Abstract: A lightweight, low cost throttle body and throttle valve placed in the body, both formed of resins, that resolve the problem of excessively large gap formation is disclosed. Circumferentially oriented filler contained in a resin forming a throttle valve compensates to make the radial linear expansion coefficient of the throttle valve substantially equal to that of a bore. Grooves are formed on concentric circles in the throttle valve to orient filler circumferentially. A throttle valve provided with circumferentially oriented filler can be formed by impregnating an aggregate formed by circumferentially arranging the filler with a resin and curing the resin. A rib is formed in a part near a throttle shaft to control molding shrinkage so that the roundness of the bore is small.

Abstract: A lightweight, low cost throttle body and throttle valve placed in the body, both formed of resins, that resolve the problem of excessively large gap formation is disclosed. Circumferentially oriented filler contained in a resin forming a throttle valve compensates to make the radial linear expansion coefficient of the throttle valve substantially equal to that of a bore. Grooves are formed on concentric circles in the throttle valve to orient filler circumferentially. A throttle valve provided with circumferentially oriented filler can be formed by impregnating an aggregate formed by circumferentially arranging the filler with a resin and curing the resin. A rib is formed in a part near a throttle shaft to control molding shrinkage so that the roundness of the bore is small.

Abstract: A lightweight, low cost throttle body and throttle valve placed in the body, both formed of resins, that resolve the problem of excessively large gap formation is disclosed. Circumferentially oriented filler contained in a resin forming a throttle valve compensates to make the radial linear expansion coefficient of the throttle valve substantially equal to that of a bore. Grooves are formed on concentric circles in the throttle valve to orient filler circumferentially. A throttle valve provided with circumferentially oriented filler can be formed by impregnating an aggregate formed by circumferentially arranging the filler with a resin and curing the resin. A rib is formed in a part near a throttle shaft to control molding shrinkage so that the roundness of the bore is small.

Abstract: One or more pre-molded resin inserts (2) are placed in a metal mold and an outer molded resin body (3) is formed about the insert. The cooling speed is increased by: forming the insert with projections (21) to space a rear part of the insert from walls of the metal mold so that molten resin flows into position about the insert; forming convex parts (22) on portions of the outer resin body adjacent the insert (2); forming recesses (23) in the molded outer housing, the recesses extending between the inserts and formed to receive fins of a front metal mold part; forming plural pin carrier inserts as one unit; or forming the inserts as layered bodies. This increases heat transfer from the outer body molten material to the cooler metal mold parts at regions adjacent to the pre-molded insert.

Abstract: A lightweight, low cost throttle body and throttle valve placed in the body, both formed of resins, that resolve the problem of excessively large gap formation is disclosed. Circumferentially oriented filler contained in a resin forming a throttle valve compensates to make the radial linear expansion coefficient of the throttle valve substantially equal to that of a bore. Grooves are formed on concentric circles in the throttle valve to orient filler circumferentially. A throttle valve provided with circumferentially oriented filler can be formed by impregnating an aggregate formed by circumferentially arranging the filler with a resin and curing the resin. A rib is formed in a part near a throttle shaft to control molding shrinkage so that the roundness of the bore is small.

Abstract: A cathode-ray tube includes a plate having a first hole on a first surface of the plate and a second hole on a second surface of the plate. The first and second holes coupled together to allow electron beams to pass therethrough. The plate is a unitary structure. The first hole is formed by initiating a first hole formation from the first surface, and the second hole is formed by initiating a second hole formation from the second surface. The first surface is on an opposing side of the second surface.

Abstract: A cathode-ray tube includes a plate having a first hole on a first surface of the plate and a second hole on a second surface of the plate. The first and second holes are coupled together to allow electron beams to pass therethrough. The first hole has a first diameter, and the second hole has a second diameter.

Abstract: The present invention provides a following housing for electronic equipment. The housing has a metal board having an adhesive layer to which one or more components are attached. In the housing, at least one of the components is formed on a surface of the metal board opposite a gate for injection molding by injecting a molding material through a through hole previously pierced in the metal board. The component has an appearance on a side of the housing opposite the gate for injection molding. Further, in the housing, at least one portion of the metal board at a side wall thereof has a convex shape.

Abstract: In a tabless lead frame wherein a space for laying inner leads is sufficiently secured when a lengthened and enlarged semiconductor pellet is placed or set in a resin-molding package, through holes are provided in leads for the purpose of increasing the occupation area ratio of a resin portion. Furthermore, each of the leads corresponding to the lower surface of the pellet is branched into a plurality of portions in the widthwise direction thereof in order to reduce a stress. Further, in an insulating sheet which is interposed between the leads and the pellet, the dimension of the shorter lateral sides thereof is set smaller than that of the shorter lateral sides of the pellet in order to prevent cracks from occurring at the end part of the insulating sheet.