Abstract: An apparatus for producing a multilayer molded article including a resin body and at least one sheet of a skin material, an edge part of which is present in a surface area of the resin body. The apparatus includes a mold, and a clamping device for clamping an edge part of a skin material or mated edge parts of adjacent skin materials during molding.

Abstract: A driver head for golf of which main body is a core member, the core member comprising a required number of small pieces of aluminum plate or small masses of foamed aluminum, the small pieces of aluminum plate or small masses of foamed aluminum being put into a mold for compression molding and welded to each other by use of an electric current.

Abstract: A pressure molding apparatus for molten resin in which an oil-pressurized cylinder internally holding an end of gate pin can freely move in compatibility with thermal elongation or contraction of a manifold pipe. In addition, a limit switch to be activated by the descending movement of this cylinder in correspondence with the descending movement of the gate pin is interlinked to a molten-resin supply source. By provision of these mechanisms, molten resin can smoothly be delivered to the interior of a molding unit without obstruction. Since substantial space is provided around this cylinder, pipes can easily be installed. Furthermore the inner later surface of the gate aperture on the side of the gate pin is provided with an obtuse angle wider than the tip angle of the gate pin, and a tapered hole having an adequate length and tapered diameter expanding itself from the gate aperture to the inner surface of the molding unit is provided.

Abstract: A multilayer molded article comprising a resin body and at least one sheet of a skin material an edge part of which is present in a surface area of the resin body is efficiently produced by clamping an edge part of a skin material or mated edge parts of adjacent skin materials during molding.

Abstract: A pin-ball type reduction gear comprising of a casing rotatably supporting an input shaft and an output shaft such that the input shaft is butted against the output shaft with an interval. A planetary disk eccentrically and rotatably supported by the input shaft. A wave-shaped epitrochoid curve groove, and balls in the number larger than that of the waves of the epitrochoid curve groove, which are provided between the casing and the planetary disk in such a manner as to be engaged with each other and a plurality of pins provided between planetary disk and the output shaft so as to be in parallel to the input shaft and the output shaft, and pin insertion holes each inserted with the pins. The pins and pin insertion holes in the same number are disposed along a circle of the planetary disk or output shaft around the axis of the planetary disk or output shaft and gaps allowing the eccentric motion of the planetary disk to the output shaft are each formed between the pin insertion holes and pins.

Abstract: This invention is directed to a pressure molding apparatus for molten resin in which an oil-pressurized cylinder internally holding an end of gate pin can freely move in compatibility with thermal elongation or contraction of a manifold pipe. In addition, a limit switch to be activated by the descending movement of this cylinder in correspondence with the descending movement of the gate pin is interlinked to a molten-resin supply source. By provision of these mechanisms, molten resin can smoothly be delivered to the interior of a molding unit without obstruction. Since substantial space is provided around this cylinder, pipes can easily be installed. Furthermore, the inner lateral surface of the gate aperture on the side of the gate pin is provided with an obtuse angle wider than the tip angle of the gate pin, and a tapered hole having an adequate length and tapered diameter expanding itself from the gate aperture to the inner surface of the molding unit is provided.

Abstract: A novel and improved rotary shaft coupling including a ball-type speed reducer. A driving disc is coupled to a driven disc through a plurality of balls loosely held in a circular array of holes. Each ball registers with opposing faces of elliptic and hypocycloidal grooves of the driven and driving disc, respectively. When the driving disc is rotated, the balls transmit a turning force through the grooves to the driven disc. Speed reduction is determined by the number of waves in the hypocycloidal groove exceeding, by an even number, the number of balls.

Abstract: A rocker-pin type continuously variable transmission chain having a plurality of link plates connected endlessly by rocker pins which project into pin insertion holes formed in the link plates. Each pin insertion hole defines thereon a side load transmitting surface which engages an opposed side load transmitting surface on the rocker pin. These load transmitting surfaces on the rocker pin and hole have opposed center surface portions which are maintained free of contact with one another. A pair of concave surface portions are smoothly joined directly to opposite ends of the center surface portion of the hole, and project outwardly in opposite directions therefrom. A similar pair of convex surface portions are formed on the rocker pin, and are joined to opposite ends of the center surface portion thereof and project outwardly therefrom.

Abstract: A pressure molding apparatus for supplying molten resin to a mold includes a gate unit having an aperture therein for passage of molten resin into a mold cavity of the mold, a gate pipe connected for communication with the gate unit, and a gate pin which is axially movable within the gate pipe. The gate pin has a gate pin end at one end and a tip at another end thereof, the tip being engageable with the aperture for controlling flow of molten resin through the gate unit. The apparatus also includes a manifold pipe for supplying molten resin to the gate pipe, a connection arrangement for connecting the gate pipe to the manifold pipe. The connection arrangement includes a receiving portion for receiving molten resin from the manifold pipe, the gate pin passing completely through the receiving portion and the gate pin end extending beyond the connection arrangement.

Abstract: A method of manufacturing a laminated body consisting of a synthetic resin member provided with a layer member thereon, in which the member is bent to cover the edges of the resin member. The method includes the compression, resulting from a male mold and a female mold approaching each other, of the layer member and molten resin. The female mold has flanges mounted on its edges to permit the layer member to cover the edges of the resin during compression. Molten resin materials are supplied between the male and female molds prior to subsequent to the compression.

Abstract: A rocker-joint silent chain in which the pin insertion holes for each link have rocker-joint connecting pin means extending therethrough. Each pin insertion hole has two opposed, spaced-apart surfaces each having the cross-section form of arcs of uniform radius. The centers of curvature of said two surfaces are offset from one another so that they define an arcuate, but noncircular, cavity which is effective to wedge said connecting pin in load-transmitting relationship to its associated link when the chain is driven.

Abstract: The invention provides a pressure molding apparatus for molten resin capable of efficiently maintaining the temperature of molten resin in the gate pipe, which is provided with molten-resin feeding gate pipes beneath the gate aperture of a molding unit composed of upper and lower molds in order that molten resin can be delivered to the interior of the molding unit before being pressed and molded, where the heater unit for maintaining the temperature of molten resin is disposed in the external periphery of the gate pipes in the state of being divided into two units in the vertical direction. Opposite portions of the gate pipe vertically being divided into two units are connected to each other so that length can optionally be adjusted to the extended or contracted direction, wherein the heater unit is discretely provided in the periphery of the gate pipes which are separately disposed.

Abstract: A process for the formation of a laminated body consisting of an upper layer member which covers a hardened synthetic resin is disclosed. The process includes the compression, resulting from a female mold and a male mold approaching each other, of the layer member and molten resins. The final engagement of the molds permits the cutting of the layer member so as to form or shape the ultimate laminated body.

Abstract: An endless belt, for use in a variable speed transmission comprising at least one pulley having opposed conical surfaces, comprises a loop-shaped stack of I-shaped friction plates having left and right recesses, with chains located in the recesses in side-by-side relationship. Each chain comprises interleaved link plates, and the chains are out of phase with each other by one-half the pitch distance. Each friction plate is engaged, in driving relationship, in notches in the link plates of one of the two chains, and the next friction plate is engaged, in driving relationship, in notches of the link plates of the other chain. There are no friction plates which are not engaged in notches of the link plates. Consequently less pressure and improved friction are achieved. The preferred link plate comprises two separable layers formed by stamping. In one preferred embodiment, the chains comprise interleaved groups of link plates of uniform thickness, and each group consists of the same number of link plates.

Abstract: A multilayer molded article including a resin body and a skin material having little or no wrinkles or breakage in the skin material is molded by molding a resin melt and the skin material in the mold while removing the air trapped between the skin material and the mold.

Abstract: An improved rocker joint pin type CVT chain has link plates connected by rocker joints, each including a rocker pin and a seat pin in an insertion bore of the link plate, the rocker pin and the seat pin making rolling contact along opposing rolling arcuate surfaces thereof as the chain bends and straightens when passing around a pulley. At respective minimums, the sectional area of the link plate formed between the link plate insertion bore and the outer periphery of the link plate relative to the pulley, is greater than the sectional area formed between the link plate insertion bore and the inner periphery. The radii of curvature of the inner rolling contact surfaces of the rocker pin and seat pin are smaller than those of the outer rolling contact surfaces.

Abstract: An improved friction drive chain especially for a continuously variable transmission has a plurality of friction plates, each of the friction plates being substantially I-shaped in lateral section. The friction plates are arranged adjacent one another and connected by connecting link elements received in recesses formed in both lateral sides of the friction plates between upper and lower beam members of said friction plates. The connecting link elements are laterally grooved to bear longitudinally against the friction plates. The outer surfaces of the lower beam members of the plates define friction drive surfaces for contact with driving and/or driven pulleys. The friction plates are heat treated to increase strength, for example by quenching and annealing. The friction drive surfaces are formed with hardened layers by surface hardening treatment such as by electron beam or laser.

Abstract: A rocker pin type continuously variable transmission chain comprising a plurality of link plates connected endlessly by paired rocker pins, each of the load transmitting surfaces of each rocker pin insertion bore having an arcuate portion, opposing the planar portion of each rocker pin, with a radius of curvature greater than that of the convex portions of the rocker pins to prevent rotation of the rocker pins in the bores, whereby load forces are transmitted by extensive surface contact areas.

Abstract: A device for connecting a wheel or wheel-like body to a shaft has tapered inner and outer wedge rings that can be formed over one another using a captive nut. An expanded inner ring has axial slits and fits over the shaft. The inner ring has a tapered outer peripheral surface portion and a threaded cylindrical portion extending along the shaft. An expandable outer ring has a plurality of part-cylindrical segments and can be inserted between the inner ring and the wall of an axial bore in the wheel or wheel-like body. The outer ring has a tapered inner surface which is complementary to the tapered outer surface of the inner ring. The outer ring has a first annular groove formed in its inner peripheral surface adjacent to its minimum inside diameter end and a second annular groove formed in its outer peripheral surface. The segments are held together by a retaining ring fitted in the second annular groove of the outer ring.

Abstract: An improved process for producing an alcohol by hydrating an olefin, wherein the improvement comprises hydrating an olefin in the presence of hydrogen-type mordenite or hydrogen-type zeolite Y as a catalyst each having a silica/alumina molar ratio of 20 to 500.