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Kenichi Yoshida, Tokyo JP

Kenichi Yoshida, Tokyo JP

Patent application numberDescriptionPublished
20080235957ELECTRIC BUSH CUTTER - An electric bush cutter includes an electric motor, which rotates a cutting edge through a centrifugal clutch, and an operating unit capable of adjusting rotational speed of the electric motor in accordance with an operation amount of the operating unit. A starting region including a rotational speed range from a stopped state of the electric motor to fastening of the centrifugal clutch, a common-use region corresponding to a rotational speed range suitable for bush-cutting by the electric bush cutter, and a transition region corresponding to a rotational speed range of the electric motor from the starting region to the common-use region are set. A rate of change in the rotational speed of the electric motor with respect to the operation of the operating unit in the transition region is greater than those in the starting region and common-use region.10-02-2008
20080235958Lawn Mower - A lawn mower comprises an operation arm, a driven shaft rotatably supported inside the operation arm and having two opposite ends, a cutter operatively connected to one end of the driven shaft, a power source operatively connected to the other end of the driven shaft for generating a drive power to be transmitted to the cutter through the driven shaft, wherein said power source is selective from an engine and an electric motor, an arm side joint case provided on the end of the operation arm, a power source side joint case provided on a housing of the power source and detachably and selectively connected to the arm side joint case, and a centrifugal clutch incorporated in the arm side joint case and having a first member connected to the driven shaft, a second member detachably and selectively connected to the power source and a third member provided to engage the first member and the second member according to the centrifugal force applied thereto.10-02-2008
20090230693General purpose engine - The present invention achieves reductions in the weight and size of a general purpose engine provided for a power generation application. An optional external apparatus can be attached to one shaft part of a rotary shaft, and an axial gap type motor/generator constituted by a power generating rotor (inner rotor) and a stator is attached integrally to another shaft part of the rotary shaft.09-17-2009
20090230694General purpose engine - The present invention achieves an improvement in the power generation capacity of a general purpose engine provided for a power generation application while realizing reductions in the weight and size thereof. An optional external apparatus can be attached to one shaft part of a rotary shaft, and an axial gap type motor/generator constituted by power generating rotors (inner and outer rotors) and a stator is attached integrally to another shaft part of the rotary shaft.09-17-2009
20090230695General purpose engine - A general purpose engine is provided with an engine main body, a rotary shaft, and an axial gap type motor/generator. The rotary shaft is rotated by a driving force of the engine main body. The rotary shaft includes a first shaft part disposed on one side portion of the engine main body and a second shaft part disposed on another side portion of the engine main body. The axial gap type motor/generator is attached integrally to the second shaft part. The axial gap type motor/generator is provided with a power generating rotor that rotates integrally with said rotary shaft, and a stator that is attached to the engine main body. The stator is disposed on a side closer to the engine main body than the power generating rotor and at a remove from the power generating rotor.09-17-2009
20100330361METAL MAGNET AND MOTOR USING THE SAME - A metal magnet 12-30-2010
20110227424RARE-EARTH SINTERED MAGNET, ROTATOR, AND RECIPROCATING MOTOR - The present invention relates to a rare-earth sintered magnet 09-22-2011
20120018191COATING AND ELECTRONIC COMPONENT - The present invention provides a coating 01-26-2012

Patent applications by Kenichi Yoshida, Tokyo JP