Abstract: A method of providing hollow cast products using a filling unit wherein a non-solid material is filled into elastic molds having open bag shaped interior filling sections by a filling nozzle insertable internally of the filling sections of the elastic molds and a blowing nozzle for blowing air into the filling section, which includes: partly filling the filling sections of the elastic molds with the non-solid material, and blowing air into the partly filled filling sections before the material solidifies to blow the material upward and solidify the material on the inner peripheral surface of the filling sections.

Abstract: An apparatus for simultaneously molding separate portions of an article which may be subsequently assembled to form the complete separable article. The apparatus includes separate mold portions which, when assembled, define a molding cavity in which each of the mold portions has an outwardly extending flange. The mold portions are fastened together such that the flanges are spaced apart a distance at least twice as great as the thickness of the article to be molded. The mold portions extend along a longitudinal axis and each defines a molding surface which extends around the axis less than 360.degree.. When the mold portions are assembled, the molding surfaces extend completely around the longitudinal axis. The mold also includes silicone bead elements extending along the longitudinal axis in the space between the spaced apart flanges.

Abstract: A method of manufacturing a large-sized, thin-walled, elongated molding of fiber reinforced, hardenable synthetic resin where at least one layer of reinforcing fiber is laid against a form-retaining, rigid inner mold part, a flexible outer mold part is placed against the fiber layer, a liquid, hardenable synthetic resin is flowed into the mold cavity through openings in the mold parts to substantially fill the mold cavity, and a reduced pressure is induced within the mold cavity to cause the flexible outer mold part to be tightly drawn against the fiber layer and toward the inner mold part, air to be removed from within the resin, mold cavity and fiber layer and to cause the resin to flow into the fiber layer and mold cavity, whereby a high fiber-to-resin content molding is produced. The reduced pressure is maintained until the resin has sufficiently hardened as to be shape sustaining. Multi-channeled cores may be placed in the so-formed mold cavity to improve the uniformity of resin distribution.

Abstract: A method for molding a tire tread element by injecting a rubber mixture through injection holes of an injection mold formed by moving two cooperating mold elements toward a cylindrical drum disposed therebetween. The mold elements sealingly match to an outer surface of the inflatable drum to define a mold cavity of a cross-section and length selected to form a tread element of precisely defined shape and size. A breaker layer may be integrated with an injected rubber mixture and the tread element may be made to be completely circular or linear with matchingly formed end surfaces enabling secure adherence thereat.

Abstract: A ski and a process of forming a ski, including injecting foam within a tubular compartment constituted by a deformable and stretchable membrane made of polyurethane or copolyamide or ABS. During expansion the foam deforms the membrane and presses the elements against the peripheral walls of the ski maintained in the mold.

Abstract: A method for manufacturing a composite bicycle frame adapts stepped forming. The seat stays combined with the seat support means which are connected to parts of the top tube and seat tube, and the chain stays combined with the pedal support means which are connected to parts of the down tube and seat tube, are formed respectively. The seat stays connect to the chain stays by inserting a pair of rear wheel dropouts therebetween, to form substantially a pair of rear triangles of the bicycle frame. The seat tube and the steering support means connected to the top tube and down tube are laid up respectively. The cured rear triangles connect to uncured seat tube and steering support means associated with top tube and down tube, wherein the top tube, down tube, and seat tube form a front triangle. The front triangle is cured such that manufacturing of the whole bicycle frame is completed.

Abstract: A method of forming a hollow structure in a female mold includes the step of assembling a vacuum bag and an uncured composite layer assembly comprising a fiber reinforced resin in a female mold, so that the composite layer assembly extends along the inner surfaces of the mold, and so that the vacuum bag is received inside the composite layer assembly in the mold. The method further includes the step of evacuating the area between the vacuum bag and the composite layer assembly, so that the vacuum bag applies outward pressure to the composite layer assembly in order to urge the composite layer assembly outwardly against the inner surface of the mold. The method still further includes the steps of curing the composite layer assembly while maintaining a vacuum on the area between the composite layer assembly and the vacuum bag, and thereafter releasing the vacuum and removing the cured composite layer assembly from the mold.

Abstract: An elastic mold consists of a product molding section in which a fluidized charging material is charged and solidified to form a molded product, and a mold holding section formed integrally with a take-out opening which is contiguous to the product molding section and which is smaller in size than the molded product. The take-out opening contiguous to the product molding section and the mold holding section is of uniform thickness and is curved smoothly.

Abstract: In the production of a hollow FRP article such as a wood type carbon black golf club head, a hollow resin shell is formed via blow molding, heat-resistant fine particles are filled as a filler into the interior of the resin shell, the interior of the resin shell is decompressed to form an inner mold, the inner mold is covered with FRP prepreg including thermoplastic resin to form a prepreg composite, the prepreg composite is heated in a metallic mold under pressure and the fine articles are removed after demolding. A golf club shaft is formed by heating a mandrel, applying thermoplastic resin powder to the mandrel and then winding a lamellar prepreg around the mandrel to thereby form a hollow shaft. A golf club is formed from a head and shaft formed as described above by enlarging the end of the shaft, placing the shaft and the head in a mold and heating the mold under pressure.

Abstract: A rotor blade, whose principal structural components are of fiber-reinforced composite material, includes a spar, fairing skins, spar wraps, splices and doublers in the precured condition cut from rolls of raw stock into flat sheets having the dimensions of the components in the assembled position and laid one laminate upon another laminate to the desired thickness dimension. A noseblock and trailing edge block are precompacted and formed to desired shapes and sizes in the precured condition. A honeycomb core, formed to the contour of the trailing portion of an airfoil behind the spar, is prepared. Molding tools, one tool having the contour of the upper blade surface and another tool having the contour of the lower blade surface, each tool adapted for assembly together so that their inner surfaces envelop the outer blade surface, are formed and adapted to receive the components of the blade therein.

Abstract: In a method of manufacturing optically readable discs (1) a substrate (5) is placed on a movable substrate carrier (21) and by moving the substrate carrier it is subsequently placed in a centered position on a previously applied amount of replication material (11) on a mold (15). In this position the substrate is fixed to the mold, after which the substrate carrier releases the substrate and the replication layer in the structure zone (3) is solidified.

Abstract: A method of manufacturing a pipe liner with which a pipe is internally lined,forming a tubular body from a lengthy rectangular belt of a resin-absorbable flexible material by sewing the longer sides of the rectangle together; andcoating either the inner or outer surface of the tubular body with an airtight plastic film, for example, by:(a) inserting the tubular resin-absorbable flexible material into the airtight plastic film tube;(b) wrapping the two-layer tube with a tubular film of release means;(c) inserting an inflatable bag into the multi-layer tube;(d) pneumatically inflating the inflatable bag to thereby radially press the multi-layer tube from inside to thereby cause the multi-layer tube to become cylindrical;(e) causing the airtight plastic film to adhere closely to the resin-absorbable flexible material by removing the air trapped between the resin-absorbable flexible material and the airtight plastic film tube by drawing the air from the resin-absorbable flexible material by means of a suction mea

Abstract: A method for fabricating a composite swashplate ring utilizing a thermoplastic expandable mandrel which is rigid during braiding, yet softens after resin impregnation to allow expansion in a mold to increase fiber consolidation. Preferably, the mandrel accepts the incorporation of preformed structures prior to braiding with the braided mandrel suitable for incorporation in a resin transfer mold such that a dry fiber braided article having preformed structures may be impregnated with resin and consolidated to produce a net-shaped composite swashplate ring without machining.

Abstract: A method for moulding a two-colored material includes moulding a gasket such that it has a profile which is approximately the same as a profile of one of a plurality of possible corresponding regions of the inner surface of a mould. In addition, a rigid material is embedded in the gasket and the gasket is fixed to a separation wall. The gasket and the separation wall are then inserted into the mould with the gasket being aligned along the one of the plurality of possible corresponding regions of the inner surface of the mould, such that a seal between the inner surface of the mould and the separation wall is formed and first and second half-spaces are defined within the mould. The gasket is compressed against the inner surface of the mould to improve the sealing therewith and slush moulding of a layer of a first colored material within the first half-space is performed. The layer of the first colored material is consolidated and the gasket and the separation wall are removed from the mould.

Abstract: The method of making a sports racket frame with improved string holes includes a predetermined number of insertion pins pre-arranged in the molding cavity. The inner wall surface of the molding cavity adjacent to each insertion pin is filled with the fiber cement made of materials identical in quality with those making up the tubular strip used to form the racket frame. The sports racket frame so attained is composed of string holes which are integrally and simultaneously made with the racket frame as a unitary body and are provided with tubular support wall extending along the circumference thereof to reinforce the structural strength of the racket frame.

Abstract: A generally hollow or foam filled, light-weight wheelchair chassis is constructed from composite materials preferably by compression molding using sheet molding compound for volume production, or by resin transfer molding for the production of smaller numbers of units. Each chassis side may be formed in one or two side portions Two-portion side construction is preferred for compression, and the portions may be molded as a left segment and a right segment that are joined vertically, or as an upper segment and a lower segment that are joined horizontally. Joining may be by conventional pin and socket devices, lap joints, or tongue and groove joints. Manufacture by resin transfer molding is preferred when each chassis side is to be made in one-piece. Metallic elements may be placed into the molds prior to curing, or bonded to the chassis following curing. Reinforcing ribs may also be integrally formed with the sides, or separately formed and attached by suitable bonding or attachment techniques.

Abstract: A method for the manufacture of polymer products from cyclic esters, according to which a catalyst and cyclic monomers are mixed in a mixing chamber and are optionally brought to a higher temperature, after which the mixture is injected, under pressure, into a cavity of a mold consisting of at least two parts and the mold is heated for some time at a temperature above the melting temperature of the monomers, after which the mold is opened and the product is removed from the mold. Polymer products manufactured by this method can be used in medical fields and particularly in reconstructive orthopedics.

Abstract: A method of making ducts having outwardly extending ribs formed integrally with the duct structure. Two tubes are formed from fiber reinforced resin materials, a uniform inner tube and a ribbed outer tube, then the inner tube is bonded with in the outer tube to form a high strength ribbed duct. An outer tube is formed by placing resin impregnated fibers over a cylindrical mandrel having an inflatable bladder on its surface, placing a plurality of spaced rings tightly against the outer surface, pressurizing the bladder to expand the tube into the spaces between rings to form low ribs, then gradually moving the rings toward each other to press the ribs therebetween and form thin upstanding ribs. The inner tube is formed by placing resin impregnated fibers on a slightly thinner mandrel that also has a surface bladder. When both tubes are formed, the mandrel is removed from the outer tube and the inner tube and mandrel are inserted therein and the inner tube bladder is inflated.

Abstract: The invention provides an apparatus and method by which an opening into a lateral pipe connection for a pipeline into which a liner is being installed may be sealed and protectively lined. The invention features a bushing which is emplaced in the lateral connection by use of an expandable mandrel and a control means. The bushing includes an integral heating element for softening the thermoplastic material from which the bushing is formed. O-rings are positioned between the bushing and the lateral pipe to form a seal.

Abstract: The invention is a process for forming a hollow tubular member with an integral attachment end fitting.

Abstract: A method and apparatus for injection molding of ceramic suspensions is disclosed wherein an elastomeric bladder is disposed within a mold cavity of a mold. The elastomeric bladder, in a relaxed state, can be tubular or can be formed by bonding together sheets of material. A ceramic suspension is injected into the elastomeric bladder, whereby the elastomeric bladder is distended. Distention of the elastomeric bladder applies a significant force to the ceramic suspension for preventing jetting and formation of knit lines within the ceramic suspension. The ceramic suspension distends the elastomeric bladder until the mold cavity is filled. The ceramic suspension is then exposed to conditions sufficient to cause the injected ceramic suspension to form a molded ceramic greenware composite. The molded ceramic greenware composite can then be removed from the mold for drying and for debindering and densification to form a finished ceramic part.

Abstract: Reinforced composite tubes having integral tapered ends are formed on mandrels which are tapered at each end. Reinforcement fabric is first conformed to the mandrel with at least one end of the fabric structure retaining an opening therein. The mandrel is disassembled and removed through the opening, and a matrix cured within the fabric to produce the desired composite. Usually, the fabric structure will be cured in an external mold with an inflatable mandrel inserted through the opening applying internal pressure.

Abstract: A process for preparing high molecular weight water soluble polymer gels having relatively narrow molecular weight distributions is disclosed. An aqueous reaction mixture comprising a solution of a water soluble vinyl monomer and a suitable catalyst system is polymerized in a reactor comprising a tube or bag of an oxygen-impermeable film in the substantial absence of oxygen.

Abstract: In a process for covering an object by means of at least one flexible piece, a fluidized bed of particles (8) is covered by a flexible cloth (10), the flexible covering piece (12) is placed above said cloth, the object (13, 14) is placed above said cloth, pressure is applied to said object, deforming the flexible sheet and immersing the object in the fluidized bed until a mating imprint is formed in the latter. The covering can be effected by gluing, in particular with a previously applied heat-activated adhesive in which case the fluidized bed is obtained by means of a current of hot air at a temperature above the activation temperature of the adhesive. The process is particularly suitable for assembling and mounting seat covers. Also described is a device for implementing the process.

Abstract: A long fiber, thermoplastic frame for a tennis racquet or other implement is formed of fibers of carbon or other reinforcement material, which are oriented at desired angles, and which are intimately embedded in thermoplastic resin. A frame according to the invention is made by co-winding or commingling tows of carbon or other reinforcing fibers with filaments of thermoplastic material, or by preimpregnating fibers with a thermoplastic powder. The fibers, which are preferable formed into a braided sleeve for ease of handling, are disposed in a heated mold, and internally pressurized to conform to the mold and such that the thermoplastic melts and flows into intimate contact with the fiber material. A frame according to the invention possesses the strength and stiffness of a long fiber, thermoset frame, but unlike a thermoset frame has dynamic stiffness due to the visco-elastic properties of the thermoplastic resin.

Abstract: The present invention pertains to a method for producing a frame for a working hull, specifically an aircraft fuselage wherein at least a part of the frame is in the form of a monolithic structure. The method includes the steps of draping unidirectional and multidirectional fabrics impregnated with resin on a form, placing inflatable bladders between the form and a counter form, closing a mold on the form, inflatable bladders and a counter-form, inflating the bladders to compress the fabrics and heat-set the resin impregnating the fabrics. Thereafter, the monolithic structure is removed from the mold.

Abstract: A method of making generally hollow components and assemblies for a bicycle frame from composite materials, such as unidirectional structural fibers impregnated with a heat curable synthetic resin. Opposing parts of at least two adjacent wall sections are overlapped to form a shell and the overlapped parts are compressed together between internal and external pressing members. The shell is then cured while under compression to provide a pressure cured juncture integrally uniting the wall sections and forming a generally hollow bicycle frame component.

Abstract: A method of molding a hollow fan blade in which a preform (preferably constructed of glass fibers) is used to support the upper multiple layers of to-be-impregnated cloth within a mold. As resin is injected into the mold, the cloth and the preform become impregnated thereby bonding the two together to form a single unit during the molding operation.

Abstract: A method for resin transfer molding composite articles of complex configuration that have high fiber-to-resin ratios. The molding apparatus includes a compliant mold subassembly having one or more conformable cauls and a complementary, non-permeable membrane that function, in combination, as a semi-rigid molding tool. The compliant mold subassembly is relatively insensitive to bulk variations of layed-up fiber reinforcement material, facilitating fiber reinforcement material lay up and closure of the molding apparatus. The compliant mold subassembly provides uniform pressures during various molding stages, i.e., resin injection, expulsion of excess resin, curing, to enhance the homogeneity and dimensional stability of the finished composite article. The semi-rigid aspect of the compliant mold subassembly facilitates demolding of the finished composite article.

Abstract: A method and device for shaping tubular workpieces from thermoplastic placs is disclosed. In the method, the workpiece to be shaped is inserted into a mold, heat is applied from the interior of the workpiece to heat the workpiece to the softening temperature of the plastic, this temperature is maintained until the workpiece assumes the shape of the mold, and the workpiece is left in the mold until it has cooled off. A flexible heating core is used to apply heat to the interior of the workpiece. The heating core has an insulating jacket with a sliding layer on its outer wall and a heating conductor winding located within the insulating jacket. A stress relief extends lengthwise in the middle of the heating core and outward of the heating core at one end. A receptacle is provided at the other end of the heating core for the stress relief.

Abstract: A method of making a fiber-reinforced molded racquet frame includes placing at least one core having a tube with at least one layer of woven reinforcing fibers in a mold shaped to define the frame. A plastics material is injected into the mold around the core or cores. The plastics material preferably has a relatively low setting temperature and a relatively low viscosity.

Abstract: A reblow former for use in the manufacture of moulded construction products from dry particulate materials is proposed which includes an elongate body part (11) and an inflatable elastomeric sleeve (14) disposed about the body part, the body part having ribs (12) thereon to provide an indented transverse profile and the sleeve (14) having a transverse perimeter length which corresponds to that of the body part (11) and lying in intimate surface contact with the body part (11) in the non-inflated condition thereof. The transvere perimeter length of the sleeve (14) in the unstretched state thereof approximates to the transverse perimeter length of a core void (15) into which the reblow former is inserted such that, on inflation, the sleeve (14) is brought into contact with the core void surface of the core with not material stretching of the material of the sleeve.

Abstract: An apparatus used to form a three-dimensional composite structure is disclosed having an initially rigid heat-softenable layer of ABS plastic wherein uncured portions of the composite structure are first assembled between the layer of ABS plastic and a hard mold surface. Prior to curing of the composite structure, pressure and heat are applied to the ABS layer to soften the layer and thereafter compact the uncured portions of the structure against the hard mold surface. The ability to pre-shape the ABS layer allows stiffening beams to be incorporated into the structure so as to yield a lightweight, strong composite structure that can be used as a pressure vessel in an aerospace vehicle.

Abstract: A process for manufacturing a fiber reinforced tubular member having flanges at opposite ends thereof includes the steps of applying a winding including a plurality of fiber strands in an uncured curable matrix to a core element having a pair of spaced outwardly extending spreader elements thereon so as to form a central winding portion and a pair of conical winding portions on the core element; applying a forming tool to the winding between the spreader elements, the forming tool having a tubular inner surface, opposite outwardly extending end faces and transition edges therebetween; applying resilient outward pressure to the winding so as to urge the winding against the forming tool along the transition edges; uniformly applying the fiber from the conical portions of the winding to the end faces of the forming too; and curing the matrix.

Abstract: An isostatic pressurizing bag for consolidating a composite part has an outer flexible elastomer having a fixed resilient outside surface. The outer elastomer surrounds a closed chamber. A thermally expandable inner elastomer is located in the closed chamber. The inner elastomer is selected as an elastomer that can viscously flow or move in response to pressure. The outer elastomer is capable of flexure to relieve expansion of the inner elastomer. The bag is formed by curing plies of uncured silicone rubber around either a silicone gel or a particulated silicone rubber that is capable of phase change to a flowable gel in response to pressure. In use a composite prepreg is overlaid on a surface that defines the shape of a desired part. The isostatic pressurizing bag is located over the prepreg trapping the prepreg between the pressurizing bag and the surface.

Abstract: For forming a resin-impregnated, fiber reinforced composite material sheet having laminated meshes of fibers into a U-shaped cross section, the sheet is placed onto a stationary forming die and an auxiliary forming die with the fibers of the sheet forming angles of approximately 45.degree. relative to opposite edges of an upper reference forming surface of the stationary die. Then, the sheet is pressed from above by a pneumatically expandable, elastic depressing die, whereby the auxiliary forming die is lowered against a resilient force relative to the stationary forming die. As the sheet is pressed further downwardly by the depressing die, the parts of the sheet which are to form flanges of the product are firmly held between the depressing die and the auxiliary forming die and bent downwards while the parts are subjected to extending forces in directions to prevent creases and lines from being formed by means of auxiliary forming ridges on the auxiliary forming die.

Abstract: Cavities, such as manholes of differing sizes and shapes are repaired by an apparaatus that includes an inflatable bladder enveloped by a carrier formed of a resin-impregnated fiberglass fabric. A hoist lowers the bladder and fabric into the manhole and an air blower inflates the bladder until the fabric tightly overlies the inner walls of the manhole. The resin then cures in situ. The liner so created forms a monolithic whole that is impervious to water and silt and prevents further crumbling and deterioration of the inner surfaces of the manhole. The bladder is deflated and retracted after the resin in the fabric has cured.

Abstract: A process and resulting structure providing a utility vault with a foam-filled tube sealing the space between the vault walls and the vault cover. Preferably the tube includes an inner tube that is sufficiently porous to permit gas to flow therethrough but only a small amount of uncured foam to flow therethrough, and a plastic outer tube that prevents the foam from bonding to the vault structure.

Abstract: An apparatus and method are described for the formation of a three dimensional composite article by use of a flexible male mold placeable within a cavity formed within a rigid female mold. Fibers are initially bound to the surface of the flexible male mold and the mold is thereafter placed inside the female mold cavity. The surface of the flexible male mold is thereafter displaced away from the female mold by the injection of hardenable resin between the molds. The flexible surface is thereafter returned to near its original position adjacent the female mold. The flexible mold includes a chamber defined therein capable of pressurization and depressurization during the fabrication process of the composite article.

Abstract: The present invention consists of a collapsible hollow core, having a circumferentially variable wall thickness, for use in a method of forming a hollow article. The core is manufactured by extruding a hollow parison into an open core forming mould, closing this mould, expanding the parison against the inner walls of the core forming mould by injecting pressure into the parison, and opening the mould to remove the core. The core thus formed is used in a method of forming a hollow article of a resin reinforced with fibers. The method consists of winding reinforcing fibers tightly around a hollow core having a circumferentially variable wall thickness and placing the wound core in a mould. A differential pressure is then provided between the interior and exterior of the core to cause a thinner wall portion thereof to initiate collapse of the core, and this collapse is continued to an extent necessary to relax the fibers.

Abstract: An essentially seamless bicycle frame of fiber reinforced, resin impregnated composite material and a method by which it is produced to have a top tube portion, hollow down tube portion, a seat tube portion, a head tube corner at which the top tube portion meets the down tube portion and a head tube insert is incorporated, a bottom bracket corner at which the down tube portion meets the seat tube portion and a bottom bracket insert is incorporated, and a seat tube corner at which the top tube portion meets the seat tube portion and a seat tube insert is incorporated by molding and curing of tubular preforms that were produced by rolling or wrapping layers of resin impregnated fiber material on a mandrel, each preform having been removed from the mandrel on which it was formed in an uncured tubular form. Additionally, connector tube section preforms, which are integrated into the corners, are also formed in this manner.

Abstract: An essentially seamless bicycle frame of fiber reinforced, resin impregnated composite material and a method by which it is produced to have a top tube portion, hollow down tube portion, a seat tube portion, a head tube corner at which the top tube portion meets the down tube portion and a head tube insert is incorporated, a bottom bracket corner at which the down tube portion meets the seat tube portion and a bottom bracket insert is incorporated, and a seat tube corner at which the top tube portion meets the seat tube portion and a seat tube insert is incorporated by molding and curing of tubular preforms that were produced by rolling or wrapping layers of resin impregnated fiber material on a mandrel, each preform having been removed from the mandrel on which it was formed in an uncured tubular form. For purposes of forming the corners, at least two integral flap portions are produced, on at least one end of at least one of the preforms to be joined, by axially slitting it.

Abstract: An elastomer-coated fabric for use as a confinement. The confinement is formed by conforming a fabric to a mold having the shape of the desired confinement, and subsequently applying a layer of elastomer to the fabric. A curing operation then cures the elastomer such that the elastomer-coated fabric retains the shape of the mold. Advantageously, the curing operation also relaxes and heat sets the fabric in order to permit a controlled amount of further stretch, even if the fabric was stretched a maximum amount when it was conformed to the mold.

Abstract: A process and equipment for making seamless composite tubes. Composite material is applied on a mandrel which includes an inflatable bladder and inserted in a single piece mold. The bladder is pressurized for pressing the composite material against the mold wall for molding and curing thereof. In order to prevent seizing of the tube by the mold and thus allow easy removal of the cured tube, the mold is composed of a composite of resin impregnated carbon fiber material wherein the carbon fiber material has a negative coefficient of thermal expansion along the length thereof and is oriented at an angle of between about 15 and 40 degrees relative to a radial plane of the mold. In order to eliminate the use of inefficient and inconvenient cure ovens, a heat generating element is disposed internally of the mandrel for curing of the composite material.

Abstract: Method for press vulcanizing, not only of dry, wholly or partly vulcanizable articles (1), such as auto rubber mats, piled rubber mats, etc., of a humidity of 0-3 weight percent but also of such articles (1) of a humidity of 3-5 weight percent or more, in the press zone of a vulcanizing press (P) having a shiftable part for closing and opening of the press (P) capable of applying a uniform surface pressure against any article (1) fed into the press. In that at least from the beginning of the vulcanizing operation to the end of it, a multitude of flow routes is established between the press shiftable part and each article (1) for vapors and gases released from each article (1), and a multitude of flow routes out from the press zone from where said vapors and gases may thus escape at least along part of the border of said press zone border, a method is brought about in which no vulcanizing heat is lost for heating of confined vapors and gases at high pressures.

Abstract: A method of preparing window glass provided with a gasket at a peripheral portion of a glass sheet for a window includes placing a glass sheet in a shaping mold which has two mold parts to provide an inner cavity in which resilient sealing members are attached respectively to the two mold parts so as to come in contact with surfaces of the glass sheet so that a gasket forming cavity is formed at a peripheral area of the glass sheet by the cooperation of the inner cavity of the shaping mold, the resilient sealing members and the glass sheet. The resilient sealing member is then pushed to the contacting surface constituted by the resilient sealing member and a part of the shaping mold in the inner cavity via a pushing means after the assembling of the shaping mold and the glass sheet. A gasket material is then injected into the gasket forming cavity to form a gasket.

Abstract: An air bag restraint system for protecting vehicle occupants during a collision comprising a seamless inflatable confinement of braided fabric constructed by strands of multiple fibers which are interlocked by diagonally crossing a number of these strands alternately over and under one or more of the other strands. The seamless air bag is formed by braiding textile yarns to a mold having the shape of the desired confinement. An elastomer coating may be applied to render the braided fabric either essentially non-porous and non-permeable to air or semi-permeable to control air flow. Also, methods for manufacturing such seamless braided fabric confinements.

Abstract: The process makes use of a lost core of polystyrene, on which are wrapped and compacted, in successive stages, various sheets or mats of carbon fibre, of known type; a first compaction is effected in an autoclave after having sealingly wrapped the core, before lamination of the carbon fibre layers, in a first polythene envelope, and after having sealingly wrapped the partly finished product constituted by the core wrapped in the first polythene envelope and some of the carbon fibre sheet or mat in a second polythene envelope, by creation of a vacuum within the interior of the second envelope, while maintaining the interior of the first envelope in communication with the outside of the second envelope; a second compaction, after removal of the second envelope, following lamination of further sheets or mats and possible mounting of metal inserts on the core and insertion of the partly finished product thus obtained between a pair of mould halves, is effected in an autoclave by wrapping the two mould halves, pre

Abstract: An apparatus for manufacturing an otoplastic. An otoplastic is manufactured directly in the ear of a hearing-impaired person in that a deformable envelope is pulled over a die or over a shell or over an overlayed over-shell. This apparatus is then supplied with flowing otoplastic material between the die and the envelope, being supplied therewith in the ear. The envelope expands and assumes the shape of the auditory canal. After hardening or curing of the otoplastic material in the ear of the hearing-impaired person, the envelope and the die are removed and a module of either an in-the-ear or of a behind-the-ear hearing aid is integrated therewith.

Abstract: A hollow fiber reinforced part, especially body closures for vehicles, is made by applying preforms to a hollow, thin-walled support which has been preshaped to the general configuration of the body closure. The support is then depressurized and the support/preform subassembly placed into a mold. The mold is closed and the support again pressurized. Then, resin is injected into the mold to impregnate the fibrous pieces of the preforms. Once the resin cures, the mold is opened and the part removed.