Abstract: Tooling for facing a wall includes a plurality of cavities which are formed by four blades, each of the cavities corresponding to various brick sizes. Six lines of interconnected cavities are attached to a cross beam. Adjacent cavities and lines are spaced from another by a predetermined dimension. Unset settable building material is mixed with appropriate coloring and waterproofing agent and is applied to a wall to form an outer layer. The surface thereof is sponged to produce a brick like surface relief. The tooling is pressed into the outer layer to impress a pattern resembling brickwork. Unset material is sucked from the joint line space between adjacent cavities and the layer is allowed to set. Then, mortar is added to the joint line. Once the mortar has set, the final outer layer has a true brick finish that resembles a real brick wall. The unset settable material can be applied to damaged or wood walls so that a true brick finish can be given to a wall in a quick, simple and cost effective manner.

Abstract: In a method for manufacturing fibre-reinforced structures with a glass matrix, there is used for the glass matrix an SiO.sub.2 colloid dispersed in water as glass former, with which the fibres are impregnated, and the impregnated fibres are heated in the final form of the structure to the sintering temperature of the SiO.sub.2 colloid.

Abstract: A light-weight cover or shield, having the appearance of, and contour of, a human limb, adapted/designed to surround the endoskeletal component of a prosthesis, is provided by heating and deforming a preform composed of a closed cell polyethylene sheet material of specified thickness, to yield said contoured cover/shield of extremely light weight and being toolable for tailor finishing to individual requirements.

Abstract: A device for repairing laminated glass by inserting a liquid, curable resin into the fracture in the glass. An absorbent material is attached to the bottom of a suction cup. When it is desired to commence a repair, several drops of the resin are placed in the absorbent material. The suction cup is then positioned over the fracture such that the absorbent material is aligned with the center of the damage. Then the center of the suction cup is depressed toward the glass until resin flows from the absorbent material. To expedite the repair process, the vacuum between the suction cup and the glass may be intensified by pulling the center of the suction cup farther from the glass without detaching the edge of the suction cup; the center is maintained at this distant location for several seconds before being returned to its original position; and the pulling and returning is repeated several times. This process may be facilitated by attaching a handle to the top of the suction cup.

Abstract: A bend portion of a bonded, laminated article is made substantially free of wrinkling, which results in interlaminar voids and discontinuities, by applying tension to at least one layer of a radially outer portion of a preform of the article during bonding, the tension being applied in a direction away from the bend, typically generally tangentially in respect to an inner portion. The apparatus includes a rigid support to carry the preform bend portion, held to the support to enable application of force or pressure to the outer layer.

Abstract: A vacuum sizing apparatus with a controlled vacuum is provided. The vacuum is precisely controlled by the use of a variable speed motor driven vacuum pump and a step motor controlled vent valve. An electrical circuit containing a microprocessor coordinates the speed of the motor driven vacuum pump with the position of the vent valve to give precise vacuum control within the vacuum chambers of the sizing apparatus. A closed sump tank contains water for the water system of the apparatus and is maintained at the same vacuum level as the vacuum chambers within the sizing apparatus.

Abstract: A ribbon adhering apparatus for a photographic film cassette has a turntable, which has holders fixed circumferentially at a regular pitch. Slidable supporters are mounted on the turntable in correspondence to the respective holders, at positions inward therefrom. Initially in rotation of the turntable, a cassette half of a film cassette is set on an empty holder. Ribbon web is lapped on to support surfaces of supporters arranged adjacently. The web is cut between the supporters to separate ribbons. Sucked and held on the supporter, the ribbon is then heated to activate hot-melt adhesive agent. By advancing the supporter to a holder corresponding thereto, the ribbon is pressed against the cassette half via the adhesive agent. The supporter then stops holding the ribbon. After cooling the adhesive agent, the supporter is withdrawn from the holder, from which the cassette half is removed.

Abstract: A method for vacuum molding of large objects in a dismountable mold. The method includes the steps of introducing a monomer and a hardening agent to a cavity within a mold, with the cavity being under a vacuum. The monomer and hardening agent are introduced at least at one position in the cavity. The position being situated initially in the lower portion of the cavity. The position is successively moved upward at such a speed that the position is located just below the surface of the monomer and hardening agent as they are introduced into the cavity and their level rises within the cavity.

Abstract: An isotropic, biaxially stretched polyimide film prepared by casting a solution of a polyamic acid precursor in an organic solvent containing a cyclization catalyst and dehydrating agent onto the surface of a support, imidizing the polyamic acid to give a continuous self-supporting gel film containing 5-50% by weight of solids, stretching the gel film in the machine direction (MD) at a ratio of 1.1-1.9, and stretching in the transverse direction (TD) with respect to the machine direction so as to maintain a TD/MD stretch ratio of from 0.9 to 1.3.

Abstract: A disposable self contained cartridge for resin transfer molding including a sealable flexible-walled vacuum bag surrounding fibrous reinforcing material to be impregnated and formed and a quantity of resin for impregnating the fibrous reinforcing material, and vacuum port to collapse the vacuum bag about the fibrous reinforcing material and the resin.

Abstract: An unitary vacuum bag for forming of a fiber reinforced composite article, made of a curable elastomer, having molded in resin distribution means formed to the specific article to be made. Optional vacuum conduits are molded into the periphery of the bag, causing the bag to be adapted to any number of mold shapes. The vacuum bag is constructed upon that mold which forms the base for the construction of the desired fiber reinforced composite article. The bag contains an open sided, resilient main distribution conduit running laterally along the long axes of the vacuum bag with branch conduits, depending upon the shape of the mold, to provide for long distance flow of resin to all parts of the composite article. A multiplicity of cross channels are formed on the inner surface of the bag, covering most of the area under which the fiber lay up is placed within the mold.

Abstract: An apparatus for continuous vacuum forming of a hot plasticized material such as vinyl onto a moving flat forming surface defined between a first and second roller member which are continuously rotatable with a flexibly resilient belt and a woven flexible support belt extending therearound. The upper belt is of a flexibly rubber material and the lower belt is of an open woven metallic material to allow air to be drawn therethrough. These belts pass through a flat forming station positioned between two rollers against which vacuum forming is performed. A flexibly resilient pattern form is defined on the flexibly resilient belt including a plurality of vacuum apertures therein such that as the pattern form passes through the flat forming station a vacuum is applied through the woven support belt and to the apertures defined in the form to draw down the hot plasticized material onto the pattern form for continuous vacuum forming.

Abstract: A method for manufacturing a reinforced cementitious structural member having a predetermined shape and size includes providing a mold having a cavity which corresponds to the shape and size of the member, placing at last one permeable fibrous mat into the cavity, introducing a slurry of cementitious material into the cavity so that the slurry of cementitious material fills the cavity and infiltrates and encapsulates the fibrous mat, curing the reinforced cementitious material, and separating the cured reinforced cementitious structural member from the mold.

Abstract: A method of producing a substantially finished surface on the outmold side of a thermosetting casting. The method entails preparing a first laminae having a curable thermosetting resin material as a first outmold surface, and providing a second laminae having an imprinted surface thereon. The first surface and second laminae having an imprinted surface are then positioned in face-to-face registration with one another. Substantial vacuum conditions are generated in the area between the first surface and the imprint surface, and the surfaces are pressed together under substantial vacuum conditions. The vacuum and pressure conditions maintain the surfaces in face-to-face registration and contain any volatile components of the curable thermosetting resin material of the first laminae while the curable thermosetting resin material cures.

Abstract: The invention concerns a cooling plug for sizing the interior surface of thermoplastic extruded pipe. Vacuum and/or pneumatic pressure is applied at the surface of the plug. The pneumatic pressure may cause the inner wall to balloon outwardly to form bells within a mold or within an outer wall, to fit into corrugations of an outer corrugated tube, etc. The vacuum may be used to pull the inner wall back to the surface of the plug after application of pneumatic pressure.

Abstract: Apparatus and method for treating the interior surfaces of hollow plastic objects to improve their adherency to and compatibility with another component, such as polyurethane foam. The invention consists of creating a vacuum in the object and drawing a conductive gas inside the object. A pair of electrodes are spaced apart from each other, and a source of electricity is provided thereto of sufficient intensity to produce an electrical discharge across the gap between the electrodes when an object is in the gap between the electrodes. The electrodes are arranged with regard to the size and configuration of the object to provide ionization of the conductive gas inside the object to surface treat the inner walls.

Abstract: A process for producing a resin molding having a concave-convex pattern on the surface includes the steps of providing an original die having a concave-convex pattern on the surface and a substrate having a flat surface, thereby counterposing the concave-convex pattern surface and the flat surface to each other through a spacer and forming a cell with a cavity formed by the original die, the substrate and the spacer; making an internal pressure of the cell cavity lower than an external pressure thereof, thereby filling at least one of a liquid polymerizable component and a liquid resin into the cavity due to a pressure difference between the external pressure and the internal pressure; curing at least one of the polymerizable component and the liquid resin in the cavity, thereby making a replica; and peeling the original die from the replica, thereby obtaining a resin molding.

Abstract: Process for vacuum impregnation of a dry fiber reinforcement with a curable resin to produce a resin-fiber composite, by drawing a vacuum to permit flow of curable liquid resin into and through a fiber reinforcement to impregnate same and curing the resin-impregnated fiber reinforcement at a sufficient temperature and pressure to effect final curing. Both vacuum and positive pressure, e.g. autoclave pressure, are applied to the dry fiber reinforcement prior to application of heat and prior to any resin flow to compact the dry fiber reinforcement, and produce a resin-fiber composite of reduced weight, thickness and resin content, and improved mechanical properties. Preferably both a vacuum and positive pressure, e.g. autoclave pressure, are also applied during final curing.

Abstract: A method of manufacturing a protective sheath made of laminated material based on fibers impregnated with resin, the method making use of a cylindrical draping mandrel, wherein:at least two longitudinal elements are provided on the mandrel to project from the periphery thereof, which elements are disposed substantially along diametrically opposite generator lines of the mandrel, dividing the mandrel into two longitudinal semicylindrical portions;a first sheet of flexible laminated material is placed on one of the semicylindrical portions of the mandrel, with the longitudinal margins of the sheet overlying the longitudinal elements;a second sheet of flexible laminated material is placed on the other semicylindrical portion, with the longitudinal margins thereof overlying the longitudinal margins of the first sheet and the projecting longitudinal elements;the first and second sheets are pressed against the outside surfaces of the semicylindrical portions by means of a pressure difference;both sheets are hardene

Abstract: The invention provides a method of making an elastomeric mandrel for use in formation of parts from composite materials. The method of making includes providing a separable mold with an interior chamber shaped to provide a desired exterior mandrel size and shape; applying uncured elastomeric material to surfaces of the interior chamber of separated parts of the mold; joining the elastomeric material by assembling the mold parts prior to cure such that the material joins at seams and allowing the elastomeric material to cure into a shape of the desired flexible mandrel. The mandrel is provided with a fill opening such that it is fillable with a particulate solid media and evacuable to compact the media.

Abstract: A light weight formed body used for building materials, heat-insulating materials, furnitures, backing materials and the like, and a method for producing the same. In the light weight formed body and in the manufacturing method thereof, the principal material is a surface-reformed slag of which the reforming involves reforming through the dissolution reaction and the hydration reaction of glass and the reforming through dehydration of the surface-reformed slag above mentioned under heating, and one or more of a polymer dispersion, a reinforcing fiber, a coagulant, a light weight aggregate, a thickener, a dispersing agent, a pigment, a synthetic pulp, a needle- to fiber-shaped calcium silicate hydrate and a hydraulic gypsum are further used together with the above principal material.

Abstract: A fiberglass molding method characterized by the use of a male mask to which glass fiber material is affixed and then sealed against a female mold by a vacuum actuated gasket system. Resin is placed into the bottom of the female mold and is pulled by vacuum through the glass fiber material by means of vacuum ports which extend through the bottom of a spillway and open at an elevation above the bottom of the spillway. The method also allows the resulting fiberglass part to be subsequently surfaced coated using the vacuum method.

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 vacuum molding process uses a flexible molding skin having an imprint face arranged inside an airtight compartment. Before the vacuum is made, a pasty plastic material is incorporated in the compartment facing the imprint The vacuum is then made in the compartment to press the flexible molding skin onto the plastic material with formation of a molded surface with sculptures and asperities giving a decorative or functional granular appearance. The molding skin is made of a flexible anti-adhesive organic material, notably silicone, for ease of removal from the mold after the plastic material has hardened Shaping of the panel is performed after the vacuum bag has been positioned on a shaping part. The process is used for manufacturing artificial climbing wall panels.

Abstract: A method of producing a plasma treated article in a mold tool having electrically isolated mold dies including the steps of placing an article to be treated with a plasma between at least one of the dies and the article to be treated and applying an electric field between the dies to create a plasma in the space.

Abstract: This invention relates to a process for preparing thermoplastic composites .e. laminates from a plurality of individual plies of thermoplastic resin prepregs. The prepregs are formed into composites under two substantially concentric vacuum chambers. High temperatures and low consolidating pressures are applied against the prepregs in an inner vacuum chamber while a lower vacuum is drawn from the rigid outer chamber to remove the volatiles and consolidate the prepregs.

Abstract: A process for the high speed production of fiber reinforced plastic moldings forms several preforms which are solidified with chopped fibers, resin powders and a binder and are held between two preheating plates. Each plate is formed of a thin metal plate and will preheat the preforms to a temperature higher than the melting point of the resin. While the preforms are held between the preheating plates, the preforms are cold-pressed in a mold maintained at a temperature lower than the melting point of the resin for simultaneous impregnation and cooling of the resin. In addition, a preforming mold is placed in a vacuum chamber and precut chopped fibers are positioned in a tank. The preforming mold is placed into the tank and an exhauster is actuated to vacuumize both the vacuum chamber and the preforming mold, thereby adsorbing the chopped fibers in the tank onto the preforming mold and forming on the surface of the preforming mold an unsolidified preform comprising the chopped fibers.

Abstract: An apparatus for and a method of manufacturing a fiber reinforced thermoplastic sheet-shaped molding including a pre-impregnating process and a final impregnating process. A sheet of thermoplastic resin and a web of reinforcement fibers are supplied through the pre-impregnating process during which the thermoplastic resin is sucked under the influence of a suction force so as to partially penetrate into interstices in the reinforcement fiber web while both are transported around and by a perforated rotary drum, thereby to form a first preformed sheet. The first preformed sheet is subsequently supplied to the final impregnating process during which an impregnating machine is employed. As the first preformed sheet is passed through the impregnating machine while compressed inwardly and heated, the thermoplastic resin is allowed to completely penetrate into the interstices in the reinforcement fiber web to complete the fiber reinforced thermoplastic sheet-shaped molding upon cooling thereof.

Abstract: Cold-stretchable sheet material is isostatically formed at an operating temperature beneath the softening temperature of the sheet material by means of a fluid pressure medium at a pressure of more than 20 bars so as to produce a deep-drawn formed plastics piece. Forming may take place abruptly. The sheet to be formed may be provided with a coating such as an ink imprint. The resulting thin-walled deep-drawn piece may be backed and reinforced by injecting further plastics material.

Abstract: A process for preparing a composite product from an intake material incorporating commercial, municipal or industrial waste containing organic, plastic and fibrous material includes first granulating and sizing the material. The material is then heated in three consecutive phases, first at a temperature sufficient to achieve an internal temperature within the material of about 215.degree. to 250.degree. F., then at a temperature sufficient to achieve an internal temperature within the material of about 250.degree. to 320.degree. F. and then at a temperature sufficient to achieve an internal temperature within the material of about 320.degree. to 400.degree. F., wherein said material is continuously mixed during said heat phases. The material may then be co-extruded with a reinforcement structure and forced into vacuum profile dies to form a product or compression molded to form a product and cooled.

Abstract: A method of and for forming blisters in which a web material including a thermoplastic resin that is supplied to a rotary forming drum is heated and deformed by heat in accordance with the configuration of cavities provided on the rotary forming drum. A predetermined tension is applied to the web material while feeding it. When the rotary forming drum consists of a polygonal drum, each peripheral surface of the drum is formed as a curved surface extending along an arc whose radius is larger than that of the circumscribed circle of the polygon. This invention can be used in a packing device for foods, drugs, etc.

Abstract: A resin encapsulating structure includes a substrate having a first region and a second region which surrounds the first region, first pads provided on the substrate in an outer periphery of the second region, an integrated circuit chip which is mounted on the substrate within the first region, second pads provided on the integrated circuit chip, interconnections formed across the first and second pads above the second region, and a resin which is formed on the substrate and covers the integrated circuit chip and the interconnections. The substrate includes one or a plurality of holes which penetrate the substrate and are located within the second region, and the holes provide an escape path for air cells which are generated in the resin particularly when the resin flows between the interconnections.

Abstract: Polyester sheets are produced by melting a low-viscosity polyester such as a recovered polyester under reduced pressure, extruding the melt into a sheet, and stretching the sheet in the direction of width by 2.5 to 120%. The polyester resin of the oriented sheet thus obtained has an intrinsic viscosity of 0.40 to 0.63. Polyester sheets can be produced readily and continuously from recovered polyester resins or polyester resins below standards, which have a low intrinsic viscosity, and the cost of production of polyester sheets is reduced. These sheets can be formed into various shaped articles by vacuum forming, pressure forming or the like without occurrence of draw-down and without giving defective shaped articles.

Abstract: In a method and apparatus for the production of thermoplastic, caprolactam containing molding compositions by hydrolytic polymerization of caprolactam in stirrer autoclaves in which a molten mass is polymerized at pressures of 5 to 20 bar and temperatures of 220.degree. to 280.degree. C., the molten mass is transferred into an intermediate vessel to which vacuum is applied for continued polymerization and removal of volatile portions. Subsequently, the mass is continuously fed into a multi-screw extruder, in order to attain at increased temperatures and vacuum the desired polymerization degree and the desired monomer and oligomer contents. In a subsequent zone of the extruder, when desired, additional agents are worked in, whereafter a further degasification occurs in the end zone of the extruder, whereafter the mass is extruded, quenched, subdivided and dried. The method and apparatus use relatively little energy as compared with the prior art.

Abstract: An extrusion and calendering method is provided to produce a plastic panel, in particular for the lining of concrete containers, having strongly undercut anchoring elements. These protrusions preferably include flat-shaped wings which are arranged approximately V-shaped, forming an angle with and being offset in their width from each other. The leading wing upon the manufacturing process has a smaller angle to the normal through the panel base. The wings may also, differing from the rectangular cross sectional shape described, have a round, oval, elliptical or square cross section.

Abstract: A mold and method for forming a balloon for dilatation catheters, particularly balloons with a prismlike shape with a transverse polygonal cross section when the internal pressure is at atmospheric conditions. Upon inflation to higher internal pressures, the balloon assumes a normal circular cross section. The balloon shape is particularly suitable for balloons formed of polyethylene terephthalate and the like which are not readily heat settable. Reduced deflated profiles are obtained. The mold is formed by first making a preformed core member which has the shape and dimensions which are desired for the balloon. A heat-formable tubular member, preferably formed of borosilicate glass such as PYREX, is disposed about the core member, subjected to heat and an internal vacuum so as to be shaped onto the exterior of the core member.

Abstract: A method for supporting a piece which is to undergo a treatment process including embedding the piece in a particulate support medium, enclosing the support medium in a container, and pressurizing the support medium by applying pressure to the outside of the container or by applying a vacuum to the interior of the container. Various treatment processes may be employed, such as annealing.

Abstract: A method for supporting a piece which is to undergo a treatment process including embedding the piece in a particulate support medium, enclosing the support medium in a container, and pressurizing the support medium by applying pressure to the outside of the container or by applying a vacuum to the interior of the container. Various treatment processes may be employed, such as annealing.

Abstract: Apparatus for stabilizing and reducing neck-in and edge thickness of a hot-plastic web including a pair of nozzle assemblies located at spaced edges of the web. Each nozzle assembly includes a pair of elongated nozzle elements which direct a pair of gaseous flows along opposed sides of the web transverse to the direction of movement of the web and toward an edge thereof.

Abstract: A curved composite material body is consolidated to a complexly curved shape by placing rigid tooling on the concave-facing side of the body, and a pressure membrane on the other (convex-facing) side of the body. In another region of the body where the sign of the curvature of the body changes so that the other side becomes the concave-facing side, the rigid tooling is placed on that side, against the concave-facing side, and the pressure membrane is contacted to the convex-facing side. The rigid tooling thus crosses over from one side to the other through various regions of the body, providing a precise consolidation to meet the structural and dimensional specifications. Consolidation is achieved by applying pressure to the body of composite material through the pressure membranes.

Abstract: A process for producing a cylindrical reinforcing fibrous molding by sealing openings at opposite ends of a porous cylindrical disintegratable mold, immersing the mold into an aqueous solution of a molding material containing reinforcing fibers and an inorganic binder, and depositing the molding material onto the outer peripheral surface of the mold by applying suction within the mold to form a molding blank; pressing the molding blank against the mold to adjust the shape of the molding blank; disintegrating the mold to remove it from the blank; and heating the molding blank to partially bond the reinforcing fibers with the inorganic binder.

Abstract: A process for producing a printed circuit board includes steps, sequentially conducted of dispersing in water or organic solvent:(A) 95 to 20% by weight of a styrene polymer having a syndiotactic structure, (B) 5 to 80% by weight of a fibrous filler having a fiber length of 1 to 50 mm, and (C) 0.1 to 30 parts by weight of at least one of a binder and a binding fiber in proportion to 100 parts by weight of the total amount of the components (A) and (B), to make a slurry having a concentration of 0.5 to 100 g/l; separating the solids from the slurry and drying and molding them. Thereafter the solids are either subjected to melting with heating and pressure forming into the molded article, or they are impregnated with a thermoplastic resin which is then cured. Finally, a metal layer is provided on the molded article.

Abstract: A vacuum forming process, and an apparatus for carrying out the same, for imparting a predetermined shape to a sheet material. The process includes the steps of placing a thermally softened sheet material onto a molding surface of a mold and evacuating air remaining between the molding surface of the mold and the sheet material, thereby bringing the sheet material into a close contact with the molding surface of the surface of the mold. The vacuum forming process and apparatus is adapted for giving a predetermined shape to a sheet material having a low elongation ratio.

Abstract: Process for producing an atmosphere for the manufacture of high performance composite parts, of the type wherein the atmosphere is used in an autoclave above a superposition of cutouts with fibrous structure impregnated with a thermosetting organic material disposed between a lower mold and an upper sealing covering member, the space between the covering member and the mold being under vacuum. The atmosphere is nitrogen gas prepared from raw nitrogen by separation from air through permeation or adsorption, incorporating a residual content of oxygen between 0.5% and 6%, with a low content of water vapor. Application for example to the manufacture of secondary and primary structures in aeronautical and space construction.

Abstract: A method and apparatus for moulding a fluid settable material. The apparatus includes male and female mould halves defining between them a mould cavity having an inlet thereto for the introduction of a fluid settable material; between the male and female mould halves of the cavity a seal can be interposed to seal the mould cavity from the atmosphere. At least one vacuum outlet from a mould half leads via an isolation valve to a vacuum source.

Abstract: As an article of manufacture, an ovenable shaped article formed of polyethylene terephthalate having a degree of crystallinity of at least 20%, said crystallinity being substantially uniform over the whole of the shaped article, and a process and apparatus for making same.

Abstract: A process for forming plastic tubing which involves extruding a molten plastic composition through a die which produces an extended length of plastic tubing, passing the hot tubing through a vacuum sizing tube wherein the wall of the tubing is sized by being drawn to the wall of the sizing tube by a vacuum, and cooling the sized tubing so that the tubing will be self-supporting at normal ambient temperatures, wherein the plastic composition contains a phosphorus-containing additive in an amount sufficient to cause an improvement in the smoothness of the interior of said tubing.

Abstract: A spring consisting of a rope having a plurality of strands each containing a plurality of monofilaments, and a cured binder which has saturated the rope under pressure to cause it to be self-sustaining in spring form. A method of fabricating a spring including the steps of providing a conventional rope composed of a plurality of monofilaments, saturating the rope under pressure with a binder to form a combined rope and binder, forming the combined rope and binder into a predetermined spring shape, and curing the binder to cause the spring to be self-sustaining in the formed predetermined spring shape. A self-damping spring formed by the foregoing method wherein the rope is of the twisted type, and the amount of damping being dependent on the angularity of the twisting. A spring consisting of a first portion of a rope impregnated with binder to hold the spring in a self-sustaining shape and an untreated second rope portion formed integrally with the first portion.

Abstract: A method of manufacturing a large-sized, thin-walled object of fiber reinforced synthetic resin, using inner and outer mold parts, which bound a mold cavity. A reduced pressure is created in the cavity by means of at least one vent in one of the two mold parts communicating with a vacuum source. A hardenable resin is supplied to the cavity via one or more openings in at least one of the two mold parts. The inner mold part is form retaining. A first reinforcement fiber layer is applied to the inner mold part, and then at least one foam core extending in a longitudinal direcetion and having at least one supply duct provided in it is placed on the first reinforcement layer. A second reinforcement layer is placed over the foam core, followed by applying to the second layer foam strips in which a passageway is provided. The whole arrangement is then covered with a flexible outer mold part at whose circumference a plurality of vents are provided for communication with a vacuum source.

Abstract: The invention concerns a coated-core press for making coated tablets. In prior art coated-core presses, the problem arises of centering the cores exactly in the powder undercoating in the matrix, particularly when the matrix table is rotating at high speed. In order to solve this problem, a device for picking up and transferring the cores (9) is arranged on the lower side of the vertically adjustable core die (31) and comprises gripping devices which pick up the cores in the pick-up station (60) and press them into the center of the underlayer of powder material formed inside the corresponding matrix (3).