Electric tool

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 10171011
APP PUB NO 20160079887A1
SERIAL NO

14786212

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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An electric tool includes: a motor configured to be driven by PWM controlling a semiconductor switching element; a trigger configured to adjust startup and rotation of the motor; a changeover switch configured to switch a rotation direction of the motor between a forward rotation and a reverse rotation; a power transmission mechanism configured to rotate a tip tool by the motor, and a controller configured to control rotation of the motor. When the reverse rotation is set by the changeover switch, the controller PWM controls the semiconductor switching element at a high duty ratio after the trigger is pulled to drive the motor, and thereafter drives the motor at a state where the high duty ratio is changed to a low duty ratio.

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First Claim

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Patent Owner(s)

  • KOKI HOLDINGS CO., LTD.

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Iwata, Kazutaka Ibaraki, JP 52 4854
Takano, Nobuhiro Ibaraki, JP 120 6849

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