Abstract: A method and an apparatus for preventing a solenoid from being heated by an exciting current. When a hydraulic cylinder is permitted to extend and retract, a controller commands a high-side driver to send a moving current to the solenoid such that a valve body of an electromagnetic valve is moved to a connection position. Subsequently, the controller commands the high side driver to send a maintaining current to the solenoid such that the valve body is maintained at the connection position. The moving current and the maintaining current are pulse waves. The duty ratio of the maintaining current is smaller than that of the moving current.

Abstract: An airbag cover has a door section on its front surface with an ornament. On a reverse side of the door section, a leg section of the ornament is inserted via an inserting hole from the front surface side of the door section of the cover. The leg section of the ornament is attached to the door section by a rivet, which penetrates an attaching hole of the leg section and a through-hole of the door section. The ornament is thereby attached to the door section, while an ornamental section of the ornament covers a head portion of the rivet on the front surface side of the door section. In another embodiment, the leg section is sewn to the door section. The ornamental section is attached to the front surface side of the door section by adhering the ornamental section to the door section in the sewing portion and the leg section. The connecting portion of the leg section is bent so that the ornamental section can be arranged to cover the sewing portion of the leg section.

Abstract: A built-in camera installed in an equipment for taking a photograph of a desired portion of an object to be photographed is positioned by (i) preparing a sensor which transmits a detection signal when it detects the object to be photographed, (ii) defining, when the detection signal varies by a predetermined value or greater, a certain portion of the object situated along the sensor axis as a particular portion of the object, (iii) determining in advance the desired portion of the object to be photographed relative to the particular portion of the object, (iv) fixing an optical axis of the built-in camera relative to the sensor axis in such a manner that the optical axis of the built-in camera is directed toward the desired portion of the object when the sensor axis is directed toward the particular portion of the object, (v) changing an orientation of the sensor axis toward the particular portion of the object, and (vi) causing the built-in camera to take a photograph of the object when the detection signal

Abstract: An air bag pad in which an ornament is disposed on a front surface of a synthetic resin pad body covers a folded air bag. The ornament is shaped like a sheet having a bonding layer provided in its rear surface so as to be capable of being bonded to the pad body easily. The ornament is used as an insert so that the pad body is insert-molded. The bonding layer is bonded to the pad body when the pad body is molded.

Abstract: A radiation scanning mechanism is capable of increasing an observable range by eliminating a restriction on a scannable range of a conventional scanning mechanism for a radiation TV set for scanning an observation object by a directional radiation detector to display the distribution state of a radioactive material as an image. In the radiation scanning mechanism, an inner frame having a rotary shaft provided with a directional gamma-ray detector is attached to an outer frame having a rotary shaft so that the rotary shaft of the inner frame may perpendicularly and rotatably intersect the rotary shaft of the outer frame, and the rotary shaft of tile outer frame is rotatably supported by an outer frame support base.

Abstract: In the precision angular displacement mechanism of an optical record and playback apparatus, the elasticity coefficient of the supporting component is kept from fluctuating caused by changes in temperature and the fatigue strength is increased. This is accomplished by making the support component of the moving section a flat metal spring. The support component of the moving section is attached with a reflecting mirror. In addition, by forming the moving section so that the position of its gravity center is located near the center of the flat metal spring, it is possible to prevent secondary resonance and torque resonance. Finally, an assembly method is disclosed that makes such a precision angular displacement mechanism easy to assemble.

Abstract: An electronic musical instrument includes a first tone generator for generating a musical tone in response to each depression of key on an accompaniment keyboard and a second tone generator for generating a musical tone in accordance with the musical performance data read from the memory. In a specific mode, the player can cause the first tone generator to generate a musical tone through the accompaniment keyboard with the accompaniment being automatically played. In a mode for recording an accompaniment of a music into the memory in a step manner, a chord is detected from keys depressed on the accompaniment keyboard, and data representative of the detected chord is written into the memory together with data representative of a note-length designated by note-length selection switches. In a mode for recording an accompaniment in real time, each time keys are depressed, the chord data of the depressed keys is written into the memory together with the contents of a tempo clock counter.

Abstract: Now is provided a new sustained release drug preparation comprising such an inclusion complex of a medical compound with a hydrophobic cyclodextrin derivative, e.g. ethylated cyclodextrins, which sustains or retards the dissolution and release of the medical compound at a controlled rate from the inclusion complex and hence from the drug preparation containing the inclusion complex, so as to maintain the concentration of the medical compound in blood at an effective level for prolonged time. This drug preparation may further contain a second type of an inclusion complex of the medical compound with a hydrophilic cyclodextrin or hydrophilic cyclodextrin derivative, in mixture with the first type of the inclusion complex of the medical compound with a hydrophobic cyclodextrin derivative, to maintain the controlled release of the medical compound from the drug.

Abstract: A channel selection apparatus having a double superhet tuner section (15) for converting one of a plurality of television channels contained in an input signal to a fixedly predetermined channel, includes an AFC circuit (11) for producing a frequency control voltage to execute closed-loop frequency control of the second local oscillator (5) of the tuner section while an AFC switch (16) is set in a first condition, whereas when the AFC switch is set in a second condition, a fixed frequency control voltage is applied to the second local oscillator and the frequency control voltage is applied to adjust the oscillation frequency of the first local oscillator (2) of the tuner section such as to compensate for any offset in the transmission frequency of a currently selected channel.

Abstract: In an amplifier for a high frequency signal used to amplify a signal having a high frequency in a television tuner, a receiver for satellite broadcasting, and the like, at least two stages of dc-coupled grounded-emitter type amplifiers (Q.sub.1, Q.sub.2) are configured in an integrated circuit, a resistor (R.sub.13) is connected between an emitter of the grounded-emitter amplifier (Q.sub.2) in the second stage and the grounding, a terminal for connecting an external device is disposed to be connected via a bonding wire to the emitter of the grounded-emitter amplifier (Q.sub.2) in the second stage, and a filter circuit (11) including an inductance of the bonding wire and developing a low impedance for a particular frequency is disposed between the terminal and the external grounding.

Abstract: A process for preparing tetrahydrofuran which comprises steps of;(i) subjecting 1,4-butanediol to dehydration reaction, and(ii) subjecting the reaction product obtained from the dehydration reaction in step (i) to extractive distillation, while supplying 1,4-butanediol as the extraction solvent to the system.

Abstract: A water repellent gypsum composition comprising a gypsum, and a paraffin emulsion prepared by emulsifying (a) paraffin hydrocarbon having a melting point of 40.degree.-80.degree. C and (b) an oxidized paraffin having an acid value of 10-70 at a ratio of from 97:3 to 50:50 by weight, respectively, in the presence of a water soluble alkali compound. Optionally, a polymer emulsion or solution may be added.

Abstract: A fuel injection pump for an internal combustion engine wherein a plunger is mounted in a barrel for sliding axial movement and rotation about its own axis, and the barrel is formed therein with a suction port and an outlet port. A metering groove is formed in the plunger and maintained in communication with a top of the plunger through a bore formed in the plunger, so that a desired amount of metered fuel can be delivered to the engine according to the load applied to the engine by varying the area and the time at which the metering groove is brought into communication with the outlet port, thereby varying the amount of fuel outflow. A pulsation control chamber of a greater sectional area is formed in the fuel passageway between a discharge valve of the pump and a fuel valve so as to intensify and prolong the duration of throbs of a pulsating current of fuel moved through the pulsation control chamber as it is delivered by pumping.