An indicating instrument for a vehicle includes a dial plate, a light modulation member disposed on the dial plate and a controller for controlling the light transmissivity. The light modulation member has variable light transmissivity, and the controller changes the light transmissivity according to a condition of the vehicle when operated.

A drive apparatus for driving two motors by PWM control of respective switching elements connected to the motors, whereby respective control signals are applied to the switching elements such that each commencement of a transition of one of the switching elements from the non-conducting to the conducting state coincides with the termination of a transition of the other switching element from the conducting to the non-conducting state, thereby reducing generated electrical noise, and for supplyin...

In a semiconductor pressure sensor manufacturing method of disposing an etching mask (50) at one-face (11) side of a monocrystal silicon substrate 10 in which the face-direction of the one face 11 corresponds to the (110)-face, and then carrying out anisotropic etching to form a recess portion (20) and a diaphragm (30) at the bottom surface side of the recess portion (20), the etching mask (51) is designed to have a cross-shaped opening portion (51) at which a first area extending along the <...

A semiconductor device, which is obtained by sticking an adhesive sheet 1 comprising a base material 2, an adhesive agent layer 3 formed on the base material 2 and conductor bodies 4 buried in the adhesive agent layer 3 to a semiconductor wafer, and removing the base material from the adhesive agent layer of the adhesive sheet 1. The adhesive agent layer 3 and a substrate are then aligned and the semiconductor wafer and the substrates are adhered via the adhesive agent layer 3 to thereby avoid d...

A capacitance type dynamical quantity sensor includes a semiconductor substrate, a weight portion being displaced in accordance with a dynamical quantity, a movable electrode integrated with the weight portion, and a fixed electrode facing the movable electrode. The movable electrode and the fixed electrode provide a capacitor having a capacitance. The movable electrode is movable in accordance with the dynamical quantity. The capacitance of capacitor is changed in accordance with a displacement...

A spark plug gap adjustment system is provided which is designed to adjust a spark gap between a ground electrode and a center electrode installed in a spark plug to a target value. The system determines the position of the ground electrode in a given coordinate system to calculate a target distance required to move an end of the ground electrode toward an end of the center electrode for bringing the spark gap into agreement with the target value and moves the ground electrode under pressure by ...

A collision avoidance control system for a vehicle is provided which is designed to determine a target collision avoidance deceleration required for a system vehicle equipped with this system to bring a relative speed between the system vehicle and a target object into agreement with substantially zero without a physical collision with the target object and to determine a possibility of collision with the target object as a function of the target collision avoidance deceleration. When the possib...

A transmission member that transmits urging force of a helical spring to a valve body is disposed between the valve body and the helical spring. The transmission member changes a direction of an urging force transmitted to the valve body such that the urging force is oblique to a pressure action direction X. Accordingly, when a check valve is in an open state, the valve body is pressed against a side wall and thus vibration of the valve body is inhibited. Further, when the check valve is in a cl...

A tank cap has outstanding operability when the fuel cap opens and closes a tank opening of a fuel tank. The tank cap is provided with a casing main body, a cover body provided with an handle and a torque mechanism. The torque mechanism transmits rotational torque to the casing main body when rotational torque is applied to the handle. A torque release mechanism is also disposed between the handle and a torque plate of the torque mechanism. A torque release mechanism is provided with a steel bal...

In a check valve of the present invention, when a pressure action direction of a fluid on a valve body is assumed to be X, a spring receiving surface that abuts with a seat surface that is at one end in an axial direction of the helical compression spring is made to incline with respect to a surface perpendicular to the pressure action direction X. Accordingly, an urging force of the helical compression spring on the valve body acts obliquely with respect to the pressure action direction X. Thus...