Abstract: The invention relates to a method for producing a throttle valve unit for installation into a flow conduit through which a gas flow passes. A flap shaft of the throttle valve unit is affixed to a stamped insert part inside a fastening region. The stamped insert part, which includes an insert border, is molded into a housing. At the same time as the stamped insert part is molded into the housing, the flap shaft affixed to the stamped insert part is molded-in inside the fastening region. A planar region of the stamped insert part connected to the flap shaft is cut out from this stamped insert part.

Abstract: An electrically controlled throttle apparatus is constructed with a throttle body and a throttle valve that are simultaneously formed in the same dies. The throttle valve is rotatably assembled in a bore wall part of the throttle body while the throttle valve is rotated by a predetermined rotation angle ? with respect to a rotation angle 0° corresponding to its full close position. Besides, a clearance is formed between the throttle body and the throttle valve around a portion in the vicinity of a throttle shaft of the throttle valve and a shaft hole of the throttle body. Furthermore, a joint is inserted between the throttle shaft and the shaft hole in the forming process thereof. Thus, the throttle body and the throttle valve can be separated by the molding dies and the joint, and the throttle body and the throttle valve can be prevented from welding to each other in a forming process thereof.

Abstract: The present invention discloses a valve integrally associated with a microfluidic transport assembly that is useful for regulating the flow of a liquid sample through an analytical instrument such as, for example, a biosensor.

Abstract: A valve cover suitable for attachment to an engine head is disclosed. The valve cover is molded from a plastic material to include at least one structure of a positive crankcase ventilation (PCV) system. Additionally, the design of the valve cover includes various advantages including, for example, structural integrity, ease of installation or the like.

Abstract: A control valve assembly comprising at least two control valves which may be used, for example, to throttle the air intake of an internal combustion engine. The assembly is provided with a centrally arranged, force-transmitting shaft (32). The control valves are formed by blades (15) in frames (16) produced by an assembly injection molding process. The control valve blades (15) can be molded onto the force-transmitting shaft (32). The resulting assembly can be mounted or installed as a unit. Alternatively, instead of using a single continuous shaft, shaft projections can be injection molded on the valve blades, which terminate in lugs which engage in a rotationally secure manner in sockets in an adjacent valve assembly so that the two assemblies rotate together as a unit. The resulting control valve assembly is easy to install and advantageously takes up only a little space.

Abstract: A combination valve including a metal sleeve and a valve body. The valve body is formed of a resilient material and insert bonded or vulcanized to the metal sleeve and includes a cylindrical elongated member defining a passageway therethrough and an annular umbrella portion integrally extending from the elongated member. The elongated member is disposed within the metal sleeve and has converging flexible lips. The metal sleeve includes a plurality of prongs at one end and the valve body includes a top surface. The prongs of the metal sleeve extend to the top surface of the valve body, whereby the valve can be press-fitted into location without damaging the valve body. Between the prongs of the metal sleeve are gaps which permit the molding material to flow from the umbrella portion to the elongated member during the molding of the combination valve.

Abstract: The invention relates to a method for manufacturing a throttle (3) in a hose (1), characterized in that the wall (13) of the hose (1) is manufactured in such a way that the interior of the hose (1) has a constriction in part of its length. (FIG.

Abstract: A nozzle plate, particularly for fuel injection valves, with at least one flow path which has at least one supply opening, which path includes a ring gap which opens into a ring-shaped exit opening, as well as a method for the production of such a nozzle plate. For the nozzle plate, it is provided that the flow path has a ring channel assigned to the supply opening, which channel makes a transition into a cylinder-shaped ring gap with a cross-section which narrows in the region of the exit opening. The production of the nozzle plate takes place in that a cavity mold corresponding to the flow path through the nozzle plate is produced, that a layer embedding the cavity mold is galvanically deposited, and that the cavity mold is removed from the galvanically deposited layer.

Abstract: Use of pump and line fuel injectors has become more common in fuel injection systems. While these fuel injectors do not typically include individual electrical actuators or fuel pressurization means, they still include a number of components that must be intricately machined in order for the fuel injector to perform as desired. The present invention is directed to reducing the number of machining steps, and therefore the cost, of producing such a fuel injector by utilizing a plastic component that can allow for a reliable and cost effective replacement of more intricately machined fuel injector components.

Abstract: An injection mold design system for correcting a profile of a product to be fabricated into a releasable profile from a mold to design an injection mold based on a corrected product shape, comprising storing information of product shape and mold profile, displaying the product shape or the mold profile on a screen based on the information read from the storing, inputting designation information necessary for correction of the product shape or the mold profile, and unloading information of lines or planes being obstructive to correction of the product shape and the mold profile into the storing in response to the designation information input removing the lines or the planes from the screen, and replotting the line or the planes on the screen in terms of the information of lines or planes unloaded into the storing after the correction operation of the product shape or the mold profile is completed.

Abstract: A flush valve is adapted for placement through a hole in the bottom of a toilet tank. The valve seat has an axis with a lower section adapted to extend through the hole and an upper section defining an opening generally perpendicular to the axis. A first sleeve communicates with a central channel in the upper section. A valve elbow has a second axis with an overflow section and a second sleeve registerable with the first sleeve to provide fluid communication between the overflow section and the (central channel) an associated method includes injection molding steps wherein first and second core pins are removed laterally and the second sleeve is inserted into the first sleeve to provide fluid communication between the overflow section of the valve elbow in the central channel of the valve seat.

Abstract: A heat exchanger comprises an as-cast combined header and tank having a header portion integral with a tank portion. The cast header and tank combination has a plurality of openings originally cast in the header portion of the combination and at least one opening originally cast in the tank portion of the combination for passage of coolant into or out of the cast header and tank combination. Tubes are received in and extends through the header portion openings, and resilient grommets seal the tubes to the header portion to prevent leakage around the tubes. In making the heat exchanger, there is provided an inner mold section and outer mold section corresponding respectively to the interior and exterior configurations of a desired combined header and tank having a header portion integral with a tank portion.

Abstract: In an intake air quantity controlling device for a combustion engine, a supporting portion of a bearing 10 for a valve shaft 9 having a choke valve 11, rotatably operated in an intake air passage 2, a supporting portion of a shaft of an intermediate gear 6, and a reference hole for a shaft of a rotor 12 fabricating a motor are formed in a metallic plate 15, whereby the intake air quantity controlling device has a high dimensional accuracy and a high strength.

Abstract: A method of manufacturing a squeeze-type container package that comprises a flexible resilient container body and a self-sealing closure assembly mounted to the mouth of the container body. The self-sealing closure assembly includes a dispensing valve of one-piece integrally molded elastic construction having an annular base, an internal wall portion that extends radially inwardly and axially from the base, and a mouth portion that includes a slit opening oriented diametrically of the annular base. Internal stresses within the wall portion bias the slit to the closed position. An annular lip that extends radially outwardly from the valve cooperates with an annular internal rib on the closure for venting the interior of the container body to atmosphere when the container body is released following dispensing of product.

Abstract: A worker inserts a correcting pin into bearing members. Then, a cylindrical portion and retaining portions are molded together into an integrated resin unit. After finishing the molding operation, the worker extracts the correcting pin from the bearing members and subsequently inserts a throttle shaft into the bearing members. Accordingly, an axial center of the bearing member accurately agrees with an axial center of the bearing member. Then, the worker fixes a throttle valve to the throttle shaft.

Abstract: This invention relates to a process for production of shaft passages in a molded plastic part, a mold, and the use of the process of production in, for example, a flap device particularly for a feed system for internal combustion engines, characterized in that it consists of: providing a recess by the advance of a slide of the molding tool between two adjacent bearings each associated with sites of different moving parts, and forming a bearing portion on each side of the sites of each moving part by a moving wedge relative to a slide, whereby the wedge carries a pin that is intended to form a bearing portion of one side of the moving part.

Abstract: A method of making air assist passageways and injector pockets in a manifold or air assist rail includes providing a mold that can open and close with several bosses extending from an inside surface. These bosses are arranged in a row and define the inside of the injector pockets when the mold is filled. The air assist passageway that couples the fuel injector pockets is provided by inserting a long pin that passes through the row of injector pocket bosses inside the mold cavity. When the cavity is filled with molten material and solidifies, the pin is withdrawn, leaving a long air assist passageway extending between the injector pockets. The mold is then opened, pulling the injector pocket bosses out of the now-formed injector pockets. The resulting structure is a row of injector pockets in a manifold or air assist rail into which injectors can be inserted, that are connected by a long air assist passageway.