Abstract:
The method for producing an aldehyde or ketone compound from a corresponding primary or secondary alcohol at relatively high temperature within a short time with a high yield including a step (1) of reacting a sulfoxide compound with an activating agent to produce an activation reaction product; a step (2) of reacting the activation reaction product with a primary or secondary alcohol to produce an alkoxysulfonium salt; and a step (3) of reacting the reaction product with a base to produce an aldehyde or ketone; wherein at least one of the steps, preferably the step (1) and step (2), are carried out by using a microreactor.
Abstract:
Steering apparatus includes at least one motor for generating a steering assisting force in a direction to steer a steerable wheel, two drive circuits having respective switching elements for PWM-controlling the motor, and a controller for differentiating, between the drive circuits, a control frequency at which the switching element is switched on and off. The differentiated PWM switching timing can effectively reduce switching noise and magnetostrictive sound of the motor.
Abstract:
A process for producing a living radical polymer characterized in that a vinyl monomer is polymerized with use of an organotellurium compound represented by the formula (1) and an azo type polymerization initiator, and the living radical polymer obtainable by the process wherein R1 is C1-C8 alkyl, aryl, substituted aryl or an aromatic heterocyclic group, R2 and R3 are each a hydrogen atom or C1-C8 alkyl, and R4 is aryl, substituted aryl, an aromatic heterocyclic group, acyl, oxycarbonyl or cyano.
Abstract:
A motor driving method for a steering apparatus for applying an auxiliary steering force to a steering system with two motors. When the two motors are driven, a first one of the two motors is operated first. Thereafter, the other, second motor is driven, whereby smooth steering is effected.
Abstract:
In a child seat device, a child seat body is connected to a base while a bar disposed at the front bottom thereof is engaged with a guide member disposed at the front of the base, and the child seat body is pivotally supported on the arms standing at the rear of the base via shafts on the right and left rear sides thereof. The guide member extends forward and upward from the front of the base. The bar is movable along the guide member. In the case of a head-on collision of the car, the child seat body pivots on the shafts, so that the bar swings along the guide member to reduce the load to be applied to a passenger.
Abstract:
A seating board includes a board portion having a first surface on which a child with a small body is to be seated, and a second surface on which a child with a body larger than the small body is to be seated, which is located on a side opposite to the first surface. Clamp arms are attached to the board portion for attaching the seating board to a seat portion of a child seat. When the seating board is detached from the child seat, the child seat becomes a state suitable for a child larger than the infant. In case the seating board is disposed directly on a vehicle seat, the seating board becomes suitable for a middle size child. Thus, the seating board can be used for child occupants with various sizes.
Abstract:
In an ink tank, a main ink chamber is contiguous to a sub ink chamber containing an absorption member, and an air communication hole is formed on the top of the sub ink chamber. The absorption member holds ink pressure constant by capillary attraction of the absorption member. First, ink in the sub ink chamber is consumed with consumption of ink. When ink is consumed in a predetermined amount, air passes through the absorption member and a meniscus forming portion to form bubbles, which then move to the main ink chamber. Ink pressure is held constant by surface tension of the meniscus forming portion. Even if ink remains in a small amount, the ink leading portion makes the meniscus forming portion wet for holding ink pressure.
Abstract:
A displacement detector for enabling a precise detection of a displaced quantity of the core. The displacement detector is provided with a displaceable core, a detecting coil the inductance of which varies in response to a displaced quantity and a reference resistor, wherein a transient response voltage in case of a pulse voltage being applied to the inductance and the reference resistor is detected to enable detection of the absolute value of the inductance and thereby the change in the inductance which corresponds to the displaced quantity is detected independently of the peak value or the frequency of the pulse voltage. The displacement detector is preferably used in a torque sensor for an electric powered steering system, wherein the core of the displacement detector is formed of nonmagnetic metal material, the structure is simple, and a sensitive detection of a displaced quantity of the steering torque is possible.
Abstract:
An arrangement for compensating the thermal characteristics of a sensor including a core movable from a neutral position in two directions along a line and two detecting coils symmetrically disposed along the line with the neutral position placed at the center of symmetry, in which sensor a change in the inductance of the two detecting coils due to the movement thereof is electrically detected, the arrangement being adapted so that the numbers of wire turns in the two detecting coils are set different to compensate a mechanically produced change in the thermal characteristics of the sensor. The arrangement allows a mechanical positional difference between the detecting coils and the core due to a temperature change to be compensated and an output voltage drift due to a temperature change to be reduced, thus increasing sensor accuracy.