Abstract: There are disclosed novel polysulfide roofing compositions, combined with rubber particle mats, and bituminous-based roofing compositions containing crumb rubber and an elastomeric polysulfide to give improved impact resistance and the method of making such roofing.

Abstract: A mobile self-propelled aircraft loading bridge adaptor for bridging between small aircraft and the conventional bridge entry ways provided at airports for use with standard size jets and similar aircraft. In one embodiment, the bridge is supported by spaced apart adjustable lifts that provide independent elevation and lowering of portions connected to the lifts. In another embodiment, a pivot is positioned at a predetermined location near one end of the bridge, and it is operative in combination with a hydraulic lift located near the other end of the bridge to provide desired adjustment. In still another embodiment, the bridge is deployed between a small aircraft and a bus.

Abstract: This invention concerns a method of beneficiating graphite to a higher purity level by dislodging the impurities from graphite by attrition preferably in an attrition cell which has at least one set of opposing pitched impellers. A pulp is formed preferably essentially consisting of a flake graphite:attrition adjuvant:water in a ratio of 1:2:0.8 to 10 and this pulp subjected to attrition in an attrition cell.

Abstract: An essentially non-slumping, high density, low moisture and low cement castable composition, consisting of a tempered, pumpable first component containing the castable solids and consisting essentially of a refractory aggregate, a calcium-aluminate cement, a flow aid, a deflocculating agent, and water, the water being present in the lowest amount sufficient to achieve a pumpable consistency of the tempered first component, and a flocculating agent as a second component to be added to said first component at time of installation in an amount sufficient to give the castable a dried bulk density of at least about 120 pcf. The invention also includes the method of applying such castable through a spray nozzle in which the flocculating agent is added to the tempered first component just prior to its application through a spray nozzle.

Abstract: A pharmaceutical composition comprising a shaped enteric material having distributed therethrough preferably substantially uniformly, pharmaceutical loaded particles, said particles having a size no greater than about 10 microns in any dimension and being alkali insoluble and the method of delivering pharmaceuticals to Peyer's glands.

Abstract: A medical electrode insulating configuration in which an insulating sleeve such as an "O" Ring is disposed within a recess adjacent the distal end of an electrosurgical pencil holder for an electrosurgical blade, tightly surrounding the electrosurgical blade when in place, thus preventing moisture migration along the blade within the holder that might otherwise develop an undesired electrical path for operating voltages.

Abstract: A suction-irrigation device having a hinged reusable housing enclosing a disposable tri-tubular cassette that is replaced each time the device is used. The three tubes of the tri-tubular cassette provide respectively for irrigation fluid, suction and instrument pass through. A pair of symmetrically positioned trumpet-type actuators are equipped with friction-reducing rollers and are disposed in a wedging configuration to selectively impart squeezing action on the irrigation fluid and suction tubes, thereby providing control that is provided for ambidextrous use, that is, it is equally adapted for left and for right handed use.

Abstract: A method of making fiber-reinforced preceramic and ceramic composites by infiltrating a preform of heat-resistant fibers with a solvent-free thermosetting preceramic polysilazane poller. The invention also comprises the resultant preceramic and ceramic composites.

Abstract: A bib panel for covering the chest and part of the neck of a dental patent is made of bonded composite liquid impervious and treated liquid absorbent material, is generally rectangular in form and has a circular cut-out for the patient's neck. A strip of adhesive extends across the top edge of the back of the panel. The adhesive is a pressure sensitive adhesive and has the property that it can be attached to the front of another bib panel and then removed without contaminating the adhesive. A plurality of bib panels are stacked and attached together to form a pad of panels for dispensing the panels by peeling the top panel from the one below it. The plurality of panels are attached to a support back or, placed in a disposing tray, the bottom panel adhering to the support back or the bottom of the dispensing tray.

Abstract: A process for the polymerization of ethylene or the copolymerization of ethylene with an alpha-olefin, in suspension or in gas phase, in the presence of a catalyst consisting essentially of a cocatalyst and a catalytic component based on at least Mg, Ti and Cl, with the catalytic component being constituted of at least one derivative of magnesium and one chlorinated derivative of titanium in its form III and/or IV, which was subjected, prior to its use, to a reduction treatment and then to treatment with a chlorinated transition metal compound, with the said catalytic component being characterized in that the magnesium derivative is in the form MgCl.sub.2.MgO.

Abstract: An adhesive composition for joining carbon-carbon composites comprising a polymeric thermosetting polysilazane, a ceramic powder, silicon powder, and carbon powder. The invention also comprises the method of making carbon-carbon composite structures utilizing such adhesive composition and to the resultant products.

Abstract: An adhesive composition for joining carbon--carbon composites comprising a polymeric thermosetting polysilazane, a ceramic powder, silicon powder, and carbon powder. The invention also comprises the method of making carbon--carbon composite structures utilizing such adhesive composition and to the resultant products.

Abstract: An elastomeric polysulfide composite in which rubber particles, particularly crumb rubber, are distributed substantially uniformly through an elastomeric polysulfide layer, roofing made from such composites, and the method of forming roofing in which the composite is associated with a rubber particle mat.

Abstract: A process for the manufacture of MgCl.sub.2.MgO with narrow granulometric distribution by treatment of hydrated MgCl.sub.2 with an alcohol followed by heat treatment after partial elimination of the alcohol, characterized in that the hydrated MgCl.sub.2 is suspended in the alcohol, and that the molar ratio of the alcohol to the hydrated MgCl.sub.2 is lower than the solutility ratio of these two substances at the temperature of the suspension. The resultant MgCl.sub.2.MgO can be employed as a support in catalytic components for the polymerization of olefins.

Abstract: A magnesite-carbon refractory mix for forming refractory shapes containing magnesite, graphite, and a fine particle size metallic additive consisting essentially of a magnesium-aluminum alloy co-milled with magnesite and refractory shapes and refractory linings made therefrom.

Abstract: The invention is a device for separating blood cells from biological fluids, preferably plasma from whole blood. The invention includes a nonabsorbent, porous unitary support, which is desirably made of glass fiber, and a blood cell binding composition, such as a lectin. This device provides a test kit for measuring a plasma analyte in whole blood. This kit separates plasma from the whole blood, exposes the plasma to reactants that detect an analyte, and provides a chromatic or other result in response to exposure to the analyte. A desirable embodiment of the device has a cover plate over the reaction pad to apply uniaxialy pressure to the reaction pad which controls migration of plasma. The invention includes a method for separating plasma from whole blood and a method for detecting an analyte.

Abstract: A magnesium electrolysis cell having a refractory lining comprising at least one glass-ceramic shape, the lining itself, and the method of increasing the service life of the refractory lining of a magnesium electrolysis cell comprising using a plurality of glass-ceramic shapes to form the lining.

Abstract: Method and geometrical arrangement of refractories within a high temperature vessel. A protuberance near the periphery of the vessel opening is formed on an inner surface and a ring of trapezoidally-shaped refractory brick is positioned such that a sloping surface of each of the trapezoidally-shaped brick is preferably initially in contact with an adjacent surface of the protuberance. When the interior of the vessel is heated and the brick expand, they tend to ride upwardly, with the sloping surfaces urging the brick inwardly thereby increasing lateral friction therebetween, thereby holding them in place and preventing them from moving even when the vessel is tilted or turned upside down.

Abstract: A heat reservoir device for maintaining a comestible at a desired consumption temperature consisting essentially of a shaped reinforced thermoset polyester resin, preferably one made by reacting isophthalic acid, propylene glycol, and fumaric acid to form the unsaturated polyester and then forming a solution thereof in a vinyl monomer. The invention also include the method of maintaining a comestible at a desired temperature using such device.