Abstract: The ends of bundles of microporous tubing may be potted in otherwise conventional manner for assembly as a diffusion device for oxygenation of blood, blood plasmapheresis, or the like. In accordance with this invention, prior to impregnating the bundle ends in sealant, the micropores of the capillary tubing are filled with a liquid capable of entering the micropores, with the result that air in the bores of the tubing cannot migrate outwardly through the micropores as the sealant impregnates the bundle ends. This, in turn, prevents the sealant from advancing into the bores of the tubing to the level occupied by the sealant outside of the bores of the tubing, so that the ends of the potted bundle may be transversely cut within the block of cured sealant to expose open bores of the tubing.

Abstract: A method of manufacturing a resilient side bearing of the type utilized between a truck and body of a railway vehicle includes the steps of providing a bearing housing; sealing the bearing housing to form an enclosed bearing chamber, pouring liquid resilient bearing material into the bearing chamber; permitting the liquid resilient bearing material to cure and become bonded to the interior surface of the housing to form the bearing; and removing the seals after the bearing material has cured.

Abstract: A method for making a molded high voltage splice body by positioning a conductive elastomeric electrode on a mandrel, positioning an extruded conductive elastomeric sleeve over the elastomeric electrode, sealing the ends of the elastomeric sleeve, placing the mandrel with the electrode and sleeve on it into a mold, injecting a curable insulating compound between the electrode and the sleeve under pressure and curing the insulating compound.

Abstract: Cosmetic material prepared by mixing powder cosmetic material with a binder and solvent is injected under a predetermined pressure into a hollow closed space partially defined by a porous absorbing material, whereby the solvent in the cosmetic material is absorbed into the absorbing material and the powder cosmetic material is solidified in the hollow closed space.

Abstract: A one-piece disposable electrode comprising a sealed chamber containing an electrolyte solution, silver-silver chloride conductor in the electrolyte solution in the chamber and a cast-in-place membrane essentially flush with an exterior wall of this chamber for exposure to a biological fluid whose ion content is to be measured.

Abstract: A completely self-contained apparatus and associated technique for the manufacture of large fiberglass structures. In a preferred embodiment, the system is designed to manufacture large fiberglass storage tanks for liquids, and is self-contained from the point of view that the machine is capable of performing all manufacturing steps without any auxiliary equipment and may be set up virtually anywhere that can provide a source of electricity and air. The main components of the machine include an operator's carriage which is cantilevered from a rear frame so as to enable same to be inserted into the open end of a large, substantially cylindrical revolving mold having a closed, substantially hemispherical end portion. The carriage includes an overhead canopy for the protection of the operator, as well as fresh air intake and exhaust fans to provide adequate ventilation for the operator.

Abstract: Disclosed herein are prevailing torque type self-locking nut comprising a one-piece nuts each body having an internal screw thread surmounted by a well portion having an internal surface spaced from the thread axis a distance greater than one-half the major thread diameter, and a thin-walled self-locking element of thread impressionable thermoplastic material at least partly in the well portion and having an external surface secured by adhesion to the internal surface of the well portion and an internal surface spaced from the thread axis a distance less than one-half the major thread diameter. Also disclosed herein are a method of making such nuts, the method involving melting powder of the thermoplastic material in situ in the nut body, a pin useful in carrying out the method and nut body components of the self-locking nuts.

Abstract: The present invention provides a method for preparing an inlay in golf irons which includes preparing an iron having a large cavity in its back and placing a preselected number of small weights in the bottom inner spline of the club and covering said weights with a first layer of epoxy. A second layer of epoxy having a decorative material included is placed over the first layer shortly after the first layer has set. During the setting of the second layer it is swirled a number of times. A protective coating is applied over the second layer after it has substantially cured.

Abstract: A method of making an intumescent seal comprises: providing a tubular holder having a longitudinal bore or interior chamber defined by a thickened longitudinally extending portion of the holder contiguous with a relatively thin wall of the holder; filling the bore of the holder with solid intumescent material; and thereafter removing a longitudinally extending part of said thickened portion thereby to leave part of said thickened portion as a baffle within the holder, the space left by said removed part forming a strait having a longitudinally extending opening to the exterior of the holder and a longitudinally extending opening to the bore of the holder. Preferably the thickened portion is square or rectangular and at a corner of the holder and the removal of said part of the thickened portion leaves two webs one of which constitutes the baffle and the other being at the exterior of the holder.

Abstract: Method for installing a sealing body in a groove of a socket by forming a closed space in the inner side of the socket. Said closed space is bound by an inner core and an inflatable core being connected with each other by a connecting wall part and is filled with a flowable thermoplastic elastomer through an opening in the wall of the groove. After setting of the thermoplastic elastomer, the two cores are removed.

Abstract: The present invention is directed to a low cost accumulator device and the method of making the same. The device is fabricated by utilizing the shell or pressure vessel as a mold component wherein a bladder is molded in situ, the bladder being bonded in the course of the formation thereof to the interior of the vessel and preferably also to a valve member.

Abstract: A blow-moulded hollow body has an insert anchored in a wall of the hollow body by wall portions which penetrate openings in a projecting portion of the insert from both sides during the blow-moulding process and which are welded together at these openings. A wall portion of the hollow body is afterwards cut away to form an access opening and the insert is adapted to receive a closure cap for this opening. In another embodiment, the insert has a carrying handle attached thereto.

Abstract: A concrete product making machine having a counter rotating packerhead assembly and a concrete supply control operable to maintain a desired amount of concrete in the mold above the packerhead assembly. The counter rotating packerhead assembly has a lower packerhead unit rotated in one direction by a motor and on upper packerhead unit rotated in an opposite direction by hydraulic motors mounted on the cross head of the machine. The upper packerhead unit located above the lower packerhead unit has a plurality of rollers and an annular trowel. The trowel has radially adjustable shoes which meter the flow of concrete to the lower packerhead unit. A control system responsive to hydraulic fluid pressure supplied to the hydraulic motors controls the operation of a concrete supply conveyor operable to deliver concrete to the chamber above the packerhead assembly. The control system includes a control valve assembly operable to regulate the supply of hydraulic fluid to a hydraulic motor operating the conveyor.

Abstract: A process of forming a nozzle for discharging a fluid comprising locating in an upright position, a tubular conduit having internal threads formed on the inside thereof at opposite ends. A core having a conical shaped end is located within the conduit such that it extends out of the conduit, and is spaced from the inside wall of the conduit down to the threads at the lower end of the conduit. The conical shaped end of the core and the conduit are surrounded with a mold having its inside wall spaced from the conical shaped end of the core. The space between the inside wall of the conduit and the core is filled with a liquid material. The liquid material is allowed to harden to form an elastic member molded within the conduit. The mold and core are removed and a portion of the elastic member extending beyond the conduit is severed to form a discharge opening.

Abstract: Method for making a collapsible dispensing tube in which plastic fabricating materials other than conventional materials can be selected which are more suitable, since the pressure in the process is increased while the temperature is decreased. This manufacturing method utilizes a locking taper resulting in a better bond between the headpiece, barrier member, and the inner wall of the collapsible tube and substantially eliminating blowby of plastic material into said collapsible tube. The barrier member extends to and is tightly engaged with the adjacent inner wall of the collapsible tube and substantially eliminates bypass of gases around the barrier member. The method of manufacture permits the selection of the most suitable thermoplastic material for the intended use from a group of materials.

Abstract: A pedestal liner for a pedestal truck of a railway vehicle and method of making same are provided wherein such pedestal liner is of roughly U-shaped configuration having a bight and a pair of parallel legs and comprising a continuous uninterrupted backing material defining the bight and parallel legs, a first antifriction material for the bight fixed against the backing material and adapted to engage a vertically disposed planar guide surface of an associated journal box, a second antifriction material for the parallel legs fixed against the backing material and adapted to engage vertically disposed parallel side surfaces of the journal box which are disposed on opposite sides of the guide surface with the backing material providing optimum structural support for the antifriction materials and the first and second antifriction materials having different wear characteristics determined by the different wear rates to which they are subjected.

Abstract: A disc brake boot seal 10 (and method for assembling a disc brake system) that is molded in its extended condition and that when moved into its collapsed condition will remain in its collapsed condition. The boot seal comprises a molded elastomeric sleeve 12 having a plurality of different wall portions 20-34 certain ones of which interact to releasably hold the sleeve in its collapsed condition so that it does not self-extend. The expense and high mold breakage resulting from the prior art system of molding a seal in its collapsed, convoluted condition are eliminated by this invention.

Abstract: Method for making a sealing device comprising a door or gasket of rigid material curved in one direction and straight in another, as in the form of a portion of a cylinder, and having convex and concave surfaces. Either or both such surfaces has a circumferentially continuous groove across the straight and curved portions that contains a molded in place packing of resilient material. The packing has a portion projecting from the groove and has a recess extending into the groove. The sides of the recess are either parallel to a transverse axis whose direction corresponds to the direction of travel of the mold members relative to each other when separating so that there are no undercuts in the packing material into which portions of the mold would project and prevent separation of the mold members after the molding operation without damaging the packing.

Abstract: The invention provides for a process for constructing manhole assemblies in an excavation or elsewhere, by the utilization of an outer form, a preformed manhole barrel which is positioned and propped within the outer form pipe stub inserted partially into the inside of the preformed manhole and resting under notches cut into the preformed manhole barrel, inflatable or rigid forms (or both) are used to form simple or complex channels in the concrete which is to be poured. The form ends are adapted to fit into the pipe stub ends or may abut other forms, where complex channels are desired. The forms are carefully positioned to allow for the proper height and grade of the channel in the completed manhole assembly. Concrete is poured and when it is set, the forms are deflated where applicable and removed to be reused.

Abstract: An electrode assembly comprising an organic plastic sample flow-through tube, a portion of the wall of which comprises a membrane, the membrane comprising a matrix of an organic plastic material containing a non-volatile solvent-plasticizer and an ion exchange material dissolved in the solvent plasticizer, the membrane chemically bonded to and integral with said tube. The method of forming the membrane to the tube comprises dissolving the matrix material, the ion exchange material and the non-volatile solvent plasticizer in a volatile solvent, placing the resulting solution on a surface and evaporating the volatile solvent to form the membrane, contacting an edge of the tube to the membrane material, contacting the tube edge with said volatile solvent and allowing the solvent to evaporate.

Abstract: The piston of a piston-type machine has on its surface a heat-barrier layer of plastic material which is cast into a recess formed in the piston crown. A pouring means formlockingly enclosing the upper edge is put on the piston, held in a vertical position, to permit the recess to be overfilled with the material. The pouring means is removed after the material has hardened. Due to the shrinkage of material when the material hardens, the material and the upper edge form a flat surface on the piston.

Abstract: A process of manufacturing tires having a crown reinforcement from one or more liquid or pasty materials which solidify in a core mold is improved due to the fact that prior to the filling of the mold there is placed in the mold an elastically deformable annular net formed of two superimposed plies of parallel wires crossed from one ply to the other at an angle at most equal to 90.degree. with respect to the circumferential direction of the tire, at least the outside of the wires being formed of an elastic and weldable material permitting welding of the wires of one ply to those of the other ply at the points where they intersect, the net being placed in the mold with its edges equidistant from the equatorial plane of the tire.

Abstract: The invention relates to games racket frames which are made from reinforced plastics material and have a hollow construction. The particular construction and method of the invention enable a satisfactory hollow product to be made by an injection moulding technique instead of the more laborious technique of building a suitable reinforced hollow construction around a mandrel.The frame is a hollow injection moulding of reinforced thermoplastics material in which the walls (21A and 21B) at the outer and inner circumference of the head (21) are joined by support means (25) through which the stringing holes (23) pass. The support means are integrally formed during the moulding.The method of the invention involves the use of a fusible core (10) which is shaped to provide the desired moulding with support means and which is melted out after the moulding is formed.

Abstract: An outer ring frame and an inner ring frame are separately prepared and disposed coaxially in a mold die with an annular space therebetween and a synthetic resin is injected into the annular space.

Abstract: A fiber roll and a method for producing the fiber roll comprising a load carrying shaft portion and having thereon a cover portion made of fiber material. The cover portion is made by subjecting a great number of annular fiber material sheets fitted on the shaft portion to a very strong compression in the axial direction of the roll. The method includes the step of making at least one supply duct leading from an end portion of the roll to the interface of the shaft portion and the cover portion. After the axial compression of the fiber material, a hardening fluid is fed through the supply duct and pressure is applied thereto so as to force the fluid to penetrate between the cover portion and the shaft portion and to fill all possible cavities between the shaft portion and the cover portion.

Abstract: Disclosed herein is a prevailing torque type self-locking nut comprising a one-piece nut body having an internal screw thread surmounted by a well portion having an internal surface spaced from the thread axis a distance greater than one-half the major thread diameter, and a thin-walled self-locking element of thread impressionable thermoplastic material at least partly in the well portion and having an external surface secured by adhesion to the internal surface of the well portion and an internal surface spaced from the thread axis a distance less than one-half the major thread diameter. Also disclosed herein are a method of making such a nut, the method involving melting powder of the thermoplastic material in situ in the nut body, a pin useful in carrying out the method and a nut body component of the self-locking nut.

Abstract: A reaction injection molding process for producing a coated polyurethane part in which a liquid mixture of polyurethane reactants is injected into a mold where it is reacted and molded into a shaped part at elevated temperatures. The surface of the mold is coated, prior to molding, with a coating composition containing a polyurethane catalyst. The catalyst acts to bond the coating composition to the molded part so that the shaped part upon removal from the mold contains a firmly adherent coating of the coating composition.

Abstract: A method of preparing a cushion or like padded article comprising a plasticized vinyl chloride polymer cover filled with foam in which the cover is shaped and the foam prepared in situ within the cover, wherein a superior bond between the cover and foam is achieved by coating the interior surface of the cover prior to foaming with a primer composition comprising:(A) a latex of butadiene-acrylonitrile copolymer containing a hydroxyl or carboxyl group; and(B) a latex chosen from the group consisting of natural rubber, styrene-butadiene latex and mixtures thereof in an amount sufficient to promote bonding and wherein the weight ratio of (A) and (B) is from 4:1 to 1:4.

Abstract: The invention is concerned with a process for forming a unitary seal comprising a support section formed of a high modulus, i.e. rigid high impact strength plastic and a sealing section formed of an elastomeric material, the support and sealing section being directly bonded together without the use of an adhesive therebetween to form the unitary seal. The process comprises contacting a surface portion of the support section directly with a surface portion of the sealing section, under sufficient pressure to assure a pressed contact therebetween, with the sections at a temperature of 50.degree. C.-400.degree. C. for a time sufficient to cause bonding between the contacting surface portions to form the unitary seal.

Abstract: Apparatus for manufacturing an at least partly tubular body, provided with an elastic sealing ring accomodated in an internal groove in said member. In a moulding cavity of a mould first the tubular member is formed of plastic synthetic material, thereafter an annular cavity is arranged in the mould adjacent the outer surface of the body and subsequently a pressurized thermoplastic deformable material is brought against the inner surface of said body which material is an elastomer at the temperature of its normal use. Thereby the body is forced into the annular cavity and is simultaneously forming the internal groove, which is filled with elastomeric material.

Abstract: A method of manufacturing the molded hub of a print wheel of the type having a central axial passage of precise diameter and a plurality of elastically deformable, concentrically arranged character carrying radial arms. A metal ring carrying radial passageways is centered in the mold cavity used for forming the hub, etc., and a plastics composition is injected into the mold cavity only through the center of the ring and by way of the radial passageways whereby the metal ring becomes a unitary permanent part of the hub and defines the central axial passage. After the molding, the molded structure is released from the mold and the remainent central plastic plug easily is sheared from the ring, as by punching, for example. Remainent plastic material left within the radial passageways functions supplementary to maintain the stability and concentricity of the ring and hub assembly.

Abstract: The method of making a ceramic article which includes forming the object in a mold, removing the object, drying, sanding and baking; the improvement which comprises the intermediate steps before drying the molded object of carving out a recessed area in the exterior of the object wall and further carving an undercut groove in the wall peripherally communicating with the recessed area throughout 360 degrees. Further steps after baking the molded object include cementing a sheet having a picture, ornament or design thereon to the wall of the object within the recessed area and filling the recessed area and undercut groove with a transparent self-drying resin.

Abstract: An expandable member is disclosed that includes a molded body of elastomeric material with a core embedded therein. At least a portion of the core is not bonded to the body. A fluid conduit is provided through which fluid can be injected between the core and the unattached portion of the body to move the core and the unattached portion apart and expand the member.

Abstract: A method of making a plastic article and in particular a hollow plastic article having reinforcing ribs or ridges in the inner side such as an air cleaner casing, a tank or an airtightly closed float. The plastic article comprises at least two separately molded portions and at least one molded joint portion which is molded in jointing grooves formed between opposed dividing end faces of the molded portions, the molded joint portion and the separately molded portions being united into one body by fusing at their contact surfaces.

Abstract: A process for manufacturing artificial breasts uses a two-component silicone rubber composition capable of a cross linking addition reaction, has cups sheathed by plastic sheeting layers initially joined by welding except for one opening through which the silicone composition is introduced under pressure and then the composition is vulcanized and the opening closed by welding.

Abstract: The instant invention is directed to a process for the production of molded polyisocyanate-based foam products having a compact, light- and yellowing-resistant polyurethane-based top layer comprising the steps of:A. coating a mold with a liquid polyurethane-polyurea-based coating agent, containing a binder, which reacts to form a light- and yellowing-resistant top layer andB. introducing a foamable reaction mixture into said mold,wherein said binder comprises:(i) at least one isocyanate prepolymer having at least two exclusively aliphatically and/or cycloaliphatically bound isocyanate groups and(ii) a hardener mixture composed of water and primary polyamines, at least partly in aldimine- or ketimine-blocked form, which have aliphatically and/or cycloaliphatically bound amino groups.

Abstract: A nozzle comprising an elastic member molded in a conduit having oppositely disposed threads at opposite ends. The elastic member embeds all of the threads at the down stream end, a portion of the threads at the up stream end and extends out of the down stream end defining a discharge end. An aperture extends through the elastic member and is conical shaped at the discharge end thereof.

Abstract: A two part pressure-relief valve is made and assembled to a container part by making a lid for the container with a through-opening, injection molding into the opening a valve housing having a valve chamber, and pressing a valve into the valve chamber.

Abstract: A process for making a panel having a supported member formed either of a simple or multiple glass window and a supporting part formed of preformed parts received on and at spaced locations around the glass window for supporting a light frame thereby to accommodate the panel for use as a window or door.

Abstract: This invention relates to a method for making concrete conduit. The method of this invention pertains to forming a conduit mat of material on a form, advancing the formed conduit mat of material from the form, fastening the conduit mat together, cutting the conduit into desired lengths, applying concrete on the conduit mat, working the concrete from both the inside and outside of the conduit mat to form smooth surfaces on both surfaces of the concreted conduit mat and curing the concreted conduit mat to form concrete conduit. In one embodiment of this invention, the method is performed from a mobile base which moves forward as the concrete conduit is continuously made and layed on the ground or underwater.

Abstract: A method of making a wall of a container which wall is to be ruptured to gain access to the interior of the container, the method comprising forming a weakening in the wall corresponding to the path along which the wall is to be ruptured, locating the wall between mould tools which are formed as to one of them with a bead recess which will overlie the weakening and as to the other with a rupture recess in register with the bead recess, injecting material into the bead recess to displace the wall regions adjacent the path into the rupture recess to further weaken the connection between the wall parts to either side of the said path, and to form a seal therebetween and removing the wall from the tools.

Abstract: A pencil, in particular for cosmetic purposes, is made by casting a stick composition into a tubular body, which forms the shaft of the pencil and is preferably seamless, in such a way that a ready-to-use exposed stick point is formed during casting.The shaft may be of wood or plastics. In the case of a wooden shaft, a solid wooden rod of twice the shaft length may be bored out and otherwise worked and then separated along a central plane transverse to the axis of the rod to form a pair of shafts into which the stick composition can subsequently be cast.

Abstract: A method of making a plate cylinder for a web printing press in which a hollow cylinder with a conical interior is formed of ductile steel. Two nickel printing plates are formed to shape so that they will fit virtually exactly around the cylinder without joins between them being readily apparent. A cylindrical mould having two semi-cylindrical mould halves is formed with its inner diameter equal to the outer diameter of the plate cylinder being produced. One mould half is placed with its semi-cylindrical inner surface facing upwards and a printing plate is placed inside. Then the hollow cylinder coated with epoxy resin is placed on this plate, and the other printing plate is placed on the cylinder. The second mould half is secured to the first half, and a conical core is forced into the cylinder to expand it radially so that the plates are held under pressure against the mould surface. Then the mould is heated and the resin allowed to set under conditions of temperature and pressure.

Abstract: A standardized access card is formed of a single or a pair of bonded sheets of material including a cavity within which is disposed an integrated circuit assembly for processing electrical signals arranged within the card. The thickness of the assembly is relatively smaller than the thickness of the card and terminal areas of the assembly are accessible through cut-outs in the card which may be open or plugged with conductive material. The card may be formed in a continuous process from a plurality of strips of material which separately provide the card material, the integrated circuit assembly and a cover for the device of the circuit assembly.

Abstract: A method for supplying a prepreg having substantially no excess resin while at the same time having an aggressive tack. Small discrete amounts of additional resin are selectively applied to a surface of the prepreg sheets in a regular array. The resin is applied at a sufficient viscosity that it does not sink into the prepreg fabric. The additional resin typically covers less than 25% of the surface and constitutes between 0.1% and 3% of the prepreg weight. The additional resin may be applied by a gravure roller having a surface etched with an appropriate array of indentations. A doctor blade partially defines a reservoir of resin in contact with a portion of the gravure roller and wipes the surface, thereby leaving resin only in the indentations. The doctor blade may be oscillated parallel to the roller axis to prevent accumulations of short fibers from impairing the wiping action.

Abstract: A method for the preparation of composite products wherein a foam expands in contact with a laminated sheet, one of the layers of which is metallic, the pressure generated during expansion of a foam forces the laminated sheet to adopt a desired configuration and the foam adheres to the laminated sheet. Composite products having a mirror-like appearance may be prepared by the method.

Abstract: The invention permits the lining of a passageway or pipeline with a resilient but robust, semi-rigid plastics pipe. The invention enables the lining of pipelines and passageways of long length by extruding the lining tube on site, deflecting the tube so that it is deflected into smaller diametral size, holding the tube in the deflected condition, feeding the deflected and held tube into the passageway to be lined, and releasing the hold on the tube so that it deflects or is deflected back to its original form and lines the pipeline or passageway.

Abstract: A molding process, resinous formulations for use in the process, and the resulting products are disclosed characterized in that the product comprises mainly a bulk or fill resinous body having a film or skin of a cross-linked polyester resin formed about the body. Even though the body has intricate curving surface contours, the film is smooth and free of surface tears and blemishes. The product is molded by first spraying formulated, dry particles of a partially cured polyester resin against a hot female mold to cause the particles to fuse and flow and form a substantially continuous skin or film on the female mold. Thereafter, the bulk resin is added and the mold is heated to cure the polyester resin as well as the bulk resin and to interreact the bulk and polyester resins together to mold the bulk resin with a film of the polyester resin.

Abstract: A method of making three-dimensional simulated stained glass objects from resins. A sheet of resin having the ornamental pattern of the object printed on it is preformed substantially to the shape of the object. The preform is inserted in an injection mold for being reinforced on one side or another with a thicker resin layer. Mounting flanges, bosses, ribs, interlocking joints and other mating configurations are formed with the reinforcing layer to enable combining a molded three-dimensional section with other three-dimensional sections to form more complex objects. The printing on the flat resin sheet is pre-distorted, as required, so that when it is formed to the contours of the object the printing will assume a proper undistorted form.

Abstract: Bushing and sleeve assembly are attached in an alignment fixture and placed in the stay ring-discharge ring. An internal pilot bearing is placed in the headcover to accommodate an aligning bar which is lowered through the headcover and pilot. The lower end of the aligning bar is engaged with the aligning fixture and the pilot can then be engaged with the headcover to automatically align the bushing and sleeve assembly with the two headcover bushings at the upper bearing pilot and the internal intermediate pilot.