Electric power tool

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9590475
APP PUB NO 20140139055A1
SERIAL NO

14106609

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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According to an aspect of the invention, an electric power tool which includes a brushless direct-current motor and a drive circuit that supplies drive power to the motor, and which rotates or drives a tool, characterized in that the drive circuit includes plural switching elements, and is arranged on a board provided in a grip portion of a housing or below the grip portion; and an electric fan 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)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Oomori, Katsuhiro Hitachinaka, JP 57 4192
Tokairin, Junichi Hitachinaka, JP 7 124
Uchida, Hiroki Hitachinaka, JP 114 3122

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