Abstract: A compact solenoid including a coil and a frame located outside the coil for constituting a magnetic circuit. The frame includes four bars extending in parallel to the axial direction of the coil and located proximate to the outer circumferential face of the coil. Each of the bars has a generally triangular cross section. The four bars are disposed to have a mutual positional relationship corresponding to vertexes of a square.

Abstract: An in-cylinder pressure detection device for an internal combustion engine, which is capable of calculating a hysteresis amount properly to thereby detect in-cylinder pressure with high accuracy. The in-cylinder pressure detection device comprises an in-cylinder pressure sensor that detects in-cylinder pressure as a detected in-cylinder pressure. The in-cylinder pressure detection device estimates an in-cylinder pressure generated when combustion is not performed in the cylinder, as a motoring pressure, calculates a hysteresis amount indicative of a difference between the detected in-cylinder pressure and an actual in-cylinder pressure, based on the detected in-cylinder pressure and the motoring pressure obtained during the exhaust stroke of the engine, and corrects the detected in-cylinder pressure based on the calculated hysteresis amount.

Abstract: In an engine wherein an upper end portion of a casing of an oil strainer disposed within an oil pan is supported on a crank case side and a suction port is formed in a lower end of the casing whose lower portion is formed in a funnel shape, the oil strainer is supported firmly while preventing an increase in weight and size of the engine and an increase in the number of parts. A plurality of vertically long plate-like strainer support portions are integrally formed on a lower side face of a casing of an oil strainer for abutting against and for being supported by the bottom of an oil pan.

Abstract: The defect marking method comprises the steps of: installing a surface defect tester to detect surface flaw and a marker device to apply marking at defect position, in a continuous processing line of steel sheet; detecting the surface flaw on the steel sheet using the surface defect tester; determining defect name, defect grade, defect length, and defect position in the width direction of the steel sheet, on the basis of thus detected flaw information, further identifying the defect in terms of harmful defect, injudgicable defect, and harmless defect; applying tracking of the defect position for each of the harmful defect and the injudgicable defect; and applying marking to the defect position. The defect marking device comprises a defect inspection means having plurality of light-receiving parts and a signal processing section, and a marking means.

Abstract: A defect marking device includes a flaw inspection device which has a plurality of light-receiving parts that identify reflected lights coming from an inspection plane of a metal strip under two or more of optical conditions different from each other; a signal processing section that judges the presence/absence of surface flaw on the inspection plane based on a combination of reflected light components identified under these optical conditions different from each other; and a marking device which applies marking that indicates information relating to the flaw on the surface of the metal strip.

Abstract: The compact solenoid of the present invention conduces to further miniaturization of a compact solenoid. The compact solenoid includes a coil and a frame located outside the coil for constituting a magnetic circuit. The frame includes four bars extending in parallel to the axial direction of the coil and located proximate to the outer circumferential face of the coil. Each of the bars has a generally triangular cross section. The four bars are disposed to have a mutual positional relationship corresponding to vertexes of a square.

Abstract: The invention is directed at a device that reduces the size of an engine in the direction along the axis of a crankshaft. More specifically, it relates to an engine starting system in which a part of a starting power transmission gear train is provided between one end portion of a crankshaft rotatably borne on a crankcase and a starter motor mounted to the crankcase is covered from the outside by an accessory coupled to and operated in conjunction with the crankshaft.

Abstract: A lubricating structure for an engine includes a crankcase for supporting a crankshaft formed from a pair of case halves coupled to each other along a mating plane extending along a plane perpendicular to an axial line of the crankshaft. An oil reservoir in a lower portion of the crankcase extends across the mating plane. A pump chamber of an oil pump is formed between the two case halves across the mating plane. Lubricant is drawn from the oil reservoir into the oil pump using a structure which can achieve reduction of the number of parts and improve the ease of assembly. The structure includes a path groove, which forms an oil suction path for interconnecting the oil pump and the oil reservoir, formed in at least one of the two case halves.

Abstract: In an engine for a motorcycle, a main shaft is supported rotatably by first and second support walls of a lower case which constitutes a part of a crank case. The center distance between the crank shaft and the main shaft is to be shortened while attaining a reduction in the number of parts and the number of assembling steps. A first bearing hole is formed in a first support wall for fitting therein and holding a first bearing which is mounted on one end of the main shaft. A second bearing hole is formed in a second support wall which permits the main shaft to be inserted therein from an opposite end side of the main shaft until one end of the main shaft is fitted in the first bearing. A second bearing is fitted and held in the second bearing hole so as to be fitted on the main shaft from the opposite end side of the main shaft after fitting of one end of the main shaft into the first bearing.

Abstract: In an engine wherein an upper end portion of a casing of an oil strainer disposed within an oil pan is supported on a crank case side and a suction port is formed in a lower end of the casing whose lower portion is formed in a funnel shape, the oil strainer is supported firmly while preventing an increase in weight and size of the engine and an increase in the number of parts. A plurality of vertically long plate-like strainer support portions are integrally formed on a lower side face of a casing of an oil strainer for abutting against and for being supported by the bottom of an oil pan.

Abstract: In an engine starting unit, a gear switching clutch is fitted on one end of a main shaft, a power transmission gear train including a clutch gear rotating together with an input member of the gear switching clutch is provided between one end of a crankshaft and the input member, a kick start gear train is arranged between a drive gear group and the clutch gear, and a one-way starter clutch is arranged on the crankshaft between the drive gear group and the clutch gear.

Abstract: The invention is directed at a device that reduces the size of an engine in the direction along the axis of a crankshaft. More specifically, it relates to an engine starting system in which a part of a starting power transmission gear train is provided between one end portion of a crankshaft rotatably borne on a crankcase and a starter motor mounted to the crankcase is covered from the outside by an accessory coupled to and operated in conjunction with the crankshaft.

Abstract: A lubricating structure for an engine includes a crankcase for supporting a crankshaft formed from a pair of case halves coupled to each other along a mating plane extending along a plane perpendicular to an axial line of the crankshaft. An oil reservoir in a lower portion of the crankcase extends across the mating plane. A pump chamber of an oil pump is formed between the two case halves across the mating plane. Lubricant is drawn from the oil reservoir into the oil pump using a structure which can achieve reduction of the number of parts and improve the ease of assembly. The structure includes a path groove, which forms an oil suction path for interconnecting the oil pump and the oil reservoir, formed in at least one of the two case halves.

Abstract: In an engine starting unit, a gear switching clutch is fitted on one end of a main shaft, a power transmission gear train including a clutch gear rotating together with an input member of the gear switching clutch is provided between one end of a crankshaft and the input member, a kick start gear train is arranged between a drive gear group and the clutch gear, and a one-way starter clutch is arranged on the crankshaft between the drive gear group and the clutch gear.

Abstract: An electronic musical instrument A automatically performs a music piece by replaying music piece data. When music piece data stored in an external storage device 36 or music piece data taken in via an interface circuit 51 is stored in an internal storage device 35, filenames of copyrighted music piece data among the above-described music piece data are automatically changed. When music piece data stored in a ROM 33 or the internal storage device 35 is copied into the external storage device 36 or is outputted to the outside via the interface circuit 51, the copy and the output of copyrighted music piece data among the above-described music piece data is prohibited. When an external device 52 requests the electronic musical instrument A to transmit music piece data stored in the internal storage device 35 or the like, filenames of copyrighted music piece data among the above-described music piece data are protected from being displayed on the external device 52.

Abstract: The defect marking method comprises the steps of: installing a surface defect tester to detect surface flaw and a marker device to apply marking at defect position, in a continuous processing line of steel sheet; detecting the surface flaw on the steel sheet using the surface defect tester; determining defect name, defect grade, defect length, and defect position in the width direction of the steel sheet, on the basis of thus detected flaw information, further identifying the defect in terms of harmful defect, injudgicable defect, and harmless defect; applying tracking of the defect position for each of the harmful defect and the injudgicable defect; and applying marking to the defect position. The defect marking device comprises a defect inspection means having plurality of light-receiving parts and a signal processing section, and a marking means.

Abstract: In an exhaust secondary air supply system including an electric air pump and a flow rate control valve disposed in an air supply passage connected to an exhaust passage of an engine, the electric air pump is first driven after the start of the engine, and the flow rate control valve is then opened after a lapse of a predetermined time. At a time after starting the driving of the electric air pump, the abnormality of the electric air pump is detected by comparing a deviation between the current before and after driving of the electric air pump with a predetermined reference value. After opening of the flow rate control valve, the abnormality of the flow rate control valve is detected by comparing the deviation between the current before and after the opening of the flow rate control valve with a predetermined reference value.

Abstract: In a rotating anode X-ray tube of this invention, a liquid metal lubricant supplied to bearing portions between a rotary member and a stationary member for instructing rotation of the rotary member is to be filled to a volume having a range of lower limit being an amount to fill bearing gaps, including helical grooves, and as an upper limit being 70% of the capacity of the interior in which the lubricant can flow, measured from the end portion of a helical groove slide bearing portion closest to the interior of a vacuum container. In the rotating anode X-ray tube, leakage of the liquid metal lubricant can be prevented, and a stable bearing operation can be maintained.

Abstract: A rotary anode type X-ray tube comprises a thin gas passageway extending from a lubricant chamber formed along the axis of a stationary structure and open at a fine gap G effective for preventing a lubricant leakage. In manufacturing the tube, a liquid metal lubricant is supplied to the lubricant chamber and to a slide bearing section, followed by assembling the tube and, then, sealing the assembled tube in a vacuum vessel. In the subsequent exhausting step, an open end of the gas passageway is allowed to face upward. The particular exhausting operation permits completely releasing to the outside the gas impregnated in the bearing-constituting members and the liquid metal lubricant, making it possible to maintain a stable bearing function.

Abstract: In a method of manufacturing a rotating anode type X-ray tube, in the step of checking the rotational balance of a rotary structure to which an anode target is fixed and correcting the rotational balance as required, the rotary structure is fitted on a stationary support jig which sprays a high-pressure gas from its interior, in place of a columnar stationary structure, to set the rotary structure upright. The rotary structure is rotated at a high speed while spraying the high-pressure gas, and the rotational balance of the rotary structure is checked. The rotational balance of a rotating unit can be checked in the air easily and at high precision, and can be adjusted directly in the outer air as required.