Abstract: There is provided a display device stand used with a long table used in a TV conference, the display device stand allowing each of attendees seated along the long table to accurately see the contents displayed on the display screen of the display device. A display device stand 1 for supporting a display device 30 includes a base 2, a column 12 standing on the base 2, and a supporting member 20 provided at the column 12 and supporting the display device 30. The column 12 stands at a position on the opposite side of the center of the base 2 from the display screen of the supported display device 30. A weight 10 is removably attached to the base 2. The mass of the weight 10 added to the base 2 enhances the stability of the base 2, so that the display device 30 can be supported in a stable manner.

Abstract: A motor includes a rotor portion including a shaft and a rotor magnet rotatable about a center axis, an armature arranged opposite to the rotor magnet to generate a torque therebetween, a circuit board arranged below the armature in an axial direction substantially parallel to the center axis and including a control circuit controlling rotation of the rotor portion, and a base portion including a bearing holder which supports the armature on its outer side surface and the shaft on its inner side surface via a bearing member. The armature is pressed against the bearing holder in the axial direction with an elastic member.

Abstract: A semiconductor device having a multilayer structure, each layer including: a dummy pattern for ensuring a flatness thereof; a pad area in which a bonding pad is formed; an input-output circuit area in which an input-output circuit is formed, the input-output circuit area being adjacent to the pad area in plan view; and a dummy pattern confined area for forbidding an arrangement of the dummy pattern in every layer included in the semiconductor device, the dummy pattern confined area being provided between the pad area and the input-output circuit area in plan view.

Abstract: In an axial flow fan, a line extending from a center axis and passing a corner where a following edge and a radially outer edge of a blade of an impeller meet is arranged forwardly in a rotational direction from an another corner where a leading edge of the blade and a radially outer surface of a hub meet. Furthermore, a camber ratio of the blade, which is minimum at a joint with the hub across the blade, monotonically increases to be maximum at the radially outer edge of the blade.

Abstract: An axial fan motor comprising: a fan having a rotating shaft and composed of a hub and a plurality of vanes provided around the hub, the fan rotating to generate an air flow; a stator substrate set comprising a stator core, which drives the fan, an insulator, and a substrate; and a venturi having a sleeve, into an inner peripheral side of which a bearing is inserted to support the rotating shaft and to an outer peripheral side of which the stator core is fixed, the venturi being formed on one side thereof with an air suction opening and on the other side thereof with an air discharge mouth, wherein a space is provided between the stator core and the sleeve.

Abstract: A coil antenna having a magnetic core and a wire wound around the magnetic core. The magnetic core is flexible and bendable and is made of a mixture including soft magnetic powder and an organic binder agent. The soft magnetic powder comprises a plurality of particles, each of which is coated with an insulator layer which is made of an oxide layer.

Abstract: A fluid heater is configured by passing a cartridge heater H covered by a fluororesin, through a casing 1. The casing 1 has: a fluororesin-made case body 4 which incorporates the cartridge heater H; fluororesin-made lid bodies 5 which are attached to both ends of the case body involving sealing portions S, respectively; fluid supplying/discharging portions 31 which are formed in the lid bodies 5, and through which a fluid is introduced and discharged; and fluororesin-made union nuts 6 which are externally fitted to both ends of the case body 4 and screwed to the lid bodies 5. Sealing portions S formed between the case body 4 and the lid bodies 5 are closely contacted by fastening the union nuts 6 to the lid bodies 5. A lead-out portion 34 for the cartridge heater H is formed in at least one of the paired lid bodies 5.

Abstract: A coil antenna is disclosed comprising a magnetic core and a wire wound around the magnetic core. The magnetic core is made of a mixture comprising soft magnetic powder and an organic binder agent. The magnetic core has a specific complex permeability whose real part ?? is 20 or more over a frequency range of 10 MHz or less and whose imaginary part ?? is 10 or more over a frequency range of 10 MHz or more so that the magnetic core is also servable as a noise suppressor against high-frequency noise.

Abstract: A coil antenna is disclosed comprising a magnetic core and a wire wound around the magnetic core. The magnetic core is made of a mixture comprising soft magnetic powder and an organic binder agent. The magnetic core has a specific complex permeability whose real part ?? is 20 or more over a frequency range of 10 MHz or less and whose imaginary part ?? is 10 or more over a frequency range of 10 MHz or more so that the magnetic core is also servable as a noise suppressor against high-frequency noise.

Abstract: A coil antenna is disclosed comprising a magnetic core and a wire wound around the magnetic core. The magnetic core is flexible and bendable and is made of a mixture comprising soft magnetic powder and an organic binder agent. The soft magnetic powder comprises a plurality of particles each of which is coated with an insulator layer.

Abstract: A crude work having a cylindrical boss formed integrally with a base plate is processed to a final product by a press work without using additional machining. An inner diameter of the boss is enlarged by a punch, and at the same time an outer diameter of the boss is shrunk by an outer die, while the work is supported on a cushion ring to which a force against the movement of the punch and the outer die is applied. Some of the material constituting the cylindrical boss is squeezed, and a bulge is formed at a foot of the cylindrical boss out of the material squeezed. Since the bulge is fromed in a confined space in the die structure, no crack or defect develops in or on the bulge. The bulge is further compressed by a press work to form a flat flange out of the bulge. The cylindrical boss having the flange formed integrally therewith is used as a center boss for holding a bearing of a rotary machine.

Abstract: An apparatus for determining whether or not an air-fuel ratio sensor, which is arranged in an exhaust system of an internal combustion engine to detect the air-fuel ratio of exhaust gas, is activated. The apparatus has a heater for heating the air-fuel ratio sensor, a detector for detecting whether or not the air-fuel ratio sensor has reached a half-activated state to start changing the output thereof after the start of the engine, a unit for integrating power supplied to the heater from the start of the engine until the air-fuel ratio sensor reaches the half-activated state, a unit for estimating, according to the integrated power, the power to be supplied to the heater to bring the air-fuel ratio sensor to a full-activated state, and a unit for determining that the air-fuel ratio sensor is in the full-activated state once the estimated power has completely been supplied to the heater.

Abstract: An apparatus for controlling the air-fuel ratio in an internal combustion engine, which quickly responds to a deviation between the actual air-fuel ratio and the target air-fuel ratio in the engine and results in immediate purification of the exhaust gas discharged from the engine.

Abstract: In a fuel blending ratio detecting method, a first blending ratio of the methanol in the fuel supplied to an internal combustion engine is detected by a blending ratio sensor; an air/fuel ratio feedback compensation coefficient computed on the basis of an output of an O.sub.2 sensor is used to compute a feedback learned value, and the current blending ratio compensation coefficient is multiplied by this value to compute the next blending ratio compensation coefficient so as to obtain a second blending ratio; the current blending ratio compensation coefficient is multiplied by a peak mean value of the computed feedback compensation coefficient to compute the next blending ratio compensation coefficient so as to obtain a third blending ratio; and the first, second or third blending ratio is selected according to the operating conditions of the internal combustion engine.

Abstract: A method includes a step of calculating an estimated blending ratio of a mixed fuel supplied to a combustion chamber of an internal combustion engine and a following equation is effected in this step to derive the estimated blending ratio:B(t)=k*B(t-1)+(1-k)*Bs(t-n)where t is an integer,n is a first delay coefficient set according to an operation parameter and a type of the engine,B(t-1) is an estimated blending ratio derived in the preceding cycle,Bs(t-n) is a blending ratio obtained by use of said blending ratio sensor in a cycle which was effected n cycles before the current cycle, andk is a second delay coefficient set according to a operation parameter and the type of the engine.

Abstract: In a fuel blending ratio detecting method, a first blending ratio of the methanol in the fuel supplied to an internal combustion engine is detected by a blending ratio sensor; an air/fuel ratio feedback compensation coefficient computed on the basis of an output of an O.sub.2 sensor is used to compute a feedback learned value, and the current blending ratio compensation coefficient is multiplied by this value to compute the next blending ratio compensation coefficient so as to obtain a second blending ratio; the current blending ratio compensation coefficient is multiplied by a peak mean value of the computed feedback compensation coefficient to compute the next blending ratio compensation coefficient so as to obtain a third blending ratio; and the first, second or third blending ratio is selected according to the operating conditions of the internal combustion engine.

Abstract: A fuel blending ratio detecting method is provided which includes a feedback computing compensation coefficient K.sub.FB on the basis of an air/fuel ratio responsive output V.sub.o of an O.sub.2 sensor, computing a feedback learned value K.sub.LRN on the basis of the feedback compensation coefficient K.sub.FB at intervals of a predetermined period, and multiplying the current blending ratio compensation coefficient K.sub.B by this feedback learned value K.sub.LRN to compute the next blending ratio compensation coefficient K.sub.B. Thus, the quantity of fuel supplied to the internal combustion engine can be always controlled accurately on the basis of the computed blending ratio compensation coefficient.

Abstract: A fuel blending ratio detecting method is provided wherein a feedback compensation coefficient K.sub.FB is computed on the basis of an air/fuel ratio responsive output V.sub.o of an O.sub.2 sensor, and a current blending ratio compensation coefficient K.sub.B is multiplied by a peak mean value K.sub.PEAK of the current and preceding peak values of the computed feedback compensation coefficient K.sub.FB to compute the next blending ratio compensation coefficient K.sub.B. Thus, the quantity of fuel supplied to the internal combustion engine can be always controlled accurately on the basis of the computed blending ratio compensation coefficient.

Abstract: A fuel blending ratio detecting method computes a control blending ratio on the basis of blending ratio information generated from a blending ratio sensor or air/fuel ratio information generated from an O.sub.2 sensor, and when the engine is stopped, the control blending ratio detected at that time is stored in a backup memory as a memory blending ratio. At the time of re-starting the engine, the memory blending ratio can be used as the control blending ratio B for a predetermined limited period.

Abstract: An air-fuel ratio feedback control method for a multi-fuel internal combustion engine using a dual O.sub.2 sensor system is provided, in which the concentration of oxygen in exhaust gas on the upstream side of an exhaust gas purifier is detected, a value corresponding to the detected oxygen concentration is compared with a first target value, and the air-fuel ratio is feedback-controlled in accordance with the result of the comparison. The mixture ratio of at least two fuels is detected, and a second target value is set in accordance with the detected fuel mixture ratio. On the other hand, the concentration of oxygen in the exhaust gas on the downstream side of the exhaust gas purifier is detected, and a value corresponding to the detected downstream-side oxygen concentration is obtained. The first target value is corrected in accordance with the difference between the obtained value and the second target value.