with a hoisting line. Besides, one of the levers is hinged to the housing and the other levers, to the clamping elements.
Type:
Grant
Filed:
June 30, 1988
Date of Patent:
January 16, 1990
Assignee:
Azerbaidjansky Nauchno-Issledovatelsky I Proektno-Konstruktorsky Institut Neftyanogo Mashino-Stroeniya
Inventors:
Nariman G. K. O. Kurbanov, Vagif A. Ali-Zade, Vladimir A. Kartashev, Eldar T. O. Zeinalov
Abstract: This invention relates to a process for making a printing relief from a flexographic photosensitive element comprising:(a) imagewise exposing to actinic radiation a layer of a photosensitive composition, said photosensitive composition comprising a binder having thermoplastic and elastomeric domains, a first addition polymerizable, ethylenically unsaturated monomer having some compatibility with both domains of the binder, and an addition polymerization initiator or initiating system;(b) removing the unexposed portions; and(c) applying post development treatment; wherein the improvement comprises increasing the flexibility of the flexographic printing relief by adding at least one additional ethylenically unsaturated monomer so that the ratio of first monomer to the additional monomer is in the range 1:4 to 4:1 based on total weight of monomer, said additional monomer is added to the photosensitive composition prior to imagewise exposing the layer provided that said additional monomer is substantially incompa
Type:
Grant
Filed:
August 30, 1988
Date of Patent:
January 16, 1990
Assignee:
E. I. Du Pont de Nemours and Company
Inventors:
Bernard Feinberg, Michael Fryd, Ernst Leberzammer
Abstract: A positively working, tonable, photohardenable mixture, as well as image-forming material prepared therefrom are described, which as essential components, contains a binder or mixture of binders, a photohardenable compound, a photoinitiator or an initiator system and a multivalent metal compound to improve the toning properties of the material.
Type:
Grant
Filed:
January 23, 1989
Date of Patent:
January 9, 1990
Assignee:
E. I. Du Pont de Nemours and Company
Inventors:
Richard D. Bauer, Ursula A. Kraska, Manfred A. Sondergeld
Abstract: New composite materials useful for wrapping food items to be cooked by microwave energy comprise drapable, liquid permeable, woven or non-woven, fibrous dielectric substrates, which substrates, or fibers of which substrates, are coated and/or imbibed with one or more susceptor materials. The composite materials, when wrapped around a food item to be cooked by microwave energy, enhance the browning and/or crispening of the items.
Abstract: Herbicidal sulfonamides such as 2-[[[4-(methylamino)-6-(2, 2,2-trifluoroethoxy)-1,3,5-triazin-2-yl]-aminocarbonyl]aminosulfonyl]benzo ic acid, methyl ester are useful as herbicides and plant growth regulants.
Abstract: A yarn finish applicator in which finish is metered to a slot running from top to bottom of the applicator. The configuration of the body of the applicator its slot and the passage supplying liquid to the slot provides a slot configuration that is relatively insensitive to the yarn threadline alignment within the slot.
Abstract: A three point implement hitch arrangement for a tractor including a frame assembly, a pair of draft arms pivotally supported on the frame assembly intermediate their ends and lift cylinders having a cylinder portion pivotally supported on the frame assembly above the draft arms and having a rod portion pivotally connected to the draft arms, forwardly of the draft arm pivotal connections. The lift cylinders are connected in series, wherein the area of the rod end of one cylinder is equal to the area of the head end of the second cylinder, whereby the cylinders may be operated independently to tilt the implement or operated in unison to lift the implement, eliminating the requirement for a complex structural support and control.
Abstract: A shift control system for automatically shifting a multi-speed hydromechanical transmission one gear ratio at a time. The shift control system includes a cam element and an electronically controlled shifter assembly. The cam element is shiftable between distinct angular positions corresponding to different and distinct gear ratios for the transmission. The shifter assembly includes an actuator for imparting movement to the control element and a pair of stop assemblies. The stop assemblies limit angular movement of the cam element in incremental steps and, thereby, sequence transmission operation to one gear ratio at a time.