摘要:
A composite unit including metal and resin wherein a metal member and a resin member are formed integrally. A seal film made of resin or rubber having high affinity to metal and characterized by flexibility is interposed between contact surfaces of the metal member and the resin member. The seal film is formed of a dispersion having as its main component a copolymer of alkyl methacrylate-alkyl acrylate. The metal member is formed of an Fe group material and the resin member is formed of polyamide resin. The seal film, after being coated on the outer surface of the metal member as a liquid material is embedded in the resin member by insert-molding resin. The metal member is formed to provide a bracket of a starter motor and the resin member to provide a brush holder. A seal member made of rubber is baked onto the contact surfaces between the bracket and the brush holder, and the seal member is embedded in the brush holder made of resin.
摘要:
A light receiving element of a rangefinding device, for example for use in a camera, comprises a photoconversion light receiving element of which the light receiving surface is provided with a thin saw-toothed masking layer of aluminum directly deposited thereon by vacuum evaporation.
摘要:
A platinum wire (2) is wound in the form of coil. An outer surface of the coiled wire (2) is overcoated with a glass member (4). The coiled wire (2) is welded to supporting member (3). An exothermic resistor (1; 1A, 1B) comprised the coiled wire (12), the glass member (4) and the supporting member (3), and has no bobbin therein. Such an exothermic resistor (1; 1A, 1B) free from a bobbin is used as a hot wire element (1A) and a cold wire element (1B) in a hot wire air flow meter. The quantity of heat generated on the coiled wire (2) hardly transmit through the supporting member (3) and is carried away almost through air. The transient response characteristics under sudden change of an amount of air flow can be improved.
摘要:
A self-oscillating vibrator exciting circuit utilizing a drive transistor that operates in a switching mode. The ON-period of the transistor is determined by base/emitter inductance and capacitance and base/collector capacitance, while the OFF-period of the transistor is determined by collector/emitter inductance and capacitance. The vibrator is connected between transistor collector and emitter, and the ON-period frequency of the transistor is set in the neighborhood of the resonance frequency of the vibrator so that the vibrator exciting circuit oscillates generally at the resonance frequency of the vibrator.
摘要:
An inventive apparatus for molding a toothed pulley is equipped with an upper plate, a lower plate, and a punch attached to the bottom surface of the upper plate for vertical movement, in which a die holder is provided on the lower plate, and a plurality of dies, formed to include tooth molds having different, increasing tooth heights from one die to the next, are arranged vertically in the holder.
摘要:
Voltage or current or power supplied to the piezo-electric vibrator of an ultrasonic nebulizer is sensed and used as negative feedback to stabilize oscillation in the oscillator driving circuit.
摘要:
A composition comprising a poly(phenylene sulfide) resin powder and an aluminum oxide powder of colloidal size. The composition is useful as a powder coating composition. The composition exhibits improved adhesion to a substrate, even in hot water.
摘要:
A new type of engine, which incorporates rotors each equipped with a plurality of vanes and has a volume of a portion necessary for constant pressure heating expansion turned into a volume of an air motor side, is composed by functionally combining vane rotary air compressors and vane rotary air motors. More particularly, there is an engine conception mainly intended for vehicles of solving, without reducing the engine efficiency, problems concerning complete combustion and prevention of nitric oxide production, which have been generally considered it difficult to realize by reciprocating engines.
摘要:
An optical fiber coupler in which damage to a pumping light source can be suppressed even if signal light leaks and an optical fiber amplifier using the optical fiber coupler are provided. An optical fiber coupler includes: a first optical fiber having a core and a clad coating the core; a second optical fiber having a core; and a fusion-drawn portion formed by arranging the first optical fiber and the second optical fiber so that their longitudinal directions are in the same direction and fusing the clad of the first optical fiber and the core of the second optical fiber. The clad of the first optical fiber has a larger refractive index than the core of the second optical fiber.
摘要:
In a transport device, a first speed control unit controls a rotating speed of a first roller driving unit to reach a first target speed, and a second speed control unit controls a rotating speed of a second roller driving unit to reach a second target speed. The second speed control unit is arranged to perform, when a print medium is transported by both a first transport roller unit and a second transport roller unit, a follower control having a response sensibility to speed fluctuations in a predetermined frequency region of a control system, which is smaller than a response sensibility when the print medium is transported by the second transport roller unit solely.