Abstract: Provided is a method of manufacturing a cylindrically shaped article, wherein a thermoplastic layer is formed on the surface of the cylindrically shaped article precisely and at low cost. To achieve this, the outer peripheral surface of a cylindrically shaped article supported on a columnar member is coated with particles of a thermoplastic resin, a tubular molding member is fitted on the cylindrically shaped article coated with a film of the particles of thermoplastic resin, and at least the columnar member is then heated to calcine the thermoplastic resin film.

Abstract: A substrate structure for manufacturing series interconnected photovoltaic cells comprises repetitive sheets of electrically conductive polymer resin joined by first narrow strips of insulating material. A second narrow dividing strip of insulating material is positioned on the top surface of each electrically conductive sheet extending essentially parallel with but slightly displaced from the joining strips. The second strip divides the top surface of each conductive sheet into a connector area and a collector area. The connector area is positioned between the first and second insulating strips. After deposition of a thin film photovoltaic cell onto the collector area, series interconnection is made by establishing electrical communication between the top surface of the photovoltaic film and the connector area of an adjacent sheet. Electrodeposits on surface portions of the electrically conductive sheets assist in current distribution with minimum power losses.

Abstract: An improved manufacturing process is provided for surface protective striking tools such as hammers and mallets. An elongate hollow core is fitted with impact heads at opposite ends thereof and filled with a flowable filler material such as small steel pellets prior to placement of the core into a mold cavity for injection mold formation of an outer encasement. During the molding step, the filler material provides a substantially rigid structural backstop which enables a core of lightweight construction to withstand typical injection molding parameters. The molded outer encasement ensheathes a skirt portion of the impact heads and any exposed portion of the core member to bind the impact heads to the core member. The molded outer encasement does not extend over an impact face of each impact head. A handle may also be molded with the outer encasement. A striking tool thus formed is removed from the mold, and some or all of the filler material is drained from the core through an open port.

Abstract: A carburetor float (10) having a body portion (12) with at least one divider wall (26, 27) formed therein, a lid (4) for closing off the top of the body portion and for sealing the interior chamber of the body portion and for sealing the cells (30, 31, 32) within the body portion from each other, and a mounting bracket (36) extending from an upper edge of one side of the body portion of the carburetor float for receiving a spring clip (16) that controls the inlet valve to the float bowl of the carburetor.

Abstract: A method of forming a laminated piezoelectric structure is disclosed wherein a plurality of polarized piezoelectric films of vinylidene fluoride and trifluoroethylene are solvent welded together. The solvent welding solution comprises a copolymer of vinylidene fluoride and trifluoroethylene and a suitable solvent. The transducers produced from such a laminated structure are also disclosed.

Abstract: A method of making a resin encapsulated pin grid array which includes an IC chip mounted on a resin substrate having a plurality of contact pins on its lower surface and resin-encapsulated by injection molding. A metal heat radiating member is integrally formed on the upper surface of the encapsulating resin when the encapsulating resin is injection-molded.

Abstract: Ceramic bodies are bonded together via a layer of an oxidation reaction product of a molten metal, which metal is present in one or both of the ceramic bodies prior to bonding. At least one of the ceramic bodies comprises a ceramic product formed by the oxidation reaction of molten parent metal (e.g., alumina from molten aluminum) and grown as molten metal is transported through, and oxidized on the surface of, its own oxidation product. One or both of the ceramic bodies used in the bonding process contains surface-accessible channels of residual metal, i.e., metal channels which have resulted from molten-metal transport during the ceramic growth process. When the suitably assembled ceramic bodies are heated in the presence of an oxidant at a temperature above the melting point of the residual metal, molten metal at the surface of at least one of the body ceramic bodies reacts with the oxidant to form a layer of oxidation reaction product, which may or may not incorporate at least one filler material.

Abstract: Described are smooth, glossy finished fiber reinforced thermoplastic prepreg materials composed of reinforcement fibers impregnated with and surrounded by thermoplastic. Prior to consolidation, the material preferably consists of thermoplastic fibers and reinforcing fibers, intimately blended together. When heated, with the aid of pressure, the thermoplastic fibers melt, surround and impregnate the reinforcing fibers and provide a smooth, glossy finish to the reinforced article. Excellent surface appearance and the ability to accommodate high-speed processing characterize the prepreg materials of this invention.

Abstract: Fiber reinforced thermoplastic molded products, sheets, and the like, having a glossy surface are produced by intimately blending discrete reinforcing fibers (e.g. fiberglass) and thermoplastic fibers (e.g. polypropylene or polycarbonate) into a web. The web is heated to the melting point of the thermoplastic fibers while applying pressure, to eliminate air and press the web into a consolidated structure. Breakage of the reinforcing fibers is minimized by limiting the thickness of the web and limiting the pressure so as to produce a consolidated structure with minimal fiber breakage and a Notched Izod of at least one. Layering consolidated structures, some without reinforcing fibers, may be heated and pressed together to form a final structure having a thickness greater than the individual structures. The great majority of the fibers are provided so that the fibers of each type are within the range of about 0.5-5 inches.

Abstract: An electrical component, such as a joint between bus bars, is insulated by wrapping therearound a sheet of gel-like material, and manually causing it to conform to the joint. The material is curable by ultra-violet radiation, and this is directed on to the wrapped sheet to cause it to harden. A recoverable tube may be mounted over the sheet, before or after curing, to provide additional protection.

Abstract: Ceramic bodies are bonded together via a layer of an oxidation reaction product of a molten metal, which metal is present in one or both of the ceramic bodies prior to bonding. At least one of the ceramic bodies comprises a ceramic product formed by the oxidation reaction of molten parent metal (e.g., alumina from molten aluminum) and grown as molten metal is transported through, and oxidized on the surface of, its own oxidation product. One or both of the ceramic bodies used in the bonding process contains surface-accessible channels of residual metal, i.e., metal channels which have resulted from molten-metal transport during the ceramic growth process. When the suitably assembled ceramic bodies are heated in an oxidizing atmosphere at a temperature above the melting point of the residual metal, molten metal at the surface of the ceramic body reacts with the atmosphereic oxidant so as to bond the facing surfaces together by a layer of the oxidation reaction product of the molten metal formed therebetween.

Abstract: A container closure is comprised of a closure member molded on a liner, the liner having a first surface secured to the closure member and a second surface opposite the first surface and including a member depending therefrom and configured both for effecting sealing of a container and for releasable securement of the liner to a forming member in the course of such molding of the closure member thereon. The closure member and liner materials may thus be diverse, since they are separately formed. While there are separate manufacturing steps for making the liner and the closure member, the customary step of assembling preformed liners with preformed closure members to obtain desired performance diversity therebetween is eliminated.

Abstract: A process and a molding unit for the automatic molding, expelling and assembling to one another of at least a pair of plastic handles for a plastic bag, consisting of a male and female handles (A and B) and provided with snap fastening means for closing said bag, characterized by the use of a molding unit comprising:two mold blocks, each having a cavity for removably receiving a mold, respectively said cavities and the molds forming two juxtaposed molding chambers, separated from one another by slidable wall members constituting in combination the countermolds of the two respective molding chambers in operative position thereof,means for moving the mold blocks together with the molds to and from one another,means for slidably moving said slidable wall to and from its closing position,injection means for feeding molded plastic material into both molding chambers shaped to form a female and a male handles (A and B),punch means to form in each male handle (A) each pin of the snap fastening means as well as the r

Abstract: Thermoplastic resin parts are opposingly placed from each other and a concentrated blast of hot air is applied to opposite areas of these parts to be welded while the parts are rotating. After melting the opposing areas of these parts by application of the hot air thereto, the parts are then forced into integral contact with each other.

Abstract: A method is disclosed for assembling fluidic spray devices wherein a fluidic element formed on the surface of a body member is expeditiously sealed to form the device. The essence of the invention is the injection molding of plastic around or through the body and a cover plate, or into a prefabricated housing into which the body member is inserted, to preload the parts and force them into a permanent sealed assembly. In one embodiment the preloading is achieved by shrinkage tension of injected plastic material surrounding or penetrating the parts. In a second embodiment the preloading is achieved by injecting plastic material into a gap or gaps in a product housing containing the body member so as to force the element surface against a sealing surface.

Abstract: A valve especially suitable as a relatively cheaply manufactured means for controlling liquids in laboratory equipment, comprises a body having a valve seat with a flow passage passing through the seat, and a spindle located within the body; the spindle comprising a mandrel having an annular groove, a resilient annulus located in the annular groove, and an inert sheath fitted closely over the surface of an end portion of the mandrel and overlying the resilient annulus, the sheath having a closed end shaped to engage the seat for occlusion thereof and having overlying the resilient annulus an annular sealing portion standing proud of the surface of the rest of the sheath, the annular sealing portion being biased against the surrounding body to form a sliding gland seal. The sheath may be preformed or moulded in situ, and protects the mandrel and resilient annulus from attack by fluids flowing through the valve.

Abstract: A method for bonding expanded polymeric parts without an adhesive. The method comprises wetting the surfaces to be bonded with water or water containing from about 1% to 2% wetting agent, positioning the surfaces to be bonded in a nonmovable abutting relationship, encapsulating the joint formed by the abutting surfaces with a mold, and, while encapsulated, passing high frequency electrical energy therethrough to effectuate a bond.