Patent application number | Description | Published |
20090064486 | METHOD OF MANUFACTURING PERMANENT-MAGNET SYNCHRONOUS MOTOR - In a combination of, for example, a rotor having eight magnetic poles and a stator having twelve slots and pulsating components of permeance, which generate a sinusoidal cogging torque having maxima of the same number as the number of poles of the rotor, pressurizing parts arranged in predetermined positions, applying a force at an outer periphery of the stator and directed inwardly cancels the pulsating components of the cogging torque. | 03-12-2009 |
20090302788 | REGENERATING BRAKING SYSTEM INCLUDING SYNCHRONOUS MOTOR WITH FIELD EXCITATION AND CONTROL METHOD THEREOF - A regenerating braking system is provided, which includes: a synchronous motor with field coil excitation including a cylindrical stator coil, an inverter electrically connected to the stator coil, a battery electrically connected to the inverter, a rotor coil provided in an internal space of the stator coil, a two-way switch electrically connected to the rotor coil, and a capacitor electrically connected to the two-way switch; and a controller, wherein when the first differential calculus of acceleration of a load on the synchronous motor becomes negative, the controller stores regenerative power regenerated in the rotor coil from the stator coil, in the capacitor through the two-way switch, and wherein the controller supplies the regenerative power stored in the capacitor to the rotor coil through the two-way switch. | 12-10-2009 |
20110047782 | METHOD OF MANUFACTURING PERMANENT-MAGNET SYNCHRONOUS MOTOR - In a combination of, for example, a rotor having eight magnetic poles and a stator having twelve slots and pulsating components of permeance, which generate a sinusoidal cogging torque having maxima of the same number as the number of poles of the rotor, pressurizing parts arranged in predetermined positions, applying a force at an outer periphery of the stator and directed inwardly cancels the pulsating components of the cogging torque. | 03-03-2011 |
20120304453 | METHOD OF MANUFACTURING PERMANENT-MAGNET SYNCHRONOUS MOTOR - In a combination of, for example, a rotor having eight magnetic poles and a stator having twelve slots and pulsating components of permeance, which generate a sinusoidal cogging torque having maxima of the same number as the number of poles of the rotor, pressurizing parts arranged in predetermined positions, applying a force at an outer periphery of the stator and directed inwardly cancels the pulsating components of the cogging torque. | 12-06-2012 |
20140354101 | ELECTRIC MOTOR - A rotor is formed with a partition wall interposed between a first magnetic body and a second magnetic body. Projections of the partition wall block gaps between salient poles of the first magnetic body and salient poles of the second magnetic body which are arranged at shifted positions when seen in an axial direction of a rotating shaft to shield a flow of air flowing in the axial direction. Notches are formed in parts other than the gaps to decrease a volume thereof and to reduce inertia thereof. | 12-04-2014 |
Patent application number | Description | Published |
20130220212 | METHOD FOR MANUFACTURING N-TYPE SiC SINGLE CRYSTAL - A method for manufacturing an n-type SiC single crystal, enables the suppression of the variation in nitrogen concentration among a plurality of n-type SiC single crystal ingots manufactured. A method includes the steps of: providing a manufacturing apparatus ( | 08-29-2013 |
20130284083 | MANUFACTURING APPARATUS OF SiC SINGLE CRYSTAL AND METHOD FOR MANUFACTURING SiC SINGLE CRYSTAL - A manufacturing apparatus for SiC single crystal has a control unit to control induction heating such that frequency f (Hz) of alternating current to be passed to the induction heating unit satisfies Formula (1); D1 (mm) is permeation depth of electromagnetic waves into a side wall of a crucible by the heating unit, D2 (mm) is permeation depth of electromagnetic waves into a SiC solution, T (mm) is thickness of the crucible side wall of the crucible, and R (mm) is crucible inner radius: | 10-31-2013 |
20130305981 | MANUFACTURING APPARATUS OF SiC SINGLE CRYSTAL, JIG FOR USE IN THE MANUFACTURING APPARATUS, AND METHOD FOR MANUFACTURING SiC SINGLE CRYSTAL - A manufacturing apparatus of a SiC single crystal which can suppress the generation of a polycrystal is provided. A jig ( | 11-21-2013 |
20140007807 | METHOD FOR PRODUCING SIC SINGLE CRYSTALS AND PRODUCTION DEVICE - Provided is a method for producing SiC single crystals while maintaining a temperature gradient such that the temperature decreases from within an Si solution inside a graphite crucible toward the solution surface, with the SiC seed crystals that have contacted the solution surface serving as the starting point for crystal seed growth, wherein when the crystal growth surface of the SiC seed crystals, which serves as the starting point for SiC single crystal growth, contacts the solution surface, the height by which the solution rises to the side of the SiC seed crystals is within the range where the SiC single crystals that have grown from the crystal growth surface and the SiC single crystals that have grown from the side grow as one SiC single crystal unit. Also provided is a device for producing an SiC single crystal comprising a graphite crucible, a heating device for heating and melting base materials in the crucible to form a base material solution and maintaining a temperature gradient required for growth of SiC single crystal, a support rod which holds a SiC seed crystal at its bottom end, and a holding structure which maintains the holding by the support rod so that a height by which the solution rises to the side of the SiC seed crystal is within a range where the SiC single crystal that have grown from the crystal growth surface and the SiC single crystal that have grown from the side grow as one SiC single crystal unit. | 01-09-2014 |
20140116325 | PRODUCTION APPARATUS OF SiC SINGLE CRYSTAL BY SOLUTION GROWTH METHOD, METHOD FOR PRODUCING SiC SINGLE CRYSTAL USING THE PRODUCTION APPARATUS, AND CRUCIBLE USED IN THE PRODUCTION APPARATUS - A region of an SiC solution in the vicinity of an SiC seed crystal is cooled while suppressing the temperature variation in a peripheral region of the SiC solution. An apparatus includes a seed shaft and a crucible for an SiC solution. The seed shaft has a lower end surface for attachment to an SiC seed crystal. The crucible comprises a main body, an intermediate cover, and a top cover. The main body includes a first cylindrical portion and a bottom portion at a lower end portion of the first cylindrical portion. The intermediate cover is within the first cylindrical portion and above the liquid level of the SiC solution in the main body. The intermediate cover has a first through hole for the seed shaft. The top cover is disposed above the intermediate cover and has a second through hole for the seed shaft to pass through. | 05-01-2014 |
20140245945 | SIC SINGLE CRYSTAL MANUFACTURING METHOD - Provided is a SiC single crystal manufacturing method whereby growing speed improvement required to have high productivity can be achieved, while maintaining flat growth in which uniform single crystal growth can be continued at the time of growing a SiC single crystal using a solution method. In this SiC single crystal manufacturing method, a SiC single crystal is grown in a crucible from a Si solution containing C. The SiC single crystal manufacturing method is characterized in alternately repeating: a high supersaturation degree growing period, in which the growth is promoted by maintaining the supersaturation degree of C in the Si solution higher than an upper limit critical value at which flat growth can be maintained, said supersaturation degree being at a growing interface between the Si solution and a SiC single crystal being grown; and a low supersaturation degree growing period, in which the growth is promoted by maintaining the supersaturation degree lower than the critical value. | 09-04-2014 |
20150152569 | APPARATUS FOR PRODUCING SiC SINGLE CRYSTAL AND METHOD FOR PRODUCING SiC SINGLE CRYSTAL - An apparatus ( | 06-04-2015 |
20150191848 | APPARATUS FOR PRODUCING SIC SINGLE CRYSTAL BY SOLUTION GROWTH METHOD, AND METHOD FOR PRODUCING SIC SINGLE CRYSTAL BY USING THE PRODUCTION APPARATUS AND CRUCIBLE USED IN THE PRODUCTION APPARATUS - A production apparatus is used for a solution growth method. The production apparatus includes a seed shaft and a crucible. The seed shaft has a lower end surface to which an SiC seed crystal is attached. The crucible contains an SiC solution. The crucible includes a cylindrical portion, a bottom portion, and an inner lid. The bottom portion is disposed at a lower end of the cylindrical portion. The inner lid is disposed in the cylindrical portion. The inner lid has a through hole and is positioned below a liquid surface of the SiC solution when the SiC solution is contained in the crucible. | 07-09-2015 |
20150225871 | SiC SINGLE CRYSTAL PRODUCTION APPARATUS AND METHOD OF PRODUCING SiC SINGLE CRYSTALS - A SiC single crystal production apparatus is used in production of SiC single crystals by solution growth techniques. The apparatus includes: a seed shaft having a lower end surface to which a SiC seed crystal is to be attached; a crucible that contains a Si—C solution; a stirring member that is immersed in the Si—C solution; and drive sources that cause relative rotation between the crucible and the stirring member. The lower end of the stirring member is located lower than the lower end of the SiC seed crystal attached to the lower end surface of the seed shaft. | 08-13-2015 |
20150225872 | SINGLE CRYSTAL PRODUCTION APPARATUS, CRUCIBLE FOR USE THEREIN, AND METHOD OF PRODUCING SINGLE CRYSTAL - The production apparatus is used in production of single crystals by solution growth techniques. The production apparatus includes a seed shaft, a crucible, and a drive source. The seed shaft has a lower end surface to which a seed crystal is to be attached. The crucible contains a solution from which a single crystal is made. The drive source causes the crucible to rotate, and also varies the rotational speed of the crucible. The inner peripheral surface of the crucible includes a flow control surface which defines a non-circular cross-sectional shape. This single crystal production apparatus is capable of strongly stirring the solution contained in the crucible. | 08-13-2015 |
20150299900 | METHOD FOR PRODUCING SIC SINGLE CRYSTAL - The purpose of the present invention is to produce a high-quality SiC single crystal with good reproducibility while avoiding the fluctuations in the solution-contacting position of a seed crystal among production operations. A method for producing a SiC single crystal by bringing a SiC seed crystal supported by a supporting bar into contact with a solution that has been heated by high-frequency induction to thereby grow the SiC single crystal, wherein the supporting bar is born down while applying a magnetic field to the solution to thereby bring the SiC seed crystal into contact with the solution, and subsequently the application of the magnetic field is halted to grow the SiC single crystal. | 10-22-2015 |
20160090664 | METHOD FOR PRODUCING SIC SINGLE CRYSTAL - A method for producing a SiC single crystal by a solution process, comprising contacting a seed crystal substrate held on a seed crystal holding shaft with a Si—C solution to conduct crystal growth of a SiC single crystal, the Si—C solution being housed in a crucible and having a temperature gradient in which the temperature decreases from the interior toward the surface,
| 03-31-2016 |
Patent application number | Description | Published |
20100248561 | HYBRID OUTBOARD MOTOR - There is provided a hybrid outboard motor capable of transmitting motive power of a power source appropriately and efficiently in a limited space while achieving compactness, high performance, and the like. The hybrid outboard motor includes: a casing; a power unit housed in the casing; a screw disposed outside the casing, the screw being driven by the power unit; a power transmission system transmitting motive power of the power unit to the screw; an internal combustion engine and an electric motor serving also as a generator, the internal combustion engine and the electric motor being arranged in parallel in a beam direction in the casing; and a first clutch disposed between the internal combustion engine and the electric motor, wherein one or both of the internal combustion engine and the electric motor are connected to a propulsion unit including the screw so as to rotate it. | 09-30-2010 |
20100248562 | HYBRID OUTBOARD MOTOR - A power unit is housed in a casing, and a screw (propeller) is disposed outside the casing, the screw being driven by the power unit. The casing is formed as a watertight case in a substantially rectangular parallelepiped shape with a left-right width direction being a longitudinal direction, and the case has at least a front face portion coupled to a stern portion and a substantially flat upper face portion at a substantially same height as a top portion of the stern portion. | 09-30-2010 |
20110244738 | ELECTRIC OUTBOARD MOTOR - In an electric outboard motor to be driven by an electric motor, the electric motor is formed in a watertight manner and is disposed to be exposed to the outside. Further, the electric motor is an air cooled type, and a shape of the electric motor is in a substantially flat shape in which a dimension in a horizontal direction perpendicular to an output shaft of the electric motor is made larger than a dimension in a height direction. The electric motor, when a hull is seen in plan view, is disposed in a manner that a front portion of the electric motor overlaps a transom board of the hull at the rear. | 10-06-2011 |
20110244739 | ELECTRIC OUTBOARD MOTOR - An electric outboard motor to be driven by an electric motor separately includes an electric outboard motor main body including the electric motor and a propulsion section that applies the electric motor as motive power and a power supply section supplying power to the electric motor, in which the electric outboard motor main body and the power supply section are detachably connected by couplers via a cable. Further, the coupler of the cable is allowed to be attached and detached to and from the coupler on a side of the power supply section. | 10-06-2011 |
20110244740 | ELECTRIC OUTBOARD MOTOR - An electric outboard motor main body including an electric motor and a propulsion section that applies the electric motor as motive power, and a power supply section supplying power to the electric motor and a control section controlling the electric motor that are disposed inside a hull separately from the electric outboard motor main body are provided, and the electric motor and the propulsion section are attached to enable a tilt-up operation via a tilt pin provided in a horizontal direction, and the electric motor is disposed higher than the tilt pin in a state before the tilt-up operation. | 10-06-2011 |
20120115376 | ENGINE CASE OF OUTBOARD MOTOR - An engine case houses engines in the inside of the case and is provided with a propulsion unit outside the case. A case main body housing the engines and assemblies of peripheral parts of the engines, and a case cover covering an opening at an upper portion of the case main body are included. Mufflers are installed on an exterior of a lower surface of the case, and on the lower surface of the case, housing portions housing the mufflers and exhaust hoses are formed. | 05-10-2012 |
20120286129 | STEERING DEVICE OF OUTBOARD MOTOR - An engine is housed in an engine case and a propulsion unit driven by the engine is provided outside the engine case. By a swivel bracket installed in a predetermined part of the engine case, the propulsion unit is pivotally supported around a steering shaft, and centers of a drive shaft driving the propulsion unit and of the steering shaft are matched. | 11-15-2012 |
20120304625 | EXHAUST DEVICE OF OUTBOARD MOTOR - A water jacket is attached to an exhaust manifold connected to an exhaust port to annularly cover an outer side of an exhaust channel in the exhaust manifold. An engine cooling coolant is made to flow as a cooling medium of the water jacket of the exhaust manifold. An exhaust pipe in a siphon shape is connected to the exhaust manifold, a water jacket is attached so as to annularly cover an outer side of a front half portion of the siphon shape, and seawater is directly supplied into the water jacket to flow therein. Consequently, an exhaust device of an outboard motor practically having a compact structure and excellent exhaust performance and accordingly realizing excellent engine performance is provided. | 12-06-2012 |
Patent application number | Description | Published |
20120285247 | TESTING METHOD USING GUIDED WAVE - A testing method using a guided wave generates a guided wave to propagate through a subject as a testing target in a longitudinal direction of the subject, detects a reflected wave of the guided wave and examines the subject on the basis of the reflected wave. The testing method includes the steps of (A) obtaining data for defect amount estimation beforehand indicating a relationship between a defect amount of the subject and a magnitude of a reflected wave, (B) generating a guided wave so as to propagate through the subject, and detecting a reflected wave of the guided wave, and (C) estimating a defect amount of the subject on the basis of the data for defect amount estimation obtained at (A) and the magnitude of the guided wave detected at (B). | 11-15-2012 |
20120291552 | TESTING METHOD USING GUIDED WAVE - (A) first data for defect amount estimation for the guided wave of a first frequency is obtained, the data indicating a relationship among amplitude of the reflected wave, a defect cross-sectional area and a defect width. (B) second data for defect amount estimation for the guided wave of a second frequency is obtained, the data indicating a relationship among amplitude of the reflected wave, a defect cross-sectional area and a defect width. (C) a guided wave of the first frequency is generated, and amplitude of a reflected wave is detected as first amplitude. (D) a guided wave of the second frequency is generated, and amplitude of a reflected wave is detected as second amplitude. (E) on a basis of the first and second data and the first and second amplitude, a defect cross-sectional area and a defect width of the defect part are estimated. | 11-22-2012 |
20130036822 | L-MODE GUIDED WAVE SENSOR - An L-mode guided wave sensor | 02-14-2013 |