Abstract: A pulverulent mix, sprayable when mixed with a liquid for forming a stable, cement-bonded insulating refractory which can be sprayed onto vertical and overhead surfaces without deformation, comprising a lightweight and/or dense refractory aggregate, a calcium aluminate cement, a microsilica, a ball clay, and a superfine refractory. The superfine refractory comprises 2 to 15 wt. % of the mix and the -325 mesh portion of the mix being from about 40 to 60 wt. %.

Abstract: A medical slide holder for use in medical procedures including automated microscopy. The slide holder comprises a rectangular frame adapted for receiving slides of differing thicknesses. Compensation for differing thicknesses is achieved through the disposition of two fastening caps, one for each end of the slides, the caps having resilient extending fingers which contact upper surfaces of the slides near their ends. Precision positioning of the slides within the holder is facilitated through provision of slide-supporting ledges having partitions to define positions of the slides; and precision positioning of the holder frame is facilitated through the provision of angled corners and notches each having a right angle and an obtuse angle. The slide holder has a recessed indentation in both the upper and lower locking caps to facilitate their removal once engaged to the frame, thus allowing slide specimens to be removed from the slide carrier for archiving purposes.

Abstract: A combination suction coagulator and dedicated bending tool for customizing working surfaces of suction coagulator instruments. A working extension of the coagulator is provided with an improved insulating coating and is adapted for customized bending with a dedicated tool that has at one end a recess with a centrally located mandrel pin for insertion into the hollow interior of the coagulator extension. A curved channel is provided in cooperative association with the recess and mandrel pin so as to limit the radius of any bend that may be made by the user. That, in combination with the form-fitting mandrel pin provide a ready way of bending the distal extremity of the coagulator extension while maintaining its internal geometrical integrity. The tool also includes a custom stylet for use in cleaning accumulated debris from the interior of the working extension.

Abstract: Method and apparatus for measuring pressures of fluid materials used in medical procedures where purity and freedom from contamination are essential. An adapter having one or more highly resilient diaphragms therein is disposed serially within a passage leading to a pressure gauge from the material whose pressure is to be measured, thereby isolating the material which is on one side of the diaphragm(s) from the volume on the other side while at the same time transmitting the pressure from the material therethrough. By carefully selecting the characteristics of the diaphragm material, the desired sensitivity of pressure conduction is achieved while maintaining the integrity of the respective volumes on both sides of the diaphragm, achieving re-usability and preventing contamination.

Abstract: An improved pinch mechanism for a fluid flow control assembly. It comprises a trumpet-type actuator moveable along its principal axis to control flow through an associated resilient tubular member. Interconnected with the actuator is a caming assembly having a roller guide with a principal surface sloping at an acute angle with respect to the actuator principal axis. Engaging with that principal surface is a dog-leg shaped cam follower that is pivoted at one end for partial rotational movement about the pivot. It is spring loaded to normally retain it in a position in which a proximal end of the follower is pressed on a resilient surface of the tubular member to squeeze it closed. Partial rotation of the cam follower occurs when the actuator moves along its principal axis and the cam forces the cam follower to move through an arc that permits the squeezed tubular member to assume its normally unsqueezed and open shape.

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 fire retardant mat is disclosed comprising rubber particles bonded together with a binder containing an elastomeric polysulfide and a polyolefin, with the mat also containing a fire retardant. A composite is also disclosed in which the mat is coated with a fire retardant coating in which an elastomeric polysulfide is part of the coating. Further, there is disclosed a method of making the mat by extrusion and also of placing a fire retardant coating on the mat after extrusion.

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 method of repairing damage to an oxidation-resistant layer on a carbon-carbon composite wherein a composition consisting essentially of a polymeric thermosetting polysilazane and a ceramic powder is applied to the damaged area, cured, and fired.

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 method of immobilizing toxic waste material slurries is disclosed wherein aggregates are formed containing the toxic waste and the aggregates admixed with and embedded in a sulfur cement to form a concrete shape.

Abstract: A catalytic component having controlled structure for use in combination with a cocatalyst for the polymerization of ethylene, and being the product of the process of subjecting a component consisting essentially of titanium, magnesium, and chlorine to a reduction treatment and after such treatment contacting the component with a transition metal chlorine-containing compound and process of polymerizing ethylene using such catalytic component to produce polymers having a broad molecular weight distribution.

Abstract: A vessel for very high temperature materials having an upper terminus with an annular surface and at least one refractory abutting the inner surface of the vessel and extending across the annular surface and an embodiment wherein a wedge-shaped member abuts the inner surface of the vessel.

Abstract: A apparatus system is disclosed for time beneficiation of kish to produce coarse high purity graphite wherein a concentrate containing at least about 90% carbon is formed, treated with a dilute acid solution, and the pulp then subjected to an adjuvant-assisted attrition to form a novel synthetic flake graphite of 99+ wt. % carbon with at least 70% of the mass retained on +100 mesh, and an overall recovery of graphitic carbon from the feed of greater than 85% by weight.

Abstract: A hair styling device comprising an elongated shaped outer covering, a deformable elongated structure within the interior of said device capable of being repeatedly bent to form said device into a variety of shapes, and an essentially centrally located elongated opening within the material to expose a central region of the deformable elongated structure, the essentially centrally located elongated opening being adapted for partial withdrawal of the central portion of the deformable structure to permit hair to be passed through a region lying between the withdrawn portion of the deformable structure and the elongated opening.

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.

Abstract: A hair styling device comprising a resilient member of elongated material, the device having at its upper extremity a pair of juxtaposed apertures joined by a raised hump. The device includes an additional plurality of apertures formed in a lower serpentine shaped extension. Locks of hair are extended through the apertures and held in place while the user is braiding them. Thus, multiple locks can conveniently be braided by the user with two hands only, thus obviating the necessity for assistance from a third party. The invention also includes a method of braiding hair utilizing the foregoing device.

Abstract: An instrument for use in electrosurgical procedures wherein coatings of two different materials are disposed on external surfaces. The first of these materials is selected to provide the principal insulating qualities desired, whereas the second is included to provide an indication of deterioration. The relative characteristics between the two coatings is selected so that when the visual appearance of the second coating progresses to a predetermined level, the insulating qualities of the first coating will still be satisfactory but approaching a point when the instrument has reached the end of its useful life, thus providing a ready and passive visual indication of the time when the instrument should be replaced.