Kumio
Kumio Gundo, Kanagawa-Ken JP
Patent application number | Description | Published |
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20090261867 | SEMICONDUCTOR DEVICE HAVING VOLTAGE OUTPUT CIRCUIT - Input and output nodes, an output circuit and a drive circuit are provided. The output circuit includes first and second n-channel MOS transistors connected to each other in series. A drain of the first n-channel MOS transistor is connected to a first line. A source of the first n-channel MOS transistor, a drain of the second n-channel MOS transistor, and a drain of a first p-channel MOS transistor are commonly connected to the output node. A source of the second n-channel MOS transistor is connected to a second line. A source of the first p-channel MOS transistor is connected to the first line. The drive circuit generates first to third control signals in response to an input signal provided to the input node. The control signals are respectively outputted to gates of the first and second n-channel MOS transistors and to a gate of the first p-channel MOS transistor. | 10-22-2009 |
Kumio Masuda, Yonago-Shi JP
Patent application number | Description | Published |
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20120185883 | DISK CLAMPING MECHANISM AND DISK ROTATING MOTOR PROVIDED WITH SAME - There is provided a disk clamping mechanism that supports a disk on a turntable unit under pressure by an attractive force produced between a clamping magnet and a damper constituted in a rotor unit, wherein the clamping magnet is directly fixed at the upper surface of a rotor frame including the turntable unit, and further, the upper surface of the clamping magnet is covered with a centering member for centering the disk. | 07-19-2012 |
20140042849 | BRUSHLESS MOTOR - Reduction in size of a shape of a brushless motor of the outer rotor type having an outer case seen from the axial direction is realized. | 02-13-2014 |
Kumio Masuda, Meguro-Ku JP
Patent application number | Description | Published |
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20130049505 | DISK-ROTATING MOTOR AND DISK-DRIVING DEVICE - A disk-rotating motor includes a rotor section including a rotor magnet attached to a rotor frame and a shaft fixed to a center of the rotor frame, and a stator section including a shaft-bearing which bears the shaft, wherein the stator section includes the shaft-bearing, a shaft-bearing housing which holds the shaft-bearing, a thrust plate which bears the shaft in an axis direction, a stator core which is arranged to face the rotor magnet and provided with wire-winding, a core holder which holds the stator core, and a bracket which holds the shaft-bearing housing. The bracket has a projecting part which fixes the shaft-bearing at a central part thereof, an inner diameter part of the shaft-bearing is press-fitted to be tightened to the projecting part, and an outer diameter part of the shaft-bearing housing is adhered to be tightened to an inner diameter part of the core holder. | 02-28-2013 |
Kumio Takahashi, Hitachinaka-Shi JP
Patent application number | Description | Published |
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20080229719 | Dust Collection Device - A dust collection device has a tank, a suction unit, a filtering unit, a dust removal unit, a first detection unit, and a control unit. The tank has an air inlet for accommodating dust. The suction unit aspirates the dust through the air inlet. The filtering unit captures the dust through the air inlet. The dust removal unit removes the dust from the filtering unit. The first detection unit detects an operational state of the suction unit. The control unit controls the suction unit and the dust removal unit. The control unit activates the dust removal unit, when the first detection unit detects that the suction unit operates for a first predetermined time period and then stop operating. | 09-25-2008 |