Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Junichi Toukairin0
Katsuhiro Oomori0
Hiroki Uchida0
Date of Patent
January 14, 2014
0Patent Application Number
129947310
Date Filed
May 20, 2009
0Patent Citations Received
Patent Primary Examiner
Patent abstract
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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