A manufacturing method for a connector housing to which an elongated metal terminal is connected may include injecting molten resin into a mold so as to form the connector housing. The mold may include a first projection configured to form an inlet for the metal terminal and a second projection configured to form a terminal connection space communicating with the inlet, the second projection being movable relative to the first projection. A diameter of a tip end of the second projection may be larger than a diameter of a tip end of the first projection and a recess in which the tip end of the first projection is inserted may be provided in an end face of the second projection.

In order to prevent shaft portion from being broken in ejection of base portion from mold, method for manufacturing interdental cleaning tool includes: base portion forming step of forming base portion by filling first space of primary mold (50) with synthetic resin, which includes first and second mold members (50A, 50B); and cleaning portion forming step of forming cleaning portion around shaft portion by filling second space of secondary mold with elastomer. Base portion forming step uses first and second mold members (50A, 50B). First and second molds include: first and second contact surfaces (51A, 51B); pair of first and second spaced-apart portions (54A, 54B); and first and second connection portions (52A, 52B), angle (0) between each of first and second spaced-apart portions (54A, 54B) and separation plane being acute.

A protective cover includes: a synthetic resin disc part having formed therein a separation wall which is thinner than other parts of the disc part and separates a magnetic encoder and a magnetic sensor from each other; and a synthetic resin sensor holder part protruding inward from the disc part. A gate mark caused by the injection molding is present n an outer peripheral surface of the disc part or an outer peripheral surface of a cylindrical part continuous with the disc part, in the radially outer side of the separation wall. Since the gate is at the radially outer side, of the separation wall, which is near the separation wall, no charging end weld is generated on the separation wall when a molten synthetic resin material is injected from the gate into the cavity of the injection mold die and solidified in an injection molding step.

An over-molded valve stem for a valve assembly includes a rigid inner member and a unitary elastic cover molded over the inner member. The inner member includes a main section and an arm extending from the main section. The cover includes a main cover portion, an arm cover portion, and an end portion, with the end portion being spaced from the main cover portion by the arm cover portion. The main cover portion is disposed over the main section with the end portion and main cover portion defining diameters that are larger than the diameter of the arm cover portion. The end portion can include an integral seal member for engaging with a bore of the valve assembly. A method of making the valve stem involves molding the cover about the inner member such that a parting line doe not axially extend across sealing surfaces.

A housing and methods of manufacturing a housing are described. The housing may include a plurality of faces and a plurality of surfaces. Two of the plurality of surfaces may be parallel to within 1 degree. The at least two of the plurality of surfaces are without parting lines formed by interfacing tool components.

A method of manufacturing a molded resin component having a decorative pattern by filling a cavity with resin includes using a mold set in which a concave portion is formed along a boundary portion between the plurality of pieces, the concave portion being used to form one portion of the convex portion of the decorative pattern, or using a mold set including a step formed when a base material is cut, and when a cutting tool is replaced at a position where a concave portion is to be formed, the concave portion being used to form one portion of the convex portion of the decorative pattern.

In an injection molding mold, a cavity to shape an impeller is formed on a cavity piece. The cavity piece includes an inner piece portion on which the cavity is formed, and a support piece portion turnably supporting the inner piece portion and movably mounted on a fixed-side mold. This cavity piece is moved to a first mold separating position together with a movable-side mold. The inner piece portion is formed such that a spiral pattern groove to shape a plurality of spiral pattern vanes of the impeller constitutes a part of the cavity. When the movable-side mold separates from the cavity piece at the first mold separating position, the impeller moves integrally with the movable-side mold and separates from the inner piece portion while turning the inner piece portion such that the vane slides and moves inside the spiral pattern groove of the inner piece portion.

A mold fabrication element has a hollowed volume defining a respective continuous inner surface. A fabricator resource disposes the mold fabrication element into a cavity of an injection mold assembly; surface contours on the inner surface of cavity as well as the respective continuous inner surface of the mold fabrication element exposed in the cavity define an outer surface of a resulting injection molded part. To create the injection molded part, the fabricator resource injects liquefied material into the cavity. The injected material contacts the continuous inner surface of the hollowed volume in the mold fabrication element as well as the surface contours of the cavity. After the injected material solidifies, the fabricator resource removes a combination of the injection molded part and the mold fabrication element. The fabricator resource separates the mold fabrication element from the injection molded part for further processing and use of the injection molded part.

An insulator includes a first portion, a second portion, a pair of coupling portions, a first stopper surface and a second stopper surface, and a plurality of protrusions. The second portion is arranged underneath the first portion across a predetermined virtual axis. The pair of the coupling portions couple the first portion to the second portion. The pair of the coupling portions are separately arranged on both sides in an axis-perpendicular direction of the virtual axis. The first stopper surface and the second stopper surface are famed on the first portion and the second portion, respectively, between the pair of the coupling portions with intervals to the coupling portions. The plurality of the protrusions project from at least one of the first stopper surface and the second stopper surface. The plurality of the protrusions are arranged in an axial direction and the axis-perpendicular direction of the virtual axis.

A truck mount for a skateboard which supports a skateboard truck is disclosed. The truck mount includes features that may be molded and include wheel clearance, stop features, and improved stiffness and load carrying ability. The mount includes a truck mount area, a board mount area, and a narrow area that connects the truck mount area with the board mount area. The truck mount area and the board mount area are vertically offset and the narrow area includes a stop feature.