Abstract: A system for collecting and processing donated blood comprises a first porous medium interposed between a blood collection bag and a satellite bag and a second porous medium interposed between the blood collection bag and another satellite bag. The porous media are leucocyte depletion media. The system may also include one or more of the following: a red cell barrier medium, a separation medium, a gas inlet, and a gas outlet. The system can be used to centrifuge whole blood into one or more components, and includes a means for protecting the system during centrifugation.

Abstract: A replaceable element fluid filter is provided that has a rigid apertured center tube which is attached to a fluid outlet. The center tube is formed of a plurality of sections that fit together to achieve the desired overall length. A rod of selectable length is received within the center tube to retain the center tube in rigid position in communication with a fluid outlet. Once the center tube assembly is secured to the fluid outlet, a tubular filter element is replaceably secured around the center tube. By incorporating a rigid center tube, the tubular filter element can be constructed so that it does not require a self contained supporting structure. By varying the number of sections of the center tube and the length of the rod, tubular filter elements of various lengths may be employed.

Abstract: A filter device made from netting mounted on the end of a storm sewer to receive the flow of water and debris carried by same and allow the water to flow on through while retaining the debris. The filter has multiple parts joined by quick release fasteners. The same fasteners connect the device to the storm sewer outlet.

Abstract: An interior wedge wire drum screen is mounted wholly within an exterior drum screen of narrower wedge wire spacing, and both are mounted to a frame and caused to rotate about a common central axis. One end of the outer drum is open and the other is closed by a disc-shaped drum head. The inner drum has an open end which is spaced inward of the open end of the outer drum. The waste water is presented to the surface of the inner drum screen by a waste water infeed which employs a vertical column. The column extends upwardly of an inlet and has a gradually increasing cross-section for reducing the flow of velocity of the waste water. A horizontal trough extends along the axis defined by the drums and communicates between the top of the column and a tray. The edges of the tray terminate in weirs which are parallel to the sides of the inner drum. Water flows in a smooth sheet over a weir to impact the sides of the inner screen with low velocity.

Abstract: A backflush conduit for an automatic back flushing filter having an inlet portion with a symmetrical converging bell-shaped cross-section, an outlet portion with a generally cylindrical shape, and a converging and reorienting transition portion connecting the inlet and outlet portions. Converging convex surfaces of the bell shaped opening smooth fluid inflow and prevent fulid separation. The transition portion interior contour redirects the fluid flow without inducing turbulence, resulting in more efficient backflushing to clean the entire filter element even at small element pore sizes.

Abstract: Described is a pressure filter comprising a fluid compartment with a fluid inlet, at least one filter surface in the fluid compartment having a plurality of apertures, one side of the filter surface being restricted by the fluid compartment and the other side thereof being restricted by a filtrate compartment having a filtrate outlet, and a backwashing means. The backwashing means includes a backwashing head sweeping over the filter surface and sealing a part thereof with respect to the fluid compartment. It restricts a backwashing compartment having at least one suction chamber open in a slot-like manner to the filter surface and having connected thereto a reject drain. The slot-like aperture of the suction chamber is formed in such a manner that each aperture of the filter surface, independent of its radial position, is swept over by the slot-like aperture approximately in the same space of time. Accordingly, a uniform cleaning process of the filter surface by the backwashing head results.

Abstract: A filter is inserted into a cylindrical hole of a nozzle body 1. The filter has an axial blind hole, which communicates with transverse or radial holes. The transverse holes open into peripheral longitudinal trap channels, which are axially open against a collection space. Via slot-like openings, the trap channels are connected to second or clean channels, which communicate with an outlet opening of the nozzle body. A flushing opening, which can be closed by a screw, leads from the collection space to the outside. When foreign bodies have accumulated in the trap channels, the flushing opening is opened, and the foreign bodies are flushed out with an injection stroke. As a result, the foreign bodies can be removed rapidly and in a simple manner.

Abstract: The invention relates to a method of manufacturing a screen product and to a screen product manufactured according to the method. In particular, the invention relates to the manufacture of a screen or a filter plate or a cylinder by a new machining method by which a product receives flow properties substantially better than the ones of the prior art devices. It is characteristic of the invention that an aperture having curved wall surfaces is machined in one work phase in the plate in the depth direction. It is characteristic of the screen product of the invention that the screening aperture is progressively widened in the direction of the flow through the plate, and preferably inclined under the ridge adjacent the groove in a plate.

Abstract: A centrifugal cleaner is constructed so that its efficiency is less sensitive to consistency changes of the feed slurry, and so that it can operate at a higher consistency than conventional cleaners, yet optimizes separation efficiency. This is accomplished by disposing a turbulence generator in the tangential inlet to the cleaner, the turbulence generator comprising an abrupt cross-sectional area reduction (e.g. a cross-sectional area of about 0.1-0.3 times as large as the cross-sectional area of the inlet) so as to break up fiber flocs and prevent reformation of the flocs. Existing centrifugal cleaners can easily be retrofit by the method of the invention to achieve the invention's advantages by inserting a turbulence generator into the inlet of an existing centrifugal cleaner. The tangential inlet leads to a hollow main body which includes a vortex finder located in the body top.

Abstract: In accordance with the process of the invention, bacteria are used to provide hydrogen sulfide and carbonate compounds for treating solutions containing metal ions. To produce the hydrogen sulfide, the bacteria utilize sulfate ions present in the solution. Hydrogen sulfide produced by the bacteria is used to remove metals from the solution as insoluble metal sulfides. The process of the invention thereby removes sulfate and metal ions from the treated solution. The bacteria used are mixed populations, including strains of naturally-occurring sulfate reducing bacteria, which have been serially adapted and selected to be highly active with the particular solutions to be treated and with the carbon and hydrogen sources being utilized. The bacteria may be fed gaseous hydrogen and carbon nutrients produced by a partial oxidation burner. Carbonate compounds produced by the bacteria may be used to raise the solution pH for treatment and discharge.

Abstract: There is disclosed a fermentation device having a peripherally extending wall, a gas-impermeable cover extending over the surface of the device, and attached at its peripheral edge to a top part of the wall, and a gas collection conduit extending for at least part of the periphery of the device within the wall. This device may be used for wastewater treatment enclosures.

Abstract: A system for thermophilic aerobic destruction of pathogenic organisms and organic matter within waste water treatment sludge includes a tank for maintaining the sludge and an air transfer apparatus for injecting air into the sludge near the bottom thereof so as to bubble up through the sludge and react exothermically with the thermophilic microorganisms therein so as to kill or destroy the mesophilic micro- organisms within the sludge. The thermophilic reaction is preferably controlled within a desired temperature range by control of the flow of fresh air versus recycled air being injected into the sludge. The fresh air to recycle air ratio can be controlled by several different mechanisms so as to produce the desired temperature range. The air is also utilized to mix the sludge within the tank. A pumping apparatus is also provided for transferring sludge into and out of the tank and for recirculating the sludge for purposes of auxiliary mixing.

Abstract: New separation methods termed Enhanced Partitioning Fractionation (EPF) and High Osmotic Pressure Chromatography (HOPC) are described. The HOPC method involves passing large amounts of concentrated polymer solutions over porous material in a packed column. The concentration is high enough to allow for polymer chain overlap and to generate high osmotic pressures with respect to the porous material. The resulting high osmotic pressure causes increased separation of the polymer sample based on molecular size. The higher molecular weight components are concentrated in the initial fractions of eluent collected, whereas lower molecular weight components are concentrated in later fractions. The molecular weight of each fraction decreases with each successive fraction of eluent. The method is applicable to a wide variety of polymers and provides significant performance advantages to conventional preparative scale GPC.

Abstract: A nanofiltration process using a conventional nanofiltration membrane module under a positive applied pressure is used to selectively change the concentration of one solute, such as sodium chloride or sodium chlorate providing monovalent ions, from another solute such as sodium sulfate or sodium dichromate providing multivalent ions in high salt aqueous concentrations. The process is particularly useful in favourably lowering the concentration of silica and dichromate ions in chloral kali and chlorate brine containing solutions and favourably raising the sodium sulphate level relative to sodium chloride in chloraldhali liquor. The relatively high salt concentration, surprisingly, effects little or no monovalent, particularly, Cl.sup.- rejection.

Abstract: An quaternary phosphonium ion-exchanged clay and method of removing organic contaminants from air and/or water, by contacting the contaminants in the air or water with a quaternary phosphonium organo-clay. The clay is prepared by ion-exchange of an ion-exchangeable clay with (a) tetra-short chain alkyl (C.sub.1 -C.sub.4) quaternary phosphonium ion or (b) a di- or tri-short chain alkyl (C.sub.1 -C.sub.4) quaternary phosphonium ion having 1 or 2 mono-substituted or unsubstituted cycloakyl moieties, or one or two alkaryl moieties for removing air-laden and water-laden organic contaminants. The new organo-clays and methods are particularly adapted for removal of aromatic petroleum-based contaminants from water, such as benzene; alkyl-benzenes, such as toluene; xylenes (o-, m- and p-isomers); and chlorinated 1 and 2 carbon compounds, such as CCl.sub.4.

Abstract: Fine particles are dewatered in an energy efficient process in which a non-polar liquid or a mixture of different hydrophobic liquids are used to displace the water from the particle surface. Thermodynamically, this process is spontaneous. The only energy required for this process is to recover the hydrophobic liquid(s) for recycling purposes. The hydrophobic liquids are recovered in gaseous form either by lowering the pressure or by heating, and converted back to liquid form for re-use. The most economical reagents that can be used for this purpose include propane, butane, pentane, and ethane. Carbon dioxide may also be used for the dewatering process described in the present invention. The process of dewatering by displacement is capable of achieving the same or better level of moisture reduction as thermal drying but at substantially lower energy costs.

Abstract: Coagulant compositions, advantageously solvent (water) solution thereof, well suited for the treatment/purification of impure aqueous media, e.g., surface waters, wastewaters, effluents, etc., via sedimentation technique, comprise (i) at least one basic aluminum polychloride or polychlorosulfate, (ii) at least one iron(II) and/or iron(III) compound, and (iii) at least one alkali metal and/or alkaline earth metal halide.

Abstract: The invention is concerned with clarifying contaminated liquids and, in one described embodiment, contaminated liquid is continuously supplied to a first vessel, a first treatment material is intimately mixed into the contaminated liquid in the first vessel, the contaminated liquid/first treatment mixture is passed to a second vessel and a second treatment material is added to the contaminated liquid and first material mixture and intimately mixed therewith.The first treatment material preferably comprises one or more compound of the group including soluble magnesium salts, ferrous salts, manganous compounds and cuprous compounds and the second material is an alkali intended to reduce the pH of the final mixture.After the second treatment material has been added the impurities separated out from the final mixture are extracted from one outlet from the second vessel and clarified liquid is discharges from another outlet of the second vessel.

Abstract: A process for the precipitation and separation of inorganic species form aqueous solutions. The method comprises the step of adding a miscible organic solvent to inorganic-aqueous solution so that a solid precipitate from the aqueous solution is formed. The resultant solid precipitate is separated from the organic-water mixture. After separating the solid precipitate, the miscible organic solvent is removed and recovered from the organic-water mixture by applying vacuum or other means of recovery. The separated miscible organic solvent can then be condensed and returned to the process. The water is stripped of traces of miscible organic solvent and removed from the system as product water.

Abstract: A system for purifying water and washing and filling a container with the purified water is disclosed. The system includes an appartus comprising a water inlet system, a water purification system, a container washing system, a container filling system, an auxiliary function system, a mineralization system and an ozonating system. The apparatus includes compartments, where a container is washed and filled within a single compartment. The apparatus also includes a cap washing system.

Abstract: A novel multiple level mask (e.g. tri-level mask 36) process for masking achieves a desired thick mask with substantially vertical walls and thus improves the ion milling process of ceramic materials (e.g. BST). An embodiment of the present invention is a microelectronic structure comprising a ceramic substrate, an ion mill mask layer (e.g. photoresist 42) overlaying the substrate, a dry-etch-selective mask layer (e.g. TiW 40) overlaying the ion mill mask layer, the dry-etch-selective mask layer comprising a different material than the ion mill mask layer, a top photosensitive layer (38) overlaying the dry-etch-selective mask layer, the top photosensitive layer comprising a different material than the dry-etch-selective mask layer, and a predetermined pattern formed in the top photosensitive layer, the dry-etch-selective mask layer and the ion mill mask layer. The predetermined pattern has substantially vertical walls in the ion mill mask layer.

Abstract: A control apparatus for resistance welding includes a time measuring device for measuring an energization time of a welding current, the energization time being required by a given electrode displacement during welding between an electrical conductive weld member and a member to be welded which are arranged between two electrodes. A time difference calculating device is operative for calculating a time difference between the energization time measured by the time measuring device and a preset target energization time. A feedback control device is operative for correctively increasing and decreasing a welding current, which occurs at a next weld timing, on the basis of the time difference calculated by the time difference calculating device.

Abstract: A method of assembly of impeller (12) and turbine (14) shells (116) for torque converters (10). Vanes (116) are capacitance discharge welded with a high energy pulse into the shells (112).

Abstract: A gas ionizable to produce a plasma is introduced into a arc head and a plasma discharge is initiated at voltages less than 50 V between a high resistance helix, impregnated with low work function materials, within the arc head, and a downstream arc channel electrode. Plasma from this discharge migrates into a gap between the arc channel electrode and a weld work piece creating a conducting path adequate to draw a high current arc column from the arc head to the weld work piece at arc initiation voltages less than 50 V. Increased energy density and penetration of the melt zone at the weld work piece is enabled by a predominately axial magnetic field around the arc column, with other magnetic fields enabling manipulation of the arc column over the weld work piece. Further manipulation of the arc head plasma discharge allows a vigorous metal vapor deposition process to be performed which can be sustained simultaneously with a welding operation.

Abstract: A laser marking apparatus, capable of marking at a high scanning speed, effectively utilizing a laser power, and providing high marking accuracy, irradiates an incident laser beam from a laser beam source onto a marking surface by raster-scanning through a raster scanning system. The raster scanning system includes an X-direction polarizing mirror, a Y-direction polarizing mirror, a field lens, and a mask. A double polarizing prism, which includes a pair of polarizing prisms (13a, 13b) for branching the incident laser beam (1) into twin laser beams, is arranged in series at an intermediate position between the laser beam source (2) and the upstream one of the X-direction polarizing mirror (3) and the Y-direction polarizing mirror (8).

Abstract: This invention relates generally to a process and apparatus for contamination-free processing of semiconductor parts. More specifically, this invention relates to a process and apparatus for contamination-free processing of semiconductor parts in an oven or a furnace. This invention also relates to a process and apparatus for contamination-free processing of semiconductor parts in a furnace, such as a belt type furnace that sequentially stops the belt at the vicinity of at least one heating or cooling unit to heat or cool the part.

Abstract: A de-labeler made with easily available structural elements which cooperate to remove a normally non-removable label from a labeled surface of a casing for magnetic media, film, and the like, without using a solvent of any kind. The labeled surface is heated just enough to cause desired viscous deformation of a thin layer of adhesive, or a sufficient decrease of viscosity to loosen the label and enable it to be manually removed, preferably by adhesive failure of the thin adhesive layer. A typical pressure sensitive adhesive ("PSA") is heated to a temperature in the range from 32.degree. C.-65.degree. C., for an interval of time in the range from 5 to 30 seconds, in inverse relationship to the temperature at which the labeled surface is heated. The label is manually peeled away from the surface with a force in the range from 0.5 lb-force to about 10 lb-force, without distorting or otherwise damaging either the casing or the magnetic recording medium encased therein.

Abstract: A fixing heater comprises a substrate having an insulative property and a heat generating member with electrical resistance printed on a surface of the substrate. The heat generating member is a film-like shape having a direction and a pair of edge portions opposing one another, wherein one of the edge portions is trimmed in the direction. The heat generating member has a heat generating portion having opposing one and another edge portions, wherein one of the edge portions is trimmed in the direction throughout the heat generating portion. The heat generating portion is trimmed so as to provide the trimmed edge having partially different width along the direction.

Abstract: A narrow susceptor is incorporated into the die in the vicinity of a bondline between two or more parts in an induction heating workcell. When the induction coil of the workcell is energized, the susceptor heats and preferentially heats the parts near the bondline. The preferential heating is localized at the bondline and reduces energy losses otherwise expended to heat large thermal masses in the workcell or to heat the entire parts.

Abstract: A safety container for a baking utensil provided with a thermal heating element having ferrites dispersed therein, which utensil when placed in a microwave oven and is exposed to microwave energy, converts this energy into thermal energy for cooking the food therein. The safety container in which the utensil is housed includes a removable cover and a temperature-responsive latching mechanism which releases the cover to permit withdrawal of the utensil from the container only when the utensil has cooled to a temperature level at which it is safe to handle.

Abstract: The present invention relates to a process for producing heat energy without combustion for causing no air pollution. More particularly, the present invention relates to a process which imposes kinetic energy selected from the group comprising static electricity, high voltage electricity and electromagnetic radiation upon selected matter to convert the electrons from such matter into an exciting or ionizing state, and collecting the heat energy released when the excited or ionized electrons from such matter go back to a lower energy state without combustion. The heat energy produced in accordance with the present invention does not go through combustion, therefore no pollution is created.

Abstract: The object of the present invention is to provide a gas injection nozzle which is used for pouring liquid metal and which is prevented from being blocked in the course of continuous casting. According to the present invention, a gas injection nozzle for pouring liquid metal is provided, wherein(a) the nozzle consists of a porous refractory,(b) the circumference of the nozzle is surrounded by an iron shell which has a gas injection pipe, a band-like space (referred to as a gas pool hereinafter) which extends along the circumference of the nozzle perpendicular to an axis of the nozzle between the porous refractory and the iron shell, and(c) the gas pool is formed as a wavy, band-like space along at least one portion of the circumference of the nozzle.

Abstract: A magnetic paint composition comprising a carrier, particulate magnetically permeable material, a binder, and a thickening agent having thixotropic and viscosity characteristics such that the paint composition has high viscosity when stationary, and low viscosity when shear forces to the paint composition, as it is being applied to a wall surface. When the paint is dried, magnetic objects can be mounted to the wall surface and held in place by the interaction by the magnetically permeable material.

Abstract: A composition for optimally removing or etching metallic alloys from chemically compatible substrates with minimal damage to the substrate. The preferred composition is Ammonium Fluoride, Hydrofluoric Acid, Nitric Acid, Phosphoric Acid and Water in a specified range of quantities used to selectively remove an Aluminum and Silicon Alloy and Titanium film from a chemically compatible substrate. The composition is placed in contact with Stainless Steel, Silicon, or other organic or metallic substrates to remove, etch, or pattern homogenous or layered Aluminum, Silicon, Titanium and Copper Alloys from the substrate with minimal etching to the underlying substrate.

Abstract: Free-flowing and storable granular compacts containing ingredients of detergent or cleaning compositions in concentrated form are prepared by(1) preparing an adhesively bound dry premix containing(a) fine-particle detergent ingredients substantially free of binding or adhesive properties, and(b) fine-particle detergent ingredients having binding or adhesive properties, and optionally, detergent ingredients which are liquid at room temperature, to form a substantially homogeneous premix, and(2) press-molding the premix at a temperature of from about 40.degree. C. to 80.degree. C. in the substantial absence of shear forces whereby air is microdispersed in the resultant compacts.

Abstract: Low molecular weight resins that usually are aliphatic and that include crosslinking thermal functional groups are useful as liquid molding compounds for reaction injection molding or resin transfer molding. The compounds eliminate the need to handle solvents when preparing thermoset composites.

Abstract: Anti-ferroelectric liquid crystal substances which are represented by the formula (1): ##STR1## wherein R is a straight chain alkyl group having 6 to 10 carbon atoms,X is hydrogen or fluorine atom,Z is --CH.sub.3, --CF.sub.3 or --C.sub.2 H.sub.5, andC** stands for an asymmetric carbon atom, andl, m, and n are 0 or a certain integer depending on the specific kinds of X and Z,and the use of the substances for liquid crystal display devices.

Abstract: SiO.sub.2 aerogels containing carbon particles are obtainable by heatinga) organically modified SiO.sub.2 aerogels in the presence of at least one pyrolyzable hydrocarbon gas and/or at least one inert gas orb) organically unmodified SiO.sub.2 aerogels in the presence of at least one pyrolyzable hydrocarbon gas and in the presence or absence of inert gases to 600.degree.-1300.degree. C.

Abstract: A quick drying nail tip blender and brush cleaner for use in beauty salons for the purpose of smoothly blending an edge of a synthetic nail to the surface of a natural nail comprises styrene monomer, acetone, gamma butyrolactone, flagrance and safflower oil. The compound avoids the sue of conventional chlorinated solvents.

Abstract: A method of treating an aqueous system is described which comprises incorporating in the system a hydroxylamine derivative of the general formula: ##STR1## wherein each of R.sub.1, R.sub.2 and R.sub.3 which may be the same or different represents hydrogen, alkyl of 1 to 8 carbon atoms or aryl or a water soluble salt thereof or a precursor thereof, and a tannin in a weight ratio of at least 2:1. This is particularly useful for boiler water systems.

Abstract: A composition which is capable of imparting electrical conductivity and non-tackifying property, comprising (A) a carbon fluoride in which a ratio F/C of fluorine atom to carbon atom is more than 0.5 and less than 1.0 and (B) at least one selected from the group consisting of a thermoplastic resin, a thermosetting resin and a rubber, a paint composition containing the same, and a semi-electrically conductive roller for electrostatic copying machine having an electrically resistive layer formed from the composition.

Abstract: A metal paste comprising ultrafine particles of a metal. The particles have a particle size of 1000 angstroms (0.1 micron) or less and are individually uniformly dispersed in an organic solvent.A process for producing a metal paste comprises the steps of evaporating a metal in a vacuum chamber in an atmosphere of an inert gas at a pressure of 10 Torr or less and of collecting the vapor of the evaporated metal on a cooling surface in the form of ultrafine particles having a particle size of 1000 angstroms (0.1 micron) or less, wherein a vapor of an organic solvent is introduced into the vacuum chamber while the metal is being evaporated.A method for preparing a metallic thin film having a thickness of between 0.01 micron and 1 micron. A metal paste containing ultrafine metal particles having a diameter of 0.1 micron or less uniformly dispersed in an organic solvent is coated on a substrate, dried and sintered.

Abstract: A new class of proton transfer, benzazole, fluorescent compounds is composed of a 2-benzazolyl moiety covalently bonded to an aromatic fused ring heterocyclic moiety. The 2-benzazolyl moiety may be a 2-benzoxazolyl, 2-benzothiazolyl, or 2-benzimidazolyl. The aromatic fused ring heterocyclic moiety may be a 3-dibenzofuranyl or 3-dibenzothiophenyl each substituted at the 2 position with a proton donating group, or a 2-carbazolyl substituted at the 3 position with a proton donating group. The proton donating group may be hydroxy, sulfonamido, carbonamido, and the like, and preferably is hydroxy. The fluors are soluble in organic matrix materials such as solvents, monomers, resins, polymers, and the like. The UV-excited fluors emit short-lived fluorescence at .gtoreq.520 nm and may be used in the manufacture of fluorescent coatings, objects, scintillators, light sources and the like.

Abstract: An apparatus for aerating polluted water is disclosed herein. The apparatus includes a tubular section defining a primary chamber having an opening in the side for admission of air from the surrounding atmosphere. A principle distribution chamber for receiving water to be aerated is connected to an upper peripheral edge of the tubular section and delivers water to a plurality of high speed nozzles that deliver accelerated sprays into the primary chamber. A tapering section is connected to a lower peripheral edge of the tubular section. A venturi section is connected to the lower peripheral edge of the tapering section. A single drain pipe including an upper peripheral edge is connected to a lower peripheral edge of the venturi and constitutes the sole outlet of the device. The nozzles create an air water mixture in the primary chamber and are directed toward the venturi to create a suction effect thereby drawing additional air into the primary chamber through the inlet orifice.

Abstract: An aeration/mixing system for applying air or another gas to wastewater or another liquid. A main air supply pipe receives air from a blower and directs the air to a plurality of aeration modules each including a submerged conduit and a plurality of diffusers on the conduit. Flexible hoses connect the main pipe with the conduit of each module. In one form of the invention, a flexible line connected with each module has a sliding connection with a ballast block and may be pulled tautly and secured at the surface to hold the module down in the basin. Retrieval of the module for maintenance requires only that the line be released so that the buoyancy of the module floats it upwardly. A modified embodiment includes an inflatable bladder on each module which can be inflated to cause the module to float upwardly for retrieval.

Abstract: A conduit assembly (10) is manufactured by extruding a casing (11) through a die while at the same time feeding a web member (15) into the casing (11) as it is being extruded to form a plurality of chambers (16, 17). If the conduit assembly (10) is manufactured with a line, such as a rope (18) or a cable (19), the rope (18) and/or cable (19) is likewise fed into the casing (11) adjacent to the web member (15) into one or both of the chambers (16, 17).

Abstract: A method for the preparation of optical ferrules containing cylindrical members utilizes a guide receiving the cylindrical member, a sleeve receiving a piston therethrough, and a pin extending into the sleeve. The method also includes biasing to position the piston, using fill gates to dispense polymer into a defined cavity, and employing a containment which secures the components together. Injection molded optical fiber ferrules made according to the apparatus and process exhibit superior properties.

Abstract: The invention relates to a process for insulating pipes by applying a rigid polyurethane foam as an insulating layer and optionally an external top coating by the rotational casting process. The rigid polyurethane foam is obtained by a) an aromatic polyisocyanate, b) an organic polyhydroxyl compound, c) an aliphatic, cycloaliphatic or aromatic polyamine and/or polyimine having a molecular weight of from 32 to 1,000 as the cross linking agent in the presence d) a blowing agent, and optionally in the presence of e) known auxiliary substances and additives and in the presence of f) one or more compounds having a molecular weight of from about 166 to about 1,000 and being of the general formula ##STR1## wherein n represents an integer between 2 and 9, preferably 2 and 3,R.sup.1 signifies hydrogen, a C.sub.1 -C.sub.9 alkyl radical or a ##STR2## R.sup.2 signifies hydrogen, and R.sup.3 and R.sup.4 signify hydrogen or methyl.

Abstract: The specification describes a conjugate carpet face yarn including trilobal or delta cross-section polyolefin filaments and a plurality of generally co-linear smaller polyamide fibrils embedded within the polyolefin filaments. This yarn has the stain resistant properties of polyolefin based yarns and the resiliency of polyamide based yarns.

Abstract: A multi-chip-module comprising a plurality of vertically layered substrates and including a plurality of coaxial inter-connects formed between and through the substrate layers. Each of the coaxial inter-connects is formed by a process wherein: an outer hole (aperture) is drilled through the substrate and lined with an electrically conductive material to form an outer via; the outer via is filled with a dielectric material; and, an inner hole (aperture) is drilled through the dielectric material and filled with an electrically conductive material to form a center via. The characteristic impedance of the coaxial inter-connect is determined by the selection of the outer diameters of the drilled holes for the outer and center vias.