Abstract: An ignition coil assembly for an internal combustion engine includes a primary coil, a secondary coil, at least one bobbin, a core, a first resin member and a casing. The primary coil and said secondary coil are wound on the bobbin. The core has core elements with a gap there-between through which the primary and secondary coils are magnetically coupled to one each other. The casing accommodates the primary and secondary coils, the bobbin and the core. And the first resin member covers a part of the core elements, the part which are confronted with said secondary coil, and the first resin member is accommodated in the casing.

Abstract: An ignition coil device for an internal combustion engine comprising: a plurality of iron cores; a plurality of ignition coils having a plurality of primary coils provided around said plurality of iron cores and a plurality of secondary coils magnetically-coupled with said plurality of primary coils through the plurality of iron cores; a case accommodating the plurality of iron cores and the plurality of ignition coils; and a plurality of control units accommodated in said case of which number is equal to the number of the plurality of ignition coils.

Abstract: An electronic circuit equipment including a substantially box-shaped case main body (10) for defining a sealed interior space therein and an electronic circuit board (11) having a plurality of electronic components (12) thereon. The case main body (10) comprises a case body (13) and a flat plate-shaped lid (17) positioned properly with respect to the case body (13) to seal the interior space. A vent hole (20) is formed in the bottom wall of the case body (13) for communicating the interior of the case body (13) with ambient atmosphere. A cover member is attached to the case body (13) to cover the vent hole hermetically. By using a cover member, the interior space of the case body (13) is sealed for protecting electronic components (12) on the electronic circuit board (11) from moisture and rainwater and, for absorbing a pressure fluctuation therein. A mounting flange extends from the case body and surrounds the vent hole. The cover member is a flexible diaphragm with a circumferential bulge.

Abstract: Herein disclosed are a tetravinylpyrazine compound which has high light-emitting efficiency and thermal stability and which is represented by the following general formula (1): ##STR1## wherein R represents an aromatic ring or a heterocyclic ring; X represents a hydrogen atom, an aliphatic hydrocarbon group, an alicyclic hydrocarbon group, an aromatic hydrocarbon group, a halogen atom, a hydroxyl group, an alkoxy group, a carboxyl group, an alkoxycarbonyl group, an acylamino group, a dialkylamino group, a nitro group, an acyloxy group or an acyloxycarbonyl group; a method for preparing the tetravinylpyrazine; and electroluminescent elements and non-linear optical materials using the pyrazine compound.

Abstract: Herein disclosed are organic thin film EL element having layer structures each of which comprises at least one organic thin film sandwiched between two electrodes, at least one of which is a metal thin film or one of which is a metal thin film and the other of which is a transparent conductive inorganic thin film, and an optional thin film of an inorganic semiconductor positioned between the transparent conductive thin film and the organic thin film, wherein an interfacial layer is fromed between the organic thin film and the metal thin film adjacent to the organic thin film by treating the organic thin film and/or the metal thin film with an organic phosphorus atom-containing compound; and/or wherein an interfacial layer is formed between the organic thin film and the inorganic thin film adjacent to the inorganic thin film by treating the organic thin film and/or the inorganic thin film with a silane-coupling agent.

Abstract: An electrode for an ignition distributor of an internal combustion engine is disclosed which is made of a copper-based sintered alloy. The alloy contains a copper matrix, and grains of Al.sub.2 O.sub.3 having an average grain size of 10 to 100 .mu.m. The Al.sub.2 O.sub.3 grains are dispersed uniformly in the copper matrix at a ratio of from 45 to 60 percent by surface area as measured in an arbitrary cross-section. The electrode of this construction exhibits very low capacitive-discharge current peaks and starting voltages, and hence the generation of radio wave noise can be substantially eliminated.

Abstract: A Hall effect type sensor comprises a magnet and a magnetic flux guide which cooperate to form a magnetic circuit and a Hall IC disposed in the magnetic circuit wherein these elements are fixed to a frame through holding members so that the magnetic flux guide and the Hall IC are placed at correct positions on the frame.

Abstract: This invention relates to an injection type thin film luminescence element having a high luminance and a high stability characterized in having two electrode layers at least one of which is transparent or translucent and having between these two electrode layers a luminescence function-manifesting layer comprising a laminated layer of a p-type or n-type inorganic semiconductor thin film layer and an organic compound thin film layer.

Abstract: A cylinder identification apparatus for a multi-cylinder internal combustion engine. The apparatus includes the following units. A reference signal generator that senses the rotation of an engine crankshaft and generates a reference signal indicating each time the crankshaft is at a prescribed rotational angle. An identification signal generator senses the rotation of the engine camshaft or other member coupled to and rotating at 1/2 the speed of the crankshaft and generates a cylinder identification signal having a different form for different cylinders of the engine. A control unit identifies each cylinder of the engine based on the form of the cylinder identification signal.

Abstract: A Hall-effect magnetic sensor arrangement comprising Hall-effect IC, an anti-surge electric source protective circuit electrically connected to the Hall-effect IC, and a substrate for mounting thereon the Hall-effect IC and the protective circuit. The Hall-effect IC as well as the protective circuit mounted on the substrate are in the form of a hybrid IC.

Abstract: A manufacturing method for a molded resin article includes an injection step of injecting a resin molding material into a mold, a compression step of compressing a prescribed portion of the resin molding material, a cooling step of solidifying the resin molding material by cooling while maintaining pressure on the prescribed portion, and a removal step of removing the resulting molded resin article from the mold. The compression prevents the formation of voids in the compressed portion and increases the dielectric strength thereof. In a preferred embodiment, the molded article is a distributor rotor for an internal combustion engine.

Abstract: A distributor for an internal combustion engine which exhibits a high suppressing effect of noise radio waves even by measurement in accordance with quasi-peak detection and assures stabilized discharge in a discharge gap. The distributor comprises a rotor electrode provided on a distributor rotor secured to a rotary shaft which is connected to be rotated in a synchronized relationship by rotation of a crankshaft of the engine. A plurality of side electrodes are disposed along a locus of rotation of the distributor rotor electrode with a discharge gap left therebetween. A dielectric layer of aluminum oxide or silicon carbide is formed at a location of one or each of a pair of opposite faces of the distributor rotor electrode adjacent and end opposing to the side electrode. A method of producing such distributor rotor electrode with a dielectric layer is also disclosed.

Abstract: A Hall effect type sensor comprises a magnet and a magnetic flux guide which cooperate to form a magnetic circuit and a Hall IC disposed in the magnetic circuit wherein these elements are fixed to a frame through holding members so that the magnetic flux guide and the Hall IC are placed at correct positions on the frame.

Abstract: A distributor for internal combustion engine having a mica layer fixedly provided, or a mica plate bonded by an adhesive agent, at least at one face of a discharging section of a distributor rotor electrode provided in a distributor rotor, the mica layer containing mica material dispersed in an organic resin. The mica layer or mica plate having a large anti-discharge characteristic can suppress generation of noise radio waves resulting from a discharge.

Abstract: A signal generator has a Hall-effect sensor and a magnet which are disposed inside a distributor housing. A vane which is secured to a distributor shaft passes through a gap between the Hall-effect sensor and the magnet when the distributor shaft rotates. An ignition coil is disposed inside the distributor housing in a location such that the magnetic field which it generates combines subtractively with the magnetic field generated by the magnet in the vicinity of the Hall-effect sensor. Magnetic by-passes are disposed inside the housing to cause leakage flux from the ignition coil to by-pass the Hall-effect sensor.

Abstract: A Hall-effect magnetic sensor arrangement comprises a sensor element utilizing the Hall-effect and disposed in a magnetic circuit including a magnetic pole unit in an opposing relationship with respect to the magnetic pole unit with a predetermined distance therebetween, a sensor frame surrounding the sensor element and having a cave defined at the opposite side of the magnetic pole unit with respect to the sensor element and at a side perpendicular to a magnetic path and a soft filler material filled in the cave for protecting the sensor element. The sensor arrangement comprises a nonmagnetic thin plate member disposed at the side of the sensor element opposite to the magnetic pole unit and supported at its outer edge by the sensor frame for preventing the filler material to flow out from the cave.

Abstract: This invention relates to an ignition distributor for an internal combustion engine and more specifically relates to a novel reluctor included in an ignition distributor for discriminating between cylinders of an engine. The reluctor has an elongated shape and is arranged relative to the rotating shaft of an ignition distributor so that the gravity center of the reluctor is located exactly on the rotational axis of the shaft. This arrangement enables the rotational movement of the shaft to be concentrated, so that the wear to which the bearings supporting the shaft is subjected is significantly reduced. The reluctor is attached to the governor base of an ignition distributor without any rivets by virtue of the novel configuration thereof, so that a reduction in the number of parts can be achieved, together with reduction in the total production cost.

Abstract: An ignition distributor for an internal combustion engine has a cylindrical distributor rotor of synthetic resin, rotated synchronously with the revolution of the engine, and a rotor electrode radially and outwardly extending from the central portion on the upper surface of the rotor. A plurality of circumferential electrodes are disposed in the rotating locus of the rotor and are separated from the rotor electrode by a discharge gap. The rotor electrode has the shape of letter T a vertical portion of which is fixed to the distributor rotor and a horizontal portion of which opposes to the circumferential electrode, being in the shape of a circular segment.

Abstract: The speed of forming a film of a hydrogenated amorphous silicon (a-Si:H) can be increased by controlling the amount of a supplied energy in relation to the film-forming speed. Application of this technique to the production of a solar cell enables a hydrogenated amorphous silicon solar cell (a-Si:H cell) having a high photoelectric conversion efficiency to be produced at high speeds. The aforesaid controlling procedure comprises adjusting the amount (KJ/g-Si.sub.2 H.sub.6) of an energy to be supplied to a film-forming speed depends mainly upon the flow rate of the gas and is not substantially affected by the amount of the energy.

Abstract: A distributor for suppressing radio frequency interference (RFI) in the ignition system of an internal combustion engine including a rotor electrode having adhered thereto on at least one of its surfaces a wire net combined with a dielectric material and a contact electrode making contact with the rotor electrode for supplying a high voltage from an ignition coil to the rotor electrode. Various types of dielectric materials and wire nets are used. Also, a plurality of wire net, including the dielectric material, can be utilized to prevent the exfoliation of the dielectric material from the rotor electrode.