Electric power tool

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 8627900
APP PUB NO 20110180286A1
SERIAL NO

12994731

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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An electric power tool (1) includes a brushless direct-current motor (3) and a drive circuit that supplies drive power to the motor, the power tool rotates or drives a tool, whereby the drive circuit includes plural switching elements (21), and is arranged on a board (9) provided in a grip portion of a housing or below the grip portion; and an electric fan (22) is provided in the vicinity of the switching element for cooling the switching element.

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First Claim

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Patent Owner(s)

  • HITACHI KOKI CO., LTD.

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Oomori, Katsuhiro Ibaraki, JP 57 4191
Toukairin, Junichi Ibaraki, JP 23 457
Uchida, Hiroki Ibaraki, JP 114 3121

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