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: Method and apparatus for the production of molded bodies which are shaped by means of a filtration-dehydration process wherein such bodies after shaping are subjected to a rolling movement preferably by means of a roller conveyor to strengthen and homogenize the same before being further processed.

Abstract: A method for manufacturing an opening device for a package is disclosed. The opening device comprises an outer wall portion an an inner layer of substantially gas-tight material, the outer wall portion including a first tearing notch defining an opening and a second tearing notch defining a grip tongue, and the outer wall and the inner layer being interconnected substantially over their total surfaces facing each other with the outer wall portion and the inner layer being separated within an area substantially under the grip tongue. The method comprises the steps of coating the inner layer with an adhesion preventing coating within an area corresponding to said grip tongue, and connecting the inner layer to the substantially rigid outer wall portion.

Abstract: Synthetic resin bodies reinforced with fiber, roving or the like can be made, in accordance with the invention, by impregnating the reinforcing material with synthetic resin and then casting a hardenable liquid around the resulting body to form a mold in situ therefor. The synthetic resin material is thus permitted to harden in the solidified mold material whereupon the mold material is removed.

Abstract: An anisotropically electroconductive sheet of a non-electroconductive elastomer and electroconductive wires which have a length substantially the thickness of the sheet. The electroconductive wires are oriented from each other and are formed into patterned wire groupings, which are in turn formed into patterns. The wires in the groupings are parallel in the directions of the sheet thickness, and the wires are spaced from each other in the wire groupings, and are thereby electrically insulated from each other.

Abstract: A method and system for cooling an injection molded plastic article by forming a portion of a mold cavity of fluid permeable porous material that communicates with a cooling liquid passageway and subjecting the cooling liquid to different pressures to vary the flow of fluid through the porous plug.

Abstract: Method of producing a continuous flexible tubular conduit having a plurality of helically wound reinforcing-electrical wires is provided wherein the apparatus has means for forming a plurality of wires into a corresponding plurality of substantially identical continuous non-rotating helical coils without entanglement of such wires and an extruder head for extruding a polymeric tube around the coils with the coil turns coaxially aligned and alternately arranged to complete the tubular conduit.

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 method for the manufacture of man-made fish-gathering plates having specific gravity between about 1.2 to 1.8 comprising the steps of providing a charge of raw material consisting of subdivided composite plastic consisting of at least two types of thermofusible plastic material or at least one type of thermofusible plastic material and non-plastic material, forming a molten mass from said charge of raw material by mixing by an agitator said charge with particulate inorganic material so the molten mass contains 25 to 70 weight percent of thermofusible plastic material as a bonding agent, said inorganic material being preheated to a temperature suitable for melting the thermofusible plastic material as a bonding agent and said agitator being kept at substantially the same temperature, charging the molten mass into a mold in a press machine to form it into a shape conforming to the shape of the mold, and after cooling solidifying the resulting shaped article, removing it from the mold.

Abstract: An inplace gasket belling machine wherein a plastic pipe is received in a tilt clamp fixture and tilted thereon for receiving a heating bell on one end portion of the pipe. Heated fluid is directed over the inserted pipe end portion. The heating bell may be withdrawn from the pipe in intermittent steps to afford a temperature gradient along the pipe end portion. The pipe is then tilted to a horizontal disposition for the insertion of a gasket belling mandrel into the heated end portion of the pipe. A gasket magazine is supported adjacent the mandrel for automatically placing an annular gasket on the mandrel for insertion into the pipe end portion. The mandrel includes an outer housing and a mandrel body portion telescopically received within the outer housing. The outer housing has a stop shoulder and a gasket positioning sleeve extended forwardly therefrom. The mandrel body portion has a flared pipe expanding portion and a gasket carrying portion rearwardly thereof.

Abstract: A flexible preferably tubular article is described having an outer abrasion-resistant protective sleeve which is cured-in-place on a flexible core or tube to form a unitary flexible composite.

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: A method for providing a flange for an inner lining of a lined pipe including the steps of cutting the lined pipe such that the inner lining projects a predetermined distance out of an outer pipe of the lined pipe, heating the inner lining which projects out of the lined pipe until an outer surface of the inner lining melts and simultaneously heating the inside of a flange ring until it melts and placing the heated flange ring on the heated inner lining whereby a permanent bond is formed between the inner lining and the flange ring.

Abstract: In moulding a ball consisting of a cover on a hard spherical core, e.g. a base ball, or a golf ball, one of the problems is maintaining accurate location of the core in the ball. According to the invention the core is surrounded by a moulded shell having co-spherical projections which support the ball in a spherical mould in which the cover is moulded on. The shell may be of two half shells clipped together.

Abstract: A novel method is disclosed for the manufacture of a hollow graphite-epoxy structural part with high composite density and using tooling that eliminates the necessity of autoclave and similar high external pressure curing equipment. The method of manufacture in part involves the use of a rigid hollow frangible mandrel and superimposed flexible pressure bag element which subsequently develops high internal pressures in the part being processed during composite curing stages.

Abstract: Breast cups having various types of cuts or configurations are initially molded from basically flat sheets of flexible fabric on a bust cup mold having a prescribed configuration. The resulting, three-dimensional molded fabric cup then is cut by a die having a plurality of cutting surfaces, at least a portion of the outermost cutting surfaces serving as guides for alignment with the outer perimeter of the molded cup and a portion of the cutting surfaces cutting the molded breast cup to the desired shape resulting in a breast cup having a size and configuration differing from that of a bust cup initially molded.

Abstract: Articles having portions of materials with different properties are integrally formed by injection of two different thermoplastic materials simultaneously through separate gates into the same mold wherein the materials fuse or bond together. A plunger for a syringe formed by the process has a rigid shaft and an elastomeric head.

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.

Abstract: Method for making a laminated ballistic helmet from plural, continuous filament resin-coated layers. A continuous filament bundle, yarn or end is deposited on a plurality of different sized helmet-shaped preforms. A resin is coated upon or impregnated into the continuous filament bundle, yarn or end, either before or after deposition. The resulting resin containing preforms are stacked in nested relation and then molded to produce a bonded, laminated ballistic helmet.