Abstract: A torque-transmitting device is advantageously applied to a secondary air control valve mounted on an automotive vehicle. The device includes a gear train for reducing a rotational speed of a motor and a mechanism for converting a rotational motion to a linear motion of a valve shaft. The gear train includes a final gear coupled to the valve shaft, and the final gear includes a flange positioned at an axial end of an axis of the final gear. A coil spring for biasing the final gear toward a predetermined position is disposed next to the flange and around the axis of the final gear. Slits or holes are formed through the flange, so that holding jigs for holding the coil spring are inserted, in an assembling process, into a cylindrical space between an inner circumference of the coil spring and the axis of the final gear.

Abstract: A cross-sectional shape of a first intake passage is formed in a circular shape and a cross-sectional shape of a second intake passage is formed in a rectangular shape. Thus, an opening area of a second intake throttle portion can be made larger than an opening area of a first intake throttle portion even when the opening area of the first intake throttle portion is narrow and an intake air quantity supplied into a combustion chamber of an engine is small as in the case of engine start-up or engine idling operation. Accordingly, an intended strong tumble flow in accordance with a demand for improving a combustion efficiency in the combustion chamber can be generated in the combustion chamber while achieving the intake air quantity necessary during the engine start-up or the engine idling operation.

Abstract: A valve device includes a control valve for manipulating a communication between a first fluid channel and a second fluid channel. The valve device further includes a pressure sensor for detecting pressure in the first fluid channel. The pressure sensor is provided on a side face defining the first fluid channel. The pressure sensor has a pressure detection face directly opposed to the first fluid channel. The pressure detection face is substantially in parallel with a first axis of the first fluid channel.

Abstract: A fluid-controlled valve includes a housing, a valve, and a sealing member. The housing has an annular valve seat, which has a fluid passing hole therein. The valve sits on or is separated from the valve seat to close or open the fluid passing hole respectively. The sealing member is attached on the valve. The sealing member has a sealing lip, which is closely attached to the valve seat while the fluid passing hole is closed by the valve, to seal a gap between the valve seat and the valve. The sealing member has a load receiving portion, which contacts the valve seat while the fluid passing hole is closed by the valve, in addition to the sealing lip.

Abstract: A motor-operated valve assembly has a housing, a motor, a driving force transmission means and a valve member. The housing has a fluid passage therein. The motor is installed in the housing. The driving force transmission means has an output rotor rotatably supported by the housing and transmits a driving force of the motor to the output rotor. The valve member is supported by the housing between the motor and the output rotor to be slidable in an axial direction thereof and engaged with the output rotor so that the output rotor slides the valve member to open and close the fluid passage.

Abstract: A torque-transmitting device is advantageously applied to a secondary air control valve mounted on an automotive vehicle. The device includes a gear train for reducing a rotational speed of a motor and a mechanism for converting a rotational motion to a linear motion of a valve shaft. The gear train includes a final gear coupled to the valve shaft, and the final gear includes a flange positioned at an axial end of an axis of the final gear. A coil spring for biasing the final gear toward a predetermined position is disposed next to the flange and around the axis of the final gear. Slits or holes are formed through the flange, so that holding jigs for holing the coil spring are inserted, in an assembling process, into a cylindrical space between an inner circumference of the coil spring and the axis of the final gear.

Abstract: An axial groove is provided in an inner peripheral wall surface of a motor case of a housing of a motor actuator, and a spring installation opening is provided to the axial groove at a location adjacent to an opening end of a motor receiving hole of the motor case, which receives a motor. A damper spring is inserted into the groove through the spring installation opening. The damper spring urges the motor against first and second ridges formed in the inner peripheral wall surface of the motor case.

Abstract: A secondary air pressure detecting apparatus includes a solenoid valve and a pressure sensor. The solenoid valve defines a secondary air passage that introduces secondary air from the air pump into the exhaust system of an engine. The solenoid valve opens and closes the secondary air passage. The pressure sensor is integrally mounted to the solenoid valve to detect pressure of secondary air in the solenoid valve. The solenoid valve includes a coil assembly and magnetic members. The coil assembly includes a solenoid coil that generates magnetic force when the solenoid coil is energized. The magnetic members construct a magnetic circuit with the solenoid coil. The magnetic circuit is arranged outside of the secondary air passage. The pressure sensor is arranged on an opposite side of the secondary air passage with respect to the magnetic circuit.

Abstract: An air control device is advantageously used as a device for supplying secondary air to a catalyzer contained in an exhaust pipe of an internal combustion engine. The air control device includes an electric motor, a speed reduction mechanism, a valve having a valve shaft and a biasing spring. These components are all contained in a housing that has a valve port formed therein. The valve is driven to open the valve port by the electric motor against a biasing force of the biasing spring. A rotational movement of a final gear in the speed reduction mechanism is converted into a linear movement of the valve shaft to thereby open the valve port. Since the biasing spring such as a torsion spring is wound around a flange connected to an axis of the final gear, a length of the valve shaft is made short, and the device as a whole is made compact.

Abstract: A fluid control valve assembly is disclosed that includes a housing. The housing defines an inlet pipe and a valve port in fluid communication with the inlet pipe, such that a fluid passes from the inlet pipe and through the valve port. The inlet pipe defines an inlet pipe axis and the valve port defines a valve port axis. The fluid control valve assembly also includes a valve movably supported within the housing. The valve includes a valve head for opening and closing the valve and a valve shaft coupled to the valve head. The valve shaft defines a valve axis that is coaxial with the valve port axis. The inlet pipe is orientated toward the valve port such that a positive, acute angle is formed between the inlet pipe axis and a plane perpendicular to the valve axis.

Abstract: A motor-operated valve assembly has a housing, a motor, a driving force transmission means and a valve member. The housing has a fluid passage therein. The motor is installed in the housing. The driving force transmission means has an output rotor rotatably supported by the housing and transmits a driving force of the motor to the output rotor. The valve member is supported by the housing between the motor and the output rotor to be slidable in an axial direction thereof and engaged with the output rotor so that the output rotor slides the valve member to open and close the fluid passage.

Abstract: A secondary air pressure detecting apparatus includes a solenoid valve and a pressure sensor. The solenoid valve defines a secondary air passage that introduces secondary air from the air pump into the exhaust system of an engine. The solenoid valve opens and closes the secondary air passage. The pressure sensor is integrally mounted to the solenoid valve to detect pressure of secondary air in the solenoid valve. The solenoid valve includes a coil assembly and magnetic members. The coil assembly includes a solenoid coil that generates magnetic force when the solenoid coil is energized. The magnetic members construct a magnetic circuit with the solenoid coil. The magnetic circuit is arranged outside of the secondary air passage. The pressure sensor is arranged on an opposite side of the secondary air passage with respect to the magnetic circuit.

Abstract: Certain embodiments of the present invention relate to a method for manufacturing a semiconductor chip, a method for manufacturing a semiconductor device, a semiconductor chip, a semiconductor device, a connection substrate and an electronic apparatus, in which semiconductor chips stacked in layers are electrically connected to one another without using wires. In one embodiment, after an electrode 18 is formed on a surface 16 of a first semiconductor chip 12, a hole 26 is formed from an opposite surface 24 thereof until a tungsten layer 20 of the electrode 18 is exposed. A protrusion 30 is formed by etching on a surface 31 of a second semiconductor chip 14 and thereafter an abutting electrode 32 is formed on an apex section of the protrusion 30. The first semiconductor chip 12 and the second semiconductor chip 14 are stacked on top of the other such that the abutting electrode 32 contacts the electrode 18.

Abstract: The electromagnetic valve has an electromagnetic actuator for operating a valve. The electromagnetic actuator has a movable core that reciprocally moves in an axial direction. A stator core has an attracting portion. The attracting portion has a conical portion that is defined by a uniform diameter inner surface and an outwardly inclined outer surface. The outer surface has a smaller diameter at a position closer to an initial position of the plunger. Therefore outer diameter of the conical portion is increased in an attracting direction of the plunger. Moreover, increasing rate of the outer diameter is decreased in the attracting direction. Therefore the outer surface has a greater inclination angle at a position closer to an initial position of the plunger.

Abstract: The present invention is a semiconductor device which can improve the adhesive force between a semiconductor chip substrate. This semiconductor device 60 has a semiconductor chip 18, a die pad (metallic portion) 16 on which the semiconductor chip 18 is fixedly mounted and supported through an adhesive layer 62, and a sealing resin 24 for sealing the die pad 16 and semiconductor chip 18. The adhesive layer 62 includes a plurality of conductive adhesive regions 66 and a plurality of insulative adhesive regions 64 together.

Abstract: The electromagnetic valve has an electromagnetic actuator for operating a valve. The electromagnetic actuator has a movable core that reciprocally moves in an axial direction. A stator core has an attracting portion. The attracting portion has a conical portion that is defined by a uniform diameter inner surface and an outwardly inclined outer surface. The outer surface has a smaller diameter at a position closer to an initial position of the plunger. Therefore outer diameter of the conical portion is increased in an attracting direction of the plunger. Moreover, increasing rate of the outer diameter is decreased in the attracting direction. Therefore the outer surface has a greater inclination angle at a position closer to an initial position of the plunger.

Abstract: An IC chip 1 is a flip chip type, which defines a main surface as a mounting surface that is externally exposed and is provided with external terminals 15 on pads 14. An IC chip 2 within a sealant member 6 is stacked on a rear surface of the IC chip 1 through an insulation adhesive member 3. A wiring substrate 4 for the IC chip 2 is provided around the IC chip 1. The wiring substrate 4 includes a base substrate 41 and an insulation film 43 having a conductive pattern 42 provided thereon. Specified portions of the conductive pattern 42 are connected respectively to pads 21 on the IC chip 2 by, for example, bonding wires 5. External terminals 45 for the IC chip 2 connect to a plurality of vias 44 in the wiring substrate 4. The above structure provides a semiconductor device that can achieve a thinner package while maintaining the reliability of each of the stacked IC chips at a high level.

Abstract: Certain embodiments of the present invention relate to a method for manufacturing a semiconductor chip, a method for manufacturing a semiconductor device, a semiconductor chip, a semiconductor device, a connection substrate and an electronic apparatus, in which semiconductor chips stacked in layers are electrically connected to one another without using wires. In one embodiment, after an electrode 18 is formed on a surface 16 of a first semiconductor chip 12, a hole 26 is formed from an opposite surface 24 thereof until a tungsten layer 20 of the electrode 18 is exposed. A protrusion 30 is formed by etching on a surface 31 of a second semiconductor chip 14 and thereafter an abutting electrode 32 is formed on an apex section of the protrusion 30. The first semiconductor chip 12 and the second semiconductor chip 14 are stacked on top of the other such that the abutting electrode 32 contacts the electrode 18.

Abstract: At least one of ammonia and ethylenediamine is reacted with monoethanolamine in the presence of a catalyst containing phosphoric acid or its condensate in order to prepare acyclic ethyleneamines, and the catalyst can be improved in performance and the life of the catalyst can be prolonged by feeding a phosphorus-containing material to a reaction system during the reaction. In addition, the catalyst having a deteriorated performance can be reactivated by adding the phosphorus-containing material to the catalyst.

Abstract: Ethylene is oxidized into ethylene oxide by bringing a feed gas mixture, which contains the ethylene, oxygen and at least 1 vol. % of carbon dioxide as well as at least 0.5 vol. ppm of a chlorine-containing burning reaction decelerator and at least 1 vol. ppm as calculated in terms of nitrogen monoxide of a nitrogen oxide and/or a precursor thereof, into contact with a catalyst which carries silver and as a practically sole alkali metal, rubidium at an Rb/Ag atomic ratio of 2/1000-7/1000 on a fire-resistant carrier having a specific surface area of 1 m.sup.2 /g or smaller.